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POSSIBLE CAUSES SPEED SENSOR OR CONNECTOR DAMAGED TONE WHEEL DAMAGED WHEEL SPEED SENSOR AIR GAP OUT OF SPECIFICATION WHEEL BEARING EXCESS RUNOUT WHEEL SPEED SENSOR INOPERATIVE CAB - CAN’T READ WHEEL SPEED SENSOR SIGNAL INTERMITTENT SIGNAL DTC TEST ACTION APPLICABILITY 1 Turn the ignition on. t, monitor all Wheel Speed Sensors while an assistant drives the vehicle. t Wheel Speed Sensor readings. Is one wheel speed signal zero or differing from others by more than 5 km/h (3 mph)? All Yes → Go To 2 No → Go To 7 2 Turn the ignition off. All Yes → Repair as necessary. The CAB must sense all four wheels at 25 km/h (15 mph) before it will extinguish the ABS Indicator. No → Go To 3 3 Turn the ignition off. All Yes → Go To 4 No → Replace the Tone Wheel. The CAB must sense all four wheels at 25 km/h (15 mph) before it will extinguish the ABS Indicator. 4 Turn the ignition off. 9 - 0.0689) ? All Yes → Go To 5 No → Repair as necessary. The CAB must sense all four wheels at 25 km/h (15 mph) before it will extinguish the ABS Indicator. 23 BRAKES (CAB) LEFT FRONT SENSOR SIGNAL FAILURE — Continued |