Inspection and Verification
Inspection and Verification1. Verify the customer concern.
2. Visually inspect for obvious signs of mechanical and electrical damage.
Visual Inspection Chart
3. If the fault is visually evident, repair the fault. If the fault is not visually evident, connect the diagnostic tool to the Data Link Connector (DLC) located beneath the instrument panel 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.
4. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool.
5. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
^ ISO circuit fault; all electronic control units no response/not equipped.
^ No response/not equipped for the ABS control module, GO to Pinpoint Test A. Test A
^ System passed, retrieve and record the continuous Diagnostic Trouble Codes (DTCs), erase the continuous DTCs. If no DTCs are present, carry out the self-test diagnostics for the ABS control module with the brake pedal not applied.
6. If the DTCs retrieved are related to the concern, Go to Anti-Lock Brake Control Module Diagnostic Trouble Code (DTC) Index to continue diagnostics. Diagnostic Trouble Code Tests and Associated Procedures
7. If no DTCs related to the concern are retrieved, GO to Symptom Chart. Symptom Related Diagnostic Procedures
NOTE: If DTCs C1095, C1096, C1148, C1158, C1229 and C1950 are set, simply clearing the DTCs after a repair will not turn the yellow ABS/red brake warning light off. Turn the ignition switch to the OFF position. Turn the ignition switch to the ON position, clear the DTCs and drive the vehicle at least 10 km/h (6.25 mph) for the ABS module to confirm normal operation of the ABS. After this has completed, the yellow ABS/red brake warning light will turn off.