Ford Explorer: Second Row Seats / Diagnosis and Testing - Second Row Seats

Ford Explorer 2020-2022 Service Manual / Body and Paint / Body and Paint / Second Row Seats / Diagnosis and Testing - Second Row Seats

Diagnostic Trouble Code (DTC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  Diagnostic Trouble Code Chart


Module   DTC Description Action
  SCMF B1151:4B Passenger Seat Cushion: Over Temperature   GO to Pinpoint Test J
  SCMF B1153:4B Driver Seat Cushion: Over Temperature   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: Circuit Short To Ground   GO to Pinpoint Test I
  SCMF B1208:15 Driver Seat Cushion Temperature Sensor: Circuit Short To Battery Or Open   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: Circuit Short To Ground   GO to Pinpoint Test J
  SCMF B120A:15 Passenger Seat Cushion Temperature Sensor: Circuit Short To Battery Or Open   GO to Pinpoint Test J
  SCMF B14BD:11 Driver Seat Cushion Blower: Circuit Short To Ground   GO to Pinpoint Test L
  SCMF B14BE:11 Driver Seat Back Blower: Circuit Short To Ground   GO to Pinpoint Test L
  SCMF B14C0:11 Passenger Seat Cushion Blower: Circuit Short To Ground   GO to Pinpoint Test M
  SCMF B14C2:11 Passenger Seat Back Blower: 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 Lost Communication with Front Controls / 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 Entry Output: Circuit Short To Ground   GO to Pinpoint Test N
  SCMJ B137A:15 Left Entry Output: Circuit Short To Battery Or Open   GO to Pinpoint Test N
  SCMJ B137B:11 Right Entry Output: Circuit Short To Ground   GO to Pinpoint Test O
  SCMJ B137B:15 Right Entry Output: Circuit Short To Battery Or Open   GO to Pinpoint Test O
  SCMJ B1546:23 Left Entry Switch: Signal Stuck Low   GO to Pinpoint Test N
  SCMJ B1547:23 Right Entry Switch: Signal Stuck Low   GO to Pinpoint Test O

Symptom Chart(s)

Symptom Chart: Second Row Seats

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  Symptom Chart


Condition Possible Sources Actions
No communication with the SCMF
  • Refer to the Pinpoint Test

  • REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
No communication with the SCMJ
  • Refer to the Pinpoint Test

  • REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
Both heated rear seats are inoperative - without heated/ventilated seats
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test A
The LH heated rear seat is inoperative - without heated/ventilated seats
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test B
The RH heated rear seat is inoperative - without heated/ventilated seats
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test C
The LH heated rear seat heats correctly but the indicator does not illuminate when activated - without heated/ventilated seats
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test D
The RH heated rear seat heats correctly but the indicator does not illuminate when activated - without heated/ventilated seats
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test E
The LH heated rear seat indicator is always on - without heated/ventilated seats
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test F
The RH heated rear seat indicator is always on - without heated/ventilated seats
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test G
Both heated seats are inoperative — with heated/ventilated seats
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test H
The LH heated seat is inoperative/does not operate correctly — with heated/ventilated seats
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test I
The RH heated seat is inoperative/does not operate correctly — with heated/ventilated seats
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test J
Both ventilated seats are inoperative
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test K
The LH ventilated seat is inoperative/does not operate correctly
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test L
The RH ventilated seat is inoperative/does not operate correctly
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test M
The LH power easy entry seat is inoperative
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test N
The RH power easy entry seat is inoperative
  • Refer to the Pinpoint Test
  • GO to Pinpoint Test O

Pinpoint Tests


PINPOINT TEST A : BOTH HEATED REAR SEATS ARE INOPERATIVE - WITHOUT HEATED/VENTILATED SEATS

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

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
  • Heated seat module

Visual Inspection and Pre-checks

  • Verify BJB fuse 118 (30A) is OK.
A1 CHECK FOR VOLTAGE TO THE HEATED REAR SEAT MODULE
  • Ignition OFF.
  • Disconnect Heated Rear Seat Module C3183B .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183B-1   Ground
      C3183B-2   Ground

Are the voltages greater than 11 volts?
Yes GO to A2
No VERIFY BJB fuse 118 (30A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

A2 CHECK THE HEATED REAR SEAT MODULE GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:
    Click to display 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 VERIFY THE HEATED REAR SEAT SWITCH IS PROVIDING A GROUND INPUT SIGNAL TO THE HEATED SEAT MODULE
  • Disconnect Heated Rear Seat Module C3183A .
  • While pressing and releasing the LH heated rear seat switch, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183A-2   Ground

Is the resistance less than 3 ohms when the switch is pressed and greater than 10,000 ohms when released?
Yes GO to A5
No GO to A4

A4 CHECK THE HEATED REAR SEAT SWITCH GROUND CIRCUIT FOR AN OPEN
  • Disconnect RHVAC Module C3198 .
  • Measure:
    Click to display 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 SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183A-3   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to A6

A6 CHECK THE TEMPERATURE SENSOR CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183A-3   C3183A-12

Is the resistance between 300 and 300K ohms?
Yes INSTALL a new heated rear seat module.
REFER to: Heated Second Row Seat Module (501-10B Second Row Seats, Removal and Installation).
No REPAIR the circuit.

PINPOINT TEST B : THE LH (LEFT-HAND) HEATED REAR SEAT IS INOPERATIVE - WITHOUT HEATED/VENTILATED SEATS

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

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

Possible Sources

  • Wiring, terminals or connectors
  • RHVAC module
  • Heater mat
  • Heated seat module
B1 CHECK THE HEATED SEAT SWITCH INPUT
  • Ignition OFF.
  • Disconnect Heated Rear Seat Module C3183A .
  • While pressing and releasing the LH heated rear seat switch, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183A-2   Ground

Is the resistance less than 3 ohms when the switch is pressed and greater than 10,000 ohms when released?
Yes GO to B3
No GO to B2

B2 CHECK THE HEATED SEAT SWITCH CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Disconnect RHVAC Module C3198 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3198-9   C3183A-2
      C3198-9   Ground

Are the resistances less than 3 ohms between the RHVAC module and heated seat module, 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 FOR VOLTAGE TO THE HEATED SEAT MODULE
  • Disconnect Heated Rear Seat Module C3183B .
  • Measure:
    Click to display 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 AN OPEN
  • Measure:
    Click to display 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 AN OPEN
  • Disconnect LH Rear Backrest Heater Mat C3360 .
  • Measure:
    Click to display 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 AN OPEN OR SHORT TO GROUND
  • Disconnect LH Rear Cushion Heater Mat C3167 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183B-4   C3167-1
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183B-4 Ground

Are the resistances less than 3 ohms between the heated seat module and the LH rear cushion heater mat, and greater than 10,000 ohms between the heated seat module and ground?
Yes GO to B7
No REPAIR the circuit.

B7 CHECK THE CUSHION HEATER MAT FOR AN 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 (501-10A Front Seats, General Procedures).

B8 CHECK FOR AN OPEN OR A SHORT TO GROUND BETWEEN THE HEATER MATS
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3167-4   C3360-1
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3167-4 Ground

Are the resistances less than 3 ohms between the cushion heater mat and backrest heater mat, and greater than 10,000 ohms between cushion heater mat and ground?
Yes INSTALL a new backrest heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
No REPAIR the circuit.

B9 CHECK THE TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183A-3 Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to B10

B10 CHECK THE TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183A-3 Ground

Is the resistance greater than 10,000 ohms?
Yes GO to B11
No REPAIR the circuit.

B11 CHECK THE TEMPERATURE SENSOR AND CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183A-3   C3183A-12

Is the resistance between 300 and 300K ohms?
Yes INSTALL a new heated rear seat module.
REFER to: Heated Second Row Seat Module (501-10B Second Row Seats, Removal and Installation).
No GO to B12

B12 CHECK THE TEMPERATURE SENSOR FOR AN OPEN WITH THE HEATER MAT DISCONNECTED
  • Disconnect LH Rear Cushion Heater Mat C3167 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183A-3   C3167-2
      C3183A-12   C3167-3

Are the resistances less than 3 ohms?
Yes INSTALL a new cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
No REPAIR the circuit in question.

PINPOINT TEST C : THE RH (RIGHT-HAND) HEATED REAR SEAT IS INOPERATIVE - WITHOUT HEATED/VENTILATED SEATS

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

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

Possible Sources

  • Wiring, terminals or connectors
  • RHVAC module
  • Heated seat module
C1 CHECK THE HEATED SEAT SWITCH INPUT
  • Ignition OFF.
  • Disconnect Heated Rear Seat Module C3183A .
  • While pressing and releasing the RH heated rear seat switch, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183A-8   Ground

Is the resistance less than 3 ohms when the switch is pressed and greater than 10,000 ohms when released?
Yes GO to C3
No GO to C2

C2 CHECK THE HEATED SEAT SWITCH CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Disconnect RHVAC Module C3198 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3198-10   C3183A-8
      C3198-10   Ground

Are the resistances less than 3 ohms between the RHVAC module and heated rear seat module, 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 FOR VOLTAGE TO THE HEATED SEAT MODULE
  • Disconnect Heated Rear Seat Module C3183B .
  • Measure:
    Click to display 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 AN OPEN
  • Measure:
    Click to display 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 AN OPEN
  • Disconnect RH Rear Backrest Heater Mat C3362 .
  • Measure:
    Click to display 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 AN OPEN OR SHORT TO GROUND
  • Disconnect RH Rear Cushion Heater Mat C3363 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183B-6   C3363-1
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183B-6 Ground

Are the resistances less than 3 ohms between the heated rear seat module and rear seat cushion heater mat, and greater than 10,000 ohms between the heated rear seat module and ground?
Yes GO to C7
No REPAIR the circuit.

C7 CHECK THE CUSHION HEATER MAT FOR AN 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 (501-10A Front Seats, General Procedures).

C8 CHECK FOR AN OPEN OR A SHORT TO GROUND BETWEEN THE HEATER MATS
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3363-4   C3362-1
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3363-4 Ground

Are the resistances less than 3 ohms between the cushion heater mat and backrest heater mat, and greater than 10,000 ohms between the cushion heater mat and ground?
Yes INSTALL a new backrest heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
No REPAIR the circuit.

C9 CHECK THE TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183A-9 Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to C10

C10 CHECK THE TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183A-9 Ground

Is the resistance greater than 10,000 ohms?
Yes GO to C11
No REPAIR the circuit.

C11 CHECK THE TEMPERATURE SENSOR AND CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183A-9   C3183A-12

Is the resistance between 300 and 300K ohms?
Yes INSTALL a new heated rear seat module.
REFER to: Heated Second Row Seat Module (501-10B Second Row Seats, Removal and Installation).
No GO to C12

C12 CHECK THE TEMPERATURE SENSOR FOR AN OPEN WITH THE HEATER MAT DISCONNECTED
  • Disconnect RH Rear Cushion Heater Mat C3363 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183A-9   C3363-2
      C3183A-12   C3363-3

Are the resistances less than 3 ohms?
Yes INSTALL a new cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).
No REPAIR the circuit in question.

PINPOINT TEST D : THE LH (LEFT-HAND) HEATED REAR SEAT HEATS CORRECTLY BUT THE INDICATOR DOES NOT ILLUMINATE WHEN ACTIVATED - WITHOUT HEATED/VENTILATED SEATS

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

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

Possible Sources

  • Wiring, terminals or connectors
  • RHVAC module
  • Heated seat module

Visual Inspection and Pre-checks

  • Inspect for a damaged heated rear seat switch.
D1 CHECK THE HEATED SEAT INDICATOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect Heated Rear Seat Module C3183A .
  • Disconnect RHVAC Module C3198 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183A-4 Ground
      C3183A-5 Ground

Are the resistances greater than 10,000 ohms?
Yes GO to D2
No REPAIR the circuit in question.

D2 CHECK THE HEATED SEAT INDICATOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183A-4   C3198-3
      C3183A-5   C3198-7

Are the resistances less than 3 ohms?
Yes GO to D3
No REPAIR the circuit in question.

D3 CHECK THE HIGH HEAT INDICATOR
  • Disconnect Heated Rear Seat Module C3183B .
  • Connect RHVAC Module C3198 .
  • Connect:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183A-5   C3183B-1

Does the high heat indicator illuminate?
Yes REMOVE the fused jumper wire. GO to D4
No REMOVE the fused jumper wire. INSTALL a new RHVAC module.
REFER to: Rear Heating, Ventilation and Air Conditioning (RHVAC) Control Module (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

Does the low heat indicator illuminate?
Yes REMOVE the fused jumper wire. INSTALL a new heated rear seat module.
REFER to: Heated Second Row Seat Module (501-10B Second Row Seats, Removal and Installation).
No REMOVE the fused jumper wire. INSTALL a new RHVAC module.
REFER to: Rear Heating, Ventilation and Air Conditioning (RHVAC) Control Module (412-02 Rear Climate Control, Removal and Installation).

PINPOINT TEST E : THE RH (RIGHT-HAND) HEATED REAR SEAT HEATS CORRECTLY BUT THE INDICATOR DOES NOT ILLUMINATE WHEN ACTIVATED - WITHOUT HEATED/VENTILATED SEATS

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

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

Possible Sources

  • Wiring, terminals or connectors
  • RHVAC module
  • Heated seat module

Visual Inspection and Pre-checks

  • Inspect for a damaged heated rear seat switch.
E1 CHECK THE HEATED SEAT INDICATOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect Heated Rear Seat Module C3183A .
  • Disconnect RHVAC Module C3198 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183A-10 Ground
      C3183A-11 Ground

Are the resistances greater than 10,000 ohms?
Yes GO to E2
No REPAIR the circuit in question.

E2 CHECK THE HEATED SEAT INDICATOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183A-10   C3198-4
      C3183A-11   C3198-8

Are the resistances less than 3 ohms?
Yes GO to E3
No REPAIR the circuit in question.

E3 CHECK THE HIGH HEAT INDICATOR
  • Disconnect Heated Rear Seat Module C3183B .
  • Connect RHVAC Module C3198 .
  • Connect:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3183A-11   C3183B-3

Does the high heat indicator illuminate?
Yes REMOVE the fused jumper wire. GO to E4
No REMOVE the fused jumper wire. INSTALL a new RHVAC module.
REFER to: Rear Heating, Ventilation and Air Conditioning (RHVAC) Control Module (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

Does the low heat indicator illuminate?
Yes REMOVE the fused jumper wire. INSTALL a new heated rear seat module.
REFER to: Heated Second Row Seat Module (501-10B Second Row Seats, Removal and Installation).
No REMOVE the fused jumper wire. INSTALL a new RHVAC module.
REFER to: Rear Heating, Ventilation and Air Conditioning (RHVAC) Control Module (412-02 Rear Climate Control, Removal and Installation).

PINPOINT TEST F : THE LH (LEFT-HAND) HEATED REAR SEAT INDICATOR IS ALWAYS ON - WITHOUT HEATED/VENTILATED SEATS

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

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

Possible Sources

  • Wiring, terminals or connectors
  • Heated seat module
F1 CHECK FOR A SHORT TO VOLTAGE IN THE LH (LEFT-HAND) HEATED REAR SEAT SWITCH INDICATOR CIRCUIT
  • Ignition OFF.
  • Disconnect: Heated Rear Seat Module C3183A.
  • Ignition ON.

Is the LH heated rear seat indicator still on?
Yes REPAIR the circuit.
No INSTALL a new heated rear seat module.
REFER to: Heated Second Row Seat Module (501-10B Second Row Seats, Removal and Installation).

PINPOINT TEST G : THE RH (RIGHT-HAND) HEATED REAR SEAT INDICATOR IS ALWAYS ON - WITHOUT HEATED/VENTILATED SEATS

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

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

Possible Sources

  • Wiring, terminals or connectors
  • Heated seat module
G1 CHECK FOR A SHORT TO VOLTAGE IN THE RH (RIGHT-HAND) HEATED REAR SEAT SWITCH INDICATOR CIRCUIT
  • Ignition OFF.
  • Disconnect: Heated Rear Seat Module C3183A.
  • Ignition ON.

Is the RH heated rear seat indicator still on?
Yes REPAIR the circuit.
No INSTALL a new heated rear seat module.
REFER to: Heated Second Row Seat Module (501-10B Second Row Seats, Removal and Installation).

PINPOINT TEST H : BOTH HEATED SEATS ARE INOPERATIVE — WITH HEATED/VENTILATED SEATS

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

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
  • RHVAC module
  • SCMF

Visual Inspection and Pre-checks

  • Verify the BJB fuse 118 (30A) is OK.
H1 CHECK THE RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) MODULE HEATED SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)
  • Start the engine.
  • Using a diagnostic scan tool, monitor the RHVAC module CC_SW_D_HSEATS and CC_SW_P_HSEATS Parameter Identifications (PIDs) while pressing and releasing the driver and passenger heated seat control switches.

Do the Parameter Identifications (PIDs) change when the driver and passenger heated seat 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 FOR SCMF (REAR SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition OFF.
  • Ignition ON.
  • Using a diagnostic scan tool, perform SCMF self-test.

Are 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 VOLTAGE SUPPLY CIRCUITS FOR AN OPEN
  • Ignition OFF.
  • Disconnect: SCMF Module C3365C.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365C-2   Ground
      C3365C-5   Ground

Are the voltages greater than 11 volts?
Yes GO to H4
No VERIFY BJB fuse 118 (30A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

H4 CHECK THE HEATED SEAT GROUND CIRCUITS FOR AN OPEN
  • Ignition OFF.
  • Disconnect: SCMF Module C3365B.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365B-4   Ground
      C3365B-5   Ground

Are the resistances less than 3 ohms?
Yes GO to H5
No REPAIR the circuit in question.

H5 CHECK THE SCMF (REAR SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the SCMF connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMF connectors. Make sure they seat and latch correctly.
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • 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, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMF.
REFER to: Second Row Seat Climate Control Module (501-10B Second Row Seats, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST I : THE LH (LEFT-HAND) HEATED SEAT IS INOPERATIVE — WITH HEATED/VENTILATED SEATS

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

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

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMF B1153:4B Driver Seat Cushion: Over Temperature Sets when the SCMF senses the left cushion temperature has exceeded 110°C (230°F) for more than 4 seconds. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B1156:01 Driver Seat: General Electrical Failure Sets when the SCMF senses the left heater element current draw has exceeded a specified threshold. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B1156:11 Driver Seat: Circuit Short To Ground Sets when the SCMF senses the left heater element current draw has exceeded a specified threshold. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B1156:12 Driver Seat: Circuit Short To Battery Sets when the SCMF senses the left heater circuit voltage is above a specified threshold when the driver is active. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B1156:1A Driver Seat: Circuit Resistance Below Threshold Sets when the SCMF senses the left heater element current draw is more than a specified threshold. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B1208:01 Driver Seat Cushion Temperature Sensor: General Electrical Failure Sets when the SCMF senses the left heater sensor voltage is out-of-range low or high. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B1208:11 Driver Seat Cushion Temperature Sensor: Circuit Short To Ground Sets when the SCMF senses the left heater sensor voltage is out-of-range low. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B1208:15 Driver Seat Cushion Temperature Sensor: Circuit Short To Battery Or Open Sets when the SCMF senses the left heater sensor voltage is out-of-range high. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.

Possible Sources

  • Wiring, terminals or connectors
  • Heater mat
  • RHVAC module
  • SCMF
I1 CHECK THE RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) MODULE HEATED SEAT CONTROL SWITCH PID (PARAMETER IDENTIFICATION)
  • Start the engine.
  • Using a diagnostic scan tool, monitor the RHVAC module CC_SW_D_HSEATS PID while pressing and releasing the LH heated seat control switch.

Did the PID change when the LH heated seat control switch was 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 FOR SCMF (REAR SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition OFF.
  • Ignition ON.
  • Using a diagnostic scan tool, perform SCMF self-test.

Are 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 all other Diagnostic Trouble Codes (DTCs), REFER to the SCMF DTC Chart.
No GO to I3

I3 CHECK THE HEATED SEAT VOLTAGE SUPPLY CIRCUITS FOR AN OPEN
  • Ignition OFF.
  • Disconnect: SCMF C3365C.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365C-2   Ground
      C3365C-5   Ground

Are the voltages greater than 11 volts?
Yes GO to I4
No REPAIR the affected circuit.

I4 CHECK THE HEATED SEAT GROUND CIRCUITS FOR AN OPEN
  • Ignition OFF.
  • Disconnect: SCMF Module C3365B.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365B-4   Ground
      C3365B-5   Ground

Are the resistances less than 3 ohms?
Yes GO to I5
No REPAIR the circuit in question.

I5 CHECK THE HEATER ELEMENT POWER 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.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3167-1   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to I6

I6 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3167-1   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3167-1   C3365A-5

Are the resistances greater than 10,000 ohms between the LH seat cushion heater mat and ground; and less than 3 ohms between the LH seat cushion heater mat and the SCMF?
Yes GO to I10
No REPAIR the affected circuit.

I7 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Ignition OFF.
  • Disconnect: SCMF C3365A and C3365G.
  • Disconnect: Left Rear Seat Cushion Heater C3167.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3167-2   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3167-2   C3365G-6

Is the resistance greater than 10,000 ohms between the LH seat cushion heater mat and ground; and less than 3 ohms between the LH seat cushion heater 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 SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3167-3   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3167-3   C3365G-1

Is the resistance greater than 10,000 ohms between the LH seat cushion heater mat and ground; and less than 3 ohms between the LH seat cushion heater mat and the SCMF?
Yes GO to I9
No REPAIR the open circuit or REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

I9 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3167-2   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to I14

I10 CHECK THE HEATER ELEMENT GROUND CIRCUIT FOR AN OPEN
  • Disconnect: Left Rear Seat Backrest Heater C3372.
  • Measure:
    Click to display 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 CUSHION HEATED SEAT MAT FOR AN OPEN OR 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 LH seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).

I12 CHECK THE BACKREST HEATED SEAT MAT FOR AN OPEN OR 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 LH seat backrest heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).

I13 CHECK THE CIRCUIT BETWEEN THE CUSHION HEATER MAT AND BACKREST HEATER MAT FOR AN OPEN AND SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3167-4   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3167-4   C3372-1

Is the resistance greater than 10,000 ohms between the LH seat cushion heater mat and ground; and less than 3 ohms between the LH seat cushion heater mat and the backrest heater mat?
Yes GO to I15
No REPAIR the circuit.

I14 CHECK THE HEATED SEAT TEMPERATURE SENSOR FOR AN OPEN OR 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 LH seat cushion heater 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 of the SCMF connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMF connectors. Make sure they seat and latch correctly.
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • 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, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMF.
REFER to: Second Row Seat Climate Control Module (501-10B Second Row Seats, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST J : THE RH (RIGHT-HAND) HEATED SEAT IS INOPERATIVE — WITH HEATED/VENTILATED SEATS

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

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

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMF B1151:4B Passenger Seat Cushion: Over Temperature Sets when the SCMF senses the right cushion temperature has exceeded 110°C (230°F) for more than 4 seconds. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B1155:01 Passenger Seat: General Electrical Failure Sets when the SCMF senses the right heater element current draw has exceeded a specified threshold. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B1155:11 Passenger Seat: Circuit Short To Ground Sets when the SCMF senses the right heater element current draw has exceeded a specified threshold. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B1155:12 Passenger Seat: Circuit Short To Battery Sets when the SCMF senses the right heater circuit voltage is above a specified threshold when the driver is active. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B1155:13 Passenger Seat: Circuit Open Sets when the SCMF senses the right heater element current draw is less than a specified threshold. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B1155:1A Passenger Seat: Circuit Resistance Below Threshold Sets when the SCMF senses the right heater element current draw is more than a specified threshold. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B120A:01 Passenger Seat Cushion Temperature Sensor: General Electrical Failure Sets when the SCMF senses the right heater sensor voltage is out-of-range low or high. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B120A:11 Passenger Seat Cushion Temperature Sensor: Circuit Short To Ground Sets when the SCMF senses the right heater sensor voltage is out-of-range low. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.
SCMF B120A:15 Passenger Seat Cushion Temperature Sensor: Circuit Short To Battery Or Open Sets when the SCMF senses the right heater sensor voltage is out-of-range high. When this DTC sets, the SCMF disables the circuit until the ignition is cycled.

Possible Sources

  • Wiring, terminals or connectors
  • Heater mat
  • RHVAC module
  • SCMF
J1 CHECK THE RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) MODULE HEATED SEAT CONTROL SWITCH PID (PARAMETER IDENTIFICATION)
  • Start the engine.
  • Using a diagnostic scan tool, monitor the RHVAC module CC_SW_P_HSEATS PID while pressing and releasing the RH heated seat control switch.

Did the PID change when the RH heated seat control switch was 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 FOR SCMF (REAR SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Ignition OFF.
  • Ignition ON.
  • Using a diagnostic scan tool, perform SCMF self-test.

Are 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 all other Diagnostic Trouble Codes (DTCs), REFER to the SCMF DTC Chart.
No GO to J3

J3 CHECK THE HEATED SEAT VOLTAGE SUPPLY CIRCUITS FOR AN OPEN
  • Ignition OFF.
  • Disconnect: SCMF C3365C.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365C-2   Ground
      C3365C-5   Ground

Are the voltages greater than 11 volts?
Yes GO to J4
No REPAIR the affected circuit.

J4 CHECK THE HEATED SEAT GROUND CIRCUITS FOR AN OPEN
  • Ignition OFF.
  • Disconnect: SCMF Module C3365B.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365B-4   Ground
      C3365B-5   Ground

Are the resistances less than 3 ohms?
Yes GO to J5
No REPAIR the circuit in question.

J5 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Connect: SCMF C3365B and C3365C.
  • Disconnect: SCMF C3365A and C3365G.
  • Disconnect: Right Rear Seat Cushion Heater C3366.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3366-1   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to J6

J6 CHECK THE HEATER ELEMENT POWER CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3366-1   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3366-1   C3365A-2

Are the resistances greater than 10,000 ohms between the RH seat cushion heater mat and ground; and less than 3 ohms between the RH seat cushion heater mat and the SCMF?
Yes GO to J10
No REPAIR the affected circuit.

J7 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Ignition OFF.
  • Disconnect: SCMF C3365A and C3365G.
  • Disconnect: Rear Seat Cushion Heater C3366.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3366-2   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3366-2   C3365G-4

Is the resistance greater than 10,000 ohms between the RH seat cushion heater mat and ground; and less than 3 ohms between the RH seat cushion heater mat and the SCMF?
Yes GO to J8
No REPAIR the circuit.

J8 CHECK THE HEATED SEAT TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3366-3   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3366-3   C3365G-2

Is the resistance greater than 10,000 ohms between the RH seat cushion heater mat and ground; and less than 3 ohms between the RH 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 the possible causes of the circuit short.

J9 CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3366-2   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to J14

J10 CHECK THE HEATER ELEMENT GROUND CIRCUIT FOR AN OPEN
  • Disconnect: Right Rear Seat Backrest Heater C3365.
  • Measure:
    Click to display 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 CUSHION HEATED SEAT MAT FOR AN OPEN OR 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 RH seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).

J12 CHECK THE BACKREST HEATED SEAT MAT FOR AN OPEN OR 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 RH seat backrest heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).

J13 CHECK THE CIRCUIT BETWEEN THE CUSHION HEATER MAT AND BACKREST HEATER MAT FOR AN OPEN AND SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3366-4   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3366-4   C3365-1

Is the resistance greater than 10,000 ohms between the RH seat cushion heater mat and ground; and less than 3 ohms between the RH seat cushion heater mat and the backrest heater mat?
Yes GO to J15
No REPAIR the circuit.

J14 CHECK THE HEATED SEAT TEMPERATURE SENSOR FOR AN OPEN OR 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 RH seat cushion heater mat.
REFER to: Seat Heater Mat Removal (501-10A Front Seats, General Procedures).

J15 CHECK THE SCMF (REAR SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the SCMF connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMF connectors. Make sure they seat and latch correctly.
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • 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, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMF.
REFER to: Second Row Seat Climate Control Module (501-10B Second Row Seats, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST K : BOTH VENTILATED SEATS ARE INOPERATIVE

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

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

Possible Sources

  • RHVAC module
  • SCMF
K1 CHECK THE HEATED SEAT OPERATION
  • Start the engine.
  • Attempt to operate the heated seats using the RHVAC module buttons.

Did the heated seats operate correctly?
Yes GO to K2
No DIAGNOSE the inoperative heated seats. GO to Pinpoint Test H

K2 CHECK THE RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) MODULE VENTILATED SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)
  • Using a diagnostic scan tool, monitor the RHVAC module CC_SW_D_CL_S and CC_SW_P_CL_S Parameter Identifications (PIDs) while pressing and releasing the LH and RH ventilated seat control switches.

Do the Parameter Identifications (PIDs) change when the LH and RH ventilated seat 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 SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the SCMF connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMF connectors. Make sure they seat and latch correctly.
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • 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, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMF.
REFER to: Second Row Seat Climate Control Module (501-10B Second Row Seats, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST L : THE LH (LEFT-HAND) VENTILATED SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

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

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMF B14BD:11 Driver Seat Cushion Blower: Circuit Short To Ground If the current to the left seat cushion blower exceeds a programmed threshold, the SCMF shuts down the driver seat system and sets this DTC.
SCMF B14BE:11 Driver Seat Back Blower: Circuit Short To Ground If the current to the left seat back blower exceeds a programmed threshold, the SCMF shuts down the driver seat system and sets this DTC.

Possible Sources

  • Wiring, terminals or connectors
  • Cushion blower motor
  • Backrest blower motor
  • RHVAC module
  • SCMF
L1 CHECK THE LH (LEFT-HAND) HEATED SEAT OPERATION
  • Start the engine.
  • Attempt to operate the LH heated seat using the RHVAC module button.

Does the LH heated seat operate correctly?
Yes GO to L2
No DIAGNOSE the inoperative LH heated seat. GO to Pinpoint Test I

L2 CHECK THE RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) MODULE VENTILATED SEAT CONTROL SWITCH PID (PARAMETER IDENTIFICATION)
  • Start the engine.
  • Using a diagnostic scan tool, monitor the RHVAC module CC_SW_D_CL_S PID while pressing and releasing the LH ventilated seat control switch.

Did the PID change when the LH ventilated seat control switch was 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 BLOWER MOTOR CIRCUITS FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: SCMF C3365A and C3365G.
  • Disconnect: Left Rear Seat Cushion Blower Motor C370.
  • Disconnect: Left Rear Seat Backrest Blower Motor C3367.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365A-4   Ground
      C3365A-9   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365G-9   Ground
      C3365G-10   Ground

Is any voltage present?
Yes REPAIR the affected circuit.
No GO to L4

L4 CHECK THE BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365A-4   Ground
      C3365A-9   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365G-9   Ground
      C3365G-10   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to L5
No REPAIR the affected circuit.

L5 CHECK THE BLOWER MOTOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365A-4   C370-1
      C3365A-9   C370-3
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365G-9   C370-2
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365A-4   C3367-1
      C3365A-9   C3367-3
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365G-10   C3367-2

Are the resistances less than 3 ohms?
Yes If only the backrest blower did not operate correctly, INSTALL a new backrest blower motor.
REFER to: Second Row Seat Backrest Blower Motor (501-10B Second Row Seats, Removal and Installation).
GO to L6
If only the cushion blower did not operate 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 backrest blower motors did not operate correctly, GO to L7
No REPAIR the affected circuit.

L6 CHECK THE BLOWER MOTOR OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the SCMF connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMF connectors. Make sure they seat and latch correctly.
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • 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, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, 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 SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the SCMF connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMF connectors. Make sure they seat and latch correctly.
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • 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, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMF.
REFER to: Second Row Seat Climate Control Module (501-10B Second Row Seats, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST M : THE RH (RIGHT-HAND) VENTILATED SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

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

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMF B14C0:11 Passenger Seat Cushion Blower: Circuit Short To Ground If the current to the right seat cushion blower exceeds a programmed threshold, the SCME shuts down the driver seat system and sets this DTC.
SCMF B14C2:11 Passenger Seat Back Blower: Circuit Short To Ground If the current to the right seat back blower exceeds a programmed threshold, the SCME shuts down the driver seat system and sets this DTC.

Possible Sources

  • Wiring, terminals or connectors
  • Cushion blower motor
  • Backrest blower motor
  • RHVAC module
  • SCMF
M1 CHECK THE RH (RIGHT-HAND) HEATED SEAT OPERATION
  • Start the engine.
  • Attempt to operate the RH heated seat using the RHVAC module button.

Does the RH heated seat operate correctly?
Yes GO to M2
No DIAGNOSE the inoperative RH heated seat. GO to Pinpoint Test J

M2 CHECK THE RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) MODULE VENTILATED SEAT CONTROL SWITCH PID (PARAMETER IDENTIFICATION)
  • Start the engine.
  • Using a diagnostic scan tool, monitor the RHVAC module CC_SW_P_CL_S PID while pressing and releasing the RH ventilated seat control switch.

Did the PID change when the RH ventilated seat control switch was 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: Right Rear Seat Cushion Blower Motor C376.
  • Disconnect: Right Rear Seat Backrest Blower Motor C3364.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365A-3   Ground
      C3365A-11   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365G-7   Ground
      C3365G-8   Ground

Is any voltage present?
Yes REPAIR the affected circuit.
No GO to M4

M4 CHECK THE BLOWER MOTOR CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365A-3   Ground
      C3365A-11   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365G-7   Ground
      C3365G-8   Ground

Are the resistances greater than 10,000 ohms?
Yes GO to M5
No REPAIR the affected circuit.

M5 CHECK THE BLOWER MOTOR CIRCUITS FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365A-3   C376-1
      C3365A-11   C376-3
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365G-7   C376-2
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365A-3   C3364-1
      C3365A-11   C3364-3
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3365G-8   C3364-2

Are the resistances less than 3 ohms?
Yes If only the backrest blower did not operate correctly, INSTALL a new backrest blower motor.
REFER to: Second Row Seat Backrest Blower Motor (501-10B Second Row Seats, Removal and Installation).
GO to M6
If only the cushion blower did not operate 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 backrest blower motors did not operate correctly, GO to M7
No REPAIR the affected circuit.

M6 CHECK THE BLOWER MOTOR OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the SCMF connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMF connectors. Make sure they seat and latch correctly.
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • 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, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, 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 SEAT CLIMATE CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all of the SCMF connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMF connectors. Make sure they seat and latch correctly.
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • 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, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMF.
REFER to: Second Row Seat Climate Control Module (501-10B Second Row Seats, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST N : THE LH (LEFT-HAND) POWER EASY ENTRY SEAT IS INOPERATIVE

Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions

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

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMJ B137A:11 Left Entry Output: Circuit Short To Ground This DTC sets when the LH second row easy entry power release actuator output circuit is shorted to ground.
SCMJ B137A:15 Left Entry Output: Circuit Short To Battery Or Open This DTC sets when the LH second row easy entry power release actuator output circuit is shorted to voltage or open.
SCMJ B1546:23 Left Entry Switch: Signal Stuck Low This DTC sets when the LH second row single seat 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 release cable
  • Second row single seat easy entry seat fold switch
  • Second row easy entry power release actuator
  • Seat frame assembly
  • SCMJ
N1 CHECK THE DOOR AJAR SWITCH OPERATION
  • Open and close the LH rear passenger door. Verify the interior lights turn on when the door is open, and off when the door is closed.

Did the interior lights operate normally?
Yes GO to N2
No DIAGNOSE the interior lighting system.
REFER to: Interior Lighting (417-02 Interior Lighting, Diagnosis and Testing).

N2 CHECK THE LH (LEFT-HAND) SECOND ROW SINGLE SEAT EASY ENTRY SEAT FOLD SWITCH OPERATION
  • Ignition OFF.
  • Disconnect: SCMJ C4250C.
  • While pressing and releasing the LH second row single seat easy entry seat fold switch, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4250C-6   Ground

Is the resistance less than 10 ohms with the switch depressed, and greater than 10,000 ohms when not pressed?
Yes GO to N5
No GO to N3

N3 CHECK THE LH (LEFT-HAND) SECOND ROW SINGLE SEAT EASY ENTRY SEAT FOLD SWITCH GROUND CIRCUIT FOR AN OPEN
  • Disconnect: LH Second Row Single Seat Easy Entry Seat Fold Switch C3343.
  • Measure:
    Click to display 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 LH (LEFT-HAND) SECOND ROW SINGLE SEAT EASY ENTRY SEAT FOLD SWITCH CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3343-6   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3343-6   C4250C-2

Is the resistance greater than 10,000 between the LH second row single seat easy entry seat fold switch and ground, and less than 3 ohms between the LH second row single seat easy entry seat fold switch and SCMJ?
Yes INSTALL new LH second row single seat easy entry seat fold switch.
REFER to: Second Row Single Seat Easy Entry Seat Fold Switch (501-10B Second Row Seats, Removal and Installation).
No REPAIR the circuit.

N5 CHECK THE LH (LEFT-HAND) SECOND ROW EASY ENTRY POWER RELEASE ACTUATOR GROUND CIRCUIT FOR AN OPEN
  • Disconnect: LH Second Row Easy Entry Power Release Actuator C3345.
  • Measure:
    Click to display 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 LH (LEFT-HAND) SECOND ROW EASY ENTRY POWER RELEASE ACTUATOR OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
  • Disconnect: SCMJ C4250A.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4250A-1   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to N7

N7 CHECK THE LH (LEFT-HAND) SECOND ROW EASY ENTRY POWER RELEASE ACTUATOR OUTPUT CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4250A-1   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4250A-1   C3345-2

Is the resistance greater than 10,000 between the SCMJ and ground, and less than 3 ohms between SCMJ and the LH second row easy entry power release actuator?
Yes GO to N8
No REPAIR the circuit.

N8 CHECK THE LH (LEFT-HAND) SECOND ROW EASY ENTRY POWER RELEASE ACTUATOR WITH A FUSED JUMPER WIRE INSTALLED
  • Ignition OFF.
  • Connect: LH Second Row Easy Entry Power Release 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 THE LH (LEFT-HAND) SECOND ROW EASY ENTRY POWER RELEASE CABLE AND LATCH RELEASE MECHANISM FOR DAMAGE
  • Ignition OFF.
  • Check the cables and cable mounting for disconnection.
  • Check the latch release mechanism and latch feet for binding or damage.

Were any concerns found with the second row easy entry power release cable and/or latch release mechanism?
Yes For any cable concerns, INSTALL a new LH second row easy entry power release cable.
REFER to: Second Row Easy Entry Power Release Cable (501-10B Second Row Seats, Removal and Installation). For any latch release mechanism concerns, REPAIR or INSTALL a new seat frame assembly as needed.
No INSTALL a new LH second row easy entry power release actuator.
REFER to: Second Row Easy Entry Power Release Actuator (501-10B Second Row Seats, Removal and Installation).

N10 CHECK THE SCMJ (POWER FOLD SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the SCMJ connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMJ connector. Make sure it seats and latches correctly.
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • 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, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMJ.
REFER to: Power Fold Seat Module [SCMJ] (501-10C Third Row Seats, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST O : THE RH (RIGHT-HAND) POWER EASY ENTRY SEAT IS INOPERATIVE

Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions

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

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMJ B137B:11 Right Entry Output: Circuit Short To Ground This DTC sets when the RH second row easy entry power release actuator output circuit is shorted to ground.
SCMJ B137B:15 Right Entry Output: Circuit Short To Battery Or Open This DTC sets when the RH second row easy entry power release actuator output circuit is shorted to voltage or open.
SCMJ B1547:23 Right Entry Switch: Signal Stuck Low This DTC sets when the RH second row single seat 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 release cable
  • Second row single seat easy entry seat fold switch
  • Second row easy entry power release actuator
  • Seat frame assembly
  • SCMJ
O1 CHECK THE DOOR AJAR SWITCH OPERATION
  • Open and close the RH rear passenger door. Verify the interior lights turn on when the door is open, and off when the door is closed.

Did the interior lights operate normally?
Yes GO to O2
No DIAGNOSE the interior lighting system.
REFER to: Interior Lighting (417-02 Interior Lighting, Diagnosis and Testing).

O2 CHECK THE RH (RIGHT-HAND) SECOND ROW SINGLE SEAT EASY ENTRY SEAT FOLD SWITCH OPERATION
  • Ignition OFF.
  • Disconnect: SCMJ C4250C.
  • While pressing and releasing the RH second row single seat easy entry seat fold switch, measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4250C-3   Ground

Is the resistance less than 10 ohms with the switch depressed, and greater than 10,000 ohms when not pressed?
Yes GO to O5
No GO to O3

O3 CHECK THE RH (RIGHT-HAND) SECOND ROW SINGLE SEAT EASY ENTRY SEAT FOLD SWITCH GROUND CIRCUIT FOR AN OPEN
  • Disconnect: RH Second Row Single Seat Easy Entry Seat Fold Switch C3344.
  • Measure:
    Click to display 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 THE RH (RIGHT-HAND) SECOND ROW SINGLE SEAT EASY ENTRY SEAT FOLD SWITCH CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3344-6   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3344-6   C4250C-3

Is the resistance greater than 10,000 between the RH second row single seat easy entry seat fold switch and ground, and less than 3 ohms between the RH second row single seat easy entry seat fold switch and SCMJ?
Yes INSTALL new RH second row single seat easy entry seat fold switch.
REFER to: Second Row Single Seat Easy Entry Seat Fold Switch (501-10B Second Row Seats, Removal and Installation).
No REPAIR the circuit.

O5 CHECK THE RH (RIGHT-HAND) SECOND ROW EASY ENTRY POWER RELEASE ACTUATOR GROUND CIRCUIT FOR AN OPEN
  • Disconnect: RH Second Row Easy Entry Power Release Actuator C3346.
  • Measure:
    Click to display 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 THE RH (RIGHT-HAND) SECOND ROW EASY ENTRY POWER RELEASE ACTUATOR OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
  • Disconnect: SCMJ C4250A.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4250A-2   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to O7

O7 CHECK THE RH (RIGHT-HAND) SECOND ROW EASY ENTRY POWER RELEASE ACTUATOR OUTPUT CIRCUIT FOR AN OPEN OR SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4250A-2   Ground
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4250A-2   C3346-2

Is the resistance greater than 10,000 between the SCMJ and ground, and less than 3 ohms between SCMJ and the RH second row easy entry power release actuator?
Yes GO to O8
No REPAIR the circuit.

O8 CHECK THE RH (RIGHT-HAND) SECOND ROW EASY ENTRY POWER RELEASE ACTUATOR WITH A FUSED JUMPER WIRE INSTALLED
  • Ignition OFF.
  • Connect: RH Second Row Easy Entry Power 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 THE RH (RIGHT-HAND) SECOND ROW EASY ENTRY POWER RELEASE CABLE AND LATCH RELEASE MECHANISM FOR DAMAGE
  • Ignition OFF.
  • Check the cables and cable mounting for disconnection.
  • Check the latch release mechanism and latch feet for binding or damage.

Were any concerns found with the second row easy entry power release cable and/or latch release mechanism?
Yes For any cable concerns, INSTALL a new RH second row easy entry power release cable.
REFER to: Second Row Easy Entry Power Release Cable (501-10B Second Row Seats, Removal and Installation). For any latch release mechanism concerns, REPAIR or INSTALL a new seat frame assembly as needed.
No INSTALL a new RH second row easy entry power release actuator.
REFER to: Second Row Easy Entry Power Release Actuator (501-10B Second Row Seats, Removal and Installation).

O10 CHECK THE SCMJ (POWER FOLD SEAT MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the SCMJ connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins as necessary
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCMJ connector. Make sure it seats and latches correctly.
  • Reconnect all previously disconnected connectors.
  • Ignition ON.
  • 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, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMJ.
REFER to: Power Fold Seat Module [SCMJ] (501-10C Third Row Seats, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST P : DTC: U0140:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The SCMF and the BCM communicate using the MS-CAN.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMF U0140:00 Lost Communication With Body Control Module: No Sub Type Information Set by the SCMF whenever it has lost communication to the BCM for 5 seconds or longer while SCMF input voltage is between 10 and 15.5 volts.

Possible Sources

  • Module communication
  • SCMF
  • BCM
P1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to P2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

P2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the BCM pass the network test?
Yes GO to P3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

P3 RECHECK THE SCMF (REAR SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic 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 operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

P4 CHECK FOR DTC U0140:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0140:00 set in 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 Seat Climate Control Module (501-10B Second Row Seats, Removal and Installation).

PINPOINT TEST Q : DTC: U0257:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The SCMF and the RHVAC module communicate using the MS-CAN.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMF U0257:00 Lost Communication With Front Controls / Display Interface Module: No Sub Type Information Set by the SCMF whenever it has lost communication to the RHVAC module while SCMF input voltage is between 10 and 15.5 volts.

Possible Sources

  • Module communication
  • RHVAC module
  • SCMF
Q1 VERIFY CUSTOMER CONCERN
  • Ignition ON.
  • Verify there is an observable symptom present.

Is an observable symptom present?
Yes GO to Q2
No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

Q2 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, perform the network test.

Does the RHVAC module pass the network test?
Yes GO to Q3
No
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

Q3 RECHECK THE SCMF (REAR SEAT CLIMATE CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic 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 operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

Q4 CHECK FOR DTC U0257:00 IN OTHER MODULES

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.

  • Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
  • Ignition OFF.
  • Ignition ON.
  • Wait 10 seconds.
  • Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0140:00 set in 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 Seat Climate Control Module (501-10B Second Row Seats, Removal and Installation).

PINPOINT TEST R : DTC: U1000:00

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

DIAGNOSE any other SCMF Diagnostic Trouble Codes (DTCs) first. 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

DTC Description Fault Trigger Condition
SCMF U1000:00 Solid State Driver Protection Active -Driver Disabled: No Sub Type Information This DTC indicates there is an internal failure in the module. The module must be replaced.

Possible Sources

  • SCMF
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST S : DTC: U2100:00

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

Using a diagnostic scan tool, CARRY OUT PMI on the SCMF. REPEAT the self-test and VERIFY successful PMI. CLEAR the Diagnostic Trouble Codes (DTCs).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMF U2100:00 Initial Configuration Not Complete: No Sub Type Information This DTC indicates PMI has not been done to a newly installed module or configuration data has been lost.

Possible Sources

  • PMI has not been done to a newly installed module or configuration data has been lost.
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
PINPOINT TEST T : DTC: U3000:49

Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

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

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCMF U3000:49 Control Module: Internal Electronic Failure This DTC indicates there is an internal failure in the module. The module must be replaced.

Possible Sources

  • SCMF
Diagnostic steps are not provided for this symptom or DTC.  REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

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