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:
Introductions
4. Anti-rust treatment after installation
(A) body sealer application
Purpose:
for water-proofing and anti-rust measures, always
apply the body sealer to the body panel seams and
hems of the doors, hood, etc.
Notice:
apply body sealer neatly to parts that require a
high quality appeara ...
Inspection procedure
1 Check side air bag sensor assy lh
Sst 09843–18040
Connect the negative (–) terminal cable to the battery,
and wait at least for 2 seconds.
turn the ignition switch to on, and wait at least for 20 seconds.
clear the dtc stored in memory .
turn the ignition swi ...
Monitor description
The battery supplies electricity to the ecm even when the ignition switch is
off. This electricity allows the
ecm store data such as dtc history, freeze frame data, fuel trim values, and
other data. If the battery voltage
falls below a minimum level, the ecm will conclude that there is a fault ...


