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Diagnostic Test

WARNING: This page is about a different car, the 2007 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. 1) VERIFY THAT DTC B1B56-1ST ROW PASSENGER SEAT BELT SENSOR CIRCUIT OPEN DTC IS ACTIVE 
    NOTE: Ensure the battery is fully charged.

    Turn the ignition on.

    With the scan tool, read ORC DTCs.

    Does the scan tool display active DTC: B1B56-1ST ROW PASSENGER SEAT BELT SENSOR CIRCUIT OPEN? 

    Yes 

    1. Go to  2).

    No 

    1. Go to  6).
  2. 2) CHECK FOR VOLTAGE AT THE PASSENGER SEAT BELT SWITCH 
    Fig 1: Checking For Voltage At Passenger Seat Belt Switch
    GC0058388Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Disconnect the Passenger Seat Belt Switch connector.

    NOTE: Check connectors - Clean and repair as necessary.

    Turn the ignition on.

    Measure the voltage between the (R274) Passenger Hall Effect (+) circuit and ground.

    Measure the voltage between the (R272) Passenger Hall Effect (-) circuit and ground.

    Is voltage present on both circuits? 

    Yes 

    1. Replace the Passenger Seat Belt Switch.
    2. Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1 .

    No 

    1. Go to  3).
  3. 3) CHECK FOR AN OPEN PASSENGER HALL EFFECT (+) CIRCUIT 
    Fig 2: Checking For An Open Passenger Hall Effect (+) Circuit
    GC0058389Courtesy of CHRYSLER LLC
    WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

    Disconnect the both ORC connectors.

    NOTE: Check connectors - Clean and repair as necessary.

    Connect the 8443-24 Load Tool Adapter to the ORC C1 connector.

    Measure the resistance of the (R272) Passenger Hall Effect (+) circuit between the 8443-24 Adapter (C1 cavity 18) and the Passenger Seat Belt Switch connector cavity 1.

    Is the resistance below 10.0 Ohms? 

    Yes 

    1. Repair the open (R272) Passenger Hall Effect (+) circuit.
    2. Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1 .

    No 

    1. Go to  4).
  4. 4) CHECK FOR AN OPEN PASSENGER HALL EFFECT (-) CIRCUIT 
    Fig 3: Checking For An Open Passenger Hall Effect (-) Circuit
    GC0058390Courtesy of CHRYSLER LLC

    Measure the resistance of the (R274) Passenger Hall Effect (-) circuit between the 8443-24 Adapter (C1 cavity 14) and the Passenger Seat Belt Switch connector cavity 2.

    Is the resistance below 10.0 Ohms? 

    Yes 

    1. Repair the open (R274) Passenger Hall Effect (-) circuit.
    2. Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1 .

    No 

    1. Go to  5).
  5. 5) CHECK FOR PASSENGER SEAT BELT SWITCH CIRCUITS SHORTED TO GROUND 
    Fig 4: Checking For Passenger Seat Belt Switch Circuits Short To Ground
    GC0058391Courtesy of CHRYSLER LLC

    Measure the resistance of the (R274) Passenger Hall Effect (+) circuit between the Passenger Seat Belt Switch connector cavity 1 and ground.

    Measure the resistance of the (R272) Passenger Hall Effect (-) circuit between the Passenger Seat Belt Switch connector cavity 2 and ground.

    Is the resistance below 5 ohms on either circuit? 

    Yes 

    1. Repair the shorted to ground (R272, R274) Passenger Hall Effect circuit in accordance with the service information.
    2. Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1 .

    No 

    1. Replace the ORC in accordance with the service information.
    2. Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1 .
  6. 6) TEST FOR INTERMITTENT CONDITION 

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

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

    WARNING: To avoid serious or fatal injury, 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 serious or fatal injury, 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 serious or fatal injury, 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 the active DTC in question.

    Does the scan tool display any ACTIVE DTCs? 

    Yes 

    1. Select the appropriate diagnostic procedure from the DIAGNOSTIC CODE INDEX .

    No 

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