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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> Restraints >> Seat Belts >> Air Bag Restraint System - Electrical Diagnostics >> DTC Troubleshooting >> U0002-Can C Bus Off Performance >> Diagnostic Test

Diagnostic Test

  1. DETERMINE ACTIVE OR STORED DTC 

    Is the DTC active or stored?

    ORC - ACTIVE DTC 

    • Go to step  2

    ORC - STORED DTC 

    • Go to step  3
  2. REPLACE OCCUPANT RESTRAINT CONTROLLER 

    When this code is set, view repair.

    Repair 

      WARNING: If the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced. Failure to follow these instructions may result in possible serious or fatal injury.
    • WARNING: Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
    • Replace the ORC in accordance with Service Information.
    • Perform the RESTRAINTS SYSTEM VERIFICATION TEST. See DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure .
  3. STORED ORC DTC 
    1. With the scan tool, record and erase all DTCS from all Airbag System Modules.
    2. If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.
      WARNING: Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
    3. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
    4. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
    5. The following additional checks may assist you in identifying a possible intermittent problem.
    6. Reconnect any disconnected components and harness connector.
      WARNING: Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
    7. With the scan tool monitor active codes as you work through the following steps.
      WARNING: Maintain a safe distance from all airbags while performing the following steps. Failure to follow these instructions may result in possible serious or fatal injury.
    8. Wiggle the wiring harness and connectors of the related airbag circuit or component.
    9. If codes are related to the Driver Airbag circuits, rotate the steering wheel from stop to stop.
    10. If only stored codes return continue the test until the problem area has been isolated.
    11. In the previous steps you have attempted to recreate the conditions responsible for setting active DTC in question.

      Are any ACTIVE DTCS present?

      Yes 

      No 

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