Disconnect Brake Switch
Turn ignition off. Disconnect brake pressure switch at the proportioning valve. Check wires at brake pressure switch connector for damage. If wires damaged, repair as necessary. If no problems, proceed to QUICK TEST D30.
Turn ignition off. Disconnect brake pressure switch at the proportioning valve. Check wires at brake pressure switch connector for damage. If wires damaged, repair as necessary. If no problems, proceed to QUICK TEST D30.