Toyota Corolla Cross: Cellular Communication

 ECM Power Source Circuit

DESCRIPTION When the ignition switch is turned to ON, the auxiliary battery voltage is applied to the IGSW 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 sup

 Changing the engine switch positions

OFF ("LOCK" position) The key can be removed. (The key can be removed only when the shift lever is in P.) ACC ("ACC" position) Some electrical components such as the audio system can be used. ON ( "ON" position) All electrical components can be used. START ( "START" position) For starti