Toyota Corolla (E120): Circuit description

Wiring diagram

Wiring diagram

Inspection procedure

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    Key confinement prevention function does not work properly (unlock warning switch circuit)
    Circuit description The unlock warning switch turns on when the key is inserted in the ignition key cylinder and the door courtesy switch turns on when the driver’s door is opened, and the integration relay monitors both switches conditions. According to these switches conditions, the int ...

    Inspection procedure
    Hand–held tester: 1 Perform active test by hand–held tester(operation of circuit opening relay) Connect the hand–held tester to the dlc3.  turn the ignition switch on and push the hand–held tester main switch on.  select the item ”diagnosis / enhanced obd ii / active ...

    What to do if... (Troubleshooting)
    If there is a problem with the hands-free system or a Bluetooth® device, first check the table below. ► When using the hands-free system with a Bluetooth® device ► When registering/connecting a cellular phone ► When making/receiving a call ► When using the p ...