Toyota Corolla (E120): Circuit description

When the idle switch is turned on, a signal is sent to the cruise control ecu assy. The cruise control ecu assy uses this signal to correct the discrepancy between the throttle valve position and the actuator position sensor values to enable accurate cruise control at the set speed. If the idle switch is malfunctioning, problem symptoms also occur in the engine, so also inspect the engine.

Wiring diagram

Wiring diagram

Inspection procedure

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    Engine hood/door
    Preparation Sst Recomended tools Equipment ...

    Diagnostic trouble code chart
    Terms Terms Physical address Three–digit code (shown in hexadecimal) which is given to each component comprising the avc–lan. Corresponding to the function, individual symbols are specified. Logical address Two–digit code (shown in hexadeci ...

    Diagnostic trouble code chart
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