toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

Sensors and Switches - Computers and Control Systems > < Component Tests and General Diagnostics|Page 1643
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EFI Main Relay: Testing and Inspection

1. REMOVE EFI MAIN RELAY (Marking: EFI)

2. 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 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.

3. REINSTALLER MAIN RELAY

Sensors and Switches - Computers and Control Systems > < Component Tests and General Diagnostics|Page 1643