Initial Inspection
113901065>Inspection and VerificationNOTE: If a new ABS module is installed, it must be configured. Refer to Information Bus (Module Communications Network.
1. Verify the customer concern.
2. Verify the stoplamps operate correctly by applying and releasing the brake pedal with the ignition switch in the OFF position.
If the stoplamps operate correctly, proceed to the next step.
3. Visually inspect for obvious signs of mechanical or electrical damage.
Visual Inspection Chart
4. If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
^ check that the program card is correctly installed.
^ check the connections to the vehicle.
^ check the ignition switch position.
5. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostics.
6. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
^ CAN, ISO, or UBP circuit fault; all electronic control units no response/not equipped, refer to Information Bus (Module Communications Network).
^ No response/not equipped for the ABS module, GO to Pinpoint Test A. A: No Communication With the Anti-Lock Brake Control Module
^ System passed, retrieve and record the continuous diagnostic trouble codes (DTC's), erase the continuous DTC's, and carry out self-test diagnostics for the ABS module.
7. If the DTC's retrieved are related to the concern, go to the Anti-Lock Brake System (ABS) Module Diagnostic Trouble Code (DTC) Index. [1][2]Diagnostic Trouble Code Descriptions
8. If no DTC's related to the concern are retrieved, GO to Symptom Chart. Symptom Related Diagnostic Procedures
NOTE: Always retrieve the continuous DTC's after running the self-test.
NOTE: For a complete master list of DTC's, refer to Body Control Systems (Multifunction Electronic Control Module).