A1 Check Power to Anti-Lock Brake Control Module

- Disconnect anti-lock brake wiring plug from anti-lock brake control module.

- Connect EEC-IV Breakout Box 014-00322 with Anti-Lock Test Adapter T90P-50-ALA or equivalent to the Anti-Lock 55-pin plug wiring harness.

- Set multi-meter to read volts DC.

- Turn ignition switch to RUN.

- Measure voltage between breakout box pins 53 and 60.

- Is voltage reading over 10 volts?

YES -- Go to A4. A4 Check Ground

NO -- Go to A2. A2 Check Anti-Lock Brake Control Module to Ground Wire