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Diagnostic Test

WARNING: This page is about a different car, the 2006 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. 1)  CHECK FOR ACTIVE INTERNAL FAULTS, IGNITION FAULTS, AND BATTERY FAULTS IN THE OCCUPANT CLASSIFICATION MODULE (OCM) 
    NOTE: Ensure the battery is fully charged.

    Turn the ignition on, then off, and then on again.

    With the scan tool, read Occupant Classification Module (OCM) DTCs.

    Does the scan tool display any active DTCs relating to internal faults, ignition faults, or battery faults? 

    Yes 

    1. Diagnose and repair the DTCs. Refer to the DTCS B1203 TO B1B19 & DIAGNOSTIC CODE INDEX article, and other appropriate DIAGNOSTICS articles.

    No 

    1. Go To  2).
  2. 2)  VERIFY THAT DTC B1B94-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT HIGH IS ACTIVE 

    With the scan tool, read OCM DTCs.

    Does the scan tool display active: B1B94-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT HIGH? 

    Yes 

    1. Go To  3).

    No 

    1. Go To  8).
  3. 3)  INSPECT PASSENGER SEAT HARNESS WIRES AND CONNECTORS 
    WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

    Using the wiring diagram/schematic as a guide, inspect the Passenger Seat Harness wiring and connectors. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.

    Are any of these conditions present? 

    Yes 

    NOTE: Do not attempt to repair the Seat Harness. Replace the Seat Harness if any of these conditions exist.
    1. Replace the Passenger Seat Harness in accordance with the Service Information.
    2. Perform the *OCS VERIFICATION TEST-VER. 1. (Refer to *OCS VERIFICATION TEST - VER 1 )

    No 

    1. Go To  4).
  4. 4)  VERIFY THAT PASSENGER SEAT HARNESS IS ROUTED CORRECTLY 

    Verify that the Passenger Seat Harness is routed correctly.

    Is the Passenger Seat Harness routed correctly? 

    Yes 

    1. Go To  5).

    No 

    1. Reroute the Passenger Seat Harness as necessary.
    2. Perform the *OCS VERIFICATION TEST-VER. 1. (Refer to *OCS VERIFICATION TEST - VER 1 )
  5. 5)  CHECK FOR DTC B1B94-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT HIGH WITH PASSENGER SEAT TRACK POSITION SENSOR DISCONNECTED 
    WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

    Disconnect the Passenger Seat Track Position Sensor connector.

    WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.

    Wait two minutes, and then with the scan tool, read OCM DTCs.

    Does the scan tool display: B1B94-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT HIGH? 

    Yes 

    1. Go To  6).

    No 

    1. Replace the Passenger Seat Track Position Sensor in accordance with the service information.
    2. Perform the *OCS VERIFICATION TEST-VER. 1. (Refer to *OCS VERIFICATION TEST - VER 1 )
  6. 6)  CHECK (R262) SEAT POSITION SENSOR DATA-PASSENGER CIRCUIT AND (R264) SEAT POSITION SENSOR VOLTAGE-PASSENGER CIRCUIT FOR A SHORT TO VOLTAGE 
    Fig 1: CHECKING SEAT POSITION SENSOR DATA-PASSENGER CIRCUIT AND SEAT POSITION SENSOR VOLTAGE-PASSENGER CIRCUIT FOR A SHORT TO VOLTAGE
    GC0043783Courtesy of DAIMLERCHRYSLER CORP.
    WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

    Disconnect the OCM connectors.

    WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.

    Measure the voltage of the (R262) Seat Position Sensor Data-Passenger circuit.

    Measure the voltage of the (R264) Seat Position Sensor Voltage-Passenger circuit.

    Is the voltage above 0.2 volts on either circuit? 

    Yes 

    NOTE: Do not attempt to repair the Seat Harness. Replace the Seat Harness if any of these conditions exist.
    1. Replace the Passenger Seat Harness in accordance with the Service Information.
    2. Perform the *OCS VERIFICATION TEST-VER. 1. (Refer to *OCS VERIFICATION TEST - VER 1 )

    No 

    1. Go To  7).
  7. 7)  CHECK (R262) SEAT POSITION SENSOR DATA-PASSENGER CIRCUIT FOR A SHORT TO (R264) SEAT POSITION SENSOR VOLTAGE-PASSENGER CIRCUIT 
    Fig 2: CHECKING SEAT POSITION SENSOR DATA-PASSENGER CIRCUIT FOR A SHORT TO SEAT POSITION SENSOR VOLTAGE-PASSENGER CIRCUIT
    GC0043784Courtesy of DAIMLERCHRYSLER CORP.
    WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

    Measure the resistance between the (R262) Seat Position Sensor Data-Passenger circuit and the (R264) Seat Position Sensor Voltage-Passenger circuit.

    Is the resistance below 10k ohms? 

    Yes 

    NOTE: Do not attempt to repair the Seat Harness. Replace the Seat Harness if the condition inspecting or testing for is present in the Seat Harness.
    1. Replace the Passenger Seat Harness in accordance with the service information.
    2. Perform the *OCS VERIFICATION TEST-VER. 1. (Refer to *OCS VERIFICATION TEST - VER 1 )

    No 

    1. Replace the OCM in accordance with the Service information.
      2. WARNING: If the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced. Failure to take the proper precautions can result in accidental airbag deployment and personal injury or death.
    2. Perform the *OCS VERIFICATION TEST-VER. 1. (Refer to *OCS VERIFICATION TEST - VER 1 )
  8. 8)  TEST FOR AN INTERMITTENT CONDITION 

    With the scan tool, record and erase all DTCs from the OCM.

    If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.

    WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

    Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.

    Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.

    The following additional checks may assist you in identifying a possible intermittent problem.

    Reconnect any disconnected components and harness connector.

    WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.

    With the scan tool monitor active codes as you work through the following steps.

    WARNING: To avoid personal injury or death, maintain a safe distance from all airbags while performing the following steps.

    Wiggle the wiring harness and connectors of the related airbag circuit or component.

    If only stored codes return continue the test until the problem area has been isolated.

    In the previous steps you have attempted to recreate the conditions responsible for setting active DTC in question.

    Are any ACTIVE DTCs present? 

    Yes 

    1. Select the appropriate symptom from Symptom List.

    No 

    1. No problem found at this time. Erase all codes before returning vehicle to customer.
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