toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

EFI Main Relay <--> [Main Relay (Computer/Fuel System)] > < EFI Main Relay <--> [Main Relay (Computer/Fuel System)]|Testing and Inspection
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Fuel Pump Relay: Testing and Inspection

1. REMOVE RELAY BOX COVER
2. REMOVE CIRCUIT OPENING RELAY (Marking: CIR OPN)

3. INSPECT CIRCUIT OPENING RELAY

a. Inspect the relay continuity.

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

If there is no continuity, replace the relay.

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

If there is continuity, replace the relay.

b. Inspect the relay operation.

1. Apply battery positive voltage across terminals 1 and 2.
2. Using an ohmmeter, check that there is continuity between terminals 3 and 5.

If there is no continuity, replace the relay.

4. REINSTALL CIRCUIT OPENING RELAY
5. REINSTALL RELAY BOX COVER

EFI Main Relay <--> [Main Relay (Computer/Fuel System)] > < EFI Main Relay <--> [Main Relay (Computer/Fuel System)]|Testing and Inspection