|
|
• When Monitored: • Set Condition: Possible Causes LEFT FRONT TONE WHEEL/BEARING DAMAGED WHEEL SPEED SIGNALS SWAPPED LEFT FRONT WSS ANTI-LOCK BRAKES MODULE Diagnostic Test 1. COMPARE WHEEL SPEED SENSOR SIGNALS WARNING: Ensure brake capability is available before road testing. Slowly accelerate as straight as possible from a stop to 40 km/h (25 m.p.h.). Does the Left Front WSS speed differ from the other WSS speeds by 8 km/h (5 m.p.h.) or show NO Yes >> Go To 2 No >> Perform the ABS Intermittent Condition diagnostic procedure in this Section. Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES - STANDARD PROCEDURE). 2. INSPECT TONE WHEEL/BEARING Turn the ignition off. Visually inspect the tone wheel and bearing for damage. • Check the tone wheel teeth for missing teeth, cracks, and looseness. The teeth must be perfectly square, not Were any problems found? Yes >> Repair as necessary. Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES - STANDARD PROCEDURE). No >> Go To 3 3. CHECK WHEEL SPEED SENSOR WIRING Check the Anti-Lock Brakes Module and Wheel Speed Sensors harness connectors for incorrectly wired connectors. Were any problems found? Yes >> Repair as necessary. Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES - STANDARD PROCEDURE). No >> Go To 4 5 - 266 BRAKES - ABS ELECTRICAL DIAGNOSTICS LX |