lexus Workshop Repair Guides

Lexus Workshop Service and Repair Manuals

Relays and Modules - Fuel Delivery and Air Induction > < Diagram Information and Instructions|Page 2644
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Main Relay (Computer/Fuel System): Testing and Inspection

INSPECTION

1. Remove EFI Main Relay located In the engine compartment relay box.
2. Inspect relay continuity.

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

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Check that there is NO continuity between terminals 3 and 5.

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If continuity is not as specified, replace the relay.

3. Inspect relay operation.

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Apply battery voltage across terminals 1 and 2.

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Using an ohmmeter, check that there is continuity between terminals 3 and 5.

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If operation is not as specified, replace the relay.

4. Reinstall EFI Main Relay.

Relays and Modules - Fuel Delivery and Air Induction > < Diagram Information and Instructions|Page 2644