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Home >> Chrysler >> 2006 >> PT Cruiser Base, 2D Convertible, Standard >> Repair and Diagnosis >> Body & Frame >> Seats >> Heated Seat System - Electrical Diagnostics >> Electrical Diagnostics >> DTC Troubleshooting >> B1092-Front Left Seat Heater Control Circuit Low >> Diagnostic Test

Diagnostic Test

  1. 1)  VERIFY THAT DTC B1092-FRONT LEFT SEAT HEATER CONTROL CIRCUIT LOW IS ACTIVE 

    With the scan tool, record and erase DTC's

    Operate the Heated Seat Switch in both positions several times.

    With the scan tool, read DTC's.

    Does the DTC B1092 - FRONT LEFT SEAT HEATER CONTROL CIRCUIT LOW reset? 

    Yes 

    1. Go To  2).

    No 

    1. The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
    2. Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST - VER 1 ).
  2. 2)  DISCONNECT LEFT CUSHION HEATER 4-WAY CONNECTOR AND READ DTC'S 
    Fig 1: Left Seat Cushion Heater 4-Way Connector
    GC0043496Courtesy of DAIMLERCHRYSLER CORP.

    Disconnect the Left Seat Cushion Heater 4 - way connector.

    NOTE: Check connectors - Clean and repair as necessary.

    With the scan tool, erase HSM DTC's

    Operate the Heated Seat Switch in both positions several times.

    With the scan tool, read DTC's.

    Does the scan tool display the same DTC? 

    Yes 

    1. Go To  5).

    No 

    1. Go To  3).
  3. 3)  CHECK THE (P187) LEFT SEAT HEATER B(+) DRIVER FOR A SHORT TO GROUND AT THE SEAT 
    Fig 2: Measuring Resistance Between Left Seat Heater Connector (Component Side) & Seat Frame
    GC0043497Courtesy of DAIMLERCHRYSLER CORP.

    Measure between the (P187) Left Seat Heater B(+) Driver circuit at the Left Seat Heater connector (component side) and the seat frame for a short to ground.

    Is the resistance below 1000 ohms? 

    No  

    1. Go To  4).

    Yes  

    1. Repair/replace the pigtail/heating element as necessary for a short to ground condition.
    2. Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST - VER 1 ).
  4. 4)  CHECK THE LEFT HEATER ELEMENT SEAT CUSHION AND SEAT BACK RESISTANCE 
    Fig 3: Measuring Resistance Between Left Seat Heater Driver & Ground Circuits
    GC0043499Courtesy of DAIMLERCHRYSLER CORP.

    Gain access to the seat cushion and seat back heater connectors.

    Check the resistance of each of the heater elements by measuring between the (P187) Left Seat Heater B(+) Driver and the Ground circuit at the seat cushion and seat back heater connectors.

    For the seat cushion element the resistance value is 3 to 5.5 ohms.

    For the seat back element the resistance value is 4 to 6 ohms.

    Is the resistance correct for each heater element? 

    Yes  

    1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent short to ground.

    No  

    1. Replace the heater element as necessary.
    2. Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST - VER 1 ).
  5. 5)  Check the (P187) Left Seat Heater B(+) Driver circuit for a short to ground 
    Fig 4: Measuring Resistance Between HSM Connector & Ground
    GC0043501Courtesy of DAIMLERCHRYSLER CORP.

    Ensure the Left Seat Cushion Heater 4 - way connector is still disconnected.

    Disconnect the Heated Seat Module connector.

    NOTE: Check connectors - Clean and repair as necessary.

    Measure the (P187) Left Seat Heater B(+) Driver circuit cavity D for (LHD) or K for (RHD) at the HSM connector to ground.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Repair the (P187) Left Seat Heater B(+) Driver circuit for a short to ground.
    2. Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST - VER 1 ).

    No 

    1. Replace the Heated Seat Module.
    2. Perform BODY VERIFICATION TEST - VER 1. (Refer to BODY VERIFICATION TEST - VER 1 ).
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