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Home >> Chrysler >> 2011 >> 300 Base, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 184 (Anti-Lock Brake System (Abs) - Electrical Diagnostics - 3500 Cab & Chassis, 4500 & 5500) >> Diagnosis And Testing >> C1239-Emission Rolls Test Active >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. DTC IS PRESENT 
    NOTE:

    Make sure the battery is fully charged.

    1. Turn the ignition on.
    2. With the scan tool clear DTC's.
    3. Turn the ignition off.
    4. Turn the ignition on.
    5. Using the scan tool, read DTC's.

      Is the status Active for this DTC?

      Yes 

      • Go To  2.

      No 

      • Go To  3.
  2. ANTILOCK BRAKE MODULE 
    1. Turn the ignition on.
    2. Using the scan tool, select View DTC's in each module on the CAN B BUS and the CAN C BUS.

      Are there CAN BUS communication DTC's present in any other module?

      Yes 

      No 

      • Replace the Antilock Brake System (ABS) Module in accordance with the Service Information.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  3. INTERMITTENT COMMUNICATION DTC 
    1. The condition necessary to set this DTC is not present at this time.
    2. This DTC will set if the ABS Module receives two messages in a row from the TIPM indicating that the Emissions Rolls test is active.
    3. Using the scan tool, select View DTC's in each of the modules on the CAN B BUS and the CAN C BUS. If there are any communications DTC's present, perform the appropriate diagnostic procedure. Refer to TIPM - DIAGNOSIS AND TESTING .
    4. Perform any Technical Service Bulletins that may apply.

      Were any problems found?

      Yes 

      No 

      • Test complete, the condition or conditions that originally set this DTC are not present at this time.