Resistance Tests

Measuring Resistance At ECM Connector:

Resistance At ECM Connectors:

The ECM and it's circuits can be checked at the ECM terminals by measuring voltage and resistance.

CAUTION: The ECM cannot be checked by itself. Never connect a DVOM to the ECM pins without the harness connected.


RESISTANCE CHECKS
- Remove ECM from body.
- Disconnect harness from ECM.
- Check voltage at back side of harness connector.