Resistance Tests

Fig. 63 Checking ECM Terminal Resistance:

Caution Never touch terminals of ECM itself or connect voltmeter or ohmmeter. Be sure to connect ohmmeter probe from wire harness side of coupler. Be sure igntion switch is OFF. Resistance in table represents that when ambient temperature is 20°C (68°F).


1. With ignition switch Off, disconnect ECM couplers from ECM.
2. Check resistance between each pair of terminals of disconnected couplers.