Operation CHARM: Car repair manuals for everyone.

Left Front Sensor Open

Test 1:




Tests 2 Through 6:




Tests 7 Through 9:






Symptom:
LEFT FRONT SENSOR OPEN

When Monitored and Set Condition:
LEFT FRONT SENSOR OPEN

When Monitored:
Ignition On.
The CAB continuously monitors the wheel speed sensor circuits by sending a signal through the sensor circuits.

Set Condition:
1. No output signal from any sensor for initial 1.0 second period.
2. Excessive sensor resistance for subsequent 1.0 second period. If CAB doesn't receive the proper signal back, Sensor Open DTC sets.

POSSIBLE CAUSES
LEFT FRONT WHEEL SPEED SENSOR (+) CIRCUIT OPEN
LEFT FRONT WHEEL SPEED SENSOR (-) CIRCUIT OPEN
LEFT FRONT WHEEL SPEED SENSOR (+) CIRCUIT SHORTED TO GROUND
LEFT FRONT WHEEL SPEED SENSOR 2-WAY CONNECTOR OBSERVABLE DEFECT
LEFT FRONT WHEEL SPEED SENSOR DEFECTIVE
LEFT FRONT WHEEL SPEED SENSOR OBSERVABLE DEFECT
LEFT FRONT WHEEL SPEED SENSOR WIRING HARNESS OBSERVABLE DEFECT
CAB CONNECTOR OBSERVABLE DEFECT
CAB DEFECTIVE