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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    Unlocking and locking the doors from the outside
    ◆ Smart key system (if equipped) Carry the electronic key to enable this function. 1 Grip the driver’s door handle to unlock the door. Grip the passenger’s door handle to unlock all the doors.* Make sure to touch the sensor on the back of the handle. The doors cannot be unlocked for ...

    Receiving a phone call
    Answering the phone Press the off-hook switch. Refusing a call Press the on-hook switch. Receiving a call when on another call Press the off-hook switch. Pressing the off-hook switch again returns you to the previous call. Adjusting the ringtone volume when receiving a call Change the ringto ...

    Heater control & accessory assy
    Replacement 1. Remove console panel upper 2. Remove instrument cluster finish panel 3. Remove heater control & accessory assy Release the 2 fitting claws and pull out the heater control & accessory assy. Using a screwdriver, open the claw of the cable clamp and dis ...