Toyota Corolla (E120): Circuit description

The key unlock warning switch comes on when the ignition key is inserted in the key cylinder and goes off when the ignition key is removed.

Wiring diagram

Inspection procedure

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    Engine assembly
    Inspection 1. Inspect coolant 2. Inspect engine oil 3. Inspect battery 4. Inspect air cleaner filter element sub–assy 5. Inspect spark plug 6. Inspect fan and generator v belt Hint: you don’t need to check the belt deflection because auto tensioner is adopted. 7. Inspect ignition ti ...

    Inspection procedure
    1 Check d squib circuit(airbag sensor assy center – horn button assy) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the airbag sensor assy center and the horn button assy. release the airbag ...

    On–vehicle inspection
    1. Washer motor Operation check pour the water into the washer jar with the washer motor and the pump installed to the washer jar assy.  Connect the battery (+) to terminal 2 of the washer motor and the pump, the battery (–) to terminal 1 of the washer motor and the pump ...