lexus Workshop Repair Guides

Lexus Workshop Service and Repair Manuals

Relays and Modules - Restraint Systems > < EFI Main Relay <--> [Main Relay (Computer/Fuel System)]|Locations
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EFI Main Relay: Testing and Inspection

EFI MAIN RELAY (Marking: EFI MAIN) INSPECTION 

1. REMOVE EFI MAIN RELAY
2. INSPECT EFI MAIN RELAY

A. Inspect relay continuity

(a) Using an ohmmeter, check that there is continuity between terminals 1 and 3.

If there is no continuity, replace the relay.

(b) Check that there is no continuity between terminals 2 and 4.

If there is continuity, 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 there is no continuity, replace the relay.

3. REINSTALL EFI MAIN RELAY

Relays and Modules - Restraint Systems > < EFI Main Relay <--> [Main Relay (Computer/Fuel System)]|Locations