F12 Check Input Power to ABS Warning Lamp

- Turn ignition switch OFF.

- Reconnect all connectors.

- Disconnect connector from anti-lock brake control module.

- Connect Rotunda EEC-IV 60-pin Breakout Box 014-00322 with Rotunda Anti-Lock Brake Adapter 007-00116 or equivalent to wiring harness connector.

- Connect a voltmeter to connector pin 14, circuit 601 (LB/PK) and a known good ground.

- Turn ignition switch to RUN.

- Is battery voltage present?

YES -- Replace anti-lock brake control module. Restore vehicle. Retest system.

NO -- Go to F13. F13 Check Circuit 601 (LB/PK) For Short to Ground