ECM Power Source Circuit [11/2022 - 03/2023]: Description
WARNING: This page is about a different variant/trim than selected.
When the ignition switch is turned to ON, the battery voltage is applied to the IGP terminal of the ECM. The output signal from the MREL terminal of the ECM causes current to flow to the coil of the EFI-MAIN NO. 1 relay, closing the contacts of the EFI-MAIN NO. 1 relay and supplying power to terminals +B and +B2 of the ECM.