Toyota Corolla (E120): Circuit description

If the ignition switch is turned to the on position, battery positive voltage is applied to the switches, such as terminal ig of the ecu.

Wiring diagram

Inspection procedure

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    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. ...

    On–vehicle inspection
    1. Inspect front axle hub bearing  remove the front wheel.  separate the front disc brake caliper assy .  remove the front disc.  inspect the bearing backlash. Using a dial indicator, check the backlash near the center of the axle hub. Maximum: 0.05 Mm (0. ...

    Diagnostic trouble code chart
    Hint: when the srs warning light remains lit up and the dtc is the normal code, this means a voltage source drops. This malfunction is not stored in memory by the airbag sensor assy center and if the power source voltage returns to normal, the srs warning light will autom ...