A1 Check Power to Anti-Lock Brake Control Module

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

- Connect Rotunda 60-pin Breakout Box 014-00322 and Rotunda New Generation Star (NGS) Tester 007-00500 or equivalent to the Anti-Lock Brake Control Module 28-pin connector wiring harness.

- Set multi-meter to read volts DC.

- Turn ignition switch to RUN.

- Measure voltage between breakout box pins 15 and 13.

- Is voltage reading less than 10 volts?

YES -- Go to A5. A5 Check Ground

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