Toyota Corolla (E120): Circuit description

The door courtesy switch turns on when the door is opened and off when the door is closed.

Wiring diagram

Inspection procedure

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    For vehicles equipped with catalytic converter
    Caution: if large amount of unburned fuel flows into the converter, it may cause overheating and a fire hazard. To prevent this, observe the following precautions. Use only unleaded gasoline.  avoid prolonged idling. Avoid running the engine at idle speed for more than 20 minutes. ...

    Dialing by selecting a name
    1 Select “Phonebook” using . 2 Select the desired name using and press the off-hook switch. By pressing (Add S. Dial) and then one of the speed dial buttons (from to ) while the desired name is selected, it can be registered as a speed dial. ...

    Fail–safe chart
    If any of the following codes is recorded, the ecm enters the fail–safe mode. Check for intermittent problems Hand–held tester only: by putting the vehicle’s ecm in the check mode, the 1 trip detection logic is possible instead of the 2 trip detection logic, and the sensitivity to de ...