Toyota Corolla (E120): Circuit description

Hint:

Hint

: there is a case that hand–held tester cannot be used when ecu is abnormal.

Wiring diagram

Inspection procedure

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    For vehicles equipped with srs airbag and seat belt pretensioner
    Hint: the vehicle is equipped with an srs (supplemental restraint system), such as the horn button assembly, the instrument panel passenger airbag assembly, the front seat airbag assembly, the center airbag sensor assembly, the front airbag sensor, the side airbag sensor and the seat belt p ...

    Seat belt warning lamp for driver’s seat does not operate
    Wiring diagram Inspection procedure 1 Check combination meter assy Ground terminal c9–12 on the combination meter side. check that the warning lightlights up. Ok: warning light lights up. 2 Inspect front seat inner belt assy lh Disconnect the front seat inner belt ...

    Inspection procedure
    1 Check p/t squib(lh) circuit(airbag sensor assy center – front seat outer belt assy lh) 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 seat belt pretensio ...