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
If it fails: lemon-manuals.org.ua

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

CONTROL RELAY

When the ignition switch is turned on, battery voltage is applied from the ignition switch to the ECU, turning ON the ignition power transistor and energizing the MFI control relay coil. This turns ON the MFI control relay switch, and supplies power from the battery to the ECU through the MFI control relay switch.

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

Circuit Diagram: