A3 - Anti-Lock Electronic Control Module Ground

NOTE: When checking resistance in the anti-lock system, always disconnect the battery to starter relay cable. Improper resistance may occur with the vehicle battery connected.

- Check for good anti-lock electronic control module ground:

- Remove harness connector from anti-lock electronic control module.

- Set multimeter on the 200-ohm scale.

- Check for resistance between harness connector Pin 4 and chassis ground.

- Is resistance less than 1.0 ohm?

YES -- Reconnect battery ground cable. Go to A4. [1][2]A4 - Rear ABS Light Power

NO -- Check for open in anti-lock electronic control module ground wire. Check for loose, dirty or broken connector pins. Repair as necessary. Repeat System Pre-Check. [1][2]A - Test system pre check