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
Other materials:
Inspection procedure
1 Check hazard warning signal switch assy
Check the hazard warning switch continuity, as shown in
the illustration and table.
Standard:
2 Check turn signal flasher assy
3 Check wire harness (tvip ecu turn signal flasher)
Disconnect the tvip ecu and turn signal flashe ...
Emission inspection and maintenance (I/M) programs
Some states have vehicle
emission inspection programs
which include OBD
(On Board Diagnostics)
checks. The OBD system
monitors the operation of
the emission control system.
If the malfunction indicator
lamp comes on
The OBD system determines
that a problem exists somewhere
in the emission control
sy ...
If a warning light turns on or a
warning buzzer sounds
Calmly perform the following actions if any of the warning
lights comes on or flashes. If a light comes on or flashes, but
then goes off, this does not necessarily indicate a malfunction
in the system. However, if this continues to occur, have the
vehicle inspected by your Toyota dealer.
Actions to ...