Right Front Sensor Circuit Failure

Symptom List:
LEFT FRONT SENSOR SIGNAL FAILURE
LEFT REAR SENSOR SIGNAL FAILURE
RIGHT FRONT SENSOR SIGNAL FAILURE
RIGHT REAR SENSOR SIGNAL FAILURE

Test Note: All symptoms listed above are diagnosed using the same tests. The title for the tests will be LEFT FRONT SENSOR SIGNAL FAILURE.

LEFT FRONT SENSOR SIGNAL FAILURE

When Monitored:
Wheel speed comparison is checked at drive off and continuously thereafter.

Set Condition:
If, during an ABS stop, the CAB commands any valve solenoid on for an extended length of time, and does not see a corresponding wheel speed change, the Diagnostic Trouble Code (DTC) is set. The DTC can also set if the signal is missing or erratic.

LEFT REAR SENSOR SIGNAL FAILURE

When Monitored:
Wheel speed comparison is checked at drive off and continuously thereafter.

Set Condition:
If, during an ABS stop, the CAB commands any valve solenoid on for an extended length of time, and does not see a corresponding wheel speed change, the Diagnostic Trouble Code (DTC) is set. The DTC can also set if the signal is missing or erratic.

RIGHT FRONT SENSOR SIGNAL FAILURE

When Monitored:
Wheel speed comparison is checked at drive off and continuously thereafter.

Set Condition:
If, during an ABS stop, the CAB commands any valve solenoid on for an extended length of time, and does not see a corresponding wheel speed change, the Diagnostic Trouble Code (DTC) is set. The DTC can also set if the signal is missing or erratic.

RIGHT REAR SENSOR SIGNAL FAILURE

When Monitored:
Wheel speed comparison is checked at drive off and continuously thereafter.

Set Condition:
If, during an ABS stop, the CAB commands any valve solenoid on for an extended length of time, and does not see a corresponding wheel speed change, the Diagnostic Trouble Code (DTC) is set. The DTC can also set if the signal is missing or erratic.

Test 1-4:

Test 5-7:

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