Toyota Corolla (E120): Circuit description

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

Wiring diagram

Inspection procedure

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    Tire information
    Typical tire symbols ► Full-size tire ► Compact spare tire 1 Tire size 2 DOT and Tire Identification Number (TIN) 3 Uniform tire quality grading For details, see “Uniform Tire Quality Grading” that follows. 4 Location of treadwear indicators 5 Tire ply composition and ma ...

    Changing the engine switch positions
    1 “LOCK” The steering wheel is locked and the key can be removed. (Vehicles with an automatic transmission or continuously variable transmission: The key can be removed only when the shift lever is in P.) 2 “ACC” Some electrical components such as the audio system can be used. 3 “ON ...

    Monitor description
    Dtc p0451, p0452 or p0453 is recorded by the ecm when the vapor pressure sensor malfunctions. P0451 The ecm senses pressure in the fuel tank using the vapor pressure sensor. The ecm supplies the sensor with a regulated 5 v reference–voltage and the sensor returns a signal voltage betwee ...