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Toyota Workshop Service and Repair Manuals

Sensors and Switches - Computers and Control Systems > < Main Relay (Computer/Fuel System)|Locations|Page 2703
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Main Relay (Computer/Fuel System): Testing and Inspection

INSPECTION

1. REMOVE RELAY BOX COVER

2. REMOVE EFI MAIN RELAY (Marking: EFI)

3. INSPECT EFI MAIN 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 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 EFI MAIN RELAY
5. REINSTALL RELAY BOX COVER

Sensors and Switches - Computers and Control Systems > < Main Relay (Computer/Fuel System)|Locations|Page 2703