Test 8A - Left Front Sensor
NOTE:
Perform TEST 7A
before proceeding with this test. For connector terminal ID, see CONNECTOR IDENTIFICATION
under DIAGNOSIS & TESTING. For wiring diagram, see WIRING DIAGRAM
. Perform VERIFICATION TEST VER-1A
after each repair.
- Inspect left front wheel speed sensor for damage, contamination or looseness. Repair or replace sensor as necessary. If sensor is okay, check left front sensor tone (pulse) ring for contamination, damaged teeth or excessive runout. Repair or replace tone ring as necessary. If tone ring is okay, go to next step.
- Using a brass feeler gauge, measure left front wheel speed sensor air gap. If front sensor air gap is .016-.051" (.41-1.30 mm), go to next step. If front sensor air gap is not as specified, replace left front wheel speed sensor. Front wheel speed sensor air gap is not adjustable.
- Inspect left front wheel speed sensor wiring harness for damage. Repair or replace wiring as necessary. If wiring harness is okay, disconnect left front wheel speed sensor connector and ensure connector is clean and not damaged. Using an external ohmmeter, check resistance between left front wheel speed sensor connector terminals. If resistance is 900-1300 ohms, go to next step. If resistance is not 900-1300 ohms, replace left front wheel speed sensor.
- If excessive axle deflection occurs on extremely bumpy road or during off road use, it is possible for a wheel speed sensor to set a code. If ABS warning light did not come on during operation on a bumpy road or off road, go to TEST 26A . If ABS warning light came on during operation on a bumpy road or off road, wheel speed sensor circuit is operating properly at this time.