Venza FWD L4-2.7L (1AR-FE) (2009)
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Engine Control Module: Component Tests and General Diagnostics
1AR-FE ENGINE CONTROL: SFI SYSTEM: ECM Power Source Circuit
ECM Power Source Circuit
DESCRIPTION
When the ignition switch is turned to ON, the battery voltage is applied to IGSW of the ECM. The output signal from the MREL terminal of the ECM
causes a current to flow to the coil, closing the contact of the engine room junction block assembly (EFI MAIN relay) and supplying power to terminals
+B and +B2 of the ECM.
WIRING DIAGRAM
