Toyota Corolla (E120): Circuit description

Monitor description

Monitor description

The ecm commands gearshift by turning the shift solenoid valves ”on/off”. When there is an open or short circuit in any shift solenoid valve circuit, the ecm detects the problem and the mil comes on. Illuminating the mil, the ecm performs the fail–safe and turns the other shift solenoid valves in good condition ”on/off” (in case of an open or short circuit, the ecm stops sending current to the circuit.).

Monitor strategy

Typical enabling condition

Typical enabling condition

Typical malfunction thresholds

Typical malfunction thresholds

Component operating range

Component operating range

Wiring diagram

Wiring diagram

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    Inspection procedure
    Hint: hand–held tester only: narrowing down the trouble area is possible by performing ”a/f control” active test (heated oxygen sensor or other trouble areas can be distinguished). Perform active test using hand–held tester (a/f control). Hint: ”a/f control” is the active te ...

    Cleaning and protecting the vehicle exterior
    Perform the following to protect the vehicle and maintain it in prime condition: ● Working from top to bottom, liberally apply water to the vehicle body, wheel wells and underside of the vehicle to remove any dirt and dust. ● Wash the vehicle body using a sponge or soft cloth, such a ...

    Replacement
    1. Remove battery 2. Remove battery carrier Remove the 4 bolts and battery carrier. 3. Disconnect floor shift cable transmission control shift Remove the nut from the control shaft lever.  disconnect the control cable from the control shaft lever.  remove the clip a ...