Test C: Left Front Sensor & Circuit
- DTC 33 & 43: Check Left Front Wheel Sensor Circuits
Disconnect 16-pin connector on jumper from HCU assembly to chassis harness connector. See COMPONENT LOCATIONS
. Measure resistance between HCU assembly 16-pin chassis harness connector terminals No. 3 (Tan/Black wire) and 7 (Tan/Orange). See Figure
. If resistance is 1015-1245 ohms, go to step 3). If resistance is not 1015-1245 ohms, go to next step.
- Check Left Front Wheel Sensor
Disconnect left front wheel sensor harness connector. Measure resistance between wheel sensor connector terminals. If resistance is 1015-1245 ohms, repair circuit No. 521 (Tan/Orange wire) or No. 522 (Tan/Black wire) between wheel sensor and HCU 16-pin harness connector. If resistance is not 1015-1245 ohms, replace left front wheel sensor.
- Check Wiring At Jumper Harness
Remove cover from HCU. Disconnect jumper harness from ABS control module. Check for broken or damaged wire in jumper harness. If wires are okay, go to next step. If wires are not okay, replace broken or damaged wire in jumper harness.
- Check Left Front Wheel Sensor Circuit Short To Ground
Remove cover from HCU. Disconnect jumper harness from ABS control module. Using a DVOM, check resistance between ABS control module 14-pin connector terminal No. 4 (Tan/Orange wire) and ground. Also check resistance between terminal No. 12 (Tan/Black wire) and ground. If resistance is more than 5 ohms, go to next step. If resistance is 5 ohms or less, Repair Tan/Black wire and Tan wire in jumper harness. If wires are okay replace left front wheel sensor.
- Check Left Front Wheel Speed Sensor Air Gap
Remove left front wheel and check for damage to sensor or sensor indicator. Verify air gap between sensor and sensor indicator is within .020-.037" (.50-.95 mm). If air gap is not as specified, check for excessive axle bearing end play and adjust sensor position as required. If air gap is okay and warning light remains ON constantly, replace ABS control module.