lexus Workshop Repair Guides

Lexus Workshop Service and Repair Manuals

Relays and Modules - Fuel Delivery and Air Induction > < Component Inspection|Page 4629
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Main Relay (Computer/Fuel System): Testing and Inspection

1. REMOVE CIRCUIT OPENING RELAY (Marking: CIR OPN)

2. INSPECT CIRCUIT OPENING RELAY CONTINUITY

a. Using an ohmmeter, check that there is continuity between terminals 1 and 2.

If there is no continuity, replace the relay.

b. Check that there is no continuity between terminals 3 and 5.

If there is continuity, replace the relay.

3. INSPECT CIRCUIT OPENING RELAY OPERATION

a. Apply battery voltage across terminals 1 and 2.
b. Using an ohmmeter, check that there is continuity between terminals 3 and 5.

If there is no continuity, replace the relay.

4. REINSTALL CIRCUIT OPENING RELAY

Relays and Modules - Fuel Delivery and Air Induction > < Component Inspection|Page 4629