Abs Ecu
- Ensure ignition is off. Connect a voltmeter between terminals No. 1 and 2 of ABS ECU connector. Turn ignition on. If voltage is more than 10 volts, ABS ECU power supply is okay. If voltage is less than 10 volts, go to next step. If voltage is present and ABS ECU is not functioning, ABS ECU may be faulty.
- Check battery condition. Check White wire between ABS ECU terminal No. 2 and ignition switch. Also, check ABS ECU terminal No. 1 Black wire for an open circuit to ground. Repair as necessary.