Power/Ground to Anti-Lock Brake Control Module

If the fuse had failed:

1. Check the weather packing of the power connector to the EHCU C155a.
2. Remove power distribution box fuse F (60A).
3. Measure the resistance between the outside pin of power distribution box fuse F (60A), circuit 532 (OG/YE), and ground.
4. Spray with water and wiggle the wiring between the power distribution box and the anti-lock brake control module.
5. If any continuity is measured, repair or install new wiring.

Check for opens in wiring:

1. Disconnect the EHCU C155a.
2. While measuring the voltage between EHCU C155a pins 9 and 25, circuit 532 (OG/YE), and negative battery post, wiggle the wiring harness.
3. If the voltage momentary drops below 10 volts while the harness is wiggled, repair or install new wiring.
4. While measuring the resistance between the EHCU C155a pins 8 and 24, circuit 530 (LG/RD), and ground, wiggle the wiring harness.
5. If the resistance momentarily goes above 5 ohms, while the harness is wiggled, repair or install new wiring.