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• When Monitored: • Set Condition: Possible Causes LEFT REAR WSS LOOSE — B3, B4 CIRCUITS/CONNECTOR/TERMINAL DAMAGE IMPROPER LEFT REAR TIRE PRESSURE/MISMATCHED TIRES LEFT REAR TONE WHEEL DAMAGE LEFT REAR WSS ANTI-LOCK BRAKE MODULE Diagnostic Test 1. CHECK FOR DTC C102A-LEFT REAR WHEEL SPEED COMPARATIVE PERFORMANCE NOTE: This DTC must be active for the results of this test to be valid. With the scan tool, record and erase DTCs. Road test the vehicle over 40 km/h (25 m.p.h.). NOTE: Vehicle must be driven above 40 km/h (25 m.p.h.) for set conditions to be meet. NOTE: The Anti-Lock Brake Module must sense ALL 4 wheels at 12 km/h (7.5 mph) before it will extinguish Does the scan tool display: C102A-LEFT REAR WHEEL SPEED COMPARATIVE PERFORMANCE? Yes >> Go To 3 No >> Go To 2 2. CHECK WHEEL SPEED SENSOR SIGNALS Turn the ignition on. With the scan tool, monitor and graph ALL the WSS speeds and compare graph while an assistant drives the vehi- NOTE: If graph shows periodic dropouts pay close attention to the tone wheel. Is the Left Rear WSS speed showing 0 km/h (0 m.p.h.) or not matching other wheel speeds? Yes >> Go To 3 No >> Refer to the INTERMITTENT CONDITION diagnostic procedure. Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES - STANDARD PROCEDURE). 5 - 246 BRAKES - ABS ELECTRICAL DIAGNOSTICS LX |