Toyota Corolla (E120): Communication system

Preparation

Recomended tools

Equipment

Equipment

Windshield/windowglass/mirror

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    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 ...

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