Main Relay (Computer/Fuel System): Testing and Inspection

INSPECTION





1. Disconnect negative (-) terminal cable from battery.

CAUTION: Work must be started after 90 seconds from the time the ignition switch Is turned to the LOCK position and the negative (-) terminal cable is disconnected from the battery.





2. Remove Electronic Fuel Injection Main Relay.





3. Inspect Electronic Fuel Injection Main Relay Continuity.
- Using an ohmmeter check that there is continuity between terminals 1 and 2.
- Check that there is NO continuity between terminals 3 and 5.
If continuity is not as specified, replace the relay.





4. Inspect Electronic Fuel Injection Main Relay operation.
- Apply battery voltage across terminals 1 and 2.
- Using an ohmmeter check that there is continuity between terminals 3 and 5.
- If operation is not as specified replace the relay.
5. Reinstall Electronic Fuel Injection Main Relay.
6. Reconnect negative (-) terminal cable to battery.