Toyota Corolla (E120): Circuit description

Wiring diagram

Wiring diagram

Inspection procedure

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    Body rocker panel moulding lh
    Replacement Hint: use the same procedures for the rh side and lh side. 1. Remove body rocker panel moulding lh Remove the 8 retainers.  using a screwdriver, remove the moulding. Hint: tape the screwdriver tip before use.  remove the 7 clips from the moulding. 2. Insta ...

    Symptom simulation
    Hint: the most difficult case in troubleshooting is when no symptoms occurs. In such cases, a thorough customer problem analysis must be carried out. Then the same or similar conditions and environment in which the problem occurred in the customer’s vehicle should be simulated. No matter ho ...

    Circuit description
    The rear heated oxygen sensor is used to monitor oxygen concentration in the exhaust gas. For optimum catalytic converter operation, the air fuel mixture must be maintained near the ideal ”stoichiometric” ratio. The heated oxygen sensor output voltage changes suddenly in the vicinity of ...