Ford Explorer Quiz
Powertrain

Diagnosis and Testing - Electronic Engine Controls

In this manual: Powertrain
General Information — 41Chassis — 173Powertrain — 250Electrical — 303Body and Paint — 331
~53min read

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
PCM P025A:00 Fuel Pump Module Control Circuit "A" Open: no subtype information GO to Pinpoint Test L
PCM P025B:00 Fuel Pump Module Control Circuit "A" Range/Performance: no subtype information GO to Pinpoint Test L
PCM P025C:00 Fuel Pump Module Control Circuit "A" Low: no subtype information GO to Pinpoint Test L
PCM P025D:00 Fuel Pump Module Control Circuit "A" High: no subtype information GO to Pinpoint Test L
PCM P027B:00 Fuel Pump Module Control Circuit "B" Range/Performance: no subtype information GO to Pinpoint Test L
PCM P0521:00 Engine Oil Pressure Sensor/Switch Circuit "A" Range/Performance: no subtype information GO to Pinpoint Test M
PCM P0524:00 Engine Oil Pressure Low GO to Pinpoint Test M
PCM P06DA:00 Engine Oil Pressure Control Circuit Short/Open: no subtype information GO to Pinpoint Test N
PCM P06DB:00 Engine Oil Pressure Control Circuit Low: no subtype information GO to Pinpoint Test N
PCM P06DC:00 Engine Oil Pressure Control Circuit High: no subtype information GO to Pinpoint Test N
PCM P06DD:00 Engine Oil Pressure Control Circuit Performance / Stuck Off: no subtype information GO to Pinpoint Test M
PCM P06DE:00 Engine Oil Pressure Control Circuit Stuck On: no subtype information GO to Pinpoint Test M
PCM P06E9:00 Engine Starter Motor Performance: No Sub-type Information GO TO Pinpoint Test O
PCM P1001:00 KOER Cannot Complete, KOER Aborted: No Sub Type Information GO to Pinpoint Test P
PCM P166A:00 Restraint Deployment Communication Circuit: No Sub Type Information GO to Pinpoint Test Q
PCM U0103:00 Lost Communication with Gear Shift Control Module A: No Sub Type Information GO to Pinpoint Test A
PCM U0121:00 Communication Lost with Anti-Lock Brake System (ABS) Control Module "A": no subtype information GO to Pinpoint Test B
PCM U0122:00 Lost communication with vehicle dynamics control module: no sub-type information GO to Pinpoint Test C
PCM U0126:00 Lost Communication with Steering Wheel Angle Sensor Module: No Sub Type Information GO to Pinpoint Test D
PCM U0151:00 Lost Communication with Restraints Control Module: No Sub Type Information GO to Pinpoint Test E
PCM U0164:00 Lost Communication with HVAC Control Module: No Sub Type Information GO to Pinpoint Test F
PCM U0212:00 Lost Communication with Steering Column Control Module: No Sub Type Information GO to Pinpoint Test D
PCM U0230:00 Lost Communication with Liftgate Module: No Sub Type Information GO to Pinpoint Test G
PCM U023A:00 Lost Communication with Image Processing Module A: No Sub Type Information GO to Pinpoint Test H
PCM U0252:00 Rear Lighting Control Module "B" Communication Lost: No Sub-Type Information GO to Pinpoint Test I
PCM U0253:00 Lost Communication with Auxiliary Protocol Interface Module: No Sub Type Information GO to Pinpoint Test J
PCM U0404:00 Incorrect Data Received from Gear Shift Control Module A: No Sub Type Information GO to Pinpoint Test K
PCM U0405:00 Invalid Data Received from Cruise Control Module: No Sub Type Information GO to Pinpoint Test K
PCM U0416:00 Invalid Data Received from Vehicle Dynamics Module: no subtype information GO to Pinpoint Test K
PCM U101E:00 Invalid Internal Monitoring Data Received from Gear Shift Module: no subtype information GO to Pinpoint Test K
PCM U101F:00 Incorrect Monitoring of Internal Control Module Data Received from Transmission Range Module: No Sub-Type Information GO to Pinpoint Test K
PCM U102F:00 Invalid Internal Monitoring Data Received from Transfer Case Control Module: no subtype information GO to Pinpoint Test K

Pinpoint Tests

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).


PINPOINT TEST A: U0103

Normal Operation and Fault Symptoms

Refer to: Communication Network - System Operation and Component Description (418-00 Module Communication Network, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
PCM U0103:00 Lost Communication with Gear Shift Control Module A: No Sub Type Information The PCM sets this DTC if data messages from the GSM via the GWM are not present.

Possible Sources

  • Communication network concern
  • GSM
  • GWM
  • PCM
A1 CONFIRM THE CUSTOMER CONCERN
  • The ignition is on.
  • Make sure the observed symptom is present.

Is the observed symptom present?
Yes GO to A2
No The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent condition.
A2 CHECK THE COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Did the GSM pass the network test?
Yes GO to A3
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
A3 PERFORM GSM (GEAR SHIFT MODULE) CONTROL MODULE SELF-TEST
  • Using the diagnostic scan tool, perform the GSM control module self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
Refer to: External Controls (307-05A Automatic Transmission External Controls - 10-Speed Automatic Transmission - 10R60, Diagnosis and Testing).
No GO to A4
A4 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, retrieve the GWM diagnostic trouble codes (DTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
No GO to A5
A5 PERFORM PCM (POWERTRAIN CONTROL MODULE) SELF-TEST
  • Using the diagnostic scan tool, perform a PCM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?
Yes Refer to the PCM DTC Chart in this section.
No GO to A6
A6 RECHECK THE PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
  • Wait 10 seconds.
  • Repeat the PCM self-test.

Is DTC U0103 still present?
Yes GO to A7
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
A7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK PROBLEMS
  • CHECK the vehicle service history for recent service actions related to the GSM, GWM or PCM. If recent service history is found:
    • make sure the correct replacement module was installed
      • HVBOM can be used to verify the correct part installation.
    • make sure the replacement module configuration was correct
      • reconfigure the module using the original data if the previous configuration is suspected
    • make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
      • Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  • Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?
Yes GO to A8
No The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.
A8 CHECK THE GSM (GEAR SHIFT MODULE) MODULE FOR PROPER OPERATION
  • Ignition OFF.
  • Disconnect and inspect the GSM connector(s).
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the GSM connector(s). Make sure it is properly seated and latched.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this condition, STOP this test and FOLLOW the service article instructions. If no service article exists for this condition, INSTALL a new GSM.
Refer to: Gear Shift Module (GSM) (307-05A Automatic Transmission External Controls - 10-Speed Automatic Transmission - 10R60, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
DIAGNOSTIC TEST B: U0121

Normal Operation and Fault Symptoms

Refer to: Communication Network - System Operation and Component Description (418-00 Module Communication Network, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
DTC U0121:00 Communication Lost with Anti-Lock Brake System (ABS) Control Module "A": no subtype information The PCM sets this DTC if data messages from the ABS module through the GWM are not present.

Possible Sources

  • Communication network concern
  • ABS Module
  • GWM
  • PCM
B1 CONFIRM THE CUSTOMER CONCERN
  • The ignition is on.
  • Make sure the observed symptom is present.

Is the observed symptom present?
Yes GO to B2
No The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent condition.
B2 CHECK THE COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Did the ABS module pass the network test?
Yes GO to B3
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
B3 PERFORM ABS (ANTI-LOCK BRAKE SYSTEM) MODULE SELF-TEST
  • Using the diagnostic scan tool, perform the ABS control module self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER TO: Anti-Lock Brake System (ABS) and Stability Control System (206-09 Anti-Lock Brake System (ABS) and Stability Control System, Diagnosis and Testing).
No GO to B4
B4 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, retrieve the GWM diagnostic trouble codes (DTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
No GO to B5
B5 PERFORM PCM (POWERTRAIN CONTROL MODULE) SELF-TEST
  • Using the diagnostic scan tool, perform a PCM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?
Yes Refer to the PCM DTC Chart in this section.
No GO to B6
B6 RECHECK THE PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
  • Wait 10 seconds.
  • Repeat the PCM self-test.

Is DTC U0121 still present?
Yes GO to B7
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
B7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK PROBLEMS
  • CHECK the vehicle service history for recent service actions related to the ABS, GWM or PCM. If recent service history is found:
    • make sure the correct replacement module was installed
      • HVBOM can be used to verify the correct part installation.
    • make sure the replacement module configuration was correct
      • reconfigure the module using the original data if the previous configuration is suspected
    • make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
      • Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  • Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?
Yes GO to B8
No The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.
B8 CHECK THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE OPERATION
  • Ignition OFF.
  • Disconnect and inspect the ABS control module connector.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Connect the ABS control module connector. Make sure that it is installed and locked correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this condition, STOP this test and FOLLOW the service article instructions. If no service article exists for this condition, INSTALL a new ABS module.
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
DIAGNOSTIC TEST C: U0122:

Normal Operation and Fault Symptoms

Refer to: Communication Network - System Operation and Component Description (418-00 Module Communication Network, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
PCM U0122:00 Lost communication with vehicle dynamics control module: no sub-type information The PCM sets this DTC when data messages from the VDM through the GWM are not present.

Possible Sources

  • Communication network concern
  • VDM
  • GWM
  • PCM
C1 CHECK THE CUSTOMER CONCERN
  • The ignition is on.
  • Make sure the observed symptom is present.

Is the observed symptom present?
Yes GO to C2
No The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent condition.
C2 CHECK THE COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Did the VDM pass the network test?
Yes GO to C3
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
C3 PERFORM VDM (VEHICLE DYNAMICS MODULE) MODULE SELF-TEST
  • Using the diagnostic scan tool, perform the VDM module self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
No GO TO C4
C4 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, retrieve any BCM diagnostic trouble codes (DTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
No GO to C5
C5 PERFORM PCM (POWERTRAIN CONTROL MODULE) SELF-TEST
  • Using the diagnostic scan tool, perform a PCM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?
Yes Refer to the PCM DTC Chart in this section.
No GO to C6
C6 RECHECK THE PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
  • Wait 10 seconds.
  • Repeat the PCM self-test.

Is DTC U0122 still present?
Yes GO TO C7
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
C7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK PROBLEMS
  • CHECK the vehicle service history for recent service actions related to the VDM, GWM or PCM. If recent service history is found:
    • make sure the correct replacement module was installed
      • HVBOM can be used to verify the correct part installation.
    • make sure the replacement module configuration was correct
      • reconfigure the module using the original data if the previous configuration is suspected
    • make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
      • Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  • Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?
Yes GO TO C8
No The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.
C8 CHECK VDM (VEHICLE DYNAMICS MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the VDM connector(s).
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the VDM connector(s). Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this condition, STOP this test and FOLLOW the service article instructions. If no service article exists for this condition, INSTALL a new
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
DIAGNOSTIC TEST D: U0126, U0212

Normal Operation and Fault Symptoms

Refer to: Communication Network - System Operation and Component Description (418-00 Module Communication Network, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
DTC U0126:00 Lost Communication with Steering Wheel Angle Sensor Module: No Sub Type Information The PCM sets this DTC if data messages from the SCCM through the GWM are not present.
DTC U0212:00 Lost Communication with Steering Column Control Module: No Sub Type Information The PCM sets this DTC if data messages from the SCCM through the GWM are not present.

Possible Sources

  • Communication network concern
  • SCCM
  • GWM
  • PCM
D1 VERIFY CUSTOMER CONCERN
  • The ignition is on.
  • Make sure the observed symptom is present.

Is the observed symptom present?
Yes GO to D2
No The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent condition.
D2 CHECK THE COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Did the SCCM module pass the network test?
Yes GO to D3
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
D3 PERFORM SCCM (STEERING COLUMN CONTROL MODULE) SELF-TEST
  • Using the diagnostic scan tool, perform the SCCM self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
Refer to: Steering Wheel and Column Electrical Components (211-05 Steering Wheel and Column Electrical Components, Diagnosis and Testing).
No GO to D4
D4 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, retrieve the GWM diagnostic trouble codes (DTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
No GO to D5
D5 PERFORM PCM (POWERTRAIN CONTROL MODULE) SELF-TEST
  • Using the diagnostic scan tool, perform a PCM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?
Yes Refer to the PCM DTC Chart in this section.
No GO to D6
D6 RECHECK THE PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
  • Wait 10 seconds.
  • Repeat the PCM self-test.

Is DTC U0126 or U0212 still present?
Yes GO to D7
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
D7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERNS
  • CHECK the vehicle service history for recent service actions related to the SCCM, GWM or PCM. If recent service history is found:
    • make sure the correct replacement module was installed
      • HVBOM can be used to verify the correct part installation.
    • make sure the replacement module configuration was correct
      • reconfigure the module using the original data if the previous configuration is suspected
    • make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
      • Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  • Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?
Yes GO to D8
No The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.
D8 CHECK SCCM (STEERING COLUMN CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the SCCM connector(s).
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the SCCM connector(s). Make sure that they are installed and locked correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article addresses this concern, INSTALL a new
REFER TO: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
DIAGNOSTIC TEST E: U0151

Normal Operation and Fault Symptoms

Refer to: Communication Network - System Operation and Component Description (418-00 Module Communication Network, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
DTC U0151:00 Lost Communication with Restraints Control Module: No Sub Type Information The PCM sets this DTC when data messages from the RCM through the GWM are not present.

Possible Sources

  • Communication network concern
  • RCM
  • GWM
  • PCM
E1 CONFIRM THE CUSTOMER CONCERN
  • The ignition is on.
  • Make sure the observed symptom is present.

Is the observed symptom present?
Yes GO to E2
No The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent condition.
E2 CHECK COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Did the RCM pass the network test?
Yes GO to E3
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
E3 PERFORM RCM (RESTRAINTS CONTROL MODULE) SELF-TEST
  • Using the diagnostic scanner, perform the RCM self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER TO: Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No GO to E4
E4 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, retrieve the GWM diagnostic trouble codes (DTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
No GO to E5
E5 PERFORM PCM (POWERTRAIN CONTROL MODULE) SELF-TEST
  • Using the diagnostic scan tool, perform a PCM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?
Yes Refer to the PCM DTC Chart in this section.
No GO to E6
E6 RECHECK THE PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
  • Wait 10 seconds.
  • Repeat the PCM self-test.

Is DTC U0151 still present?
Yes GO to E7
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
E7 CHECK OTHER CAUSES OF COMMUNICATION NETWORK PROBLEMS
  • CHECK the vehicle service history for recent service actions related to the RCM, GWM or PCM. If recent service history is found:
    • make sure the correct replacement module was installed
      • HVBOM can be used to verify the correct part installation.
    • make sure the replacement module configuration was correct
      • reconfigure the module using the original data if the previous configuration is suspected
    • make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
      • Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  • Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?
Yes GO to E8
No The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.
E8 VERIFY RCM (RESTRAINTS CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the RCM module connector(s).
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Connect the RCM module connector(s). Make sure they are installed and fully seated.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply, INSTALL a new RCM.
REFER to: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
DIAGNOSTIC TEST F: U0164

Normal Operation and Fault Symptoms

Refer to: Communication Network - System Operation and Component Description (418-00 Module Communication Network, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
DTC U0164:00 Lost Communication with HVAC Control Module: No Sub Type Information The PCM sets this DTC when data messages from the HVAC module through the GWM are not present.

Possible Sources

  • Communication network concern
  • HVAC control module
  • GWM
  • PCM
F1 CONFIRM THE CUSTOMER CONCERN
  • The ignition is on.
  • Make sure the observed symptom is present.

Is the observed symptom present?
Yes GO to F2
No The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent condition.
F2 CHECK THE COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Did the HVAC module pass the network test?
Yes GO to F3
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
F3 PERFORM HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE SELF-TEST
  • Using the diagnostic scan tool, perform the HVAC control module self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER TO: Climate Control System (412-00 Climate Control System - General Information, Diagnosis and Testing).
No GO to F4
F4 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, retrieve any BCM diagnostic trouble codes (DTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
No GO to F5
F5 PERFORM PCM (POWERTRAIN CONTROL MODULE) SELF-TEST
  • Using the diagnostic scan tool, perform a PCM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?
Yes Refer to the PCM DTC Chart in this section.
No GO to F6
F6 RECHECK THE PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
  • Wait 10 seconds.
  • Repeat the PCM self-test.

Is DTC U0164 still present?
Yes GO to F7
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
F7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK PROBLEMS
  • CHECK the vehicle service history for recent service actions related to the HVAC module, GWM or PCM. If recent service history is found:
    • make sure the correct replacement module was installed
      • HVBOM can be used to verify the correct part installation.
    • make sure the replacement module configuration was correct
      • reconfigure the module using the original data if the previous configuration is suspected
    • make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
      • Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  • Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?
Yes GO to F8
No The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.
F8 VERIFY RCM (RESTRAINTS CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the HVAC module connector(s).
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Connect the HVAC module connector(s). Make sure they are installed and fully seated.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service bulletins: TSB, GSB, SSM or FSA. If a service bulletin exists for this concern, STOP this test and FOLLOW the service bulletin instructions. If no service bulletins apply, INSTALL a new HVAC control module.
Refer to: Heating, Ventilation and Air Conditioning (HVAC) Control Module (412-00 Climate Control System - General Information, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
DIAGNOSTIC TEST G: U0230

Normal Operation and Fault Symptoms

Refer to: Communication Network - System Operation and Component Description (418-00 Module Communication Network, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
PCM U0230:00 Lost Communication with Liftgate Module: No Sub Type Information The PCM sets this DTC if data messages from the RGTM through the GWM are not present.

Possible Sources

  • Communication network concern
  • RKE
  • GWM
  • PCM
G1 CONFIRM THE CUSTOMER CONCERN
  • The ignition is on.
  • Make sure the observed symptom is present.

Is the observed symptom present?
Yes GO to G2
No The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent condition.
G2 CHECK THE COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Did the RGTM pass the network test?
Yes GO to G3
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
G3 PERFORM RGTM (REAR GATE TAILGATE MODULE) MODULE SELF-TEST
  • Using the diagnostic scan tool, perform the RGTM module self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER TO: Body Closures (501-03 Body Closures, Diagnosis and Testing).
No GO to G4
G4 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, retrieve the GWM diagnostic trouble codes (DTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
No GO to G5
G5 PERFORM PCM (POWERTRAIN CONTROL MODULE) SELF-TEST
  • Using the diagnostic scan tool, perform a PCM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?
Yes Refer to the PCM DTC Chart in this section.
No GO to G6
G6 RECHECK THE PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
  • Wait 10 seconds.
  • Repeat the PCM self-test.

Is DTC U0230 still present?
Yes GO to G7
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
G7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK PROBLEMS
  • CHECK the vehicle service history for recent service actions related to the RGTM, GWM or PCM. If recent service history is found:
    • make sure the correct replacement module was installed
      • HVBOM can be used to verify the correct part installation.
    • make sure the replacement module configuration was correct
      • reconfigure the module using the original data if the previous configuration is suspected
    • make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
      • Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  • Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?
Yes GO to G8
No The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.
G8 VERIFY RGTM (REAR GATE TAILGATE MODULE) MODULE OPERATION
  • Ignition OFF.
  • Disconnect and inspect the RGTM connector(s).
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the RGTM connector(s). Make sure it is fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article addresses this concern, INSTALL a new RGTM module.
REFER TO: Rear Gate Tailgate Module (RGTM) (501-03 Body Latches, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
DIAGNOSTIC TEST H: U023A

Normal Operation and Fault Symptoms

Refer to: Communication Network - System Operation and Component Description (418-00 Module Communication Network, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
PCM U023A:00 Lost Communication with Image Processing Module A: No Sub Type Information The PCM sets this DTC if data messages from the IPMA through the GWM are not present.

Possible Sources

  • Communication network concern
  • IPMA
  • GWM
  • PCM
H1 VERIFY CUSTOMER CONCERN
  • The ignition is on.
  • Make sure the observed symptom is present.

Is the observed symptom present?
Yes GO to H2
No The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent condition.
H2 CHECK THE COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Did the IPMA pass the network test?
Yes GO to H3
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
H3 PERFORM IPMA (IMAGE PROCESSING MODULE A) SELF-TEST
  • Using the diagnostic scan tool, perform the IPMA self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
Refer to: Lane Keeping System (419-07 Lane Keeping System, Diagnosis and Testing).
No GO to H4
H4 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, retrieve the GWM diagnostic trouble codes (DTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
No GO to H5
H5 PERFORM PCM (POWERTRAIN CONTROL MODULE) SELF-TEST
  • Using the diagnostic scan tool, perform a PCM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?
Yes Refer to the PCM DTC Chart in this section.
No GO to H6
H6 RECHECK THE PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
  • Wait 10 seconds.
  • Repeat the PCM self-test.

Is DTC U023A still present?
Yes GO to H7
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
H7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERNS
  • CHECK the vehicle service history for recent service actions related to the IPMA, GWM or PCM. If recent service history is found:
    • make sure the correct replacement module was installed
      • HVBOM can be used to verify the correct part installation.
    • make sure the replacement module configuration was correct
      • reconfigure the module using the original data if the previous configuration is suspected
    • make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
      • Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  • Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?
Yes GO to H8
No The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.
H8 VERIFY IPMA (IMAGE PROCESSING MODULE A) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the IPMA connector(s).
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the IPMA connector(s). Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article addresses this concern, INSTALL a new IPMA.
REFER TO: Interior Rearview Mirror (501-09 Rear View Mirrors, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
DIAGNOSTIC TEST I: U0252

Normal Operation and Fault Symptoms

Refer to: Communication Network - System Operation and Component Description (418-00 Module Communication Network, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
PCM U0252:00 Rear Lighting Control Module "B" Communication Lost: No Sub-Type Information The PCM sets this DTC when there are no data messages from the TRM through the GWM.

Possible Sources

  • Communication network concern
  • TRM
  • GWM
  • PCM
I1 VERIFY CUSTOMER CONCERN
  • The ignition is on.
  • Make sure the observed symptom is present.

Is the observed symptom present?
Yes GO to I2.
No The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent condition.
I2 CHECK THE COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Did the TRM pass the network test?
Yes GO to I3
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
I3 PERFORM TRM (TRAILER MODULE) SELF-TEST
  • Using the diagnostic scan tool, perform the TRM self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER TO: Trailer Lamps (417-01 Exterior Lighting, Diagnosis and Testing).
No GO to I4
I4 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, retrieve the GWM diagnostic trouble codes (DTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
No GO to I5
I5 PERFORM PCM (POWERTRAIN CONTROL MODULE) SELF-TEST
  • Using the diagnostic scan tool, perform a PCM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?
Yes Refer to the PCM DTC Chart in this section.
No GO to I6
I6 RECHECK THE PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
  • Wait 10 seconds.
  • Repeat the PCM self-test.

Is DTC U0252 still present?
Yes GO to I7
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
I7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERNS
  • CHECK the vehicle service history for recent service actions related to the TRM, GWM or PCM. If recent service history is found:
    • make sure the correct replacement module was installed
      • HVBOM can be used to verify the correct part installation.
    • make sure the replacement module configuration was correct
      • reconfigure the module using the original data if the previous configuration is suspected
    • make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
      • Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  • Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?
Yes GO to I8
No The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.
I8 VERIFY TRM (TRAILER MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the TRM connector(s).
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the TRM connector(s). Make sure that they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article addresses this concern, INSTALL a new TRM.
REFER TO: Trailer Module (TRM) (417-01 Exterior Lighting, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
DIAGNOSTIC TEST J: U0253:

Normal Operation and Fault Symptoms

Refer to: Communication Network - System Operation and Component Description (418-00 Module Communication Network, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
PCM U0253:00 Lost Communication with Auxiliary Protocol Interface Module: No Sub Type Information The PCM sets this DTC if data messages from the APIM through the GWM are not present.

Possible Sources

  • Communication network concern
  • APIM
  • GWM
  • PCM
J1 VERIFY CUSTOMER CONCERN
  • The ignition is on.
  • Make sure the observed symptom is present.

Is the observed symptom present?
Yes GO to J2
No The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent condition.
J2 CHECK THE COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Did the APIM pass the network test?
Yes GO to J3
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
J3 PERFORM APIM (APPLICATION PROCESSOR MODULE) MODULE SELF-TEST
  • Using the diagnostic scan tool, perform the APIM self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER TO: Information and Entertainment System - Vehicles With: SYNC 3 (415-00B Information and Entertainment System - General Information - Vehicles With: SYNC 3, Diagnosis and Testing).
No GO to J4
J4 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, retrieve any BCM diagnostic trouble codes (DTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
No GO to J5
J5 PERFORM PCM (POWERTRAIN CONTROL MODULE) SELF-TEST
  • Using the diagnostic scan tool, perform a PCM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?
Yes Refer to the PCM DTC Chart in this section.
No GO to J6
J6 RECHECK THE PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
  • Wait 10 seconds.
  • Repeat the PCM self-test.

Is DTC U0253 still present?
Yes GO to J7
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
J7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERNS
  • CHECK the vehicle service history for recent service actions related to the APIM, GWM or PCM. If recent service history is found:
    • make sure the correct replacement module was installed
      • HVBOM can be used to verify the correct part installation.
    • make sure the replacement module configuration was correct
      • reconfigure the module using the original data if the previous configuration is suspected
    • make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
      • Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  • Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?
Yes GO to J8
No The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.
J8 CHECK THE APIM (SYNC MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the APIM connector(s).
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the APIM connector(s). Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article addresses this concern, INSTALL a new APIM.
REFER TO: SYNC Module [APIM] (415-00B Information and Entertainment System - General Information - Vehicles With: SYNC 3, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
DIAGNOSTIC TEST K: U0404, U0405, U0416, U101E, U101F, U102F

Normal Operation and Fault Symptoms

Refer to Section 1, Description and Operation of the Powertrain Control/Emissions Diagnosis (PC/ED) Manual.

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
PCM U0404:00 Incorrect Data Received from Gear Shift Control Module A: No Sub Type Information This DTC sets when the PCM receives invalid network data from the GSM.
PCM U0405:00 Invalid Data Received from Cruise Control Module: No Sub Type Information This DTC sets when the PCM receives invalid network data from the CCM.
PCM U0416:00 Invalid Data Received from Vehicle Dynamics Module: no subtype information This DTC sets when the PCM receives invalid network data from the VDM.
PCM U101E:00 Invalid Internal Control Module Monitor Data Received from Gear Shift Module: No Sub Type Information This DTC sets when the PCM receives invalid network data from the GSM.
PCM U101F:00 Invalid Internal Control Module Monitor Data Received from Transmission Range Control Module: No Sub-type Information This DTC sets when the PCM receives invalid network data from the TRCM.
PCM U102F:00 Invalid Internal Control Module Monitor Data Received from Four-Wheel Drive Control Module: No Sub Type Information This DTC sets when the PCM receives invalid network data from the all-wheel drive control module.

Possible Sources

  • Suspect module
K1 CHECK DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE MODULE SENDING INVALID DATA
  • Using the diagnostic scan tool, perform a self-test on the applicable module sending invalid data.

Are any diagnostic trouble codes (DTCs) present from the module sending invalid data?
Yes CHECK the module sending invalid data. REFER to the appropriate section in the Workshop Manual.
No DIAGNOSE the observed symptom.
DIAGNOSTIC TEST L: P025A, P025B, P025C, P025D, P027B

Normal Operation and Fault Symptoms

Refer to DTC Fault Trigger Conditions.

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
PCM P025A:00 Fuel Pump Module Control Circuit "A" Open: no subtype information This DTC sets when the PCM detects that the FPC circuit is open or shorted to voltage or ground.
PCM P025B:00 Fuel Pump Module Control Circuit "A" Range/Performance: no subtype information This DTC sets when the fuel pump control module still reports an invalid duty cycle or frequency from the PCM after a calibrated amount of time.
PCM P025C:00 Fuel Pump Module Control Circuit "A" Low: no subtype information This DTC sets when the PCM detects a short to ground on the FPC circuit.
PCM P025D:00 Fuel Pump Module Control Circuit "A" High: no subtype information This DTC sets when the PCM detects that the FPC circuit is open or shorted to voltage.
PCM P027B:00 Fuel Pump Module Control Circuit "B" Range/Performance: no subtype information This DTC sets when the fuel pump control module 2 still reports an invalid duty cycle or frequency from the PCM after a calibrated amount of time.

Possible Sources

  • Fuel pump
  • Fuel Pump Control Module
  • PCM
  • Radio Frequency Interference or Electromagnetic Interference
  • Wiring, Terminals or Connectors
L1 DIAGNOSE CONCERN USING THE PC/ED (POWERTRAIN CONTROL/EMISSIONS DIAGNOSIS) MANUAL
  • Diagnose the concern using the PC/ED Manual.

Did the PC/ED diagnosis direct you to install a new BCM?
Yes
Click here to access the guided procedure (BCM). Internet Explorer version 11 or later is required to perform this Pinpoint test.
No The concern was resolved by the PC/ED.
DIAGNOSTIC TEST M: P0521, P0524, P06DD, P06DE

Normal Operation and Fault Symptoms

Refer to DTC Fault Trigger Conditions.

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
PCM P0521:00 Engine Oil Pressure Sensor/Switch Circuit "A" Range/Performance: no subtype information This DTC sets when the PCM detects a signal out of module range on the wired input from the engine oil pressure sensor.
PCM P0524:00 Engine Oil Pressure Low This DTC sets when the PCM detects low engine oil pressure.
PCM P06DD:00 Engine Oil Pressure Control Circuit Performance / Stuck Off: no subtype information This DTC sets when the PCM detects that the engine oil pressure control solenoid valve is stuck in the off position.
PCM P06DE:00 Engine Oil Pressure Control Circuit Stuck On: no subtype information This DTC sets when the PCM detects that the engine oil pressure control solenoid is stuck in the on position.

Possible Sources

  • Communication network concern
  • Wiring, Terminals or Connectors
  • Internal or external engine oil leak
  • Low engine oil level
  • Engine Oil Pressure Low
  • EOP Sensor
  • Engine oil pressure control solenoid
  • PCM
M1 CHECK THE PCM (POWERTRAIN CONTROL MODULE) FOR DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, retrieve all PCM diagnostic trouble codes (DTCs).

Are there any PCM diagnostic trouble codes (DTCs)?
Yes If DTCs P0521, P0524, P06DD or P06DE are present, GO to M2. If DTCs P0522 or P0523 are present,
REFER TO: Instrument Cluster, Message Center and Warning Chimes (413-01 Instrument Cluster, Message Center and Warning Chimes, Diagnosis and Testing).
. If DTCs P06DA, P06DB or P06DC are present, GO to Pinpoint Test N.
No The system is currently operating correctly. The DTC may have been set due to an intermittent condition.
M2 CHECK THE ENGINE OIL LEVEL
  • Start the engine.
  • Allow the engine to idle until the engine temperature is warm or hot.
  • Ignition OFF.
  • Check the engine oil level.

Is the engine oil level low?
Yes FILL the engine oil to the proper level. Low engine oil level can cause the engine oil pressure warning indicator to illuminate and a DTC to set. CHECK the system for normal operation.
No GO to M3
M3 CHECK THE ENGINE OIL PRESSURE (PARAMETER IDENTIFICATION) WITH THE ENGINE OFF
  • Ignition OFF.
    • Wait a minimum of 60 seconds.
  • KOEO
  • Using a diagnostic scan tool, view the PCM Parameter Identifications (PIDs).

  • Access the PCM and monitor the EOP_PRESS (kPa) PID.

  • Wait approximately 30 seconds.

Is the engine oil pressure approximately 0-30 kPa?
Yes GO to M4
No VISUALLY INSPECT the wiring harness and electrical connector for signs of damage. REPAIR as necessary. If there are no signs of damage, INSTALL a new engine oil pressure sensor.
REFER TO: Engine Oil Pressure Sensor (EOP) (303-14A Electronic Engine Controls - 2.3 L EcoBoost (201 kW/273 L PS), Removal and Installation).
M4 CHECK THE ENGINE OIL PRESSURE AT IDLE
  • Start the engine.
  • Run the engine at idle for 2 minutes.
  • Using a diagnostic scan tool, view the PCM Parameter Identifications (PIDs).

  • Access the PCM and monitor the ECT (deg C) PID

    and monitor the ECT PID until the engine coolant temperature is equal to or greater than 157.9°F (70°C).

  • Access the PCM and monitor the EOP_PRESS (kPa) PID.


Is the PID equal to or greater than 60 kPa?
Yes GO to M6
No GO to M5
M5 PERFORM THE REGULATED OIL PRESSURE ACTUATOR UNLOCK SEQUENCE AND RECHECK THE OIL PRESSURE

  • Access the PCM and monitor the EOPDC_CMD (% duty cycle) PID.

  • Set the PID from MIN to MAX. Wait 15 seconds. Repeat this step 3 times, holding for 15 seconds between steps.

  • Access the PCM and monitor the EOP_PRESS (kPa) PID.


Is the EOP_PRESS PID value displayed greater than or equal to 60 kPa?
Yes GO to M6
No CHECK the oil pressure using a mechanical pressure gauge.
REFER TO: Engine (303-00 Engine System - General Information, Diagnosis and Testing).
M6 ENGINE OIL PRESSURE DUTY CYCLE COMMAND (PARAMETER IDENTIFICATION)

  • Access the PCM and monitor the RPM_DSD (rpm) PID.

  • Set the desired engine speed to 1800 rpm.

  • Access the PCM and monitor the EOPDC_CMD (% duty cycle) PID.

  • Set the PID to 20% and wait 10 seconds.

  • Access the PCM and monitor the EOP_PRESS (kPa) PID.


Is the EOP greater than 170 kPa?
Yes GO to M8
No GO to M7
M7 PERFORM THE REGULATED OIL PRESSURE ACTUATOR UNLOCK SEQUENCE AND RECHECK THE OIL PRESSURE

  • Access the PCM and monitor the EOPDC_CMD (% duty cycle) PID.

  • Set the PID from MIN to MAX. Wait 15 seconds. Repeat this step 3 times, holding for 15 seconds between steps.

  • Access the PCM and monitor the EOP_PRESS (kPa) PID.


Is the EOP_PRESS PID value displayed greater than or equal to 60 kPa?
Yes GO to M8
No CHECK the oil pressure using a mechanical pressure gauge.
REFER TO: Engine (303-00 Engine System - General Information, Diagnosis and Testing).
M8 CLEAR AND CHECK THE PCM (POWERTRAIN CONTROL MODULE) FOR DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, clear all PCM diagnostic trouble code (DTC) history.
  • The ignition is on.
    • Wait 20 seconds.
  • Start the engine and allow it to idle for 30 seconds.
  • Hold the throttle at WOT for 30 seconds.
  • Using a diagnostic scan tool, retrieve all PCM diagnostic trouble codes (DTCs).

Are there any PCM diagnostic trouble codes (DTCs)?
Yes CHECK the oil pressure using a mechanical pressure gauge.
REFER TO: Engine (303-00 Engine System - General Information, Diagnosis and Testing).
No No oil pressure concern exists. The concern may be resolved by performing the unlock sequence.
DIAGNOSTIC TEST N: P06DA, P06DB, P06DC

For circuit and connector information, REFER TO Wiring Diagrams Cell 23.

Normal Operation and Fault Symptoms

Refer to DTC Fault Trigger Conditions.

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
PCM P06DA:00 Engine Oil Pressure Control Circuit Short/Open: no subtype information This DTC sets when the PCM detects an open circuit in the engine oil pressure control solenoid circuit.
PCM P06DB:00 Engine Oil Pressure Control Circuit Low: no subtype information This DTC sets when the PCM detects a short to ground in the engine oil pressure control solenoid circuit.
PCM P06DC:00 Engine Oil Pressure Control Circuit High: no subtype information This DTC sets when the PCM detects a short to voltage in the engine oil pressure control solenoid circuit.

Possible Sources

  • Communication network concern
  • Wiring, Terminals or Connectors
  • Engine oil pressure control solenoid
  • PCM
N1 CHECK THE PCM (POWERTRAIN CONTROL MODULE) FOR DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, retrieve all PCM diagnostic trouble codes (DTCs).

Are there any PCM diagnostic trouble codes (DTCs)?
Yes GO to N2
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
N2 CLEAR AND CHECK THE PCM (POWERTRAIN CONTROL MODULE) FOR DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, clear all PCM diagnostic trouble codes (DTCs).
  • Using a diagnostic scan tool, retrieve all PCM diagnostic trouble codes (DTCs).

Are there any PCM diagnostic trouble codes (DTCs)?
Yes GO to N3
No The system is currently operating correctly. The DTC may have been set due to an intermittent condition.
N3 MONITOR THE ENGINE OIL PRESSURE CONTROL OUTPUT CIRCUIT FAULT (PARAMETER IDENTIFICATION)
  • The ignition is on.
  • Using a diagnostic scan tool, view the PCM Parameter Identifications (PIDs).

  • Access the PCM and monitor the EOPC_CIRC_F PID.


Are the PID readings correct?
Yes GO to N4
No The circuit fault is not currently active. CLEAR any diagnostic trouble code (DTC) history, drive the vehicle and RECHECK for PCM diagnostic trouble codes (DTCs).
N4 CHECK THE ENGINE OIL PRESSURE CONTROL SOLENOID SUPPLY VOLTAGE
  • Ignition OFF.
  • Disconnect the engine oil pressure control solenoid C1748.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C1748-1 Ground

Is the voltage greater than 11 volts?
Yes GO to N5
No CHECK the BJB fuse F8 (20A) for integrity. If OK, REPAIR the open circuit. If not OK, REFER to the Wiring Diagrams Cell to identify possible causes of the short circuit.
N5 CHECK THE OIL PRESSURE CONTROL SOLENOID CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect the PCM C1381E.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C1748-2 Ground

Is there voltage present?
Yes REPAIR the circuit.
No GO to N6
N6 CHECK THE OIL PRESSURE CONTROL SOLENOID CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C1381E-7 C1748-2

Is the resistance less than 3 ohms?
Yes GO to N7
No REPAIR the circuit.
N7 CHECK THE OIL PRESSURE CONTROL SOLENOID CIRCUIT FOR A SHORT TO GROUND
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C1748-2 Ground

Is the resistance greater than 10000 Ohms?
Yes GO to N8
No REPAIR the circuit.
N8 CHECK THE OIL PRESSURE CONTROL SOLENOID FOR AN OPEN
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C1748 pin 1, component side C1748 pin 2, component side

Is the resistance less than 3 ohms?
Yes GO to N9
No INSTALL a new oil pressure control solenoid.
REFER TO: Engine Oil Pressure Control Solenoid (303-14A Electronic Engine Controls - 2.3 L EcoBoost (201 kW/273 L PS), Removal and Installation).
N9 CHECK THE ENGINE OIL PRESSURE CONTROL SOLENOID, CONNECTOR AND WIRING
  • Disconnect the engine oil pressure control solenoid valve C1748.
  • Disconnect the PCM connectors.
  • Inspect the connectors and wiring:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent terminals/pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect all connectors. Make sure they are installed and locked correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes REPAIR the circuit or connector as necessary.
No The system is currently operating correctly. The concern may have been caused by a loose module or solenoid connection. REPAIR the root cause of any connector or terminal issues.
DIAGNOSTIC TEST O: P06E9

Normal Operation and Fault Symptoms

REFER TO: Engine - Overview (303-01A Engine - 2.3 L EcoBoost (201 kW/273 L hp), Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
PCM P06E9:00 Engine Starter Motor Performance: No Sub-type Information No engine cranking detected during start attempt

Possible Sources

  • Battery
  • Battery Cables
  • PCM
  • Starter Motor
  • BJB Starter Relay
  • Wiring, Terminals or Connectors
O1 CHECK THE ENGINE HANDLES
  • Turn the ignition to the START position.

Does the engine crank?
Yes REFER TO Section 3 PCM/ED and FOLLOW Symptom Chart 3 for No Start (Engine Cranks).
No
REFER TO: Starting System - 2.3 L EcoBoost (201 kW/273 L hp) (303-06A Starting System - 2.3 L EcoBoost (201 kW/273 L hp), Diagnosis and Testing).
DIAGNOSTIC TEST P: P1001

Normal Operation and Fault Symptoms

REFER TO: Starting System - System Operation and Component Description (303-06A Starting System - 2.3 L EcoBoost (201 kW/273 L hp), Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
PCM P1001:00 KOER Cannot Complete, KOER Aborted: No Sub Type Information This DTC sets when the KOER self-test does not complete within the allotted time.

Possible Sources

  • Incorrect self-test procedure
  • Unexpected response from self-test monitors
  • RPM out of specification
P1 CHECK DIAGNOSTIC TROUBLE CODES (DTCS)
  • Turn the ignition to the START position.
  • Using a diagnostic scan tool, retrieve and record all diagnostic trouble codes (DTCs).
  • Repair all self-test or continuous memory diagnostic trouble codes (CMDTCs) and clear the DTC(s).
  • Rerun the KOER self-test.

Did DTC P1001 return?
Yes GO to P2
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
P2 REPROGRAM THE PCM (POWERTRAIN CONTROL MODULE)
  • Reprogram the PCM with the latest software.
    REFER TO: Module Programming (418-01 Module Configuration, General Procedures).
  • Rerun the KOER self-test.

Did DTC P1001 return?
Yes
Click here to access the guided routine (PCM). Internet Explorer version 11 or later is required to perform this Pinpoint test.
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
DIAGNOSTIC TEST Q: P166A

Normal Operation and Fault Symptoms

REFER TO: Module Controlled Functions - System Operation and Component Description (419-10 Multifunction Electronic Modules, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
PCM P166A:00 Restraint Deployment Communication Circuit: No Sub Type Information This DTC sets when the PCM detects an open or short circuit in the IES circuit.

Possible Sources

  • BCM
  • Wiring, Terminals or Connectors
Q1 DIAGNOSE THE CONCERN USING THE PCM/ED (POWERTRAIN CONTROL/EMISSIONS DIAGNOSTICS) MANUAL
  • Diagnose the concern using the PC/ED manual test.

Did the PC/ED diagnosis direct you to install a new BCM?
Yes
Click here to access the guided procedure (BCM). Internet Explorer version 11 or later is required to perform this Pinpoint test.
No The concern was resolved using the PC/ED manual test.

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