ECU Power Supply

ECU Connector Pin Identification:

1. With ignition off, disconnect multiple pin plug from ignition ECU.
2. Turn ignition on. Using a voltmeter, measure voltage between terminals 12 and 25. Battery voltage should exist.
3. If battery voltage does not exist, measure voltage on plug connected between terminal 3 and ground at the central electric board. Battery voltage should exist.
4. If battery voltage does not exist, disconnect electronic ignition relay and bridge terminals 30 and 87. Recheck voltage as outlined in step 2. If voltage exists, replace electronic ignition relay.