toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

Sensors and Switches - Fuel Delivery and Air Induction > < EFI Main Relay <--> [Main Relay (Computer/Fuel System)]|Locations|Page 3420
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Supercharger Clutch Relay: Testing and Inspection

SUPERCHARGER CLUTCH RELAY INSPECTION

1. Remove supercharger relay.
2. Inspect starter relay.

A. Inspect relay continuity. 

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

If there is no continuity, replace the relay.

B. Inspect relay operation.

(a) Apply battery voltage across terminals 3 and 4.
(b) Using an ohmmeter, check that there is continuity between terminals 1 and 2. If there is no continuity, replace the relay. 

3. Reinstall supercharger relay.

Sensors and Switches - Fuel Delivery and Air Induction > < EFI Main Relay <--> [Main Relay (Computer/Fuel System)]|Locations|Page 3420