Toyota Corolla (E120): Circuit description

This is the power source of the ecu, hence the actuators.

Wiring diagram

Wiring diagram

Inspection procedure

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    Oxygen / af sensor heater monitor
    Preconditions The monitor will not run unless: mil is off  drive pattern  connect the obd ii scan tool to the dlc3 to check monitor status and preconditions.  Start the engine and allow it to idle for 9 minutes.  Drive the vehicle at 25 mph (40 km ...

    If the vehicle battery is discharged
    The following procedures may be used to start the engine if the vehicle's battery is discharged. You can also call your Toyota dealer or a qualified repair shop. Restarting the engine If you have a set of jumper (or booster) cables and a second vehicle with a 12-volt battery, you can jump start you ...

    Definition of terms
    Term Definition Monitor description Description of what the ecm monitors and how it detects malfunction (monitoring purpose and its details). Related dtcs Diagnostic code Typical enabling condition Preconditions that allow the ecm to detect m ...