ECU Power Source Circuit [09/2022 - 11/2022]: Description
WARNING: This page is about a different variant/trim than selected.
When the engine switch is turned on (IG), battery voltage is applied to terminal MREL of the ECM through the coil of the EFI-MAIN relay*1 or EFI-MAIN NO. 1 relay*2. This causes the EFI-MAIN relay*1 or EFI-MAIN NO. 1 relay*2 to close, which supplies power to terminal +B of the TCM.
- *1: for TMMMS Made
- *2: for TMC Made