ECM Power Source Circuit
ECM Power Source CircuitCIRCUIT DESCRIPTION
When the ignition switch is turned ON, battery positive voltage is applied to the coil, closing the contacts of the EFI main relay (Marking: EFI) and supplying power to terminal +B of the ECM.
Wiring Diagram:
Steps 1 - 3:
Steps 4 - 6:
Steps 7 - 9:
INSPECTION PROCEDURE