Checking Ground Connections
- Turn ignition off. Remove fuse No. 24. Connect Breakout Box (999-3070) to ECU. See Figure . Connect ohmmeter between ground and terminals No. 19, 24, 26, 30 and 48. Resistance should be about zero ohms on all measurements.
- Check power unit ground connections under each power unit. Connect an ohmmeter between ground and terminal No. 4 on front power unit connector and then on rear power unit connector.
- Ohmmeter should indicate about zero ohms in both cases. If ohmmeter does not indicate about zero ohms in both cases, check connectors and wiring.