Toyota Corolla (E120): Circuit description

Hint:

Hint

: there is a case that hand–held tester cannot be used when ecu is abnormal.

Wiring diagram

Inspection procedure

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    On–vehicle inspection
    1. Horn button assy (vehicles not involved in collision) Check the diagnostic system . visually check the following item with the horn button assy (with airbag) installed in the vehicle. Check cuts, minute cracks or marked discoloration on the horn button assy top surface and in the ...

    Engine immobilizer system
    The vehicle's keys have built-in transponder chips that prevent the engine from starting if a key has not been previously registered in the vehicle's on-board computer. Never leave the keys inside the vehicle when you leave the vehicle. This system is designed to help prevent vehicle theft but doe ...

    Windshield wiper motor assy
    Replacement 1. Remove windshield wiper arm cover 2. Remove fr wiper arm rh  operate the wiper and stop the windshield wiper motor assy at the automatic stop position.  remove a nut and fr wiper arm rh. 3. Remove fr wiper arm lh  remove a nut and fr wiper arm lh. 4 ...