Toyota Corolla Cross: Theft Deterrent / Keyless Entry

 ECM Power Source Circuit

DESCRIPTION When the ignition switch is turned to ON, the auxiliary battery voltage is applied to IGP of the ECM. When the transistor in the MREL circuit operates, current flows from the auxiliary battery to ground through the drive circuit of the EFI-MAIN NO. 1 relay, thus operating the relay which

 Engine Control System Malfunction (C1280)

DESCRIPTION When a malfunction has occurred in the SFI system circuit, the 4WD ECU assembly stores DTC C1280. DTC No. Detection Item DTC Detection Condition Trouble Area C1280 Engine Control System Malfunction SFI