B1 Check Continuity of Circuits 518 and 51

- Turn ignition switch OFF.

- Disconnect 55-pin plug from ABS module.

ABS Module:

- Check continuity between breakout box pins 28 and 60.

Break Out Box:

- Connect EEC-IV breakout box 014-00322 with Anti-Lock Test Adapter T90P-50-ALA or equivalent to the anti-lock 55-pin plug on the wiring harness.

- Is continuity present?

YES -- Go to B2. B2 Check LH Rear Sensor to Ground

NO -- Go to B3. B3 Check Continuity of Circuits 523 and 524