toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

Relays and Modules - Fuel Delivery and Air Induction > < Diagram Information and Instructions|Page 3720
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Main Relay (Computer/Fuel System): Testing and Inspection

EFI MAIN RELAY INSPECTION

1. Remove EFI main relay.

LOCATION: In the engine compartment relay box.

2. Inspect EFI main relay.

A. Inspect relay continuity

(a) Using an ohmmeter, check that there is continuity between terminals 1 and 3.
(b) Check that there is no continuity between terminals 2 and 4.

If continuity is not as specified, replace the relay.

B. Inspect relay operation

(a) Apply battery voltage across terminals 1 and 3.
(b) Using an ohmmeter, check that there is continuity between terminals 2 and 4.
If operation is not as specified, replace the relay.

3. Reinstall EFI main relay.

Relays and Modules - Fuel Delivery and Air Induction > < Diagram Information and Instructions|Page 3720