ECM Power Source Circuit

CIRCUIT DESCRIPTION
When the ignition switch is turned ON, battery positive voltage is applied to 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:

Step 4:

Steps 5 - 7:

Step 8:

INSPECTION PROCEDURE