GS 450h V6-3.5L (2GR-FSE) Hybrid (2007)
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Engine Control Module: Component Tests and General Diagnostics
ECM Power Source Circuit
DESCRIPTION
When the power switch is turned ON (IG), the battery voltage is applied to the IGSW of the ECM. The output signal from the MREL terminal of the
ECM causes a current to flow to the coil, closing the contacts of the integration relay (EFI MAIN relay) and supplying power to either terminal +B or
+B1 of the ECM.
Wiring Diagram
