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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    Using an anchor bracket (for top tether strap) (except for Puerto Rico)
    ■ Anchor brackets (for top tether strap) Anchor brackets are provided for each rear seat. Use anchor brackets when fixing the top tether strap. Anchor brackets Top tether strap ■ Fixing the top tether strap to the anchor bracket Install the child restraint system in accordance to the opera ...

    Circuit description
    Shifting from 1st to o/d is performed in combination with on and off of the shift solenoid valve s1 and s2 controlled by ecm. If an open or short circuit occurs in either of the solenoid valves, the ecm controls the remaining normal solenoid valve to allow the vehicle to be operated smoothly ...

    Inspection procedure
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