Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Main Relay (Computer/Fuel System): Testing and Inspection

MAIN RELAY OPERATION INSPECTION
1. Verify that the main relay clicks when the ignition switch is turned to ON and OFF.
2. If there is no operation sound, inspect the main relay for function, harness, and connectors between ignition switch and main relay.

MAIN RELAY INSPECTION
1. Remove the main relay.







2. Check for continuity between terminals of the relay by using an ohmmeter.




3. If not as specified, replace the main relay.