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

INSPECTION

1. Remove EFI main relay.
2. Inspect EFI main relay continuity.





- Using an ohmmeter, check that there is continuity between terminals 1 and 3.
- Check that there is no continuity between terminals 2 and 4.
- If continuity is not as specified, replace the relay.

3. Inspect EFI main relay operation.





- Apply battery voltage across terminals 1 and 3.
- Using an ohmmeter, check that there is continuity between terminals 2 and 4.
- If operation is not as specified, replace the relay.
4. Reinstall EFI main relay.