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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    On–vehicle inspection
    Notice: ”cold” and ”hot” in these sentences express the temperature of the coils themselves. ”Cold” is from –10 c (14 f) to 50 c (122 f) and ”hot” is from 50 c (122 f) to 100 c (212 f). 1. Inspect ignition coil (with igniter) and spark test  confirm dtc. Notice: ...

    Front passenger occupant classification system
    Your vehicle is equipped with a front passenger occupant classification system. This system detects the conditions of the front passenger seat and activates or deactivates the devices for the front passenger. 1 SRS warning light 2 Seat belt reminder light 3 “AIR BAG OFF” indicator light ...

    Replacement
    1. Work for preventing gasoline from spilling out 2. Remove front wheels 3. Remove engine under cover rh 4. Remove engine under cover lh 5. Drain coolant 6. Remove cylinder head cover no.2 Remove the 2 nuts, 2 clips and cylinder head cover. 7. Disconnect radiator hose inlet &nb ...