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Diagnostic Test

WARNING: This page is about a different car, the 2015 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. TEST FOR INTERMITTENT CONDITION 
    NOTE:

    Check for any Service Bulletins related to the condition. If a Service Bulletin applies, perform the procedure outlined in the Service Bulletin before continuing with this procedure.

    1. Turn the ignition on.
      NOTE:

      Make sure the battery voltage is between 10.0 and 16.0 volts.

    2. With the scan tool, read the module status.
      NOTE:

      Check the BCM for any active CAN DTCs and perform the appropriate diagnostics before proceeding. Refer to DIAGNOSIS AND TESTING .

      Does the scan tool indicate that the module is active on the bus?

      Yes 

      No 

      • Go To Step  2
  2. CHECK (A107) AND (A200) FUSED B(+) CIRCUITS FOR AN OPEN OR SHORT 
    1. Turn the ignition off.
    2. Disconnect the Anti-Lock Brake System (ABS) Module harness connector.
      NOTE:

      The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.

    3. Using a 12-volt test light connected to ground, check the (A107) and the (A200) Fused B(+) circuits at the ABS Module harness connector.

      Does the test light illuminate brightly for each circuit?

      Yes 

      • Go To Step  3

      No 

      • Repair the Fused B(+) circuits for an open or short.
      • Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  3. CHECK THE (F941) IGNITION RUN/START CONTROL OUTPUT CIRCUIT FOR OPEN OR SHORT 
    1. Turn the ignition on.
    2. Using a 12-volt test light connected to ground, check the (F941) Ignition Run/Start Control Output circuit at the ABS Module harness connector.

      Does the test light illuminate brightly?

      Yes 

      • Go To Step  4

      No 

      • Repair the (F941) Ignition Run/Start Control Output circuit for an open or short.
      • Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  4. CHECK THE (Z802) GROUND CIRCUIT FOR AN OPEN 
    1. Using a 12-volt test light connected to 12 volts check the (Z802) Ground circuit at the ABS Module harness connector.

      Does the test light illuminate brightly?

      Yes 

      • Go To Step  5

      No 

      • Repair the (Z802) Ground circuit for an open.
      • Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  5. CHECK THE (D497) CAN C (+) BUS CIRCUIT FOR AN OPEN 
    1. Turn the ignition off.
    2. Disconnect the Star CAN C Front C8 harness connector.
    3. Measure the resistance of the (D497) CAN C (+) bus circuit between the Star CAN C Front C8 harness connector and the ABS Module harness connector.

      Is resistance below 3.0 Ohms?

      Yes 

      • Go To Step  6

      No 

      • Repair the (D497) CAN C (+) bus circuit for an open.
      • Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  6. CHECK THE (D498) CAN C (-) BUS CIRCUIT FOR AN OPEN 
    1. Measure the resistance of the (D498) CAN C (-) bus circuit between the Star CAN C Front C8 harness connector and the ABS Module harness connector.

      Is resistance below 3.0 Ohms?

      Yes 

      No 

      • Repair the (D498) CAN C (-) bus circuit for an open.
      • Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
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