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HOMESERVICE MANUALSCHRYSLER2005CROSSFIRE LIMITED, 2D COUPE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESTRACTION CONTROLANTI-LOCK BRAKE SYSTEM - ELECTRICAL DIAGNOSTICSDTC TROUBLESHOOTINGDTC 1020: CAN BUS COMMUNICATION: GENERAL MALFUNCTIONDIAGNOSTIC TEST
2005 Chrysler Crossfire Limited, 2D Coupe, Standard

Diagnostic Test

2005 Chrysler Crossfire Limited, 2D Coupe, StandardSECTION Diagnostic Test
  1. 1)   MEASURE THE RESISTANCE OF THE CAN C BUS (+) CIRCUIT
    Fig 1: Checking CAN C BUS (+) Circuit
    GC0033807Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the CAB harness connector.

    Disconnect the harness connectors of the other modules on the CAN Bus network.

    NOTE: Check connectors - Clean/repair as necessary.

    Measure the resistance of the CAN C Bus (+) circuit from the CAB harness connector to the harness connectors of the other modules on the CAN Bus network.

    Is the resistance below 1.0 ohm? 

    Yes 

    1. Go to step  2).

    No 

    1. Repair the CAN C Bus (+) circuit for an open.
    2. Perform ABS VERIFICATION TEST .
  2. 2)   MEASURE THE RESISTANCE OF THE CAN C (-) BUS CIRCUIT
    Fig 2: Checking CAN C BUS (-) Circuit
    GC0033808Courtesy of DAIMLERCHRYSLER CORP.

    With the ignition off.

    Measure the resistance of the CAN C Bus (-) circuit from the CAB harness connector to the harness connectors of the other modules on the CAN Bus network.

    Is the resistance below 1.0 ohm? 

    Yes 

    1. Replace the Controller Antilock Brake (CAB) Module. (Refer to ELECTRICAL/ELECTRONIC CONTROL MODULES/CONTROLLER ANTILOCK BRAKE - REMOVAL) .
    2. Perform ABS VERIFICATION TEST .

    No 

    1. Repair the CAN C Bus (-) circuit for an open.
    2. Perform ABS VERIFICATION TEST .
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.