RAV4 2WD L4-2.5L (2AR-FE) (2009)
Engine Control Module: Component Tests and General Diagnostics
2AR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: ECM Power Source Circuit
ECM Power Source Circuit
DESCRIPTION
When the ignition switch is turned to ON, 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 contacts of the integration relay (EFI MAIN relay) and supplying power to either terminal +B or +B2 of
the ECM.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTE: Inspect the fuses of circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - BATTERY)