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): Description and Operation

Fuse Link And Relay Box:






The ECCS/EFI relay, located in the engine compartment, in the fuse and relay panel next to the battery, supplies voltage to the ECM. When the ignition key is in the ON or START position, battery voltage is supplied to the relay. This closes the relay allowing battery voltage to supplied to the ECM.