Right Front Wheel Speed Signal Failure

Test 1 - 3





Test 4 - 6

Symptom:
RF WHEEL SPEED/ SIGNAL FAILURE

When Monitored and Set Condition:
RF WHEEL SPEED/ SIGNAL FAILURE

When Monitored: Wheel speed comparison is checked at drive off or every 7 milliseconds (ms). Wheel speed continuity is checked every 7 milliseconds. Wheel speed phase length supervision is checked every 7 milliseconds.

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.





Possible Causes