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

1. Remove cover from main fuse block.
2. Place a finger on main relay.




3. Verify that relay clicks when ignition switch is turned ON.

4. Verify that main relay clicks when ignition switch is turned ON and OFF.
5. Apply battery voltage (B+) to terminal 85 and ground terminal 86 of the relay.




6. Check continuity of relay as shown.

7. If not as specified, replace main relay.
8. Turn ignition switch OFF.
9. Replace the cover on main fuse block.