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

EFI Main Relay Circuit:

EFI MAIN RELAY INSPECTION

1. Remove EFI Main Relay.

2. Inspect EFI Main Relay.

A. Inspect relay continuity

Testing The EFI Main Relay:

a. Using an ohmmeter, check that there is continuity between terminals 1 and 2.

b. Check that there is no continuity between terminals 3 and 5.

If continuity is not as specified, replace the relay.

B. Inspect relay operation

Testing The EFI Main Relay:

a. Apply battery voltage across terminals 1 and 2.

b. Using an ohmmeter, check that there is continuity between terminals 3 and 5.

If operation is not as specified, replace the relay.

3. Reinstall EFI main relay.