Electrical
Diagnosis and Testing - Climate Control System
In this manual: Electrical
~226min read
1special tools
Diagnostic Trouble Code (DTC) Chart
The diagnosis in this manual assumes a certain level of skill and knowledge of Ford-approved diagnostic procedures.
REFER TO: Diagnostic Methods (100-00 General Information, Description and Operation).
Diagnostic Trouble Code Chart
| Module | Trouble Code | Description | Action |
|---|---|---|---|
| ACCM | B11EE:19 | Air Conditioning Compressor: Current in Circuit Above Threshold | GO TO Pinpoint Test AI |
| ACCM | B11EE:41 | Air Conditioning Compressor: General Checksum Error | GO TO Pinpoint Test AR |
| ACCM | B11EE:4B | Air Conditioning Compressor: Overheating | GO TO Pinpoint Test AI |
| ACCM | B11EE:92 | Air Conditioning Compressor: Performance or Incorrect Operation | GO TO Pinpoint Test AI |
| ACCM | P0562:00 | System Low Voltage: No Sub-type Information | GO TO Pinpoint Test AI |
| ACCM | P0563:00 | System High Voltage: No Sub-type Information | GO TO Pinpoint Test AI |
| ACCM | P0AFA:16 | Hybrid/Electric Vehicle Battery System Low Voltage: Circuit Voltage Below Threshold | GO TO Pinpoint Test AI |
| ACCM | P0AFB:17 | Hybrid/Electric Vehicle Battery System High Voltage: Circuit Voltage Above Threshold | GO TO Pinpoint Test AI |
| ACCM | P0AFB:1C | Hybrid/Electric Vehicle Battery System High Voltage: Circuit Voltage Out of Range | GO TO Pinpoint Test AI |
| ACCM | U0001:88 | High Speed CAN Communication Bus: Bus Off | GO to Pinpoint Test AO |
| ACCM | U0100:00 | Lost Communication With ECM/PCM "A": No Sub Type Information | GO to Pinpoint Test AK |
| ACCM | U0111:00 | Lost Communication With Battery Energy Control Module "A": No Sub Type Information | GO to Pinpoint Test AL |
| ACCM | U0140:00 | Lost Communication With Body Control Module: No Sub Type Information | GO to Pinpoint Test Q |
| ACCM | U3000:04 | Control Module: Internal System Failure | GO TO Pinpoint Test AR |
| ACCM | U3000:42 | Control Module: General Memory Failure | GO TO Pinpoint Test AR |
| ACCM | U3000:49 | Control Module: Internal Electronic Failure | GO TO Pinpoint Test AR |
| BCMC | B3A01:00 | Air Conditioning (A/C) Refrigerant Distribution Valve Actuator "C" Control Circuit Open: No Sub Type Information | GO to Pinpoint Test AU |
| BCMC | B3A02:00 | Air Conditioning (A/C) Refrigerant Distribution Valve Actuator "C" Control Circuit Low: No Sub Type Information | GO to Pinpoint Test AU |
| BCMC | B3A03:00 | Air Conditioning (A/C) Refrigerant Distribution Valve Actuator "C" Control Circuit High: No Sub Type Information | GO to Pinpoint Test AU |
| BCMC | P2611:00 | Air Conditioning Refrigerant Distribution Valve Control Circuit/Open "A": No Sub Type Information | GO TO Pinpoint Test AS |
| BCMC | P2612:00 | Air Conditioning Refrigerant Distribution Valve Control Circuit "A" Low: No Sub Type Information | GO TO Pinpoint Test AS |
| BCMC | P2613:00 | Air Conditioning Refrigerant Distribution Valve Control Circuit High Signal "A": No Sub Type Information | GO TO Pinpoint Test AS |
| BCMC | P2CFC:00 | Air Conditioning (A/C) Clutch Control Circuit: No Sub Type Information | GO to Pinpoint Test B |
| BCMC | P2CFD:00 | Air Conditioning (A/C) Clutch Control Circuit Low: No Sub Type Information | GO to Pinpoint Test B |
| BCMC | P2CFE:00 | Air Conditioning (A/C) Clutch Control Circuit: No Sub Type Information | GO to Pinpoint Test B |
| BCMC | P2E62:00 | Engine Coolant Bypass Valve "E" Control Circuit/Open: No Sub Type Information | GO to Pinpoint Test AT |
| BCMC | P2E63:00 | Engine Coolant Bypass Valve "E" Control Circuit Low: No Sub Type Information | GO to Pinpoint Test AT |
| BCMC | P2E64:00 | Engine Coolant Bypass Valve "E" Control Circuit High: No Sub Type Information | GO to Pinpoint Test AT |
| HVAC | B102E:11 | Air Quality Sensor: Short to Ground | GO TO Pinpoint Test X |
| HVAC | B102E: 15 | Air Quality Sensor: Short to Battery or Open | GO TO Pinpoint Test X |
| HVAC | B102E: 92 | Air Quality Sensor: Performance or Incorrect Operation | GO TO Pinpoint Test X |
| HVAC | B1081:07 | Left Temperature Door Motor: Mechanical Failure | GO to Pinpoint Test G |
| HVAC | B1081:11 | Left Temperature Door Motor: Short to Ground | GO to Pinpoint Test G |
| HVAC | B1081:12 | Left Temperature Door Motor: Short to Battery | GO to Pinpoint Test G |
| HVAC | B1081:13 | Left Temperature Door Motor: Open Circuit | GO to Pinpoint Test G |
| HVAC | B1082:07 | Right Temperature Door Motor: Mechanical Failure | GO to Pinpoint Test H |
| HVAC | B1082:11 | Right Temperature Door Motor: Short to Ground | GO to Pinpoint Test H |
| HVAC | B1082:12 | Right Temperature Door Motor: Short to Battery | GO to Pinpoint Test H |
| HVAC | B1082:13 | Right Temperature Door Motor: Open Circuit | GO to Pinpoint Test H |
| HVAC | B1083:07 | Recirculation Door Motor: Mechanical Failure | GO to Pinpoint Test J |
| HVAC | B1083:11 | Recirculation Door Motor: Short to Ground | GO to Pinpoint Test J |
| HVAC | B1083:12 | Recirculation Door Motor: Short to Battery | GO to Pinpoint Test J |
| HVAC | B1083:13 | Recirculation Door Motor: Open Circuit | GO to Pinpoint Test J |
| HVAC | B1086:07 | Mode Door Motor: Mechanical Failure | GO to Pinpoint Test K |
| HVAC | B1086:11 | Air Distribution Door Motor: Short to Ground | GO to Pinpoint Test K |
| HVAC | B1086:12 | Air Distribution Door Motor: Short to Battery | GO to Pinpoint Test K |
| HVAC | B1086:13 | Air Distribution Door Motor: Open Circuit | GO to Pinpoint Test K |
| HVAC | B10AF:11 | Blower Fan Relay: Short to Ground | GO TO Pinpoint Test O |
| HVAC | B10AF:12 | Blower Fan Relay: Short to Battery | GO to Pinpoint Test P |
| HVAC | B10AF:13 | Blower Fan Relay: Open Circuit | GO TO Pinpoint Test O |
| HVAC | B10AF:15 | Blower Fan Relay: Short to Battery or Open Circuit | GO TO Pinpoint Test O |
| HVAC | B10AF:15 | Blower Fan Relay: Short to Battery or Open Circuit | GO to Pinpoint Test P |
| HVAC | B10B3:11 | Right Panel Outlet Air Temperature: Short to Ground | GO to Pinpoint Test Z |
| HVAC | B10B3:15 | Right Panel Outlet Air Temperature: Short to Battery or Open Circuit | GO to Pinpoint Test Z |
| HVAC | B10B4:11 | Right Floor Outlet Air Temperature: Short to Ground | GO to Pinpoint Test Z |
| HVAC | B10B4:15 | Right Floor Outlet Air Temperature: Short to Battery or Open Circuit | GO to Pinpoint Test Z |
| HVAC | B10B5:11 | Left Panel Outlet Air Temperature: Short to Ground | GO to Pinpoint Test Z |
| HVAC | B10B5:15 | Left Panel Outlet Air Temperature: Short to Battery or Open Circuit | GO to Pinpoint Test Z |
| HVAC | B10B6:11 | Left Floor Outlet Air Temperature: Short to Ground | GO to Pinpoint Test Z |
| HVAC | B10B6:15 | Left Floor Outlet Air Temperature: Short to Battery or Open Circuit | GO to Pinpoint Test Z |
| HVAC | B10B7:11 | Rear Outlet Air Temperature: Circuit Short to Ground | GO TO Pinpoint Test AF |
| HVAC | B10B7:15 | Rear Outlet Air Temperature: Short to Battery or Open | GO TO Pinpoint Test AF |
| HVAC | B10B8:63 | Buttons: Circuit/Component Protection Time-Out | GO to Pinpoint Test AH |
| HVAC | B10B9:12 | Blower Fan Control: Short to Battery | GO TO Pinpoint Test O |
| HVAC | B10B9:14 | Blower Fan Control: Short to Ground or Open Circuit | GO TO Pinpoint Test O |
| HVAC | B10B9:14 | Blower Fan Control: Short to Ground or Open Circuit | GO to Pinpoint Test P |
| HVAC | B10BA:12 | Rear Blower Motor Control: Short to Battery | GO to Pinpoint Test AC |
| HVAC | B10BA:14 | Rear Blower Motor Control: Short to Ground or Open | GO to Pinpoint Test AC |
| HVAC | B10BA:14 | Rear Blower Motor Control: Short to Ground or Open | GO to Pinpoint Test advertisement |
| HVAC | B11E3:07 | HVAC Rear Blend Door Motor: Mechanical Malfunction | GO TO Pinpoint Test AF |
| HVAC | B11E3:11 | HVAC Rear Blend Door Motor: Short to Ground | GO TO Pinpoint Test AF |
| HVAC | B11E3:12 | HVAC Rear Blend Door Motor: Short to Battery | GO TO Pinpoint Test AF |
| HVAC | B11E3:13 | HVAC Rear Blend Door Motor: Circuit Open | GO TO Pinpoint Test AF |
| HVAC | B11E4:07 | Rear Air Distribution Door Motor: Mechanical Malfunction | GO TO Pinpoint Test AE |
| HVAC | B11E4:11 | Rear Air Distribution Door Motor: Short to Ground | GO TO Pinpoint Test AE |
| HVAC | B11E4:12 | Rear Air Distribution Door Motor: Short to Battery | GO TO Pinpoint Test AE |
| HVAC | B11E4:13 | Rear Air Distribution Door Motor: Circuit Open | GO TO Pinpoint Test AE |
| HVAC | B11E5:11 | HVAC Left Door Position Sensor: Short to Ground | GO to Pinpoint Test G |
| HVAC | B11E5:15 | HVAC Left Door Position Sensor: Short to Battery or Open Circuit | GO to Pinpoint Test G |
| HVAC | B11E6:11 | HVAC Right Door Position Sensor: Short to Ground | GO to Pinpoint Test H |
| HVAC | B11E6:15 | HVAC Right Door Position Sensor: Short to Battery or Open Circuit | GO to Pinpoint Test H |
| HVAC | B11E7:11 | Air Distribution Door Position Sensor: Short to Ground | GO to Pinpoint Test K |
| HVAC | B11E7:15 | Air Distribution Door Position Sensor: Short to Battery or Open Circuit | GO to Pinpoint Test K |
| HVAC | B11F0:11 | Air Inlet Door Position Sensor: Short to Ground | GO to Pinpoint Test J |
| HVAC | B11F0:15 | Air Inlet Door Position Sensor: Short to Battery or Open Circuit | GO to Pinpoint Test J |
| HVAC | B12KA:11 | Start/Stop Eco-Start Status Indicator: Short to Ground | GO to Pinpoint Test AG |
| HVAC | B12KA:15 | Start/Stop Eco-Start Status Indicator: Short to Battery or Open Circuit | GO to Pinpoint Test AG |
| HVAC | B1A61:11 | In-Vehicle Temperature Sensor: Short to Ground | GO to Pinpoint Test E |
| HVAC | B1A61:15 | In-Vehicle Temperature Sensor: Short to Battery or Open Circuit | GO to Pinpoint Test E |
| HVAC | B1A63:11 | Right Solar Sensor: No Sub Type Information | GO to Pinpoint Test Y |
| HVAC | B1A63:15 | Right Solar Sensor: Short to Battery or Open Circuit | GO to Pinpoint Test Y |
| HVAC | B1A64:11 | Left Solar Sensor: No Sub Type Information | GO to Pinpoint Test Y |
| HVAC | B1A64:15 | Left Solar Sensor: Short to Battery or Open Circuit | GO to Pinpoint Test Y |
| HVAC | B1A69:11 | Humidity Sensor: Short to Ground | GO to Pinpoint Test E |
| HVAC | B1A69:15 | Humidity Sensor: Short to Battery or Open Circuit | GO to Pinpoint Test E |
| HVAC | B1A69:92 | Humidity Sensor: Performance or Incorrect Operation | GO to Pinpoint Test E |
| HVAC | B1B71:11 | Evaporator Temperature Sensor: Short to Ground | GO to Pinpoint Test F |
| HVAC | B1B71:15 | Evaporator Temperature Sensor: Short to Battery or Open Circuit | GO to Pinpoint Test F |
| HVAC | B1B7D:11 | Rear Air Distribution Actuator: Short to Ground | GO TO Pinpoint Test AE |
| HVAC | B1B7D:15 | Rear Air Distribution Actuator: Short to Battery or Open | GO TO Pinpoint Test AE |
| HVAC | C1B14:11 | Sensor Supply Voltage A: Circuit Short to Ground | GO to Pinpoint Test AB |
| HVAC | C1B14:12 | Sensor A Supply Voltage: Short to Battery | GO to Pinpoint Test AB |
| HVAC | U0100:00 | Lost Communication With ECM/PCM "A": No Sub Type Information | GO to Pinpoint Test AK |
| HVAC | U0140:00 | Lost Communication With Body Control Module: No Sub Type Information | GO to Pinpoint Test Q |
| HVAC | U0151:00 | Lost Communication with Restraints Control Module: No Sub Type Information | GO TO Pinpoint Test R |
| HVAC | U0155:00 | Lost Communication with Instrument Panel Cluster (IPC) Control Module: No Sub Type Information | GO to Pinpoint Test S |
| HVAC | U0165:00 | Communication Lost with Rear HVAC Control Module: No Sub Type Information | GO to Pinpoint Test U |
| HVAC | U0253:00 | Lost Communication with Auxiliary Protocol Interface Module: No Sub Type Information | GO to Pinpoint Test V |
| HVAC | U0401:00 | Incorrect Data Received from ECM/PCM 'A': No Sub Type Information | GO to Pinpoint Test Access Point |
| HVAC | U0401:82 | Invalid Data Received from ECM/PCM A: Active/Incorrect Sequence Counter/Not Updated | GO to Pinpoint Test Access Point |
| HVAC | U0422:68 | Invalid Data Received from Body Control Module: Event Information | GO to Pinpoint Test Access Point |
| HVAC | U0422:81 | Invalid Data Received from Body Control Module: Incorrect Serial Data Received | GO to Pinpoint Test Access Point |
| HVAC | U0452:82 | Invalid Data Received from Restraints Control Module: Active / Sequence Counter Incorrect / Not Updated | GO to Pinpoint Test Access Point |
| HVAC | U0466:68 | Incorrect Data Received from Rear HVAC Control Module: Event Information | GO to Pinpoint Test Access Point |
| HVAC | U1000:00 | Solid State Driver Protection Active - Driver Disabled: No Sub Type Information | GO to Pinpoint Test W |
| HVAC | U2024:51 | Control Module Calibration Data: Not Programmed | GO TO Pinpoint Test AQ |
| HVAC | U2100:00 | Initial Configuration Not Complete: No Sub Type Information | GO TO Pinpoint Test AQ |
| HVAC | U3000:41 | Control Module: General Checksum Failure | GO TO Pinpoint Test AR |
| HVAC | U3000:49 | Control Module: Internal Electronic Failure | GO TO Pinpoint Test AR |
| HVAC | U3003:16 | Battery Voltage: Circuit Voltage Below Threshold | GO to Pinpoint Test AM |
| HVAC | U3003:17 | Battery Voltage: Circuit Voltage Above Threshold | GO to Pinpoint Test AN |
| PCM | P0532:00 | A/C Refrigerant Pressure Sensor A Circuit Low Signal: No Sub Type Information | GO to Pinpoint Test A |
| PCM | P0533:00 | A/C Refrigerant Pressure Sensor A High Signal: No Sub Type Information | GO to Pinpoint Test A |
| PCM | P0645:00 | A/C Clutch Relay Control Circuit: No Sub Type Information | GO to Pinpoint Test B |
| PCM | P06A0:00 | A/C Compressor Variable Control Circuit: No Sub Type Information | GO to Pinpoint Test C |
| PCM | P1464:00 | A/C Consumption Out of Self-Test Range: No Sub Type Information | GO to Pinpoint Test N |
| PCM | P193E:00 | A/C Clutch Request Signal: No Sub Type Information | GO TO Pinpoint Test AA |
| PCM | P2183:00 | Engine Coolant Temperature Sensor 2: Range/Performance Circuit | GO TO Pinpoint Test AV |
| PCM | P2184:00 | Engine Coolant Temperature Sensor 2: Low Signal Circuit | GO TO Pinpoint Test AV |
| PCM | P2185:00 | Engine Coolant Temperature Sensor 2: High Signal | GO TO Pinpoint Test AV |
| PCM | P2186:00 | Engine Coolant Temperature Sensor 2: Intermittent/Erratic Circuit | GO TO Pinpoint Test AV |
| PCM | P2600:00 | Engine Coolant Pump "A" Control Circuit/Open: No Sub Type Information | GO to Pinpoint Test D |
| PCM | P2601:00 | Engine Coolant Pump "A" Control Circuit Performance/Stuck Off: No Sub Type Information | GO to Pinpoint Test D |
| PCM | P2602:00 | Engine Coolant Pump "A" Control Circuit Low: No Sub Type Information | GO to Pinpoint Test D |
| PCM | P2603:00 | Engine Coolant Pump "A" Control Circuit High: No Sub Type Information | GO to Pinpoint Test D |
| PCM | P26BE:00 | Engine Coolant Bypass Valve "D" Control Circuit Low: No Sub Type Information | GO to Pinpoint Test AX |
| PCM | P26BF:00 | Engine Coolant Bypass Valve "D" Control Circuit High: No Sub Type Information | GO to Pinpoint Test AX |
| RHVAC | B10B8:63 | Buttons: Circuit/Component Protection Time-Out | GO to Pinpoint Test AH |
| RHVAC | U0140:00 | Lost Communication With Body Control Module: No Sub Type Information | GO to Pinpoint Test Q |
| RHVAC | U0164:00 | Lost Communication with HVAC Control Module: No Sub Type Information | GO TO Pinpoint Test T |
| RHVAC | U3000:41 | Control Module: General Checksum Failure | GO TO Pinpoint Test AR |
| RHVAC | U3000:42 | Control Module: General Memory Failure | GO TO Pinpoint Test AR |
| RHVAC | U3003:16 | Battery Voltage: Circuit Voltage Below Threshold | GO to Pinpoint Test AM |
| RHVAC | U3003:17 | Battery Voltage: Circuit Voltage Above Threshold | GO to Pinpoint Test AN |
| SOBDMC | P01EB:96 | Engine Coolant Heater "A" Control Circuit Performance: Internal Component Failure | GO TO Pinpoint Test AJ |
| SOBDMC | P0531:00 | A/C Refrigerant Pressure Sensor "A" Circuit Range/Performance: No Sub Type Information | GO to Pinpoint Test A |
| SOBDMC | P0534:00 | A/C Refrigerant Charge Loss: No Sub Type Information | GO to Pinpoint Test A |
| SOBDMC | P0D6D:00 | A/C Compressor Motor "A" Low Voltage: No Sub Type Information | GO TO Pinpoint Test AI |
| SOBDMC | P0D6F:00 | A/C Compressor Motor High Current: No Sub Type Information | GO TO Pinpoint Test AI |
| SOBDMC | P0D71:00 | Performance - Air Conditioning (A/C) Compressor Control Module Internal Sensor Temperature: No Sub-type Information | GO TO Pinpoint Test AI |
| SOBDMC | P2611:00 | Air Conditioning Refrigerant Distribution Valve Control Circuit/Open "A": No Sub Type Information | GO TO Pinpoint Test AS |
| SOBDMC | P2612:00 | Air Conditioning Refrigerant Distribution Valve Control Circuit "A" Low: No Sub Type Information | GO TO Pinpoint Test AS |
| SOBDMC | P2613:00 | Air Conditioning Refrigerant Distribution Valve Control Circuit High Signal "A": No Sub Type Information | GO TO Pinpoint Test AS |
| SOBDMC | P26FD:00 | Air Conditioning (A/C) Compressor Control Module Internal: No Sub-type Information | GO TO Pinpoint Test AI |
| SOBDMC | P2D41:00 | Air Conditioning (A/C) Compressor Motor Voltage "B" Performance: No Sub-type Information | GO TO Pinpoint Test AI |
| SOBDMC | P2D42:00 | Air Conditioning (A/C) Compressor Motor Voltage "B" Low: No Sub-type Information | GO TO Pinpoint Test AI |
| SOBDMC | P2D44:00 | Air Conditioning (A/C) Compressor Motor Performance: No Sub-type Information | GO TO Pinpoint Test AI |
| SOBDMC | P2DA4:00 | Coolant Heater "A" Internal Control Module Performance: No Sub-type Information | GO TO Pinpoint Test AJ |
| SOBDMC | P2DA5:00 | Coolant Heater "A" Supply Voltage Circuit: No Sub-type Information | GO TO Pinpoint Test AJ |
| SOBDMC | P2DA6:00 | Coolant Heater "A" Overheat: No Sub-type Information | GO TO Pinpoint Test AJ |
| SOBDMC | P2DA7:00 | Coolant Heater "A" Internal Control Module Control Module System Voltage: No Sub-type Information | GO TO Pinpoint Test AJ |
| SOBDMC | P2E62:00 | Engine Coolant Bypass Valve "E" Control Circuit/Open: No Sub Type Information | GO to Pinpoint Test AT |
| SOBDMC | P2E63:00 | Engine Coolant Bypass Valve "E" Control Circuit Low: No Sub Type Information | GO to Pinpoint Test AT |
| SOBDMC | P2E64:00 | Engine Coolant Bypass Valve "E" Control Circuit High: No Sub Type Information | GO to Pinpoint Test AT |
| SOBDMC | U069E:81 | Coolant Heater "A" Communication Lost: Incorrect Serial Data Received | GO TO Pinpoint Test AJ |
| SOBDMC | U069E:87 | Coolant Heater "A" Communication Lost: Missing Messages | GO TO Pinpoint Test AJ |
Symptom Charts
Symptom Chart - Climate Control Systems
The diagnosis in this manual assumes a certain level of skill and knowledge of Ford-approved diagnostic procedures.
REFER TO: Diagnostic Methods (100-00 General Information, Description and Operation).
| Condition | Action |
|---|---|
| Unable to Duplicate Customer Concern and No Diagnostic Trouble Codes (DTCs) Present. | GO to Pinpoint Test I |
| Module Does Not Respond to Diagnostic Scan Tool | REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing). |
| Externally Controlled Variable Displacement Compressor (EVDC) Poor Performance/Not Operating Properly | GO to Pinpoint Test C |
| Insufficient Air Conditioning (A/C) Cooling | GO to Pinpoint Test AY |
| A/C Inoperative, Not HEV | GO to Pinpoint Test M |
| Air Conditioning (A/C) Always On - A/C Mode Always Commanded On - NOT HEV | GO to Pinpoint Test N |
| A/C Pressure Relief Valve Venting | GO to Pinpoint Test AW |
| ACCM Electric A/C Compressor Inoperative | GO TO Pinpoint Test AI |
| Air Intake Door Inoperative | GO to Pinpoint Test J |
| Front Blower Motor Inoperative | GO TO Pinpoint Test O |
| Front Blower Motor Operates Incorrectly | GO to Pinpoint Test P |
| Rear Blower Motor Inoperative | GO to Pinpoint Test AC |
| Rear Blower Motor Operates Incorrectly | GO to Pinpoint Test advertisement |
| Incorrect or Erratic Airflow Direction from Instrument Panel Outlets | GO to Pinpoint Test K |
| Incorrect or Erratic Airflow Direction from Rear Outlets | GO TO Pinpoint Test AE |
| Insufficient, intermittent or no heat | GO to Pinpoint Test L |
| Reduced Airflow at Outlets | GO to Pinpoint Test AZ |
| Temperature Control Inoperative or Operates Incorrectly - Driver Side | GO to Pinpoint Test G |
| Temperature Control Inoperative or Operates Incorrectly - Passenger Side | GO to Pinpoint Test H |
| Rear Temperature Control Inoperative or Operates Incorrectly | GO TO Pinpoint Test AF |
| Temperature Setting Does Not Persist After Ignition Off | INSTALL a new HVAC control module. REFER to the appropriate procedure in Group 412-00. |
| NVH with A/C On | GO to Pinpoint Test BA |
Pinpoint Tests
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PINPOINT TEST A: P0531, P0532, P0533, P0534 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsA/C Pressure Sensor, REFER to: Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
Visual Inspection and Pre-checks
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| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | ||||||||||||||||||||||||||||||||||||||||
| A1 COMPARE PCM (POWERTRAIN CONTROL MODULE) PID (PARAMETER IDENTIFICATION) PRESSURE SENSOR TO MANIFOLD GAUGE SET READINGS | ||||||||||||||||||||||||||||||||||||||||
Are the manifold gauge set and PID pressure values, corrected for ambient temperature, within ± 103 kPa (15 psi)?
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| A2 CHECK THE AIR CONDITIONING (A/C) PRESSURE SENSOR CIRCUITS FOR A SHORT TO VOLTAGE | ||||||||||||||||||||||||||||||||||||||||
Is there voltage present?
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| A3 CHECK THE A/C PRESSURE SENSOR CIRCUITS FOR A SHORT TO GROUND | ||||||||||||||||||||||||||||||||||||||||
Is the resistance greater than 10000 ohms?
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| A4 CHECK THE A/C PRESSURE SENSOR CIRCUITS FOR AN OPEN | ||||||||||||||||||||||||||||||||||||||||
Is the resistance less than 3 ohms?
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| A5 CHECK THE A/C PRESSURE SENSOR CIRCUITS FOR A SHORT TO VOLTAGE | ||||||||||||||||||||||||||||||||||||||||
Is the resistance greater than 10000 ohms?
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| A6 CHECK THE PCM OPERATION | ||||||||||||||||||||||||||||||||||||||||
Is the concern still present?
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Internet Explorer version 11 or later is required to perform this Pinpoint test. PINPOINT TEST B: P0645:00, P2CFC:00, P2CFD:00, P2CFE:00 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsWhen A/C is requested and the A/C line pressure allows, the PCM grounds the A/C clutch control circuit, which is hard-wired to the A/C clutch control input processing in the BCMC. For more information on A/C request, REFER to: Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
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| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | ||||||||||||||||||||||
| B1 CHECK THE A/C CLUTCH RELAY COIL CONTROL CIRCUIT FOR A SHORT TO VOLTAGE | ||||||||||||||||||||||
Is there voltage present?
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| B2 CHECK THE A/C CLUTCH RELAY COIL CONTROL CIRCUIT FOR A SHORT TO GROUND | ||||||||||||||||||||||
Is the resistance greater than 10000 Ohms?
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| B3 CHECK THE A/C CLUTCH RELAY COIL CONTROL CIRCUIT FOR AN OPEN | ||||||||||||||||||||||
Is the resistance less than 3 ohms?
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| B4 CHECK THE PCM OPERATION | ||||||||||||||||||||||
Is the concern still present?
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| B5 CHECK BCMC (BODY CONTROL MODULE C) OPERATION | ||||||||||||||||||||||
Is the concern still present?
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PINPOINT TEST C: P06A0 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsThe externally controlled variable displacement compressor is controlled by the PCM. The PCM pulse width modulates the ground in accordance with the externally controlled variable displacement compressor to vary the air conditioning compressor displacement. REFER TO: Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
Visual Inspection and Pre-checks
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| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | ||||||||||||||||||||||
| C1 EXTERNALLY CONTROLLED VARIABLE DISPLACEMENT COMPRESSOR (EVDC) CHECK OPERATION USING THE A/C COMPRESSOR CONTROL VALVE ELECTRONIC TESTER | ||||||||||||||||||||||
Did the low-side suction pressure decrease or the high-side pressure increase?
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| C2 CHECK THE VOLTAGE AT THE AIR CONDITIONING (A/C) COMPRESSOR CONTROL SOLENOID | ||||||||||||||||||||||
Is the voltage greater than 11 volts?
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| C3 CHECK THE AIR CONDITIONING (A/C) COMPRESSOR DISPLACEMENT CONTROL VALVE CIRCUIT FOR A SHORT TO VOLTAGE | ||||||||||||||||||||||
Is there voltage present?
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| C4 CHECK THE AIR CONDITIONING (A/C) COMPRESSOR DISPLACEMENT CONTROL VALVE CIRCUIT FOR A SHORT TO GROUND | ||||||||||||||||||||||
Is the resistance greater than 10000 Ohms?
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| C5 CHECK THE AIR CONDITIONING (A/C) COMPRESSOR DISPLACEMENT CONTROL VALVE CIRCUIT FOR AN OPEN | ||||||||||||||||||||||
Is the resistance less than 3 ohms?
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| C6 CHECK THE PCM (POWERTRAIN CONTROL MODULE) OPERATION | ||||||||||||||||||||||
Is the concern still present?
|
PINPOINT TEST D: INSUFFICIENT HEATING IN AUTO START-STOP MODE ONLY For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsCabin heater coolant pump. REFER TO: Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
Visual Inspection and Pre-checks
|
||||||||||||||||||||||||||||||||||||||||
| NOTICE: Use the correct probe adapter(s) when making measurements. Using incorrect probe adapter(s) may damage the connector. | ||||||||||||||||||||||||||||||||||||||||
| D1 CHECK THE CABIN HEATER COOLANT PUMP | ||||||||||||||||||||||||||||||||||||||||
Does the cabin heater coolant pump operate?
|
||||||||||||||||||||||||||||||||||||||||
| D2 CHECK THE CABIN HEATER COOLANT PUMP CIRCUITS FOR A SHORT TO VOLTAGE | ||||||||||||||||||||||||||||||||||||||||
Is voltage present?
|
||||||||||||||||||||||||||||||||||||||||
| D3 CHECK THE CABIN HEATER COOLANT PUMP CIRCUITS FOR A SHORT TO GROUND | ||||||||||||||||||||||||||||||||||||||||
Is the resistance greater than 10000 ohms?
|
||||||||||||||||||||||||||||||||||||||||
| D4 CHECK THE CABIN HEATER COOLANT PUMP CIRCUITS FOR AN OPEN CIRCUIT | ||||||||||||||||||||||||||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||||||||||||||||||||||||||
| D5 CHECK THE ENGINE COOLANT LEVEL | ||||||||||||||||||||||||||||||||||||||||
Is the engine coolant level within specification?
|
||||||||||||||||||||||||||||||||||||||||
| D6 CLEAR ALL PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES | ||||||||||||||||||||||||||||||||||||||||
Does the cabin coolant pump operate?
|
||||||||||||||||||||||||||||||||||||||||
| D7 CHECK THE PCM (POWERTRAIN CONTROL MODULE) FOR PROPER OPERATION | ||||||||||||||||||||||||||||||||||||||||
Is the concern still present?
|
PINPOINT TEST E: B1A61:11, B1A61:15, B1A69:11, B1A69:15, B1A69:92 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsIn-car temperature and humidity sensor. Refer to: Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
|
||||||||||||||||||||||||||||
| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | ||||||||||||||||||||||||||||
| E1 CHECK THE IN-VEHICLE TEMPERATURE AND HUMIDITY SENSOR CIRCUITS FOR A SHORT TO VOLTAGE | ||||||||||||||||||||||||||||
Is there voltage present?
|
||||||||||||||||||||||||||||
| E2 CHECK THE IN-VEHICLE TEMPERATURE AND HUMIDITY SENSOR CIRCUITS FOR A SHORT TO GROUND | ||||||||||||||||||||||||||||
Is the resistance greater than 10000 ohms?
|
||||||||||||||||||||||||||||
| E3 CHECK THE IN-VEHICLE TEMPERATURE AND HUMIDITY SENSOR CIRCUITS FOR AN OPEN | ||||||||||||||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||||||||||||||
| E4 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE FOR PROPER OPERATION | ||||||||||||||||||||||||||||
Is the concern still present?
|
PINPOINT TEST F: B1B71:11, B1B71:15 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsEvaporator temperature sensor. Refer to: Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
|
|||||||||||||
| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | |||||||||||||
| F1 CHECK THE EVAPORATOR TEMPERATURE SENSOR CIRCUITS FOR A SHORT TO VOLTAGE | |||||||||||||
Is there voltage present?
|
|||||||||||||
| F2 CHECK THE EVAPORATOR TEMPERATURE SENSOR CIRCUITS FOR A SHORT TO GROUND | |||||||||||||
Is the resistance greater than 10000 Ohms?
|
|||||||||||||
| F3 CHECK THE EVAPORATOR TEMPERATURE SENSOR CIRCUITS FOR AN OPEN | |||||||||||||
Is the resistance less than 3 ohms?
|
|||||||||||||
| F4 CHECK THE EVAPORATOR TEMPERATURE SENSOR CIRCUITS FOR A SHORT | |||||||||||||
Is the resistance greater than 10000 Ohms?
|
|||||||||||||
| F5 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE FOR PROPER OPERATION | |||||||||||||
Is the concern still present?
|
PINPOINT TEST G: TEMPERATURE CONTROL INOPERATIVE OR INCORRECT - DRIVER SIDE For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsTemperature door actuator - driver side. Refer to: Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). During the actuator calibration cycle, the HVAC control module drives the temperature door until the door reaches both internal stops in the HVAC housing. If the blend door is temporarily blocked or stuck during the calibration cycle, the HVAC control module may interpret this as the actual end of door travel. When this condition occurs and the HVAC control module commands the actuator to its end of travel, the airflow temperature may differ from the expected temperature. DTC Fault Trigger Conditions
Possible Sources
|
||||||||||||||||||||||
| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | ||||||||||||||||||||||
| G1 CHECK THE DRIVER SIDE TEMPERATURE DOOR ACTUATOR CIRCUITS FOR A SHORT TO VOLTAGE | ||||||||||||||||||||||
Is there voltage present?
|
||||||||||||||||||||||
| G2 CHECK THE DRIVER SIDE TEMPERATURE DOOR ACTUATOR CIRCUITS FOR A SHORT TO GROUND | ||||||||||||||||||||||
Is the resistance greater than 10000 ohms?
|
||||||||||||||||||||||
| G3 CHECK THE DRIVER SIDE TEMPERATURE DOOR ACTUATOR CIRCUITS FOR AN OPEN | ||||||||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||||||||
| G4 CHECK THE DRIVER SIDE TEMPERATURE DOOR ACTUATOR POWER SUPPLY CIRCUIT VOLTAGE | ||||||||||||||||||||||
Is there voltage present?
|
||||||||||||||||||||||
| G5 CHECK THE ACTUATOR FOR PROPER OPERATION | ||||||||||||||||||||||
Is the concern still present?
|
||||||||||||||||||||||
| G6 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE FOR PROPER OPERATION | ||||||||||||||||||||||
Is the concern still present?
|
PINPOINT TEST H: TEMPERATURE CONTROL INOPERATIVE OR INCORRECT - PASSENGER SIDE For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsTemperature door actuator - passenger side. Refer to: Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). During the actuator calibration cycle, the HVAC control module drives the temperature door until the door reaches both internal stops in the HVAC housing. If the temperature door is temporarily blocked or stuck during the calibration cycle, the HVAC control module may interpret this as the actual end of door travel. When this condition occurs and the HVAC control module commands the actuator to its end of travel, the airflow temperature may differ from the expected temperature. DTC Fault Trigger Conditions
Possible Sources
|
|||||||||||||||||||||||||
| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | |||||||||||||||||||||||||
| H1 CHECK THE PASSENGER SIDE TEMPERATURE DOOR ACTUATOR CIRCUITS FOR A SHORT TO VOLTAGE | |||||||||||||||||||||||||
Is there voltage present?
|
|||||||||||||||||||||||||
| H2 CHECK THE PASSENGER SIDE TEMPERATURE DOOR ACTUATOR CIRCUITS FOR A SHORT TO GROUND | |||||||||||||||||||||||||
Is the resistance greater than 10000 ohms?
|
|||||||||||||||||||||||||
| H3 CHECK THE PASSENGER SIDE TEMPERATURE DOOR ACTUATOR CIRCUITS FOR AN OPEN | |||||||||||||||||||||||||
Is the resistance less than 3 ohms?
|
|||||||||||||||||||||||||
| H4 CHECK THE PASSENGER SIDE TEMPERATURE DOOR ACTUATOR POWER SUPPLY CIRCUIT VOLTAGE | |||||||||||||||||||||||||
Is there voltage present?
|
|||||||||||||||||||||||||
| H5 CHECK THE ACTUATOR FOR PROPER OPERATION | |||||||||||||||||||||||||
Is the concern still present?
|
|||||||||||||||||||||||||
| H6 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | |||||||||||||||||||||||||
Is the concern still present?
|
PINPOINT TEST I: CONCERN CANNOT BE DUPLICATED AND NO DIAGNOSTIC TROUBLE CODES (DTCS) PRESENT Normal Operation and Fault SymptomsThe purpose of this Pinpoint Test is to check the functions of the HVAC system and to determine the correct Pinpoint Test for the HVAC symptom. Possible Sources
|
||||
| NOTE: Before performing the following test, diagnose all Heating, Ventilation and Air Conditioning (HVAC) Control Module and Powertrain Control Module (PCM) Diagnostic Trouble Codes (DTCs). | ||||
| I1 CHECK BLOWER MOTOR OPERATION | ||||
Does the blower motor operate in all speed ranges?
|
||||
| I2 CHECK AIRFLOW OPERATION | ||||
Does the airflow come out of the correct outlets?
|
||||
| I3 CHECK TEMPERATURE CONTROL OPERATION | ||||
Does the temperature change from very warm to cool?
|
||||
| I4 CHECK A/C (AIR CONDITIONING) CLUTCH DOES NOT ENGAGE WITH A/C (AIR CONDITIONING) OFF | ||||
Is the outlet temperature close to the ambient temperature?
|
||||
| I5 CHECK A/C (AIR CONDITIONING) CLUTCH ENGAGEMENT IN A/C (AIR CONDITIONING) MODE | ||||
Does the A/C clutch engage when PANEL mode is selected and the A/C button is pressed (indicator on)?
|
||||
| I6 RECIRCULATED AIR OPERATION CHECK | ||||
Does the airflow noise increase when RECIRC mode is selected (indicator on)?
|
||||
| I7 CHECK IN-VEHICLE TEMPERATURE AND HUMIDITY SENSOR ASPIRATOR FAN OPERATION | ||||
Is the cloth drawn toward the sensor opening?
|
PINPOINT TEST J: INTAKE DOOR INOPERATIVE For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsIntake Door Actuator, REFER TO: Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). During the actuator calibration cycle, the HVAC control module drives the recirculation door until the door reaches both internal stops in the HVAC housing. If the recirculation door is temporarily blocked or pinched during the calibration cycle, the HVAC control module may interpret this as the actual end of door travel. When this condition occurs and the HVAC control module commands the actuator to its end of travel, the air inlet may not be from the expected source. DTC Fault Trigger Conditions
Possible Sources
|
||||||||||||||||||||||
| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | ||||||||||||||||||||||
| J1 CHECK THE INTAKE DOOR ACTUATOR CIRCUITS FOR A SHORT TO VOLTAGE | ||||||||||||||||||||||
Is there voltage present?
|
||||||||||||||||||||||
| J2 CHECK THE INTAKE DOOR ACTUATOR CIRCUITS FOR A SHORT TO GROUND | ||||||||||||||||||||||
Is the resistance greater than 10000 ohms?
|
||||||||||||||||||||||
| J3 CHECK THE INTAKE DOOR ACTUATOR CIRCUITS FOR AN OPEN | ||||||||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||||||||
| J4 CHECK THE VOLTAGE SUPPLY TO THE INTAKE DOOR ACTUATOR | ||||||||||||||||||||||
Is there voltage present?
|
||||||||||||||||||||||
| J5 CHECK FOR PROPER ACTUATOR OPERATION | ||||||||||||||||||||||
Is the concern still present?
|
||||||||||||||||||||||
| J6 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | ||||||||||||||||||||||
Is the concern still present?
|
PINPOINT TEST K: INCORRECT OR MISDIRECTED AIRFLOW FROM FRONT SYSTEM OUTLETS For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsAir Distribution, REFER TO: Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). During the actuator calibration cycle, the HVAC control module drives the defrost door and the footwell/register door until the doors reach both internal stops in the HVAC housing. If the defrost door or the footwell/register door is temporarily blocked or pinched during the calibration cycle, the HVAC control module may interpret this as the actual end of door travel. When this condition occurs and the HVAC control module commands the actuator to its end of travel, the airflow may not be from the expected outlets. DTC Fault Trigger Conditions
Possible Sources
|
||||||||||||||||||||||
| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | ||||||||||||||||||||||
| K1 CHECK THE AIR DISTRIBUTION DOOR ACTUATOR CIRCUITS FOR A SHORT TO VOLTAGE | ||||||||||||||||||||||
Is there voltage present?
|
||||||||||||||||||||||
| K2 CHECK THE AIR DISTRIBUTION DOOR ACTUATOR CIRCUITS FOR A SHORT TO GROUND | ||||||||||||||||||||||
Is the resistance greater than 10000 ohms?
|
||||||||||||||||||||||
| K3 CHECK THE AIR DISTRIBUTION DOOR ACTUATOR CIRCUITS FOR AN OPEN | ||||||||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||||||||
| K4 CHECK THE VOLTAGE SUPPLY TO THE AIR DISTRIBUTION DOOR ACTUATOR | ||||||||||||||||||||||
Is there voltage present?
|
||||||||||||||||||||||
| K5 CHECK THE ACTUATOR FOR PROPER OPERATION | ||||||||||||||||||||||
Is the concern still present?
|
||||||||||||||||||||||
| K6 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE FOR PROPER OPERATION | ||||||||||||||||||||||
Is the concern still present?
|
PINPOINT TEST L: INSUFFICIENT, INTERMITTENT, OR NO HEATING Normal Operation and Fault SymptomsWhen the engine is warmed to operating temperature, coolant flows from the engine through the heater core and returns to the engine. Correct coolant temperature is critical for good heater performance. Possible Sources
Visual Inspection and Pre-checks
|
||||
| L1 CHECK THE ENGINE COOLANT LEVEL FOR CORRECT LEVEL | ||||
Is the engine coolant level correct (hot or cold) as indicated on the engine coolant recovery reservoir?
|
||||
| L2 CHECK THE ENGINE COOLING SYSTEM FOR LEAKS | ||||
Is the cooling system free of leaks?
|
||||
| L3 CHECK THE COOLANT FLOW TO THE HEATER CORE | ||||
Is the heater core inlet hose temperature above 66 °C?
|
||||
| L4 CHECK THE HEATER CORE FOR A KINK OR RESTRICTION | ||||
Is the heater core outlet hose temperature similar to the inlet hose temperature within approximately 6-17°C (10-30°F)?
|
PINPOINT TEST M: A/C (AIR CONDITIONING) INOPERATIVE - NON-HEV (HYBRID ELECTRIC VEHICLE) For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsA/C request. REFER to: Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). Possible Sources
Visual Inspection and Pre-checks |
||||||||||||||||||||||||||||||||
| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | ||||||||||||||||||||||||||||||||
| NOTE: Some Powertrain Control Module (PCM) Diagnostic Trouble Codes (DTCs) may prevent the A/C system from operating. If any PCM Diagnostic Trouble Codes (DTCs) are retrieved, diagnose them first. Refer to the Diagnostic Trouble Code (DTC) Chart. | ||||||||||||||||||||||||||||||||
| M1 CHECK THE A/C (AIR CONDITIONING) SYSTEM PRESSURE | ||||||||||||||||||||||||||||||||
Is the A/C system pressure above 290 kPa (42 psi)?
|
||||||||||||||||||||||||||||||||
| M2 CHECK THE COMMUNICATION NETWORK | ||||||||||||||||||||||||||||||||
Do the HVAC control module and PCM pass the network test?
|
||||||||||||||||||||||||||||||||
| M3 COMPARE THE PCM (POWERTRAIN CONTROL MODULE) A/C (AIR CONDITIONING) PRESSURE PID (PARAMETER IDENTIFICATION) VALUE WITH THE MANIFOLD GAUGE SET VALUE | ||||||||||||||||||||||||||||||||
Are the manifold gauge set and PID pressure values, adjusted for ambient temperature, within ±103 kPa (15 psi)?
|
||||||||||||||||||||||||||||||||
| M4 COMPARE THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE EVAPORATOR TEMPERATURE PID (PARAMETER IDENTIFICATION) TO THE PCM (POWERTRAIN CONTROL MODULE) PID AMBIENT AIR TEMPERATURE (PARAMETER IDENTIFICATION) | ||||||||||||||||||||||||||||||||
Are the temperature values similar [typically within 18ºC (32.4ºF)]?
|
||||||||||||||||||||||||||||||||
| M5 COMPARE THE PCM (POWERTRAIN CONTROL MODULE) PID INTAKE AIR TEMPERATURE (PARAMETER IDENTIFICATION) AND OTHER TEMPERATURE SENSOR READINGS TO THE PCM (POWERTRAIN CONTROL MODULE) PID AMBIENT AIR TEMPERATURE (PARAMETER IDENTIFICATION) | ||||||||||||||||||||||||||||||||
Are the temperature values similar [typically within 18ºC (32.4ºF)]?
|
||||||||||||||||||||||||||||||||
| M6 RESET THE AMBIENT AIR TEMPERATURE (AAT) SENSOR | ||||||||||||||||||||||||||||||||
Does the A/C compressor clutch engage?
|
||||||||||||||||||||||||||||||||
| M7 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE A/C (AIR CONDITIONING) SWITCH PID (PARAMETER IDENTIFICATION) WITH THE A/C ON | ||||||||||||||||||||||||||||||||
Does the PID display ON or Yes when the button is pressed?
|
||||||||||||||||||||||||||||||||
| M8 CHECK THE PCM (POWERTRAIN CONTROL MODULE) A/C (AIR CONDITIONING) REQUEST SIGNAL PID (PARAMETER IDENTIFICATION) WITH THE A/C ON | ||||||||||||||||||||||||||||||||
Does the PID display ON or Yes when the button is pressed?
|
||||||||||||||||||||||||||||||||
| M9 A/C (AIR CONDITIONING) COMPRESSOR CONTROL ON | ||||||||||||||||||||||||||||||||
Does the A/C compressor clutch engage?
|
||||||||||||||||||||||||||||||||
| M10 CHECK THE A/C (AIR CONDITIONING) CLUTCH RELAY COIL CONTROL CIRCUIT FOR AN OPEN | ||||||||||||||||||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||||||||||||||||||
| M11 CHECK THE A/C (AIR CONDITIONING) COMPRESSOR CLUTCH COIL VOLTAGE SUPPLY CIRCUIT FOR AN OPEN | ||||||||||||||||||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||||||||||||||||||
| M12 CHECK THE A/C (AIR CONDITIONING) COMPRESSOR CLUTCH COIL GROUND CIRCUIT FOR AN OPEN | ||||||||||||||||||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||||||||||||||||||
| M13 CHECK THE VOLTAGE AT THE A/C (AIR CONDITIONING) COMPRESSOR CLUTCH COIL | ||||||||||||||||||||||||||||||||
Is the voltage greater than 11 volts?
|
||||||||||||||||||||||||||||||||
| M14 CHECK THE A/C (AIR CONDITIONING) COMPRESSOR CLUTCH AIR GAP | ||||||||||||||||||||||||||||||||
Is the air conditioning compressor clutch air gap greater than 0.6 mm (0.0236 in)?
|
||||||||||||||||||||||||||||||||
| M15 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE OPERATION | ||||||||||||||||||||||||||||||||
Is the concern still present?
|
||||||||||||||||||||||||||||||||
| M16 CHECK THE A/C (AIR CONDITIONING) CLUTCH DISABLE RELAY INPUT | ||||||||||||||||||||||||||||||||
Is any of the conditions described above outside normal values?
|
PINPOINT TEST N: A/C (AIR CONDITIONING) ALWAYS ON - A/C MODE ALWAYS ON - NON-HEV (HYBRID ELECTRIC VEHICLE) For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsA/C request. REFER to: Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
Visual Inspection and Pre-checks
|
||||||||||
| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | ||||||||||
| N1 RECHECK THE PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS) | ||||||||||
Does DTC P1464 return?
|
||||||||||
| N2 CHECK THE A/C (AIR CONDITIONING) COMPRESSOR CLUTCH COIL VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE | ||||||||||
Is there voltage present?
|
||||||||||
| N3 COMPARE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE EVAPORATOR TEMPERATURE PID (PARAMETER IDENTIFICATION) TO PCM (POWERTRAIN CONTROL MODULE) PID AMBIENT AIR TEMPERATURE (PARAMETER IDENTIFICATION) | ||||||||||
Are the temperature values similar [typically within 18ºC (32.4ºF)]?
|
||||||||||
| N4 COMPARE PCM (POWERTRAIN CONTROL MODULE) A/C (AIR CONDITIONING) PRESSURE SENSOR PID (PARAMETER IDENTIFICATION) WITH MANIFOLD PRESSURE SENSOR VALUE | ||||||||||
Are the manifold gauge set and PID pressure values, adjusted for ambient temperature, within ±103 kPa (15 psi)?
|
||||||||||
| N5 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE A/C (AIR CONDITIONING) SWITCH STATUS PID (PARAMETER IDENTIFICATION) WITH A/C (AIR CONDITIONING) OFF | ||||||||||
Does the PID display when the A/C button is pressed and turn off when it is released?
|
||||||||||
| N6 CHECK PCM (POWERTRAIN CONTROL MODULE) A/C (AIR CONDITIONING) REQUEST SIGNAL PID (PARAMETER IDENTIFICATION) WITH A/C (AIR CONDITIONING) OFF | ||||||||||
Is the PID indicator off?
|
||||||||||
| N7 CHECK PCM (POWERTRAIN CONTROL MODULE) A/C (AIR CONDITIONING) REQUEST SIGNAL PID (PARAMETER IDENTIFICATION) WITH HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE DISCONNECTED | ||||||||||
Is the PID indicator off?
|
||||||||||
| N8 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION FOR CORRECTNESS | ||||||||||
Is the concern still present?
|
||||||||||
| N9 CHECK PCM (POWERTRAIN CONTROL MODULE) OPERATION FOR CORRECTNESS | ||||||||||
Is the concern still present?
|
PINPOINT TEST O: FRONT BLOWER MOTOR INOPERATIVE For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsAir Distribution, REFER TO: Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
Visual Inspection and Pre-checks
|
||||||||||||||||||
| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | ||||||||||||||||||
| O1 CHECK FAN RELAY CONTROL CIRCUIT FOR SHORT TO GROUND | ||||||||||||||||||
Is the resistance greater than 10000 Ohms?
|
||||||||||||||||||
| O2 CHECK FAN MOTOR RELAY CONTROL CIRCUIT FOR OPEN | ||||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||||
| O3 CHECK FAN CONTROL MODULE VOLTAGE CIRCUIT FOR OPEN | ||||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||||
| O4 CHECK VOLTAGE AT FAN MOTOR CONTROL MODULE | ||||||||||||||||||
Is the voltage greater than 11 volts?
|
||||||||||||||||||
| O5 CHECK FAN CONTROL MODULE GROUND CIRCUIT FOR OPEN | ||||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||||
| O6 CHECK FAN MOTOR PWM (PULSE WIDTH MODULATION) CONTROL MODULE CIRCUIT FOR SHORT TO VOLTAGE | ||||||||||||||||||
Is there voltage present?
|
||||||||||||||||||
| O7 CHECK FAN MOTOR PWM (PULSE WIDTH MODULATION) CONTROL MODULE CIRCUIT FOR OPEN | ||||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||||
| O8 CHECK FAN MOTOR CONTROL MODULE FOR CORRECT OPERATION | ||||||||||||||||||
Is the concern still present?
|
||||||||||||||||||
| O9 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION FOR CORRECTNESS | ||||||||||||||||||
Is the concern still present?
|
PINPOINT TEST P: FRONT BLOWER MOTOR OPERATES INCORRECTLY For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsAir handling. REFER to: Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
|
||||||||||||
| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | ||||||||||||
| P1 CHECK FAN MOTOR OPERATION | ||||||||||||
Does the fan motor operate at all settings?
|
||||||||||||
| P2 CHECK FAN MOTOR PWM (PULSE WIDTH MODULATION) CONTROL MODULE CIRCUIT FOR SHORT TO GROUND | ||||||||||||
Is the resistance greater than 10000 Ohms?
|
||||||||||||
| P3 CHECK FAN MOTOR RELAY CONTROL CIRCUIT FOR SHORT TO VOLTAGE | ||||||||||||
Is there voltage present?
|
||||||||||||
| P4 CHECK FAN MODULE VOLTAGE CIRCUIT FOR SHORT TO VOLTAGE | ||||||||||||
Is there voltage present?
|
||||||||||||
| P5 CHECK FAN MOTOR CONTROL MODULE FOR CORRECT OPERATION | ||||||||||||
Is the concern still present?
|
||||||||||||
| P6 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION FOR CORRECTNESS | ||||||||||||
Is the concern still present?
|
PINPOINT TEST Q: U0140:00 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsThe ACCM, HVAC control module and RHVAC control module exchange data with the BCM over the CAN bus. If messages are missing or not received from the BCM, the climate control system may operate incorrectly. Inspect the BCM and HVAC control module connections for loose or corroded connections. DTC Fault Trigger Conditions
Possible Sources
|
||||||||||||
| Q1 CONFIRM THE CONCERN | ||||||||||||
Is the observed symptom present?
|
||||||||||||
| Q2 CHECK THE COMMUNICATION NETWORK | ||||||||||||
Does the BCM pass the network test?
|
||||||||||||
| Q3 CHECK FOR NON-NETWORK DIAGNOSTIC TROUBLE CODES (DTCS) | ||||||||||||
Are there any non-network diagnostic trouble codes (DTCs)?
|
||||||||||||
| Q4 CHECK THE BCM (BODY CONTROL MODULE) FOR NETWORK DIAGNOSTIC TROUBLE CODES (DTCS) | ||||||||||||
Are there any non-network diagnostic trouble codes (DTCs)?
|
||||||||||||
| Q5 RECHECK DTC (DIAGNOSTIC TROUBLE CODE) U0140:00 | ||||||||||||
Is DTC U0140:00 still present?
|
||||||||||||
| Q6 CHECK FOR OTHER CAUSES OF NETWORK COMMUNICATION CONCERNS | ||||||||||||
Is the observed symptom still present?
|
||||||||||||
| Q7 CHECK BCM (BODY CONTROL MODULE) OPERATION | ||||||||||||
Is the concern still present?
|
PINPOINT TEST R: U0151:00 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsFor control logic, REFER to Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
|
||||||
| R1 VERIFY CUSTOMER CONCERN | ||||||
Is the observed symptom present?
|
||||||
| R2 CHECK COMMUNICATION NETWORK | ||||||
Does the RCM pass the network test?
|
||||||
| R3 RETRIEVE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM RCM (RESTRAINTS CONTROL MODULE) SELF-TEST | ||||||
Are any Diagnostic Trouble Codes (DTCs) recorded?
|
||||||
| R4 RETRIEVE STORED DIAGNOSTIC TROUBLE CODES (DTCS) FROM HEATING, VENTILATION AND AIR CONDITIONING (HVAC) MODULE SELF-TEST | ||||||
Is DTC U3003:16 or DTC U3003:17 stored?
|
||||||
| R5 RECHECK DIAGNOSTIC TROUBLE CODES (DTCS) IN HEATING, VENTILATION AND AIR CONDITIONING (HVAC) MODULE | ||||||
Is DTC U0151:00 still present?
|
||||||
| R6 CHECK DTC U0151:00 IS SET IN OTHER MODULES | ||||||
Is DTC U0151:00 set in other network modules?
|
||||||
| R7 CHECK RCM (RESTRAINTS CONTROL MODULE) OPERATION | ||||||
Is the concern still present?
|
||||||
| R8 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | ||||||
Is the concern still present?
|
PINPOINT TEST S: U0155:00 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsWith the ignition on, the IPC sends messages to the HVAC Control Module over MS-CAN. If the HVAC Control Module does not receive these messages within the specified time, the module sets a DTC. This may be caused by an IPC failure, a circuit fault in the MS-CAN, or excessive network traffic. For information on the messages the IPC sends to the HVAC Control Module, REFER to Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
|
||||||
| S1 CHECK CUSTOMER CONCERN | ||||||
Is the observed symptom present?
|
||||||
| S2 CHECK COMMUNICATION NETWORK | ||||||
Does the IPC pass the network test?
|
||||||
| S3 RETRIEVE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST | ||||||
Are any Diagnostic Trouble Codes (DTCs) recorded?
|
||||||
| S4 RETRIEVE STORED DIAGNOSTIC TROUBLE CODES (DTCS) FROM HEATING, VENTILATION AND AIR CONDITIONING (HVAC) MODULE SELF-TEST | ||||||
Is DTC U3003:16 or DTC U3003:17 stored?
|
||||||
| S5 RECHECK DIAGNOSTIC TROUBLE CODES (DTCS) IN HEATING, VENTILATION AND AIR CONDITIONING (HVAC) MODULE | ||||||
Is DTC U0155:00 still present?
|
||||||
| S6 CHECK DTC U0155:00 IS SET IN OTHER MODULES | ||||||
Is DTC U0155:00 set in any other network modules?
|
||||||
| S7 CHECK IPC (INSTRUMENT PANEL CLUSTER) OPERATION | ||||||
Is the concern still present?
|
||||||
| S8 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | ||||||
Is the concern still present?
|
PINPOINT TEST T: U0164:00 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsFor control logic, REFER to Rear Climate Control - System Operation and Component Description (412-02 Rear Climate Control, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
|
||||||
| T1 VERIFY THE CUSTOMER CONCERN | ||||||
Is the observed symptom present?
|
||||||
| T2 CHECK THE COMMUNICATION NETWORK | ||||||
Does the HVAC Control Module pass the network test?
|
||||||
| T3 RETRIEVE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE SELF-TEST | ||||||
Are any Diagnostic Trouble Codes (DTCs) recorded?
|
||||||
| T4 RETRIEVE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM (RHVAC) REAR HEATING, VENTILATION AND AIR CONDITIONING CONTROL MODULE SELF-TEST | ||||||
Is DTC U3003:16 or DTC U3003:17 stored?
|
||||||
| T5 RECHECK (RHVAC) REAR HEATING, VENTILATION AND AIR CONDITIONING CONTROL MODULE DIAGNOSTIC TROUBLE CODES (DTCS) | ||||||
Is DTC U0164:00 still present?
|
||||||
| T6 CHECK DTC U0164:00 IS SET IN OTHER MODULES | ||||||
Is DTC U0164:00 set in other network modules?
|
||||||
| T7 CHECK RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | ||||||
Is the concern still present?
|
||||||
| T8 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | ||||||
Is the concern still present?
|
PINPOINT TEST U: U0165:00 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsREFER to: Rear Climate Control - System Operation and Component Description (412-02 Rear Climate Control, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
|
||||||
| U1 CHECK CUSTOMER CONCERN | ||||||
Is the observed symptom present?
|
||||||
| U2 CHECK COMMUNICATION NETWORK | ||||||
Does the RHVAC Control Module pass the network test?
|
||||||
| U3 RETRIEVE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE SELF-TEST | ||||||
Are any Diagnostic Trouble Codes (DTCs) recorded?
|
||||||
| U4 RETRIEVE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE SELF-TEST | ||||||
Is DTC U3003:16 or DTC U3003:17 stored?
|
||||||
| U5 RECHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE DIAGNOSTIC TROUBLE CODES (DTCS) | ||||||
Is DTC U0165:00 still present?
|
||||||
| U6 CHECK DTC U0165:00 IS SET IN OTHER MODULES | ||||||
Is DTC U0165:00 set in other network modules?
|
||||||
| U7 CHECK RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | ||||||
Is the concern still present?
|
||||||
| U8 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | ||||||
Is the concern still present?
|
PINPOINT TEST V: U0253:00 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsFor control logic, REFER to Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
|
||||||
| V1 VERIFY THE CUSTOMER CONCERN | ||||||
Is the observed symptom present?
|
||||||
| V2 CHECK THE COMMUNICATION NETWORK | ||||||
Does the APIM pass the network test?
|
||||||
| V3 RETRIEVE STORED DIAGNOSTIC TROUBLE CODES (DTCS) FROM APIM (SYNC MODULE) SELF-TEST | ||||||
Are any Diagnostic Trouble Codes (DTCs) recorded?
|
||||||
| V4 RETRIEVE STORED DIAGNOSTIC TROUBLE CODES (DTCS) FROM HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE SELF-TEST | ||||||
Is DTC U3003:16 or DTC U3003:17 stored?
|
||||||
| V5 RECHECK DIAGNOSTIC TROUBLE CODES (DTCS) IN HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE | ||||||
Is DTC U0253:00 still present?
|
||||||
| V6 CHECK DTC (DIAGNOSTIC TROUBLE CODE) U0253:00 IN OTHER MODULES | ||||||
Is DTC U0253:00 set in any other network modules?
|
||||||
| V7 CHECK APIM (SYNC MODULE) OPERATION | ||||||
Is the concern still present?
|
||||||
| V8 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | ||||||
Is the concern still present?
|
PINPOINT TEST W: U1000:00 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsFor control logic, REFER to Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
|
||||||
| W1 RECHECK DIAGNOSTIC TROUBLE CODES (DTCS) IN HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE | ||||||
Is U1000:00 present?
|
PINPOINT TEST X: B102E:11, B102E:15, B102E:92 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsAmbient air quality sensor, REFER TO: Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
Visual Inspection and Pre-checks
|
||||||||||||||||||||||
| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | ||||||||||||||||||||||
| X1 CHECK AMBIENT AIR QUALITY SENSOR CIRCUITS FOR SHORT TO VOLTAGE | ||||||||||||||||||||||
Is voltage present?
|
||||||||||||||||||||||
| X2 CHECK AMBIENT AIR QUALITY SENSOR CIRCUITS FOR SHORT TO GROUND | ||||||||||||||||||||||
Is the resistance greater than 10000 ohms?
|
||||||||||||||||||||||
| X3 CHECK AMBIENT AIR QUALITY SENSOR CIRCUITS FOR OPEN | ||||||||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||||||||
| X4 CHECK AMBIENT AIR QUALITY SENSOR CIRCUITS FOR SHORT CIRCUIT | ||||||||||||||||||||||
Is the resistance greater than 10000 ohms?
|
||||||||||||||||||||||
| X5 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | ||||||||||||||||||||||
Is the concern still present?
|
PINPOINT TEST Y: B1A63:11, B1A63:15, B1A64:11, B1A64:15 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsThe solar load sensor provides information to the HVAC control module indicating the intensity of solar load on the vehicle, and the HVAC control module adjusts the system based on this information. DTC Fault Trigger Conditions
Possible Sources
|
|||||||||||||||||||||||||
| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | |||||||||||||||||||||||||
| Y1 CHECK SOLAR LOAD SENSOR CIRCUITS FOR SHORT TO VOLTAGE | |||||||||||||||||||||||||
Is there voltage present?
|
|||||||||||||||||||||||||
| Y2 CHECK SOLAR LOAD SENSOR CIRCUITS FOR SHORT TO GROUND | |||||||||||||||||||||||||
Is the resistance greater than 10000 ohms?
|
|||||||||||||||||||||||||
| Y3 CHECK SOLAR LOAD SENSOR CIRCUITS FOR OPEN | |||||||||||||||||||||||||
Is the resistance less than 3 ohms?
|
|||||||||||||||||||||||||
| Y4 CHECK SOLAR LOAD SENSOR CIRCUITS FOR SHORT CIRCUIT | |||||||||||||||||||||||||
Is the resistance greater than 10000 ohms?
|
|||||||||||||||||||||||||
| Y5 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | |||||||||||||||||||||||||
Is the concern still present?
|
PINPOINT TEST Z: B10B3:11, B10B3:15, B10B4:11, B10B4:15, B10B5:11, B10B5:15, B10B6:11, B10B6:15 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsThe discharge air sensors provide a variable voltage signal to the HVAC control module based on the temperature of the air leaving the outlet. The HVAC control module adjusts the system based on the voltage from each sensor. Each airflow sensor receives voltage from the HVAC control module, and all sensors share a common sensor ground. An open or short to ground, short to voltage in one or more of these circuits, or a faulty discharge air sensor causes the HVAC control module to set one or more diagnostic trouble codes (DTCs). DTC Fault Trigger Conditions
Possible Sources
|
||||||||||||||||||||||||||||||||||||||||||||||
| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | ||||||||||||||||||||||||||||||||||||||||||||||
| Z1 CHECK DISCHARGE AIR TEMPERATURE SENSOR OUTPUT VOLTAGE | ||||||||||||||||||||||||||||||||||||||||||||||
Are the voltages between 4.7 and 5.1 volts?
|
||||||||||||||||||||||||||||||||||||||||||||||
| Z2 CHECK DISCHARGE AIR TEMPERATURE SENSOR CIRCUITS FOR SHORT TO VOLTAGE | ||||||||||||||||||||||||||||||||||||||||||||||
Is there voltage present?
|
||||||||||||||||||||||||||||||||||||||||||||||
| Z3 CHECK DISCHARGE AIR TEMPERATURE SENSOR CIRCUITS FOR SHORT TO GROUND | ||||||||||||||||||||||||||||||||||||||||||||||
Is the resistance greater than 10000 ohms?
|
||||||||||||||||||||||||||||||||||||||||||||||
| Z4 CHECK DISCHARGE AIR TEMPERATURE SENSOR CIRCUITS FOR OPEN | ||||||||||||||||||||||||||||||||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||||||||||||||||||||||||||||||||
| Z5 CHECK DISCHARGE AIR TEMPERATURE SENSOR CIRCUITS FOR SHORT CIRCUIT | ||||||||||||||||||||||||||||||||||||||||||||||
Is the resistance greater than 10000 ohms?
|
||||||||||||||||||||||||||||||||||||||||||||||
| Z6 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | ||||||||||||||||||||||||||||||||||||||||||||||
Is the concern still present?
|
PINPOINT TEST AA: P193E For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsThe PCM controls the air conditioning compressor clutch coil based on messages received from the BCM over the HS-CAN. When the HVAC control module determines that the air conditioning compressor must be activated, either by driver request or due to automatic climate control settings, the HVAC control module sends a message to the BCM over the MS-CAN, then the BCM sends a message to the PCM to engage the air conditioning compressor. An internal fault in the PCM, BCM or HVAC control module, or a communication fault on the MS-CAN or HS-CAN, causes the PCM to set a DTC. DTC Fault Trigger Conditions
Possible Sources
|
||||||
| AA1 CHECK THE CUSTOMER CONCERN | ||||||
Is the observed symptom present?
|
||||||
| AA2 CHECK THE COMMUNICATION NETWORK | ||||||
Do the BCM, PCM and HVAC control module pass the network test?
|
||||||
| AA3 CHECK PCM (POWERTRAIN CONTROL MODULE) AIR CONDITIONING (A/C) REQUEST PID (PARAMETER IDENTIFICATION) SIGNAL | ||||||
Does the PID display YES when the A/C button indicator is on?
|
||||||
| AA4 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE A/C (AIR CONDITIONING) SWITCH PID (PARAMETER IDENTIFICATION) | ||||||
Does the PID display ON when the A/C button indicator is illuminated?
|
||||||
| AA5 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | ||||||
Is the concern still present?
|
||||||
| AA6 CHECK BCM (BODY CONTROL MODULE) OPERATION | ||||||
Is the concern still present?
|
||||||
| AA7 CHECK PCM (POWERTRAIN CONTROL MODULE) OPERATION | ||||||
Is the concern still present?
|
PINPOINT TEST AB: C1B14:11, C1B14:12 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsThe reference voltage is supplied to the HVAC actuators and one sensor from the HVAC control module over a common circuit, and the signal returns to the HVAC control module over one common circuit. All components that share these two circuits are listed in this specific test. Access to these components is difficult. DTC Fault Trigger Conditions
Possible Sources
|
|||||||||||||
| NOTICE: Use the correct probe adapter(s) when making measurements. Using incorrect probe adapter(s) may damage the connector. | |||||||||||||
| AB1 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE DIAGNOSTIC TROUBLE CODES (DTCS) | |||||||||||||
Is DTC C1B14:11 or C1B14:12 present?
|
|||||||||||||
| AB2 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE REFERENCE VOLTAGE AND RETURN SIGNAL CIRCUITS FOR A SHORT TO VOLTAGE | |||||||||||||
Is there voltage present?
|
|||||||||||||
| AB3 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE REFERENCE VOLTAGE AND RETURN SIGNAL CIRCUITS FOR A SHORT TO GROUND | |||||||||||||
Is the resistance greater than 10000 ohms?
|
|||||||||||||
| AB4 CHECK THE REFERENCE VOLTAGE CIRCUIT AND RETURN SIGNAL CIRCUIT FOR A SHORT TOGETHER | |||||||||||||
Is the resistance greater than 200 Ohms?
|
|||||||||||||
| AB5 CHECK THE AIR CONDITIONING (A/C) COMPONENTS | |||||||||||||
Did the resistance rise above 200 Ohms?
|
|||||||||||||
| AB6 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | |||||||||||||
Is the concern still present?
|
PINPOINT TEST AC: REAR BLOWER MOTOR INOPERATIVE For circuit and connector information, refer to Wiring Diagrams Cell 52. Normal Operation and Fault SymptomsRear blower motor. REFER TO: Rear Climate Control System Operation and Component Description (412-02 Rear Climate Control, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
Visual Inspection and Pre-checks
|
||||||||||||||||
| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | ||||||||||||||||
| AC1 CHECK THE REAR BLOWER MOTOR OPERATION | ||||||||||||||||
Does the rear blower motor operate in all positions?
|
||||||||||||||||
| AC2 CHECK THE REAR BLOWER MOTOR SPEED CONTROLLER GROUND CIRCUIT | ||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||
| AC3 CHECK THE REAR BLOWER MOTOR SPEED CONTROL AND REAR BLOWER MOTOR VOLTAGE SUPPLY CIRCUITS FOR AN OPEN | ||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||
| AC4 CHECK THE REAR BLOWER MOTOR SPEED CONTROLLER FOR VOLTAGE SUPPLY | ||||||||||||||||
Is the voltage greater than 11 volts?
|
||||||||||||||||
| AC5 CHECK THE PWM (PULSE WIDTH MODULATION) CIRCUIT BETWEEN THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE AND THE REAR BLOWER MOTOR SPEED CONTROLLER FOR A SHORT TO VOLTAGE | ||||||||||||||||
Is there voltage present?
|
||||||||||||||||
| AC6 CHECK THE PWM (PULSE WIDTH MODULATION) CIRCUIT BETWEEN THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE AND THE REAR BLOWER MOTOR SPEED CONTROLLER FOR A SHORT TO GROUND | ||||||||||||||||
Is the resistance greater than 10000 Ohms?
|
||||||||||||||||
| AC7 CHECK THE PWM (PULSE WIDTH MODULATION) CIRCUIT BETWEEN THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE AND THE REAR BLOWER MOTOR SPEED CONTROLLER FOR AN OPEN | ||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||
| AC8 CHECK THE REAR BLOWER MOTOR OPERATION USING A TEST LAMP IN PLACE OF THE REAR BLOWER MOTOR | ||||||||||||||||
NOTICE: The following step of the precision test uses a test lamp to simulate normal circuit loads. Use only the Rotunda test lamp (SGT27000) or an equivalent 250-300 mA incandescent test lamp. To avoid damaging the connector terminals, use the Rotunda Flex Probe kit to connect the test lamp probe to the vehicle. Do not connect the test lamp probe directly to any connector.
Does the test lamp illuminate?
|
||||||||||||||||
| AC9 CHECK THE REAR BLOWER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE | ||||||||||||||||
Is there voltage present?
|
||||||||||||||||
| AC10 CHECK THE REAR BLOWER MOTOR ACTUATOR CIRCUITS FOR A SHORT TO GROUND | ||||||||||||||||
Is the resistance greater than 10000 ohms?
|
||||||||||||||||
| AC11 CHECK THE REAR BLOWER MOTOR GROUND CIRCUIT FOR AN OPEN | ||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||
| AC12 CHECK THE REAR BLOWER MOTOR SPEED CONTROLLER OPERATION | ||||||||||||||||
Is the concern still present?
|
||||||||||||||||
| AC13 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | ||||||||||||||||
Is the concern still present?
|
.jpg)
PINPOINT TEST AD: REAR BLOWER MOTOR OPERATES INCORRECTLY For circuit and connector information, refer to Wiring Diagrams Cell 52. Normal Operation and Fault SymptomsRear blower motor. REFER TO: Rear Climate Control System Operation and Component Description (412-02 Rear Climate Control, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
|
||||||||||||||||
| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | ||||||||||||||||
| AD1 CHECK THE REAR FAN MOTOR OPERATION | ||||||||||||||||
Does the rear blower motor operate in all positions?
|
||||||||||||||||
| AD2 CHECK THE REAR FAN MOTOR SPEED CONTROL CIRCUITS FOR A SHORT TO VOLTAGE | ||||||||||||||||
Is there voltage present?
|
||||||||||||||||
| AD3 CHECK THE REAR FAN MOTOR SPEED CONTROL CIRCUITS FOR A SHORT TO GROUND | ||||||||||||||||
Is the resistance greater than 10000 ohms?
|
||||||||||||||||
| AD4 CHECK THE REAR FAN MOTOR SPEED CONTROL OPERATION | ||||||||||||||||
Is the concern still present?
|
||||||||||||||||
| AD5 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | ||||||||||||||||
Is the concern still present?
|
PINPOINT TEST AE: INCORRECT OR MISDIRECTED AIRFLOW FROM OUTLETS ON RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) SYSTEM For circuit and connector information, refer to Wiring Diagrams Cell 52. Normal Operation and Fault SymptomsAir Handling, REFER TO: Rear Climate Control System Operation and Component Description (412-02 Rear Climate Control, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
|
|||||||||||||||||||||||||
| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | |||||||||||||||||||||||||
| AE1 CHECK THE REAR AIR DISTRIBUTION DOOR ACTUATOR CIRCUITS FOR A SHORT TO VOLTAGE | |||||||||||||||||||||||||
Is there voltage present?
|
|||||||||||||||||||||||||
| AE2 CHECK THE REAR AIR DISTRIBUTION DOOR ACTUATOR CIRCUITS FOR A SHORT TO GROUND | |||||||||||||||||||||||||
Is the resistance greater than 10000 ohms?
|
|||||||||||||||||||||||||
| AE3 CHECK THE AIR DISTRIBUTION DOOR ACTUATOR CIRCUITS FOR AN OPEN | |||||||||||||||||||||||||
Is the resistance less than 3 ohms?
|
|||||||||||||||||||||||||
| AE4 CHECK THE VOLTAGE IN THE REAR AIR DISTRIBUTION DOOR ACTUATOR POWER SUPPLY CIRCUITS | |||||||||||||||||||||||||
Is there voltage present?
|
|||||||||||||||||||||||||
| AE5 CHECK THE ACTUATOR OPERATION | |||||||||||||||||||||||||
Is the concern still present?
|
|||||||||||||||||||||||||
| AE6 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | |||||||||||||||||||||||||
Is the concern still present?
|
PINPOINT TEST AF: REAR TEMPERATURE DOOR INOPERATIVE OR OPERATES INCORRECTLY For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsAir Handling, REFER TO: Rear Climate Control System Operation and Component Description (412-02 Rear Climate Control, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
|
|||||||||||||||||||||||||
| NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector. | |||||||||||||||||||||||||
| AF1 CHECK THE REAR TEMPERATURE DOOR ACTUATOR CIRCUITS FOR A SHORT TO VOLTAGE | |||||||||||||||||||||||||
Is there voltage present?
|
|||||||||||||||||||||||||
| AF2 CHECK THE REAR TEMPERATURE DOOR ACTUATOR CIRCUITS FOR A SHORT TO GROUND | |||||||||||||||||||||||||
Is the resistance greater than 10000 ohms?
|
|||||||||||||||||||||||||
| AF3 CHECK THE REAR TEMPERATURE DOOR ACTUATOR CIRCUITS FOR AN OPEN | |||||||||||||||||||||||||
Is the resistance less than 3 ohms?
|
|||||||||||||||||||||||||
| AF4 CHECK THE VOLTAGE IN THE REAR TEMPERATURE DOOR ACTUATOR POWER SUPPLY CIRCUIT | |||||||||||||||||||||||||
Is there voltage present?
|
|||||||||||||||||||||||||
| AF5 CHECK THE ACTUATOR FOR CORRECT OPERATION | |||||||||||||||||||||||||
Is the concern still present?
|
|||||||||||||||||||||||||
| AF6 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | |||||||||||||||||||||||||
Is the concern still present?
|
PINPOINT TEST AG: AUTO START-STOP DEACTIVATION INDICATOR INOPERATIVE OR OPERATES INCORRECTLY For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsConsole Instrument Panel Switch Assembly - Auto Start-Stop Deactivation Switch. REFER TO: Climate Control System - System Operation and Component Description (412-00 Climate Control System - General Information, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
|
|||||||||||||
| NOTICE: Use the correct probe adapter(s) when making measurements. Using incorrect probe adapter(s) may damage the connector. | |||||||||||||
| AG1 CHECK THE AUTO START-STOP DEACTIVATION SWITCH INDICATOR AND LED CIRCUITS FOR A SHORT TO VOLTAGE | |||||||||||||
Is there voltage present?
|
|||||||||||||
| AG2 CHECK THE AUTO START-STOP DEACTIVATION SWITCH INDICATOR AND LED CIRCUITS FOR A SHORT TO GROUND | |||||||||||||
Is the resistance greater than 10000 ohms?
|
|||||||||||||
| AG3 CHECK THE AUTO START-STOP DEACTIVATION SWITCH INDICATOR AND LED CIRCUITS FOR AN OPEN | |||||||||||||
Is the resistance less than 3 ohms?
|
|||||||||||||
| AG4 CHECK THE AUTO START-STOP DEACTIVATION SWITCH INDICATOR AND LED CIRCUITS FOR A SHORT CIRCUIT | |||||||||||||
Is the resistance greater than 10000 Ohms?
|
|||||||||||||
| AG5 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | |||||||||||||
Is the concern still present?
|
PINPOINT TEST AH: B10B8:63 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsClimate control buttons held down for too long may cause this DTC to be set. DTC Fault Trigger Conditions
Possible Sources
|
|||||||||
| NOTICE: Use the correct probe adapter(s) when making measurements. Using incorrect probe adapter(s) may damage the connector. | |||||||||
| AH1 CLEAN HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE BUTTONS | |||||||||
Is the concern still present?
|
|||||||||
| AH2 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | |||||||||
Is the concern still present?
|
|||||||||
| AH3 CHECK THE RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION | |||||||||
Is the concern still present?
|
PINPOINT TEST AI: ACCM (AIR CONDITIONING CONTROL MODULE) A/C (AIR CONDITIONING) ELECTRIC COMPRESSOR INOPERATIVE For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsThe ACCM is an integral part of the electric air conditioning compressor and cannot be removed or serviced separately. The ACCM has both low-voltage and high-voltage electrical connections. The ACCM requires a low-voltage system operating voltage of 9 to 16 volts. The ACCM also requires a high-voltage system operating voltage of 100 to 467 volts. The ACCM has a single ground circuit located in the engine compartment wiring harness. Excessive resistance or an open in one or more of these circuits, a discharged battery or a faulty charging system will set a DTC in the ACCM. DTC Fault Trigger Conditions
Possible Sources
|
||||||||||||||||||||||||||||||||||||||||||||||||
| AI1 DCDC (DC/DC CONVERTER CONTROL MODULE) SELF-TEST | ||||||||||||||||||||||||||||||||||||||||||||||||
Are there any DCDC Diagnostic Trouble Codes (DTCs) present?
|
||||||||||||||||||||||||||||||||||||||||||||||||
| AI2 PERFORM BECM (BATTERY ENERGY CONTROL MODULE) SELF-TEST | ||||||||||||||||||||||||||||||||||||||||||||||||
Are there any BECM Diagnostic Trouble Codes (DTCs) present?
|
||||||||||||||||||||||||||||||||||||||||||||||||
| AI3 RECHECK ACCM (AIR CONDITIONING CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS) | ||||||||||||||||||||||||||||||||||||||||||||||||
Does DTC P0562:00, P0563:00, P0AFA:16, P0AFB:17, P0AFB:1C, B11EE:19, B11EE:4B or B11EE:92 return?
|
||||||||||||||||||||||||||||||||||||||||||||||||
| AI4 CHECK ACCM (AIR CONDITIONING CONTROL MODULE) MAIN ECU POWER SUPPLY VOLTAGE PID (PARAMETER IDENTIFICATION) | ||||||||||||||||||||||||||||||||||||||||||||||||
Is the PID voltage between 9 volts and 16 volts?
|
||||||||||||||||||||||||||||||||||||||||||||||||
| AI5 CHECK ACCM (AIR CONDITIONING CONTROL MODULE) LOW-VOLTAGE POWER CIRCUIT | ||||||||||||||||||||||||||||||||||||||||||||||||
NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector.
Is the voltage greater than 11 volts?
|
||||||||||||||||||||||||||||||||||||||||||||||||
| AI6 CHECK ACCM (AIR CONDITIONING CONTROL MODULE) GROUND CIRCUIT | ||||||||||||||||||||||||||||||||||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||||||||||||||||||||||||||||||||||
| AI7 CHECK ACCM (AIR CONDITIONING CONTROL MODULE) A/C ELECTRIC COMPRESSOR HIGH-VOLTAGE POWER SUPPLY (PARAMETER IDENTIFICATION) | ||||||||||||||||||||||||||||||||||||||||||||||||
Is the PID voltage in the range of 100 to 467 volts?
|
||||||||||||||||||||||||||||||||||||||||||||||||
| AI8 CHECK ACCM (AIR CONDITIONING CONTROL MODULE) A/C ELECTRIC COMPRESSOR HIGH-VOLTAGE CABLES FOR AN OPEN | ||||||||||||||||||||||||||||||||||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||||||||||||||||||||||||||||||||||
| AI9 CHECK HIGH-VOLTAGE LOW-AMPERAGE FUSE | ||||||||||||||||||||||||||||||||||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||||||||||||||||||||||||||||||||||
| AI10 CHECK ACCM (AIR CONDITIONING CONTROL MODULE) OPERATION | ||||||||||||||||||||||||||||||||||||||||||||||||
Is the concern still present?
|
.jpg)
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PINPOINT TEST AJ: CHECK CABIN HEATER COOLANT HEATER OPERATION P01EB:96, P2DA4:00, P2DA5:00, P2DA6:00, P2DA7:00, U069E:81, U069E:87 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsCabin Coolant Heater. SEE: Auxiliary Climate Control - System Operation and Component Description (412-03 Auxiliary Climate Control, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
Visual Inspection and Pre-checks
|
||||||||||||||||||||||||
.jpg) WARNING: To avoid the risk of electrical shock, always strictly observe all warnings and service instructions, including instructions to de-energize the system. The high-voltage system operates at approximately 300 volts DC, supplied through high-voltage cables to its components and modules. High-voltage cables and wiring are identified by orange wire harness tape or orange wire insulation. All high-voltage components are marked with high-voltage warning labels bearing the high-voltage symbol. Failure to follow these instructions may result in serious personal injury or death. |
||||||||||||||||||||||||
| NOTE: Before performing this pinpoint test, make sure the battery is charged to at least 50%. For charging information, refer to Section 414-03. | ||||||||||||||||||||||||
| AJ1 CHECK CABIN COOLANT HEATER USING PARAMETER IDENTIFICATION (PID) | ||||||||||||||||||||||||
NOTICE: Operating the cabin coolant heater without the cabin coolant heater pump operating may damage the cabin coolant heater.
Are the heater core hoses heated?
|
||||||||||||||||||||||||
| AJ2 CHECK ACCM (AIR CONDITIONING CONTROL MODULE) HIGH-VOLTAGE PID (PARAMETER IDENTIFICATION) | ||||||||||||||||||||||||
Is the PID voltage in the range of 100 to 467 volts?
|
||||||||||||||||||||||||
| AJ3 CHECK FOR PARTIALLY CONNECTED HIGH-VOLTAGE CONNECTORS | ||||||||||||||||||||||||
Is any connector not fully seated?
|
||||||||||||||||||||||||
| AJ4 CHECK THE CABIN COOLANT HEATER HIGH-VOLTAGE CABLES FOR AN OPEN CIRCUIT | ||||||||||||||||||||||||
NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector.
Is the resistance less than 3 ohms?
|
||||||||||||||||||||||||
| AJ5 CHECK THE CABIN COOLANT HEATER HIGH-VOLTAGE LOW-AMPERAGE FUSE | ||||||||||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||||||||||
| AJ6 CHECK THE CABIN COOLANT HEATER LOW-VOLTAGE CIRCUITS FOR VOLTAGE | ||||||||||||||||||||||||
Is voltage present?
|
||||||||||||||||||||||||
| AJ7 CHECK THE CABIN COOLANT HEATER LOW-VOLTAGE CIRCUITS FOR A SHORT TO GROUND | ||||||||||||||||||||||||
Is the resistance greater than 10000 ohms?
|
||||||||||||||||||||||||
| AJ8 CHECK THE CABIN COOLANT HEATER LOW-VOLTAGE CIRCUITS FOR AN OPEN CIRCUIT | ||||||||||||||||||||||||
Is the resistance less than 3 ohms?
|
||||||||||||||||||||||||
| AJ9 CHECK THE CABIN COOLANT HEATER LOW-VOLTAGE CIRCUITS FOR A SHORT CIRCUIT | ||||||||||||||||||||||||
Is the resistance greater than 10000 ohms?
|
||||||||||||||||||||||||
| AJ10 CHECK THE COOLANT HOSE GASKET | ||||||||||||||||||||||||
Are the coolant hoses routed correctly?
|
||||||||||||||||||||||||
| AJ11 CHECK THE ENGINE COOLANT LEVEL | ||||||||||||||||||||||||
Is the engine coolant level within specification?
|
||||||||||||||||||||||||
| AJ12 CLEAR ALL SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC MODULE C) DIAGNOSTIC TROUBLE CODES | ||||||||||||||||||||||||
Are the heater core hoses heated?
|
PINPOINT TEST AK: U0100:00 Normal Operation and Fault SymptomsThe ACCM and HVAC control module communicate with the PCM over the CAN bus. If messages are missing or not received from the PCM, functions such as air conditioning may be inoperative or may operate incorrectly, or the outside air temperature may be reported incorrectly. DTC Fault Trigger Conditions
Possible Sources
|
|||||||||
| AK1 CONFIRM THE CONCERN | |||||||||
Is the observed symptom present?
|
|||||||||
| AK2 CHECK THAT THE DIAGNOSTIC SCAN TOOL COMMUNICATES WITH THE PCM (POWERTRAIN CONTROL MODULE) | |||||||||
Can a vehicle communication session be established?
|
|||||||||
| AK3 CHECK FOR NON-NETWORK DIAGNOSTIC TROUBLE CODES (DTCS) | |||||||||
Are there any non-network diagnostic trouble codes (DTCs)?
|
|||||||||
| AK4 CHECK THE PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS) | |||||||||
Are there any non-network diagnostic trouble codes (DTCs)?
|
|||||||||
| AK5 RECHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0100:00 | |||||||||
Is DTC U0100:00 still present?
|
|||||||||
| AK6 CHECK FOR OTHER CAUSES OF NETWORK COMMUNICATION PROBLEMS | |||||||||
Is the observed symptom still present?
|
|||||||||
| AK7 CHECK THE PCM (POWERTRAIN CONTROL MODULE) FOR PROPER OPERATION | |||||||||
Is the concern still present?
|
PINPOINT TEST AL: U0111:00 Normal Operation and Fault SymptomsThe ACCM communicates with the BECM over the CAN bus. If messages are missing or not received from the BECM, the A/C may be inoperative. DTC Fault Trigger Conditions
Possible Sources
|
||||||
| AL1 CONFIRM THE CONCERN | ||||||
Is the observed symptom present?
|
||||||
| AL2 CHECK THE NETWORK COMMUNICATION | ||||||
Does the BECM pass the network test?
|
||||||
| AL3 CHECK FOR NON-NETWORK DIAGNOSTIC TROUBLE CODES (DTCS) | ||||||
Are there any non-network diagnostic trouble codes (DTCs)?
|
||||||
| AL4 CHECK THE BECM (BATTERY ENERGY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS) | ||||||
Are there any non-network diagnostic trouble codes (DTCs)?
|
||||||
| AL5 RECHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0111:00 | ||||||
Is DTC U0111:00 still present?
|
||||||
| AL6 CHECK FOR OTHER CAUSES OF NETWORK COMMUNICATION PROBLEMS | ||||||
Is the observed symptom still present?
|
||||||
| AL7 BECM (BATTERY ENERGY CONTROL MODULE) CHECK FOR PROPER OPERATION | ||||||
Is the concern still present?
|
PINPOINT TEST: U3003:16 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsModules monitor the supply voltage and set a DTC if it falls below a threshold value. DTC Fault Trigger Conditions
Possible Sources
|
||||||||||||||||
| AM1 RECHECK FOR LOW VOLTAGE DIAGNOSTIC TROUBLE CODES (DTCS) | ||||||||||||||||
IS DTC U3003:16 STILL PRESENT?
|
||||||||||||||||
| AM2 CHECK CHARGING SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS) | ||||||||||||||||
Are any voltage-related diagnostic trouble codes (DTCs) present?
|
||||||||||||||||
| AM3 CHECK BATTERY CONDITION AND CHARGE | ||||||||||||||||
Is the battery in good condition and fully charged?
|
||||||||||||||||
| AM4 COMPARE SUSPECT MODULE VOLTAGE PID (PARAMETER IDENTIFICATION) TO BATTERY VOLTAGE | ||||||||||||||||
Is the voltage reading within 0.2 V of the recorded battery voltage?
|
||||||||||||||||
| AM5 CHECK THE MODULE VOLTAGE SUPPLY CIRCUIT FOR HIGH RESISTANCE | ||||||||||||||||
NOTICE: Use the correct probe adapter(s) when taking measurements. Using incorrect probe adapter(s) may cause damage to the connector.
Is the voltage reading within 0.2 V of the recorded battery voltage?
|
||||||||||||||||
| AM6 CHECK THE SUSPECT MODULE GROUND CIRCUIT FOR HIGH RESISTANCE | ||||||||||||||||
Is the voltage reading within 0.2 V of the recorded battery voltage?
|
||||||||||||||||
| AM7 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE PROPER OPERATION | ||||||||||||||||
Is the concern still present?
|
||||||||||||||||
| AM8 CHECK RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE PROPER OPERATION | ||||||||||||||||
Is the concern still present?
|
PINPOINT TEST: U3003:17 Normal Operation and Fault SymptomsModules monitor the supply voltage and set a diagnostic trouble code if it exceeds the threshold value. DTC Fault Trigger Conditions
Possible Sources
|
|||||||||
| NOTE: Diagnostic Trouble Code (DTC) U3003:17 may be stored in module memory due to a previous battery charging or jump-start event. | |||||||||
| AN1 CHECK FOR HIGH VOLTAGE DIAGNOSTIC TROUBLE CODES (DTCS) SET IN OTHER MODULES | |||||||||
Is there a charging or overvoltage-related condition? Are diagnostic trouble codes (DTCs) present in multiple modules?
|
|||||||||
| AN2 CHECK BATTERY VOLTAGE WITH THE ENGINE RUNNING | |||||||||
Does the battery voltage rise to 15.5 volts or higher?
|
|||||||||
| AN3 RECHECK FOR HIGH VOLTAGE DTC (DIAGNOSTIC TROUBLE CODE) | |||||||||
IS DTC U3003:17 STILL PRESENT?
|
|||||||||
| AN4 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE PROPER OPERATION | |||||||||
Is the concern still present?
|
|||||||||
| AN5 CHECK RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE PROPER OPERATION | |||||||||
Is the concern still present?
|
PINPOINT TEST AO: BUS OFF For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. DTC Fault Trigger Conditions
Possible Sources
|
||||||
| AO1 INTERMITTENT FAULT DIAGNOSIS | ||||||
Is the diagnostic trouble code still present?
|
PINPOINT TEST AP: INVALID DATA RECEIVED DTC Fault Trigger Conditions
Possible Sources
|
|||||||||||||||||||||
| AP1 CHECK DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE MODULE SENDING INVALID DATA | |||||||||||||||||||||
Are any diagnostic trouble codes (DTCs) present from the module sending invalid data?
|
PINPOINT TEST AQ: MODULE CONFIGURATION ERROR DTC Fault Trigger Conditions
Possible Sources
|
|||||||||
| AQ1 PERFORM PMI (PROGRAMMABLE MODULE INSTALLATION) FOR THE SUSPECT MODULE | |||||||||
Is the original diagnostic trouble code present?
|
PINPOINT TEST AR: INTERNAL MODULE FAILURE DTC Fault Trigger Conditions
Possible Sources
|
|||||||||||||||||||||||||||
| AR1 INSTALL A NEW SUSPECT MODULE | |||||||||||||||||||||||||||
Is the concern still present?
|
PINPOINT TEST AS: P2611:00, P2612:00, P2613:00 REFRIGERANT BATTERY SHUTOFF VALVE For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsBattery Cooler Shut-Off Valve. REFER TO: Auxiliary Climate Control - System Operation and Component Description (412-03 Auxiliary Climate Control, Description and Operation). To confirm the repair, use the diagnostic scan tool to clear all Diagnostic Trouble Codes (DTCs) and perform the SOBDMC self-test. The SOBDMC self-test commands the climate control valve to operate. DTC Fault Trigger Conditions
Possible Sources
|
|||||||||||||||||||||
| NOTICE: Use the correct probe adapter(s) when making measurements. Using incorrect probe adapter(s) may damage the connector. | |||||||||||||||||||||
| AS1 CHECK BATTERY COOLER SHUT-OFF VALVE CIRCUIT FOR SHORT TO VOLTAGE | |||||||||||||||||||||
Is there voltage present?
|
|||||||||||||||||||||
| AS2 CHECK THE REFRIGERANT SHUTOFF VALVE HIGH-VOLTAGE BATTERY CIRCUITS FOR A SHORT TO GROUND | |||||||||||||||||||||
Is the resistance greater than 10000 Ohms?
|
|||||||||||||||||||||
| AS3 CHECK THE REFRIGERANT SHUTOFF VALVE HIGH-VOLTAGE BATTERY CIRCUITS FOR AN OPEN | |||||||||||||||||||||
Is the resistance less than 3 ohms?
|
|||||||||||||||||||||
| AS4 CHECK THE REFRIGERANT SHUTOFF VALVE HIGH-VOLTAGE BATTERY CIRCUITS FOR A SHORT CIRCUIT | |||||||||||||||||||||
Is the resistance greater than 10000 Ohms?
|
|||||||||||||||||||||
| AS5 CHECK THE BCMC (BODY CONTROL MODULE C) FOR PROPER OPERATION | |||||||||||||||||||||
Is the concern still present?
|
PINPOINT TEST AT: P2E62:00, P2E63:00, P2E64:00 REAR HEATER CORE SHUTOFF VALVE For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsRear Heater Core Shutoff Valve REFER TO: Supplemental Climate Control - System Operation and Component Description (412-03 Supplemental Climate Control, Description and Operation). To confirm the repair, use the diagnostic scan tool to clear all Diagnostic Trouble Codes (DTCs) and perform the SOBDMC self-test. The SOBDMC self-test commands the climate control valve to operate. DTC Fault Trigger Conditions
Possible Sources
|
|||||||||||||||||||||
| NOTICE: Use the correct probe adapter(s) when making measurements. Using incorrect probe adapter(s) may damage the connector. | |||||||||||||||||||||
| AT1 CHECK THE REAR HEATER CORE SHUTOFF VALVE CIRCUITS FOR A SHORT TO VOLTAGE | |||||||||||||||||||||
Is there voltage present?
|
|||||||||||||||||||||
| AT2 CHECK THE REAR HEATER SHUTOFF VALVE CIRCUITS FOR A SHORT TO GROUND | |||||||||||||||||||||
Is the resistance greater than 10000 Ohms?
|
|||||||||||||||||||||
| AT3 CHECK THE REAR HEATER CORE SHUTOFF VALVE CIRCUITS FOR AN OPEN | |||||||||||||||||||||
Is the resistance less than 3 ohms?
|
|||||||||||||||||||||
| AT4 CHECK THE REAR HEATER CORE SHUTOFF VALVE CIRCUITS FOR A SHORT CIRCUIT | |||||||||||||||||||||
Is the resistance greater than 10000 Ohms?
|
|||||||||||||||||||||
| AT5 CHECK THE BCMC (BODY CONTROL MODULE C) FOR PROPER OPERATION | |||||||||||||||||||||
Is the concern still present?
|
PINPOINT TEST AU: B3A01:00, B3A02:00, B3A03:00 REAR EVAPORATOR SHUTOFF VALVE For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsRear Evaporator Shutoff Valve REFER TO: Supplemental Climate Control - System Operation and Component Description (412-03 Supplemental Climate Control, Description and Operation). To confirm the repair, use the diagnostic scan tool to clear all Diagnostic Trouble Codes (DTCs) and perform the SOBDMC self-test. The SOBDMC self-test commands the climate control valve to operate. DTC Fault Trigger Conditions
Possible Sources
|
|||||||||||||
| NOTICE: Use the correct probe adapter(s) when making measurements. Using incorrect probe adapter(s) may damage the connector. | |||||||||||||
| AU1 CHECK THE REAR EVAPORATOR SHUTOFF VALVE CIRCUITS FOR A SHORT TO VOLTAGE | |||||||||||||
Is there voltage present?
|
|||||||||||||
| AU2 CHECK THE REAR EVAPORATOR SHUTOFF VALVE CIRCUITS FOR A SHORT TO GROUND | |||||||||||||
Is the resistance greater than 10000 Ohms?
|
|||||||||||||
| AU3 CHECK THE REAR EVAPORATOR SHUTOFF VALVE CIRCUITS FOR AN OPEN | |||||||||||||
Is the resistance less than 3 ohms?
|
|||||||||||||
| AU4 CHECK THE REAR EVAPORATOR SHUTOFF VALVE CIRCUITS FOR A SHORT CIRCUIT | |||||||||||||
Is the resistance greater than 10000 Ohms?
|
|||||||||||||
| AU5 CHECK THE BCMC (BODY CONTROL MODULE C) FOR PROPER OPERATION | |||||||||||||
Is the concern still present?
|
PINPOINT TEST AV: P2183, P2184, P2185, P2186 For wiring diagrams and connector information, refer to Wiring Diagrams Cell 55. Normal Operation and Fault SymptomsPassenger Compartment Heater Coolant Temperature Sensor (also known as the ECT 2 Sensor). REFER TO: Supplemental Climate Control - System Operation and Component Description (412-03 Supplemental Climate Control, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
|
||||||||||||||||||||||||||||||||||||||||||
| WARNING: To avoid the risk of electrical shock, always strictly observe all warnings and service instructions, including instructions to de-energize the system. The high-voltage system operates at approximately 300 volts DC, supplied through high-voltage cables to its components and modules. High-voltage cables and wiring are identified by orange wire harness tape or orange wire insulation. All high-voltage components are marked with high-voltage warning labels bearing the high-voltage symbol. Failure to follow these instructions may result in serious personal injury or death. |
||||||||||||||||||||||||||||||||||||||||||
| NOTICE: Use the correct probe adapter(s) when making measurements. Using incorrect probe adapter(s) may damage the connector. | ||||||||||||||||||||||||||||||||||||||||||
| NOTE: Before performing this pinpoint test, make sure the battery is charged to at least 50%. For charging information, refer to Section 414-03. | ||||||||||||||||||||||||||||||||||||||||||
| AV1 CHECK THE COOLANT HOSE ROUTING | ||||||||||||||||||||||||||||||||||||||||||
Are the coolant hoses routed correctly?
|
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| AV2 CHECK THE ECT (ENGINE COOLANT TEMPERATURE) SENSOR 2 CIRCUIT FOR A SHORT TO VOLTAGE | ||||||||||||||||||||||||||||||||||||||||||
Is voltage present?
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| AV3 CHECK THE ECT (ENGINE COOLANT TEMPERATURE) SENSOR 2 CIRCUIT FOR A SHORT TO GROUND | ||||||||||||||||||||||||||||||||||||||||||
Is the resistance greater than 10000 ohms?
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| AV4 CHECK THE ECT (ENGINE COOLANT TEMPERATURE) SENSOR 2 CIRCUIT FOR AN OPEN | ||||||||||||||||||||||||||||||||||||||||||
Is the resistance less than 3 ohms?
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| AV5 CHECK THE ECT (ENGINE COOLANT TEMPERATURE) SENSOR 2 CIRCUIT FOR A SHORT TO GROUND | ||||||||||||||||||||||||||||||||||||||||||
Is the resistance greater than 10000 Ohms?
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| AV6 CHECK THE ECT (ENGINE COOLANT TEMPERATURE) SENSOR 2 RESISTANCE | ||||||||||||||||||||||||||||||||||||||||||
Is the resistance within the specified temperature values?
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| AV7 CHECK THE POWERTRAIN CONTROL MODULE (PCM) FOR PROPER OPERATION | ||||||||||||||||||||||||||||||||||||||||||
Is the concern still present?
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C1064 pin 1, component side PINPOINT TEST AW: A/C (AIR CONDITIONING) COMPRESSOR RELIEF VALVE DISCHARGE Normal Operation and Fault SymptomsThe A/C pressure relief valve normal opening pressure is 3447-4137 kPa (500-600 psi). Possible Sources
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| AW1 CHECK THE AIR CONDITIONING (A/C) COMPRESSOR PRESSURE RELIEF VALVE | ||||
Is the high side system pressure above the A/C pressure relief valve opening pressure [3447-4137 kPa (500-600 psi)]?
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PINPOINT TEST AX: P26BE, P26BF CABIN HEATER COOLANT BYPASS VALVE For circuit and connector information, REFER TO Wiring Diagrams Cell 23. Normal Operation and Fault SymptomsCabin heater coolant bypass valve. REFER to: Auxiliary Climate Control - System Operation and Component Description (412-03 Auxiliary Climate Control, Description and Operation). DTC Fault Trigger Conditions
Possible Sources
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| NOTICE: Use the correct probe adapter(s) when making measurements. Using incorrect probe adapter(s) may damage the connector. | ||||||||||||||||
| AX1 CHECK THE CABIN HEATER COOLANT BYPASS VALVE CIRCUIT FOR A SHORT TO VOLTAGE | ||||||||||||||||
Is there voltage present?
|
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| AX2 CHECK THE CABIN HEATER COOLANT BYPASS VALVE CIRCUIT FOR A SHORT TO GROUND | ||||||||||||||||
Is the resistance greater than 10000 Ohms?
|
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| AX3 CHECK THE CABIN HEATER COOLANT BYPASS VALVE CIRCUIT FOR AN OPEN | ||||||||||||||||
Is the resistance less than 3 ohms?
|
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| AX4 CHECK THE POWERTRAIN CONTROL MODULE (PCM) FOR PROPER OPERATION | ||||||||||||||||
Is the concern still present?
|
PINPOINT TEST AY: INSUFFICIENT A/C (AIR CONDITIONING) COOLING Possible Sources
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| AY1 CHECK THE AIR CONDITIONING SYSTEM FOR PROPER REFRIGERANT CHARGE | ||||
Has the refrigerant system test been completed?
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PINPOINT TEST AZ: REDUCED OUTLET AIRFLOW Possible Sources
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| NOTE: Before performing the following test, diagnose all Heating, Ventilation and Air Conditioning (HVAC) module and Powertrain Control Module (PCM) Diagnostic Trouble Codes (DTCs). | ||||
| AZ1 CHECK THE CABIN AIR FILTER | ||||
Is the cabin air filter not clogged?
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| AZ2 CHECK THE BLOWER MOTOR OPERATION | ||||
Does the blower motor operate normally?
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| AZ3 CHECK THE AIR CONDITIONING SYSTEM FOR PROPER REFRIGERANT CHARGE | ||||
Has the refrigerant system test been completed?
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PINPOINT TEST BA: A/C (AIR CONDITIONING) SYSTEM NVH (NOISE, VIBRATION AND HARSHNESS)
Normal Operation and Fault SymptomsCHECK the air conditioning system for leaks. REFER to the appropriate General Procedures in Group 412-00. Some noises are normal during air conditioning system operation. If the refrigerant charge is within specification, compare with a similar vehicle. Possible Sources
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| No diagnostic actions are available for this symptom or DTC. Refer to: Diagnostic Methods (100-00 General Information, Description and Operation). |
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