Quick Test

Perform a visual inspection. See VISUAL INSPECTION . Apply parking brake. Place shift selector in PARK position. Block drive wheels. Turn all electrical loads off (radio, lamps, A/C, blower fans, etc.). Personal safety and correct diagnosis depend on completion of this step. If this step cannot be completed, DO NOT continue with QUICK TEST. If this step can be completed, go to next step.
Turn ignition on. Observe ANTI-LOCK warning light. If ANTI-LOCK warning light turns on for a few seconds or stays on, go to next step. If ANTI-LOCK warning light is off, go to PINPOINT TEST F .
NOTE: Certain DTCs require vehicle to be driven in order for warning light to turn on. Other DTCs will turn warning light on each time engine is started.
Start engine. Drive vehicle if necessary. Observe ANTI-LOCK warning light. If ANTI-LOCK warning light is on, a hard fault is present. Go to next step. If ANTI-LOCK warning light is off, system is operating normally at this time. If ABS symptom exists, fault may be intermittent. Go to next step. If no symptom exists, ABS is operating normally. Check non-ABS portion of brake system for possible cause of problem.
NOTE: DTCs will begin to flash immediately without introduction and flash only once. Ignition switch cycling (off/on) will repeat DTCs if numbers are missed.
Retrieve diagnostic trouble codes. See RETRIEVING TROUBLE CODES . Record all DTCs. Perform pinpoint test specified for first DTC retrieved. See DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION table. If ANTI-LOCK warning light does not flash, go to PINPOINT TEST F . After all codes have been retrieved and faults have been corrected, clear trouble codes. See CLEARING TROUBLE CODES .