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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    Road test
    1. Problem symptom confirmation Taking into consideration the results of the customer problem analysis, try to reproduce the symptoms of the trouble. If the problem is that the transaxle does not shift up, shift down, or the shift point is too high or too low conduct the following road ...

    Automatic transaxle fluid (atm)
    On–vehicle inspection 1. Check the fluid level Hint: drive the vehicle so that the engine and transaxle are at normal operating temperature. Fluid temperature: 70 – 80 °c (158 – 176 °f)  park the vehicle on a level surface and set the parking brake.  with the engin ...

    Initialization
    1. Reset memory Caution: perform the reset memory (at initialization) when replacing the automatic transaxle assy, engine assy or ecm. Notice: hand–held tester only Turn the ignition switch off.  connect the hand–held tester to the dlc3.  turn the ignition switch to th ...