Ford Explorer Quiz
Body and Paint

Diagnosis and Testing - Second Row Seats

In this manual: Body and Paint
General Information — 41Chassis — 173Powertrain — 250Electrical — 303Body and Paint — 331
~64min 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
SCMF B1151:4B Passenger Seat Cushion: Overheated GO to Pinpoint Test J
SCMF B1153:4B Driver Seat Cushion: Overheated GO to Pinpoint Test I
SCMF B1155:01 Passenger Seat: General Electrical Failure GO to Pinpoint Test J
SCMF B1155:11 Passenger Seat: Circuit Short to Ground GO to Pinpoint Test J
SCMF B1155:12 Passenger Seat: Circuit Short to Battery GO to Pinpoint Test J
SCMF B1155:13 Passenger Seat: Circuit Open GO to Pinpoint Test J
SCMF B1155:1A Passenger Seat: Circuit Resistance Below Threshold GO to Pinpoint Test J
SCMF B1156:01 Driver Seat: General Electrical Failure GO to Pinpoint Test I
SCMF B1156:11 Driver Seat: Circuit Short to Ground GO to Pinpoint Test I
SCMF B1156:12 Driver Seat: Circuit Short to Battery GO to Pinpoint Test I
SCMF B1156:1A Driver Seat: Circuit Resistance Below Threshold GO to Pinpoint Test I
SCMF B1208:01 Driver Seat Cushion Temperature Sensor: General Electrical Failure GO to Pinpoint Test I
SCMF B1208:11 Driver Seat Cushion Temperature Sensor: Short to Ground GO to Pinpoint Test I
SCMF B1208:15 Driver Seat Cushion Temperature Sensor: Short to Battery or Open Circuit GO to Pinpoint Test I
SCMF B120A:01 Passenger Seat Cushion Temperature Sensor: General Electrical Failure GO to Pinpoint Test J
SCMF B120A: 11 Passenger Seat Cushion Temperature Sensor: Short to Ground GO to Pinpoint Test J
SCMF B120A: 15 Passenger Seat Cushion Temperature Sensor: Short to Battery or Open Circuit GO to Pinpoint Test J
SCMF B14BD:11 Driver Seat Cushion Fan: Short to Ground GO to Pinpoint Test L
SCMF B14BE:11 Driver Seat Back Fan: Circuit Short to Ground GO to Pinpoint Test L
SCMF B14C0:11 Passenger Seat Cushion Fan: Short to Ground GO to Pinpoint Test M
SCMF B14C2:11 Passenger Seat Back Fan: Circuit Short to Ground GO to Pinpoint Test M
SCMF U0140:00 Lost Communication With Body Control Module: No Sub Type Information GO to Pinpoint Test P
SCMF U0257:00 Communication Lost with Front Control Panel/Display Interface Module: No Sub-type Information GO to Pinpoint Test Q
SCMF U1000:00 Solid State Driver Protection Active - Driver Disabled: No Sub Type Information GO TO Pinpoint Test R
SCMF U2100:00 Initial Configuration Not Complete: No Sub Type Information GO to Pinpoint Test S
SCMF U3000:49 Control Module: Internal Electronic Failure GO TO Pinpoint Test T
SCMJ B137A:11 Left Input Output: Circuit Short to Ground GO to Pinpoint Test N
SCMJ B137A:15 Left Input Output: Circuit Short to Battery or Open GO to Pinpoint Test N
SCMJ B137B:11 Right Input Output: Circuit Short to Ground GO TO Pinpoint Test O
SCMJ B137B:15 Right Input Output: Circuit Short to Battery or Open GO TO Pinpoint Test O
SCMJ B1546:23 Left Input Switch: Signal Level Low GO to Pinpoint Test N
SCMJ B1547:23 Right Input Switch: Signal Level Low GO TO Pinpoint Test O

Symptom Chart

Symptom Chart: Second-Row Seats

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).


Symptom Chart


Condition Possible Sources Action
No Communication with SCMF
  • Refer to Pinpoint Test

  • REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
No Communication with SCMJ
  • Refer to Pinpoint Test

  • REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
Both Rear Heated Seats Do Not Operate - No Heated/Ventilated Seat Operation
  • Refer to Pinpoint Test
  • GO to Pinpoint Test A
Left Rear Heated Seat Does Not Operate - No Heated/Ventilated Seat Operation
  • Refer to Pinpoint Test
  • GO to Pinpoint Test B
Right Rear Heated Seat Does Not Operate - No Heated/Ventilated Seat Operation
  • Refer to Pinpoint Test
  • GO to Pinpoint Test C
Left Rear Heated Seat Heats Correctly but Indicator Does Not Illuminate When Activated - No Heated/Ventilated Seat Operation
  • Refer to Pinpoint Test
  • GO to Pinpoint Test D
Right Rear Heated Seat Heats Correctly but Indicator Does Not Illuminate When Activated - No Heated/Ventilated Seat Operation
  • Refer to Pinpoint Test
  • GO to Pinpoint Test E
Left Rear Heated Seat Indicator Always On - No Heated/Ventilated Seat Operation
  • Refer to Pinpoint Test
  • GO to Pinpoint Test F
Right Rear Heated Seat Indicator Always On - No Heated/Ventilated Seat Operation
  • Refer to Pinpoint Test
  • GO to Pinpoint Test G
Both seat heaters inoperative — with seat heater/ventilation
  • Refer to Pinpoint Test
  • GO to Pinpoint Test H
Left Heated Seat Does Not Operate/Operates Incorrectly - With Heated/Ventilated Seats
  • Refer to Pinpoint Test
  • GO to Pinpoint Test I
Right Heated Seat Does Not Operate/Operates Incorrectly - With Heated/Ventilated Seats
  • Refer to Pinpoint Test
  • GO to Pinpoint Test J
Both Ventilated Seats Do Not Operate
  • Refer to Pinpoint Test
  • GO to Pinpoint Test K
Left Ventilated Seat Does Not Operate/Operates Incorrectly
  • Refer to Pinpoint Test
  • GO to Pinpoint Test L
Right Ventilated Seat Does Not Operate/Operates Incorrectly
  • Refer to Pinpoint Test
  • GO to Pinpoint Test M
Left Easy Entry Power Seat Does Not Operate
  • Refer to Pinpoint Test
  • GO to Pinpoint Test N
Right Easy Entry Power Seat Does Not Operate
  • Refer to Pinpoint Test
  • GO TO Pinpoint Test O

Pinpoint Tests


DIAGNOSTIC TEST A: BOTH REAR SEAT HEATERS INOPERATIVE - WITHOUT HEATED/VENTILATED SEATS

REFER TO the Wiring Diagrams, Cell 119, for schematic and connector information.

Normal Operation and Fault Symptoms

REFER TO: Second-Row Seats System Operation and Component Description (501-10B Second-Row Seats, Description and Operation).

Possible Sources

  • Fuse
  • Wiring, Terminals or Connectors
  • Seat Heater Module

Visual Inspection and Pre-checks

  • Check that fuse BJB 118 (30A) is OK.
A1 CHECK THE VOLTAGE AT THE REAR SEAT HEATER MODULE
  • Ignition OFF.
  • Disconnect the rear seat heater module C3183B.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183B-1 Ground
    C3183B-2 Ground

Is the voltage greater than 11 volts?
Yes GO to A2
No CHECK fuse BJB 118 (30A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Electrical Circuit Diagrams to determine the possible cause of the short circuit.
A2 CHECK THE REAR SEAT HEATER MODULE GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183B-5 Ground

Is the resistance less than 3 ohms?
Yes GO to A3
No REPAIR the circuit.
A3 CHECK THE REAR SEAT HEATER SWITCH IS PROVIDING A GROUND SIGNAL TO THE SEAT HEATER MODULE
  • Disconnect the rear seat heater module C3183A.
  • Press and release the left rear seat heater switch and measure:
    Press to display connectors
    Positive lead Measurement/Action Negative lead
    C3183A-2 Ground

Is the resistance less than 3 ohms with the switch pressed and greater than 10,000 ohms with the switch released?
Yes GO to A5
No GO to A4
A4 CHECK THE REAR SEAT HEATER SWITCH GROUND CIRCUIT FOR AN OPEN
  • Disconnect the RHVAC module C3198.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3198-5 Ground

Is the resistance less than 3 ohms?
Yes INSTALL a new RHVAC module.
REFER TO: Rear Heating, Ventilation and Air Conditioning (RHVAC) Control Module (412-02 Rear Climate Control, Removal and Installation).
No REPAIR the circuit.
A5 CHECK THE TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183A-3 Ground

Is there voltage present?
Yes REPAIR the circuit.
No GO to A6
A6 CHECK THE TEMPERATURE SENSOR CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183A-3 C3183A-12

Is the resistance between 300 and 300 kOhm?
Yes INSTALL a new rear seat heater module.
REFER TO: Second-Row Seat Heater Module (501-10B Second-Row Seats, Removal and Installation).
No REPAIR the circuit.
DIAGNOSTIC TEST B: LEFT-HAND (LH) REAR SEAT HEATER INOPERATIVE - WITHOUT HEATED/VENTILATED SEATS

REFER TO the Wiring Diagrams, Cell 119, for schematic and connector information.

Normal Operation and Fault Symptoms

REFER TO: Second-Row Seats System Operation and Component Description (501-10B Second-Row Seats, Description and Operation).

Possible Sources

  • Wiring, Terminals or Connectors
  • HVAC Module
  • Heater Pad
  • Seat Heater Module
B1 CHECK THE SEAT HEATER SWITCH INPUT
  • Ignition OFF.
  • Disconnect the rear seat heater module C3183A.
  • Press and release the left rear seat heater switch and measure:
    Press to display connectors
    Positive lead Measurement/Action Negative lead
    C3183A-2 Ground

Is the resistance less than 3 ohms with the switch pressed and greater than 10,000 ohms with the switch released?
Yes GO to B3
No GO to B2
B2 CHECK THE SEAT HEATER SWITCH CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Disconnect the RHVAC module C3198.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3198-9 C3183A-2
    C3198-9 Ground

Is the resistance between the RHVAC module and the seat heater module less than 3 ohms, and greater than 10,000 ohms between the RHVAC module and ground?
Yes INSTALL a new RHVAC module.
REFER TO: Rear Heating, Ventilation and Air Conditioning (RHVAC) Control Module (412-02 Rear Climate Control, Removal and Installation).
No REPAIR the circuit.
B3 CHECK VOLTAGE AT THE SEAT HEATER MODULE
  • Disconnect the rear seat heater module C3183B.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183B-1 Ground

Is the voltage greater than 11 volts?
Yes GO to B4
No REPAIR the circuit.
B4 CHECK THE HEATER CIRCUITS AND HEATER MATS FOR OPEN
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183B-4 Ground

Is the resistance between 3 and 5 ohms?
Yes GO to B9
No GO to B5
B5 CHECK THE HEATER MAT GROUND CIRCUIT FOR OPEN
  • Disconnect the left rear seat back heater mat C3360.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3360-2 Ground

Is the resistance less than 3 ohms?
Yes GO to B6
No REPAIR the circuit.
B6 CHECK THE HEATER CIRCUIT FOR OPEN OR SHORT TO GROUND
  • Disconnect the left rear seat cushion heater mat C3167.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183B-4 C3167-1
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183B-4 Ground

Is the resistance between the seat heater module and the left rear seat cushion heater mat less than 3 ohms, and greater than 10,000 ohms between the seat heater module and ground?
Yes GO to B7
No REPAIR the circuit.
B7 CHECK THE CUSHION HEATER FOR OPEN
  • Measure the component side resistance between:
    Positive lead Measurement/Action Negative lead
    C3167-1, component side C3167-4, component side

Is the resistance between 0.7 and 1.5 ohms?
Yes GO to B8
No INSTALL a new cushion heater mat.
REFER TO: Seat Heater Mat Removal and Installation (501-10A Front Seats, General Procedures).
B8 CHECK FOR OPEN OR SHORT TO GROUND BETWEEN THE HEATER MATS
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3167-4 C3360-1
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3167-4 Ground

Is the resistance less than 3 ohms between the cushion heater mat and the back heater mat, and greater than 10,000 ohms between the cushion heater mat and ground?
Yes INSTALL a new back heater mat.
REFER TO: Seat Heater Mat Removal and Installation (501-10A Front Seats, General Procedures).
No REPAIR the circuit.
B9 CHECK THE TEMPERATURE SENSOR CIRCUIT FOR SHORT TO VOLTAGE
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183A-3 Ground

Is there voltage present?
Yes REPAIR the circuit.
No GO to B10
B10 CHECK THE TEMPERATURE SENSOR CIRCUIT FOR SHORT TO GROUND
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183A-3 Ground

Is the resistance greater than 10000 Ohms?
Yes GO to B11
No REPAIR the circuit.
B11 CHECK THE TEMPERATURE SENSOR AND CIRCUITS FOR OPEN
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183A-3 C3183A-12

Is the resistance between 300 and 300 kOhm?
Yes INSTALL a new rear seat heater module.
REFER TO: Second-Row Seat Heater Module (501-10B Second-Row Seats, Removal and Installation).
No GO to B12
B12 CHECK THE TEMPERATURE SENSOR FOR OPEN WITH THE HEATER MAT DISCONNECTED
  • Disconnect the left rear seat cushion heater mat C3167.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183A-3 C3167-2
    C3183A-12 C3167-3

Is the resistance less than 3 ohms?
Yes INSTALL a new cushion heater mat.
REFER TO: Seat Heater Mat Removal and Installation (501-10A Front Seats, General Procedures).
No REPAIR the faulty circuit.
DIAGNOSTIC TEST C: RIGHT-HAND (RH) REAR SEAT HEATER INOPERATIVE - WITHOUT HEATED/VENTILATED SEATS

REFER TO the Wiring Diagrams, Cell 119, for schematic and connector information.

Normal Operation and Fault Symptoms

REFER TO: Second-Row Seats System Operation and Component Description (501-10B Second-Row Seats, Description and Operation).

Possible Sources

  • Wiring, Terminals or Connectors
  • HVAC Module
  • Seat Heater Module
C1 CHECK THE SEAT HEATER SWITCH INPUT
  • Ignition OFF.
  • Disconnect the rear seat heater module C3183A.
  • Press and release the right rear seat heater switch, and measure:
    Press to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183A-8 Ground

Is the resistance less than 3 ohms with the switch pressed and greater than 10,000 ohms with the switch released?
Yes GO to C3
No GO to C2
C2 CHECK THE SEAT HEATER SWITCH CIRCUIT FOR OPEN OR SHORT TO GROUND
  • Disconnect the RHVAC module C3198.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3198-10 C3183A-8
    C3198-10 Ground

Is the resistance between the RHVAC module and the rear seat heater module less than 3 ohms, and greater than 10,000 ohms between the RHVAC module and ground?
Yes INSTALL a new RHVAC module.
REFER TO: Rear Heating, Ventilation and Air Conditioning (RHVAC) Control Module (412-02 Rear Climate Control, Removal and Installation).
No REPAIR the circuit.
C3 CHECK VOLTAGE AT THE SEAT HEATER MODULE
  • Disconnect the rear seat heater module C3183B.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183B-3 Ground

Is the voltage greater than 11 volts?
Yes GO TO C4
No REPAIR the circuit.
C4 CHECK THE HEATER CIRCUITS AND HEATER MATS FOR OPEN
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183B-6 Ground

Is the resistance between 3 and 5 ohms?
Yes GO TO C9
No GO to C5
C5 CHECK THE HEATER MAT GROUND CIRCUIT FOR OPEN
  • Disconnect the right rear seat back heater mat C3362.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3362-2 Ground

Is the resistance less than 3 ohms?
Yes GO to C6
No REPAIR the circuit.
C6 CHECK THE HEATER CIRCUIT FOR OPEN OR SHORT TO GROUND
  • Disconnect the right rear seat cushion heater mat C3363.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183B-6 C3363-1
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183B-6 Ground

Is the resistance less than 3 ohms between the rear seat heater module and the rear seat cushion heater mat, and greater than 10,000 ohms between the rear seat heater module and ground?
Yes GO TO C7
No REPAIR the circuit.
C7 CHECK THE CUSHION HEATER FOR OPEN
  • Measure the component side resistance between:
    Positive lead Measurement/Action Negative lead
    C3363-1, component side C3363-4, component side

Is the resistance between 0.7 and 1.5 ohms?
Yes GO TO C8
No INSTALL a new cushion heater mat.
REFER TO: Seat Heater Mat Removal and Installation (501-10A Front Seats, General Procedures).
C8 CHECK FOR OPEN OR SHORT TO GROUND BETWEEN THE HEATER MATS
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3363-4 C3362-1
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3363-4 Ground

Is the resistance less than 3 ohms between the cushion heater mat and the back heater mat, and greater than 10,000 ohms between the cushion heater mat and ground?
Yes INSTALL a new back heater mat.
REFER TO: Seat Heater Mat Removal and Installation (501-10A Front Seats, General Procedures).
No REPAIR the circuit.
C9 CHECK THE TEMPERATURE SENSOR CIRCUIT FOR SHORT TO VOLTAGE
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183A-9 Ground

Is there voltage present?
Yes REPAIR the circuit.
No GO TO C10
C10 CHECK THE TEMPERATURE SENSOR CIRCUIT FOR SHORT TO GROUND
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183A-9 Ground

Is the resistance greater than 10000 Ohms?
Yes GO TO C11
No REPAIR the circuit.
C11 CHECK THE TEMPERATURE SENSOR AND CIRCUITS FOR OPEN
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183A-9 C3183A-12

Is the resistance between 300 and 300 kOhm?
Yes INSTALL a new rear seat heater module.
REFER TO: Second-Row Seat Heater Module (501-10B Second-Row Seats, Removal and Installation).
No GO TO C12
C12 CHECK THE TEMPERATURE SENSOR FOR OPEN WITH THE HEATER MAT DISCONNECTED
  • Disconnect the right rear seat cushion heater mat C3363.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183A-9 C3363-2
    C3183A-12 C3363-3

Is the resistance less than 3 ohms?
Yes INSTALL a new cushion heater mat.
REFER TO: Seat Heater Mat Removal and Installation (501-10A Front Seats, General Procedures).
No REPAIR the faulty circuit.
DIAGNOSTIC TEST D: LEFT-HAND (LH) REAR SEAT HEATER OPERATES CORRECTLY BUT INDICATOR DOES NOT ILLUMINATE WHEN ACTIVATED - WITHOUT HEATED/VENTILATED SEATS

REFER TO the Wiring Diagrams, Cell 119, for schematic and connector information.

Normal Operation and Fault Symptoms

REFER TO: Second-Row Seats System Operation and Component Description (501-10B Second-Row Seats, Description and Operation).

Possible Sources

  • Wiring, Terminals or Connectors
  • HVAC Module
  • Seat Heater Module

Visual Inspection and Pre-checks

  • Inspect the rear seat heater switch for damage.
D1 CHECK THE SEAT HEATER INDICATOR CIRCUITS FOR SHORT TO GROUND
  • Ignition OFF.
  • Disconnect the rear seat heater module C3183A.
  • Disconnect the RHVAC module C3198.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183A-4 Ground
    C3183A-5 Ground

Is the resistance greater than 10000 ohms?
Yes GO to D2
No REPAIR the faulty circuit.
D2 CHECK THE SEAT HEATER INDICATOR CIRCUITS FOR OPEN
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183A-4 C3198-3
    C3183A-5 C3198-7

Is the resistance less than 3 ohms?
Yes GO to D3
No REPAIR the faulty circuit.
D3 CHECK THE HIGH HEAT INDICATOR
  • Disconnect the rear seat heater module C3183B.
  • Connect the RHVAC module C3198.
  • Connect:
    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C3183A-5 C3183B-1

Is the high heat indicator on?
Yes REMOVE the fuse jumper. GO to D4.
No REMOVE the fuse jumper. INSTALL a new RHVAC module.
REFER TO: Rear Climate Control Module Removal and Installation (412-02 Rear Climate Control, Removal and Installation).
D4 CHECK THE LOW HEAT INDICATOR
  • Connect:
    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C3183A-4 C3183B-1

Is the low heat indicator on?
Yes REMOVE the fuse jumper. INSTALL a new rear seat heater module.
REFER TO: Second Row Seat Heater Module (501-10B Second Row Seats, Removal and Installation).
No REMOVE the fuse jumper. INSTALL a new RHVAC module.
REFER TO: Rear Climate Control Module Removal and Installation (412-02 Rear Climate Control, Removal and Installation).
DIAGNOSTIC TEST E: RIGHT-HAND (RH) REAR SEAT HEATER OPERATES CORRECTLY BUT INDICATOR DOES NOT ILLUMINATE WHEN ACTIVATED - WITHOUT HEATED/VENTILATED SEATS

REFER TO the Wiring Diagrams, Cell 119, for schematic and connector information.

Normal Operation and Fault Symptoms

REFER TO: Second-Row Seats System Operation and Component Description (501-10B Second-Row Seats, Description and Operation).

Possible Sources

  • Wiring, Terminals or Connectors
  • HVAC Module
  • Seat Heater Module

Visual Inspection and Pre-checks

  • Inspect the rear seat heater switch for damage.
E1 CHECK THE SEAT HEATER INDICATOR CIRCUITS FOR SHORT TO GROUND
  • Ignition OFF.
  • Disconnect the rear seat heater module C3183A.
  • Disconnect the RHVAC module C3198.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183A-10 Ground
    C3183A-11 Ground

Is the resistance greater than 10000 ohms?
Yes GO to E2
No REPAIR the faulty circuit.
E2 CHECK THE SEAT HEATER INDICATOR CIRCUITS FOR OPEN
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3183A-10 C3198-4
    C3183A-11 C3198-8

Is the resistance less than 3 ohms?
Yes GO to E3
No REPAIR the faulty circuit.
E3 CHECK THE HIGH HEAT INDICATOR
  • Disconnect the rear seat heater module C3183B.
  • Connect the RHVAC module C3198.
  • Connect:
    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C3183A-11 C3183B-3

Is the high heat indicator on?
Yes REMOVE the fuse jumper. GO to E4.
No REMOVE the fuse jumper. INSTALL a new RHVAC module.
REFER TO: Rear Climate Control Module Removal and Installation (412-02 Rear Climate Control, Removal and Installation).
E4 CHECK THE LOW HEAT INDICATOR
  • Connect:
    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C3183A-10 C3183B-3

Is the low heat indicator on?
Yes REMOVE the fuse jumper. INSTALL a new rear seat heater module.
REFER TO: Second Row Seat Heater Module (501-10B Second Row Seats, Removal and Installation).
No REMOVE the fuse jumper. INSTALL a new RHVAC module.
REFER TO: Rear Climate Control Module Removal and Installation (412-02 Rear Climate Control, Removal and Installation).
DIAGNOSTIC TEST F: LEFT-HAND (LH) REAR SEAT HEATER INDICATOR ALWAYS ON - WITHOUT HEATED/VENTILATED SEATS

REFER TO the Wiring Diagrams, Cell 119, for schematic and connector information.

Normal Operation and Fault Symptoms

REFER TO: Second-Row Seats System Operation and Component Description (501-10B Second-Row Seats, Description and Operation).

Possible Sources

  • Wiring, Terminals or Connectors
  • Seat Heater Module
F1 CHECK THE LEFT REAR SEAT HEATER SWITCH INDICATOR CIRCUIT FOR SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: rear seat heater module C3183A.
  • The ignition is on.

Is the left rear seat heater indicator still on?
Yes REPAIR the circuit.
No INSTALL a new rear seat heater module.
REFER TO: Second-Row Seat Heater Module (501-10B Second-Row Seats, Removal and Installation).
DIAGNOSTIC TEST G: RIGHT-HAND (RH) REAR SEAT HEATER INDICATOR ALWAYS ON - WITHOUT HEATED/VENTILATED SEATS

REFER TO the Wiring Diagrams, Cell 119, for schematic and connector information.

Normal Operation and Fault Symptoms

REFER TO: Second-Row Seats System Operation and Component Description (501-10B Second-Row Seats, Description and Operation).

Possible Sources

  • Wiring, Terminals or Connectors
  • Seat Heater Module
G1 CHECK THE RIGHT REAR SEAT HEATER SWITCH INDICATOR CIRCUIT FOR SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: rear seat heater module C3183A.
  • The ignition is on.

Is the right rear seat heater indicator still on?
Yes REPAIR the circuit.
No INSTALL a new rear seat heater module.
REFER TO: Second-Row Seat Heater Module (501-10B Second-Row Seats, Removal and Installation).
DIAGNOSTIC TEST H: BOTH SEAT HEATERS INOPERATIVE - HEATED/VENTILATED SEATS

REFER TO the Wiring Diagrams, Cell 119, for schematic and connector information.

Normal Operation and Fault Symptoms

REFER TO: Second-Row Seats System Operation and Component Description (501-10B Second-Row Seats, Description and Operation).

Possible Sources

  • Fuse
  • Wiring, Terminals or Connectors
  • HVAC Module
  • SCMF

Visual Inspection and Pre-checks

  • Check that fuse BJB 118 (30A) is OK.
H1 CHECK THE REAR CLIMATE CONTROL (HEATING, VENTILATION AND AIR CONDITIONING) MODULE PARAMETER IDENTIFICATION (PIDS) OF THE SEAT HEATER SWITCH
  • Start the engine.
  • Using the diagnostic scan tool, monitor the RHVAC. Identify the CC_SW_D_HSEATS and CC_SW_P_HSEATS parameters (PIDs) while pressing and releasing the driver and passenger seat heater control switches.

Do the parameter identifications (PIDs) change when the driver and passenger seat heater control switches are pressed and released?
Yes GO to H2
No INSTALL a new RHVAC module.
REFER TO: Rear Heating, Ventilation and Air Conditioning (RHVAC) Control Module (412-02 Rear Climate Control, Removal and Installation).
H2 CHECK THE SCMF (SECOND ROW CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition OFF.
  • The ignition is on.
  • Using the diagnostic scan tool, perform the SCMF self-test.

Are there any SCMF diagnostic trouble codes (DTCs) present?
Yes REFER TO the SCMF DTC Chart in this section.
No GO to H3
H3 CHECK THE HEATED SEAT POWER SUPPLY CIRCUITS FOR OPEN
  • Ignition OFF.
  • Disconnect: SCMF module C3365C.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365C-2 Ground
    C3365C-5 Ground

Is the voltage greater than 11 volts?
Yes GO to H4
No CHECK BJB fuse 118 (30A) is OK. If OK, REPAIR the faulty circuit. If not OK, REFER TO the wiring diagrams to determine possible causes of the short circuit.
H4 CHECK THE HEATED SEAT GROUND CIRCUITS FOR OPEN
  • Ignition OFF.
  • Disconnect: SCMF module C3365B.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365B-4 Ground
    C3365B-5 Ground

Is the resistance less than 3 ohms?
Yes GO to H5
No REPAIR the faulty circuit.
H5 CHECK THE SCMF (SECOND ROW CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all SCMF connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - if necessary, install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMF connectors. Make sure they are installed and fully seated.
  • Connect all previously disconnected connectors.
  • The ignition is on.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If service information exists for this concern, STOP this test and FOLLOW the service information procedure. If no service information is found, INSTALL a new SCMF.
REFER TO: Second Row Seat Climate Control Module (501-10B Second Row Seats, 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: LEFT-HAND (LH) SEAT HEATER INOPERATIVE - HEATED/VENTILATED SEATS

REFER TO the Wiring Diagrams, Cell 119, for schematic and connector information.

Normal Operation and Fault Symptoms

REFER TO: Second-Row Seats System Operation and Component Description (501-10B Second-Row Seats, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
SCMF B1153:4B Driver Seat Cushion: Overheated Sets when the SCMF detects that the left cushion temperature exceeds 110 °C for more than 4 seconds. When this DTC sets, the SCMF disables the circuit until the ignition is turned off.
SCMF B1156:01 Driver Seat: General Electrical Failure Sets when the SCMF detects that the current draw of the left heating element exceeds the specified threshold. When this DTC sets, the SCMF disables the circuit until the ignition is turned off.
SCMF B1156:11 Driver Seat: Circuit Short to Ground Sets when the SCMF detects that the current draw of the left heating element exceeds the specified threshold. When this DTC sets, the SCMF disables the circuit until the ignition is turned off.
SCMF B1156:12 Driver Seat: Circuit Short to Battery Sets when the SCMF detects that the voltage in the left heater circuit is above the specified threshold while the driver is active. When this DTC sets, the SCMF disables the circuit until the ignition is turned off.
SCMF B1156:1A Driver Seat: Circuit Resistance Below Threshold Sets when the SCMF detects that the current draw of the left heating element exceeds the specified threshold. When this DTC sets, the SCMF disables the circuit until the ignition is turned off.
SCMF B1208:01 Driver Seat Cushion Temperature Sensor: General Electrical Failure Sets when the SCMF detects that the left heater sensor voltage is outside the low or high range. When this DTC sets, the SCMF disables the circuit until the ignition is turned off.
SCMF B1208:11 Driver Seat Cushion Temperature Sensor: Short to Ground Sets when the SCMF detects that the left heater sensor voltage is outside the acceptable range. When this DTC sets, the SCMF disables the circuit until the ignition is turned off.
SCMF B1208:15 Driver Seat Cushion Temperature Sensor: Short to Battery or Open Circuit Sets when the SCMF detects that the left heater sensor voltage is outside the acceptable range. When this DTC sets, the SCMF disables the circuit until the ignition is turned off.

Possible Sources

  • Wiring, Terminals or Connectors
  • Heater Pad
  • HVAC Module
  • SCMF
I1 CHECK THE RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) MODULE SEAT HEATER CONTROL PID (PARAMETER IDENTIFICATION)
  • Start the engine.
  • Using the diagnostic scan tool, monitor the RHVAC module PID CC_SW_D_HSEATS while pressing and releasing the left seat heater control switch.

Does the PID change when the left seat heater control switch is pressed and released?
Yes GO to I2.
No INSTALL a new RHVAC module.
REFER TO: Rear Heating, Ventilation and Air Conditioning (RHVAC) Control Module (412-02 Rear Climate Control, Removal and Installation).
I2 CHECK THE SCMF (REAR SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition OFF.
  • The ignition is on.
  • Using the diagnostic scan tool, perform the SCMF self-test.

Are there any SCMF diagnostic trouble codes (DTCs) present?
Yes For DTC B1156:01, B1156:11, B1156:12 or B1156:1A GO to I5
For DTC B1153:4B, B1208:01, B1208:11 or B1208:15 GO to I7
For information on all other diagnostic trouble codes (DTCs), REFER TO the SCMF DTC Chart.
No GO to I3
I3 CHECK THE HEATED SEAT POWER SUPPLY CIRCUITS FOR AN OPEN
  • Ignition OFF.
  • Disconnect: SCMF C3365C.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365C-2 Ground
    C3365C-5 Ground

Is the voltage greater than 11 volts?
Yes GO to I4
No REPAIR the faulty circuit.
I4 CHECK THE HEATED SEAT GROUND CIRCUITS FOR AN OPEN
  • Ignition OFF.
  • Disconnect: SCMF module C3365B.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365B-4 Ground
    C3365B-5 Ground

Is the resistance less than 3 ohms?
Yes GO to I5
No REPAIR the faulty circuit.
I5 CHECK THE HEATING ELEMENT POWER SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Connect: SCMF C3365B and C3365C.
  • Disconnect: SCMF C3365A and C3365G.
  • Disconnect: Left Rear Seat Cushion Heater C3167.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3167-1 Ground

Is there voltage present?
Yes REPAIR the circuit.
No GO to I6
I6 CHECK THE HEATING ELEMENT POWER SUPPLY CIRCUIT FOR AN OPEN OR A SHORT TO GROUND
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3167-1 Ground
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3167-1 C3365A-5

Is the resistance between the left seat cushion heating mat and ground greater than 10,000 ohms, and less than 3 ohms between the left seat cushion heating mat and the SCMF?
Yes GO to I10
No REPAIR the faulty circuit.
I7 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN OR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect: SCMF C3365A and C3365G.
  • Disconnect: Left Rear Seat Cushion Heater C3167.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3167-2 Ground
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3167-2 C3365G-6

Is the resistance between the left seat cushion heating mat and ground greater than 10,000 ohms, and less than 3 ohms between the left seat cushion heating mat and the SCMF?
Yes GO to I8
No REPAIR the circuit.
I8 CHECK THE HEATED SEAT TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN OR A SHORT TO GROUND
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3167-3 Ground
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3167-3 C3365G-1

Is the resistance between the left seat cushion heating mat and ground greater than 10,000 ohms, and less than 3 ohms between the left seat cushion heating mat and the SCMF?
Yes GO to I9
No REPAIR the open circuit or REFER TO the Wiring Diagrams Manual to identify possible causes of the short circuit.
I9 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3167-2 Ground

Is there voltage present?
Yes REPAIR the circuit.
No GO to I14
I10 CHECK THE HEATING ELEMENT GROUND CIRCUIT FOR AN OPEN
  • Disconnect: Left Rear Seat Back Heater C3372.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3372-2 C3365A-15

Is the resistance less than 3 ohms?
Yes GO to I11
No REPAIR the circuit.
I11 CHECK THE HEATED SEAT MAT FOR AN OPEN OR A SHORT TO GROUND
  • Measure the component side resistance between:
    Positive lead Measurement/Action Negative lead
    C3167-1, component side C3167-4, component side
    C3167-1, component side Ground

Is the resistance between 0.6 and 2 Ohms between pins 1 and 4; and greater than 10,000 Ohms between pin 1 and ground?
Yes GO to I12
No INSTALL a new left seat cushion heating mat.
REFER TO: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
I12 CHECK THE HEATED SEAT MAT FOR AN OPEN OR A SHORT TO GROUND
  • Measure the component side resistance between:
    Positive lead Measurement/Action Negative lead
    C3372-1, component side C3372-2, component side
    C3372-2, component side Ground

Is the resistance between 0.6 and 2 Ohms between pins 1 and 2; and greater than 10,000 Ohms between pin 2 and ground?
Yes GO to I13
No INSTALL a new left seat back heating mat.
REFER TO: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
I13 CHECK THE CIRCUIT BETWEEN THE SEAT CUSHION HEATING MAT AND THE SEAT BACK HEATING MAT FOR AN OPEN AND A SHORT TO GROUND
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3167-4 Ground
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3167-4 C3372-1

Is the resistance between the left seat cushion heating mat and ground greater than 10,000 ohms, and less than 3 ohms between the left seat cushion heating mat and the seat back heating mat?
Yes GO to I15
No REPAIR the circuit.
I14 CHECK THE HEATED SEAT TEMPERATURE SENSOR FOR AN OPEN OR A SHORT TO GROUND
  • Measure the component side resistance between:
    Positive lead Measurement/Action Negative lead
    C3167-2, component side C3167-3, component side
    C3167-2, component side Ground

Is the resistance between 300 and 300,000 Ohms between pins 2 and 3; and greater than 10,000 Ohms between pin 2 and ground?
Yes GO to I15
No INSTALL a new left seat cushion heating mat.
REFER TO: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
I15 CHECK THE SCMF (REAR SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all SCMF connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - if necessary, install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMF connectors. Make sure they are installed and fully seated.
  • Connect all previously disconnected connectors.
  • The ignition is on.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If service information exists for this concern, STOP this test and FOLLOW the service information procedure. If no service information is found, INSTALL a new SCMF.
REFER TO: Second Row Seat Climate Control Module (501-10B Second Row Seats, 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: RIGHT-HAND (RH) SEAT HEATER INOPERATIVE - HEATED/VENTILATED SEATS

REFER TO the Wiring Diagrams, Cell 119, for schematic and connector information.

Normal Operation and Fault Symptoms

REFER TO: Second-Row Seats System Operation and Component Description (501-10B Second-Row Seats, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
SCMF B1151:4B Passenger Seat Cushion: Overheated Sets when the SCMF detects that the right cushion temperature exceeds 110 °C for more than 4 seconds. When this DTC sets, the SCMF disables the circuit until the ignition is turned off.
SCMF B1155:01 Passenger Seat: General Electrical Failure Sets when the SCMF detects that the current draw of the right heating element exceeds the specified threshold. When this DTC sets, the SCMF disables the circuit until the ignition is turned off.
SCMF B1155:11 Passenger Seat: Circuit Short to Ground Sets when the SCMF detects that the current draw of the right heating element exceeds the specified threshold. When this DTC sets, the SCMF disables the circuit until the ignition is turned off.
SCMF B1155:12 Passenger Seat: Circuit Short to Battery Sets when the SCMF detects that the voltage in the right heater circuit is above the specified threshold while the driver is active. When this DTC sets, the SCMF disables the circuit until the ignition is turned off.
SCMF B1155:13 Passenger Seat: Circuit Open Sets when the SCMF detects that the current draw of the right heating element is below the specified threshold. When this DTC sets, the SCMF disables the circuit until the ignition is turned off.
SCMF B1155:1A Passenger Seat: Circuit Resistance Below Threshold Set when the SCMF detects that the current draw of the right heater element exceeds the specified threshold. When this DTC is set, the SCMF disables the circuit until the ignition is turned off.
SCMF B120A:01 Passenger Seat Cushion Temperature Sensor: General Electrical Failure Set when the SCMF detects that the voltage of the right seat heater sensor is outside the low or high range. When this DTC is set, the SCMF disables the circuit until the ignition is turned off.
SCMF B120A:11 Passenger Seat Cushion Temperature Sensor: Short to Ground Set when the SCMF detects that the voltage of the right seat heater sensor is outside the acceptable range. When this DTC is set, the SCMF disables the circuit until the ignition is turned off.
SCMF B120A:15 Passenger Seat Cushion Temperature Sensor: Short to Battery or Open Circuit Set when the SCMF detects that the voltage of the right seat heater sensor is above the acceptable high limit. When this DTC is set, the SCMF disables the circuit until the ignition is turned off.

Possible Sources

  • Wiring, Terminals or Connectors
  • Heater Pad
  • HVAC Module
  • SCMF
J1 CHECK THE RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) MODULE SEAT HEATER CONTROL PID (PARAMETER IDENTIFICATION)
  • Start the engine.
  • Using the diagnostic scanner, monitor the RHVAC module PID CC_SW_P_HSEATS while pressing and releasing the right seat heater control switch.

Does the PID change when the right seat heater control switch is pressed and released?
Yes GO to J2
No INSTALL a new RHVAC module.
REFER TO: Rear Heating, Ventilation and Air Conditioning (RHVAC) Control Module (412-02 Rear Climate Control, Removal and Installation).
J2 CHECK THE SCMF (REAR CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition OFF.
  • The ignition is on.
  • Using the diagnostic scan tool, perform the SCMF self-test.

Are there any SCMF diagnostic trouble codes (DTCs) present?
Yes For DTC B1155:01, B1155:11, B1155:12, B1155:13 or B1155:1A, GO to J5.
For DTC B1151:4B, B120A:01, B120A:11 or B120A:15, GO to J7.
For information on all other diagnostic trouble codes (DTCs), REFER to the SCMF DTC Chart.
No GO to J3
J3 CHECK THE SEAT HEATER VOLTAGE SUPPLY CIRCUITS FOR AN OPEN
  • Ignition OFF.
  • Disconnect: SCMF C3365C.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365C-2 Ground
    C3365C-5 Ground

Is the voltage greater than 11 volts?
Yes GO to J4
No REPAIR the faulty circuit.
J4 CHECK THE SEAT HEATER GROUND CIRCUITS FOR AN OPEN
  • Ignition OFF.
  • Disconnect: SCMF module C3365B.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365B-4 Ground
    C3365B-5 Ground

Is the resistance less than 3 ohms?
Yes GO to J5
No REPAIR the faulty circuit.
J5 CHECK THE HEATER ELEMENT SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Connect: SCMF C3365B and C3365C.
  • Disconnect: SCMF C3365A and C3365G.
  • Disconnect: Rear Right Seat Cushion Heater C3366.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3366-1 Ground

Is there voltage present?
Yes REPAIR the circuit.
No GO to J6
J6 CHECK THE HEATER ELEMENT SUPPLY CIRCUIT FOR AN OPEN OR A SHORT TO GROUND
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3366-1 Ground
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3366-1 C3365A-2

Is the resistance between the right seat cushion heater mat and ground greater than 10,000 ohms, and less than 3 ohms between the right seat cushion heater mat and the SCMF?
Yes GO to J10
No REPAIR the faulty circuit.
J7 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN OR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect: SCMF C3365A and C3365G.
  • Disconnect: Rear Seat Cushion Heater C3366.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3366-2 Ground
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3366-2 C3365G-4

Is the resistance between the right seat cushion heater mat and ground greater than 10,000 ohms, and less than 3 ohms between the right seat cushion heater mat and the SCMF?
Yes GO to J8
No REPAIR the circuit.
J8 CHECK THE SEAT TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN OR A SHORT TO GROUND
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3366-3 Ground
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3366-3 C3365G-2

Is the resistance between the right seat cushion heater mat and ground greater than 10,000 ohms, and less than 3 ohms between the right seat cushion heater mat and the SCMF?
Yes GO to J9
No REPAIR the open circuit or REFER TO the Wiring Diagrams Manual to identify possible causes of the short circuit.
J9 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3366-2 Ground

Is there voltage present?
Yes REPAIR the circuit.
No GO to J14.
J10 CHECK THE HEATER ELEMENT GROUND CIRCUIT FOR AN OPEN
  • Disconnect: Rear Right Seat Back Heater C3365.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365-2 C3365A-10

Is the resistance less than 3 ohms?
Yes GO to J11
No REPAIR the circuit.
J11 CHECK THE HEATED SEAT MAT FOR AN OPEN OR A SHORT TO GROUND
  • Measure the component side resistance between:
    Positive lead Measurement/Action Negative lead
    C3366-1, component side C3366-4, component side
    C3366-1, component side Ground

Is the resistance between 0.6 and 2 Ohms between pins 1 and 4; and greater than 10,000 Ohms between pin 1 and ground?
Yes GO to J12.
No INSTALL a new right seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A, Front Seats, General Procedures).
J12 CHECK THE HEATED SEAT MAT FOR AN OPEN OR A SHORT TO GROUND
  • Measure the component side resistance between:
    Positive lead Measurement/Action Negative lead
    C3365-1, component side C3365-2, component side
    C3365-2, component side Ground

Is the resistance between 0.6 and 2 Ohms between pins 1 and 2; and greater than 10,000 Ohms between pin 2 and ground?
Yes GO to J13.
No INSTALL a new right seat back heater mat.
REFER to: Seat Heater Mat Removal (501-10A, Front Seats, General Procedures).
J13 CHECK THE CIRCUIT BETWEEN THE SEAT CUSHION HEATER MAT AND THE SEAT BACK HEATER MAT FOR AN OPEN AND A SHORT TO GROUND
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3366-4 Ground
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3366-4 C3365-1

Is the resistance between the right seat cushion heater mat and ground greater than 10,000 ohms, and less than 3 ohms between the right seat cushion heater mat and the seat back heater mat?
Yes GO to J15
No REPAIR the circuit.
J14 CHECK THE HEATED SEAT TEMPERATURE SENSOR FOR AN OPEN OR A SHORT TO GROUND
  • Measure the component side resistance between:
    Positive lead Measurement/Action Negative lead
    C3366-2, component side C3366-3, component side
    C3366-2, component side Ground

Is the resistance between 300 and 300,000 Ohms between pins 2 and 3; and greater than 10,000 Ohms between pin 2 and ground?
Yes GO to J15
No INSTALL a new right seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A, Front Seats, General Procedures).
J15 CHECK THE SCMF (REAR CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all SCMF connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - if necessary, install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMF connectors. Make sure they are installed and fully seated.
  • Connect all previously disconnected connectors.
  • The ignition is on.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If service information exists for this concern, STOP this test and FOLLOW the service information procedure. If no service information is found, INSTALL a new SCMF.
REFER TO: Second Row Seat Climate Control Module (501-10B Second Row Seats, 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.
PINPOINT TEST K: BOTH VENTILATED SEATS DO NOT OPERATE

REFER TO the Wiring Diagrams, Cell 119, for schematic and connector information.

Normal Operation and Fault Symptoms

REFER TO: Second-Row Seats System Operation and Component Description (501-10B Second-Row Seats, Description and Operation).

Possible Sources

  • HVAC Module
  • SCMF
K1 CHECK THE SEAT HEATER OPERATION
  • Start the engine.
  • Attempt to activate the seat heater using the RHVAC module switches.

Did the seat heater operate normally?
Yes GO to K2
No CHECK for an inoperative seat heater. GO to Pinpoint Test H.
K2 CHECK THE RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) MODULE SEAT VENTILATION SWITCH PARAMETER IDENTIFICATION (PIDS)
  • Using the diagnostic scanner, monitor the RHVAC module PIDs CC_SW_D_CL_S and CC_SW_P_CL_S while pressing and releasing the left and right seat ventilation control switches.

Do the parameter identifications (PIDs) change when the left and right seat ventilation control switches are pressed and released?
Yes GO to K3
No INSTALL a new RHVAC module.
REFER TO: Rear Heating, Ventilation and Air Conditioning (RHVAC) Control Module (412-02 Rear Climate Control, Removal and Installation).
K3 CHECK THE SCMF (REAR CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all SCMF connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - if necessary, install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMF connectors. Make sure they are installed and fully seated.
  • Connect all previously disconnected connectors.
  • The ignition is on.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If service information exists for this concern, STOP this test and FOLLOW the service information procedure. If no service information is found, INSTALL a new SCMF.
REFER TO: Second Row Seat Climate Control Module (501-10B Second Row Seats, 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.
PINPOINT TEST L: LEFT-HAND (LH) VENTILATED SEAT DOES NOT OPERATE/OPERATES INCORRECTLY

REFER TO the Wiring Diagrams, Cell 119, for schematic and connector information.

Normal Operation and Fault Symptoms

REFER TO: Second-Row Seats System Operation and Component Description (501-10B Second-Row Seats, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
SCMF B14BD:11 Driver Seat Cushion Fan: Short to Ground If the current draw of the left seat cushion fan exceeds the programmed threshold, the SCMF disables the driver seat system and sets this DTC.
SCMF B14BE:11 Driver Seat Back Fan: Circuit Short to Ground If the current draw of the left seat back fan exceeds the programmed threshold, the SCMF disables the driver seat system and sets this DTC.

Possible Sources

  • Wiring, Terminals or Connectors
  • Cushion Fan Motor
  • Seat Back Fan Motor
  • HVAC Module
  • SCMF
L1 CHECK THE LEFT (DRIVER) SEAT HEATER
  • Start the engine.
  • Attempt to activate the left seat heater using the RHVAC module switch.

Does the left seat heater operate correctly?
Yes GO to L2
No CHECK for an inoperative left seat heater. GO to Pinpoint Test I.
L2 CHECK THE RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) MODULE SEAT VENTILATION SWITCH PID (PARAMETER IDENTIFICATION)
  • Start the engine.
  • Using the diagnostic scanner, monitor the RHVAC module PID CC_SW_D_CL_S while pressing and releasing the left seat ventilation control switch.

Does the PID change when the left seat ventilation control switch is pressed and released?
Yes GO to L3
No INSTALL a new RHVAC module.
REFER TO: Rear Heating, Ventilation and Air Conditioning (RHVAC) Control Module (412-02 Rear Climate Control, Removal and Installation).
L3 CHECK THE FAN MOTOR CIRCUITS FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: SCMF C3365A and C3365G.
  • Disconnect: Rear Left Seat Cushion Fan Motor C370.
  • Disconnect: Rear Seat Back Blower Motor, Left C3367.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365A-4 Ground
    C3365A-9 Ground
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365G-9 Ground
    C3365G-10 Ground

Is there voltage present?
Yes REPAIR the faulty circuit.
No GO to L4
L4 CHECK THE BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365A-4 Ground
    C3365A-9 Ground
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365G-9 Ground
    C3365G-10 Ground

Is the resistance greater than 10000 ohms?
Yes GO to L5
No REPAIR the faulty circuit.
L5 CHECK THE BLOWER MOTOR CIRCUITS FOR AN OPEN
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365A-4 C370-1
    C3365A-9 C370-3
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365G-9 C370-2
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365A-4 C3367-1
    C3365A-9 C3367-3
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365G-10 C3367-2

Is the resistance less than 3 ohms?
Yes If only the seatback blower is not operating correctly, INSTALL a new rear seatback blower motor.
REFER TO: Second Row Seat Back Blower Motor (501-10B Second Row Seats, Removal and Installation).
GO to L6.
If only the cushion blower is not operating correctly, INSTALL a new cushion blower motor.
REFER TO: Second Row Seat Cushion Blower Motor (501-10B Second Row Seats, Removal and Installation).
GO to L6.
If both the cushion and seatback blower motors are not operating correctly, GO to L7.
No REPAIR the faulty circuit.
L6 CHECK THE BLOWER MOTOR OPERATION
  • Ignition OFF.
  • Disconnect and inspect all SCMF connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - if necessary, install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMF connectors. Make sure they are installed and fully seated.
  • Connect all previously disconnected connectors.
  • The ignition is on.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If service information exists for this concern, STOP this test and FOLLOW the service information procedure. If no service information is found, INSTALL a new SCMF.
REFER TO: Second Row Seat Climate Control Module (501-10B Second Row Seats, Removal and Installation).
No Repair is complete. RETURN the vehicle to the customer.
L7 CHECK THE SCMF (REAR CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all SCMF connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - if necessary, install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMF connectors. Make sure they are installed and fully seated.
  • Connect all previously disconnected connectors.
  • The ignition is on.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If service information exists for this concern, STOP this test and FOLLOW the service information procedure. If no service information is found, INSTALL a new SCMF.
REFER TO: Second Row Seat Climate Control Module (501-10B Second Row Seats, 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.
PINPOINT TEST M: RIGHT-HAND (RH) VENTILATED SEAT DOES NOT OPERATE/OPERATES INCORRECTLY

REFER TO the Wiring Diagrams, Cell 119, for schematic and connector information.

Normal Operation and Fault Symptoms

REFER TO: Second-Row Seats System Operation and Component Description (501-10B Second-Row Seats, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
SCMF B14C0:11 Passenger Seat Cushion Fan: Short to Ground If the current supplied to the right seat cushion blower exceeds the programmed threshold, the SCME disables the driver seat system and sets this DTC.
SCMF B14C2:11 Passenger Seat Back Fan: Circuit Short to Ground If the current supplied to the right seatback blower exceeds the programmed threshold, the SCME disables the driver seat system and sets this DTC.

Possible Sources

  • Wiring, Terminals or Connectors
  • Cushion Fan Motor
  • Seat Back Fan Motor
  • HVAC Module
  • SCMF
M1 CHECK THE RIGHT (PASSENGER) HEATED SEAT OPERATION
  • Start the engine.
  • Attempt to activate the right heated seat using the RHVAC module button.

Does the right heated seat operate correctly?
Yes GO to M2
No CHECK the non-operating right heated seat. GO to Pinpoint Test J.
M2 CHECK THE RHVAC (HEATED, VENTILATED AND AIR CONDITIONED SEAT) MODULE VENTILATED SEAT SWITCH PID (PARAMETER IDENTIFICATION)
  • Start the engine.
  • Using the diagnostic scan tool, monitor the RHVAC module PID CC_SW_P_CL_S while pressing and releasing the right ventilated seat control switch.

Does the PID change when the right ventilated seat control switch is pressed and released?
Yes GO to M3
No INSTALL a new RHVAC module.
REFER TO: Rear Heating, Ventilation and Air Conditioning (RHVAC) Control Module (412-02 Rear Climate Control, Removal and Installation).
M3 CHECK THE BLOWER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: SCMF C3365A and C3365G.
  • Disconnect: Rear Seat Cushion Blower Motor, Right C376.
  • Disconnect: Rear Seat Back Blower Motor, Right C3364.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365A-3 Ground
    C3365A-11 Ground
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365G-7 Ground
    C3365G-8 Ground

Is there voltage present?
Yes REPAIR the faulty circuit.
No GO to M4
M4 CHECK THE BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365A-3 Ground
    C3365A-11 Ground
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365G-7 Ground
    C3365G-8 Ground

Is the resistance greater than 10000 ohms?
Yes GO to M5
No REPAIR the faulty circuit.
M5 CHECK THE BLOWER MOTOR CIRCUITS FOR AN OPEN
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365A-3 C376-1
    C3365A-11 C376-3
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365G-7 C376-2
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365A-3 C3364-1
    C3365A-11 C3364-3
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3365G-8 C3364-2

Is the resistance less than 3 ohms?
Yes If only the seatback blower is not operating correctly, INSTALL a new rear seatback blower motor.
REFER TO: Second Row Seat Back Blower Motor (501-10B Second Row Seats, Removal and Installation).
GO to M6.
If only the cushion blower is not operating correctly, INSTALL a new cushion blower motor.
REFER TO: Second Row Seat Cushion Blower Motor (501-10B Second Row Seats, Removal and Installation).
GO to M6.
If both the cushion and seatback blower motors are not operating correctly, GO to M7.
No REPAIR the faulty circuit.
M6 CHECK THE BLOWER MOTOR OPERATION
  • Ignition OFF.
  • Disconnect and inspect all SCMF connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - if necessary, install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMF connectors. Make sure they are installed and fully seated.
  • Connect all previously disconnected connectors.
  • The ignition is on.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If service information exists for this concern, STOP this test and FOLLOW the service information procedure. If no service information is found, INSTALL a new SCMF.
REFER TO: Second Row Seat Climate Control Module (501-10B Second Row Seats, Removal and Installation).
No Repair is complete. RETURN the vehicle to the customer.
M7 CHECK THE SCMF (REAR CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all SCMF connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - if necessary, install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMF connectors. Make sure they are installed and fully seated.
  • Connect all previously disconnected connectors.
  • The ignition is on.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If service information exists for this concern, STOP this test and FOLLOW the service information procedure. If no service information is found, INSTALL a new SCMF.
REFER TO: Second Row Seat Climate Control Module (501-10B Second Row Seats, 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.
PINPOINT TEST N: LEFT-HAND (LH) EASY ENTRY POWER SEAT DOES NOT OPERATE

For circuit and connector information, refer to Cell 120 in the Wiring Diagrams.

Normal Operation and Fault Symptoms

REFER TO: Second-Row Seats System Operation and Component Description (501-10B Second-Row Seats, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
SCMJ B137A:11 Left Input Output: Circuit Short to Ground This DTC sets when the left second row Easy Entry seat actuator output circuit is shorted to ground.
SCMJ B137A:15 Left Input Output: Circuit Short to Battery or Open This DTC sets when the left second row Easy Entry seat actuator output circuit is shorted to voltage or open.
SCMJ B1546:23 Left Input Switch: Signal Level Low This DTC sets when the left second row Easy Entry seat fold switch input circuit is shorted to ground.

Possible Sources

  • Interior Lighting System Concern
  • Wiring, Terminals or Connectors
  • Second-Row Easy-Entry Power Disconnect Cable
  • Second Row Single Seat Easy Entry Fold Switch
  • Second-Row Easy-Entry Actuator
  • Seat Frame Assembly
  • SCMJ
N1 CHECK THE DOOR JAMB SWITCH OPERATION
  • Open and close the left rear passenger door. Verify the interior lamp illuminates when the door is open and turns off when the door is closed.

Did the interior lamp operate correctly?
Yes GO to N2
No CHECK the interior lighting system.
REFER TO: Interior Lighting (417-02 Interior Lighting, Diagnosis and Testing).
N2 CHECK THE LEFT (DRIVER) SIDE SECOND ROW SINGLE SEAT EASY ENTRY SEAT FOLD SWITCH OPERATION
  • Ignition OFF.
  • Disconnect: SCMJ C4250C.
  • While pressing and releasing the left second row single seat Easy Entry fold switch, measure:
    Press to display connectors
    Positive lead Measurement/Action Negative lead
    C4250C-6 Ground

Is the resistance less than 10 ohms with the switch pressed and greater than 10,000 ohms when not pressed?
Yes GO to N5
No GO to N3
N3 CHECK THE LEFT (DRIVER) SIDE SECOND ROW SINGLE SEAT EASY ENTRY SEAT FOLD SWITCH CIRCUIT FOR A SHORT TO GROUND
  • Disconnect: Left Second Row Seat Fold Switch C3343.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3343-2 Ground

Is the resistance less than 3 ohms?
Yes GO to N4
No REPAIR the circuit.
N4 CHECK THE LEFT (DRIVER) SIDE SECOND ROW SINGLE SEAT EASY ENTRY SEAT FOLD SWITCH CIRCUIT FOR AN OPEN OR A SHORT TO GROUND
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3343-6 Ground
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3343-6 C4250C-2

Is the resistance greater than 10,000 ohms between the left second row seat fold switch and ground, and less than 3 ohms between the left second row seat fold switch and SCMJ?
Yes INSTALL a new left second row single seat Easy Entry fold switch.
REFER TO: Second Row Single Seat Fold Switch (501-10B Second Row Seats, Removal and Installation).
No REPAIR the circuit.
N5 CHECK THE LEFT (DRIVER) SIDE SECOND ROW EASY ENTRY POWER RELEASE CIRCUIT FOR A GROUND
  • Disconnect: Left Second Row Easy Entry Actuator C3345.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3345-1 Ground

Is the resistance less than 3 ohms?
Yes GO to N6
No REPAIR the circuit.
N6 CHECK THE LEFT (DRIVER) SIDE SECOND ROW EASY ENTRY POWER RELEASE ACTUATOR OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
  • Disconnect: SCMJ C4250A.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C4250A-1 Ground

Is there voltage present?
Yes REPAIR the circuit.
No GO to N7
N7 CHECK THE LEFT (DRIVER) SIDE SECOND ROW EASY ENTRY POWER RELEASE ACTUATOR OUTPUT CIRCUIT FOR AN OPEN OR A SHORT TO GROUND
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C4250A-1 Ground
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C4250A-1 C3345-2

Is the resistance greater than 10,000 ohms between SCMJ and ground, and less than 3 ohms between SCMJ and the left second row Easy Entry actuator?
Yes GO to N8
No REPAIR the circuit.
N8 CHECK LEFT (LH) SECOND ROW EASY ENTRY POWER RELEASE ACTUATOR WITH JUMPER WIRE INSTALLED JUMPER WIRE WITH FUSE
  • Ignition OFF.
  • Connect: Left second row Easy Entry actuator C3345.
  • Momentarily connect a fused jumper wire:
    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C4250A-10 C4250A-1

Did the seat operate correctly with the jumper wire connected?
Yes GO to N10
No GO to N9
N9 CHECK LEFT (LH) SECOND ROW EASY ENTRY POWER RELEASE CABLE AND LATCH RELEASE MECHANISM FOR DAMAGE
  • Ignition OFF.
  • Check the cables and cable attachments for disconnection.
  • Check the latch release mechanism and latch striker for binding or damage.

Were any problems found with the second row Easy Entry cable and/or the latch mechanism?
Yes If any cable problems exist, INSTALL a new left second row Easy Entry cable.
REFER TO: Second Row Easy Entry Cable (501-10B Second Row Seats, Removal and Installation). If the latch release mechanism is faulty, REPAIR or INSTALL a new seat frame assembly as necessary.
No INSTALL a new left second row Easy Entry actuator.
REFER TO: Second Row Easy Entry Release Actuator (501-10B Second Row Seats, Removal and Installation).
N10 CHECK SCMJ (SEAT FOLD ACTUATOR MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the SCMJ connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - if necessary, install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMJ connector. Make sure it is properly seated and latched.
  • Connect all previously disconnected connectors.
  • The ignition is on.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If a service document exists for this condition, STOP this test and FOLLOW the service document instructions. If no service documents apply, INSTALL a new SCMJ.
REFER to: Power Folding Seat Module [SCMJ] (501-10C Third Row Seats, 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.
PINPOINT TEST O: RIGHT-HAND (RH) EASY ENTRY POWER SEAT DOES NOT OPERATE

For circuit and connector information, refer to Cell 120 in the Wiring Diagrams.

Normal Operation and Fault Symptoms

REFER TO: Second-Row Seats System Operation and Component Description (501-10B Second-Row Seats, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
SCMJ B137B: 11 Right Input Output: Circuit Short to Ground This DTC sets when the right second row Easy Entry actuator output circuit is shorted to ground.
SCMJ B137B: 15 Right Input Output: Circuit Short to Battery or Open This DTC sets when the right second row Easy Entry actuator output circuit is shorted to battery voltage or open.
SCMJ B1547:23 Right Input Switch: Signal Level Low This DTC sets when the right second row single seat fold switch input circuit is shorted to ground.

Possible Sources

  • Interior Lighting System Concern
  • Wiring, Terminals or Connectors
  • Second-Row Easy-Entry Power Disconnect Cable
  • Second Row Single Seat Easy Entry Fold Switch
  • Second-Row Easy-Entry Actuator
  • Seat Frame Assembly
  • SCMJ
O1 CHECK DOOR AJAR SWITCH OPERATION
  • Open and close the right rear passenger door. Make sure the interior lamp turns on when the door is open and turns off when the door is closed.

Did the interior lamp operate correctly?
Yes GO to O2
No CHECK the interior lighting system.
REFER TO: Interior Lighting (417-02 Interior Lighting, Diagnosis and Testing).
O2 CHECK RIGHT (RH) SECOND ROW SINGLE SEAT EASY ENTRY SEAT FOLD SWITCH OPERATION
  • Ignition OFF.
  • Disconnect: SCMJ C4250C.
  • While pressing and releasing the right second row single seat fold switch, measure:
    Press to display connectors
    Positive lead Measurement/Action Negative lead
    C4250C-3 Ground

Is the resistance less than 10 ohms with the switch pressed and greater than 10,000 ohms when not pressed?
Yes GO to O5
No GO to O3
O3 CHECK RIGHT (RH) SECOND ROW SINGLE SEAT EASY ENTRY SEAT FOLD SWITCH CIRCUIT GROUND FOR OPEN
  • Disconnect: Right second row Easy Entry seat fold switch C3344.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3344-2 Ground

Is the resistance less than 3 ohms?
Yes GO to O4
No REPAIR the circuit.
O4 CHECK RIGHT (RH) SECOND ROW SINGLE SEAT EASY ENTRY SEAT FOLD SWITCH CIRCUIT FOR OPEN OR SHORT TO GROUND
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3344-6 Ground
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3344-6 C4250C-3

Is the resistance greater than 10,000 ohms between the right second row single seat fold switch and ground, and less than 3 ohms between the right second row single seat fold switch and SCMJ?
Yes INSTALL a new right second row single seat fold switch.
REFER TO: Second Row Single Seat Fold Switch (501-10B Second Row Seats, Removal and Installation).
No REPAIR the circuit.
O5 CHECK RIGHT (RH) SECOND ROW EASY ENTRY POWER RELEASE CIRCUIT GROUND FOR OPEN
  • Disconnect: Right second row Easy Entry release actuator C3346.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C3346-1 Ground

Is the resistance less than 3 ohms?
Yes GO to O6
No REPAIR the circuit.
O6 CHECK RIGHT (RH) SECOND ROW EASY ENTRY POWER RELEASE ACTUATOR OUTPUT CIRCUIT FOR SHORT TO VOLTAGE
  • Disconnect: SCMJ C4250A.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C4250A-2 Ground

Is there voltage present?
Yes REPAIR the circuit.
No GO to O7
O7 CHECK RIGHT (RH) SECOND ROW EASY ENTRY POWER RELEASE ACTUATOR OUTPUT CIRCUIT FOR OPEN OR SHORT TO GROUND
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C4250A-2 Ground
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C4250A-2 C3346-2

Is the resistance greater than 10,000 ohms between SCMJ and ground, and less than 3 ohms between SCMJ and the right second row Easy Entry release actuator?
Yes GO to O8
No REPAIR the circuit.
O8 CHECK RIGHT (RH) SECOND ROW EASY ENTRY POWER RELEASE ACTUATOR WITH JUMPER WIRE INSTALLED JUMPER WIRE WITH FUSE
  • Ignition OFF.
  • Connect: Right second row Easy Entry release actuator C3346.
  • Momentarily connect a fused jumper wire:
    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C4250A-10 C4250A-2

Did the seat operate correctly with the jumper wire connected?
Yes GO to O10.
No GO to O9.
O9 CHECK RIGHT (RH) SECOND ROW EASY ENTRY POWER RELEASE CABLE AND LATCH RELEASE MECHANISM FOR DAMAGE
  • Ignition OFF.
  • Check the cables and cable attachments for disconnection.
  • Check the latch release mechanism and latch striker for binding or damage.

Were any problems found with the second row Easy Entry cable and/or the latch mechanism?
Yes If any cable problems exist, INSTALL a new right second row Easy Entry cable.
REFER TO: Second Row Easy Entry Cable (501-10B Second Row Seats, Removal and Installation). If the latch release mechanism is faulty, REPAIR or INSTALL a new seat frame assembly as necessary.
No INSTALL a new right second row Easy Entry release actuator.
REFER TO: Second Row Easy Entry Release Actuator (501-10B Second Row Seats, Removal and Installation).
O10 CHECK SCMJ (SEAT FOLD ACTUATOR MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the SCMJ connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - if necessary, install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMJ connector. Make sure it is properly seated and latched.
  • Connect all previously disconnected connectors.
  • The ignition is on.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If a service document exists for this condition, STOP this test and FOLLOW the service document instructions. If no service documents apply, INSTALL a new SCMJ.
REFER to: Power Folding Seat Module [SCMJ] (501-10C Third Row Seats, 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.
PINPOINT TEST P: DTC: U0140:00

For circuit and connector information, refer to Wiring Diagrams Cell 14.

Normal Operation and Fault Symptoms

SCMF and BCM communicate via MS-CAN.

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
SCMF U0140:00 Lost Communication With Body Control Module: No Sub Type Information The SCMF sets whenever it loses communication with the BCM for 5 seconds or longer while SCMF input voltage is between 10 and 15.5 volts.

Possible Sources

  • Communication Module
  • SCMF
  • BCM
P1 VERIFY CUSTOMER CONCERN
  • The ignition is on.
  • Make sure the observed symptom is present.

Is the observed symptom present?
Yes GO to P2
No The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent condition.
P2 CHECK THE NETWORK COMMUNICATION
  • The ignition is on.
  • Using a scan tool, perform the network test.

Does the BCM pass the network test?
Yes GO to P3
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
P3 RECHECK SCMF (REAR SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCMF self-test.

Is DTC U0140:00 still present?
Yes GO to P4
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
P4 CHECK FOR DTC U0140:00 IN OTHER MODULES
  • Using the scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • The ignition is on.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0140:00 set in any other modules?
Yes INSTALL a new BCM.
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No INSTALL a new SCMF.
REFER TO: Second Row Climate Control Seat Module (501-10B Second Row Seats, Removal and Installation).
PINPOINT TEST Q: DTC: U0257:00

For circuit and connector information, refer to Wiring Diagrams Cell 14.

Normal Operation and Fault Symptoms

SCMF and RHVAC module communicate via MS-CAN.

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
SCMF U0257:00 Lost Communication With Front Controls Interface Module/Display: No Sub Type Information The SCMF sets when communication with the RHVAC module is lost while SCMF input voltage is between 10 and 15.5 volts.

Possible Sources

  • Communication Module
  • HVAC Module
  • SCMF
Q1 VERIFY CUSTOMER CONCERN
  • The ignition is on.
  • Make sure the observed symptom is present.

Is the observed symptom present?
Yes GO to Q2
No The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent condition.
Q2 CHECK COMMUNICATION NETWORK
  • The ignition is on.
  • Using a scan tool, perform the network test.

Does the RHVAC module pass the network test?
Yes GO to Q3
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
Q3 RECHECK SCMF (REAR SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Using a diagnostic scan tool, repeat the SCMF self-test.

Is DTC U0257:00 still present?
Yes GO to Q4
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
Q4 CHECK FOR DTC U0257:00 IN OTHER MODULES
  • Using the scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • The ignition is on.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0140:00 set in any other modules?
Yes INSTALL a new RHVAC module.
REFER TO: Rear Heating, Ventilation and Air Conditioning (RHVAC) Control Module (412-02 Rear Climate Control, Removal and Installation).
No INSTALL a new SCMF.
REFER TO: Second Row Climate Control Seat Module (501-10B Second Row Seats, Removal and Installation).
PINPOINT TEST R : DTC: U1000:00

REFER TO the Wiring Diagrams, Cell 119, for schematic and connector information.

Normal Operation and Fault Symptoms

First, CHECK for any other SCMF diagnostic trouble codes (DTCs). CLEAR the diagnostic trouble codes (DTCs). REPEAT the self-test. If DTC U1000:00 returns, INSTALL a new SCMF. REFER TO: Second-Row Seat Climate Control Module (501-10B Second-Row Seats, Removal and Installation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
SCMF U1000:00 Solid State Driver Protection Active - Driver Disabled: No Sub Type Information This DTC indicates an internal module fault. The module must be replaced.

Possible Sources

  • SCMF
No diagnostic actions are available for this symptom or DTC. Refer to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST S: DTC: U2100:00

REFER TO the Wiring Diagrams, Cell 119, for schematic and connector information.

Normal Operation and Fault Symptoms

Using the diagnostic scan tool, PERFORM a PMI on the SCMF. REPEAT the self-test and CHECK for a successful PMI. CLEAR the diagnostic trouble codes (DTCs).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
SCMF (21:00) Initial Configuration Not Complete: No Sub Type Information This DTC indicates that the PMI was not performed on a newly installed module, or the configuration data was lost.

Possible Sources

  • The PMI was not performed on a newly installed module, or the configuration data was lost.
No diagnostic actions are available for this symptom or DTC. Refer to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST T: DTC: U3000:49

REFER TO the Wiring Diagrams, Cell 119, for schematic and connector information.

Normal Operation and Fault Symptoms

INSTALL a new SCMF. REFER TO: Second-Row Seat Climate Control Module (501-10B Second-Row Seats, Removal and Installation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
SCMF U3000:49 Control Module: Internal Electronic Failure This DTC indicates an internal module fault. The module must be replaced.

Possible Sources

  • SCMF
No diagnostic actions are available for this symptom or DTC. Refer to: Diagnostic Methods (100-00 General Information, Description and Operation).

Test yourself

A quick Ford Explorer quiz: every answer comes with an explanation and a link to the manual page.