Toyota Corolla (E120): Circuit description

This circuit turns on the magnetic clutch inside the actuator during cruise control operation according to the signal from the ecu. If a malfunction occurs in the actuator or speed sensor, etc. During cruise control operation, the rotor shaft between the motor and control plate is released.

When the brake pedal is depressed, the stop lamp switch assy turns on, supplying electrical power to the stop light. Power supply to the magnetic clutch is mechanically cut and the magnetic clutch is turned off.

When driving downhill, if the vehicle speed exceeds the set speed by 8 km/h (5 mph), the ecu turns the safety magnet clutch off. If the vehicle speed later drops to within 5 km/h (3 mph) above the set speed, then cruise control at the set speed is resumed.

Wiring diagram

Wiring diagram

Inspection procedure

    Share this page:

    Other materials:

    Diagnostics
    Preparation Sst 09816–30010 Oil pressure switch socket Sfi system 09843–18040 Diagnosis check wire no.2 Sfi system supplemental restraint system Recomended tools 09082–00040 Toyota electrical tester Sfi system supplemen ...

    Replacement
    Hint: components: 1. Precaution 2. Disconnect battery negative terminal 3. Remove seat track upper rail cover rh 4. Remove seat track upper rail cover lh 5. Remove front seat assy lh 6. Remove seat position air bag sensor Disconnect the connector of the seat position airbag sensor. ...

    If your vehicle has to be stopped in an emergency
    Only in an emergency, such as if it becomes impossible to stop the vehicle in the normal way, stop the vehicle using the following procedure: 1 Steadily step on the brake pedal with both feet and firmly depress it. Do not pump the brake pedal repeatedly as this will increase the effort required ...