Toyota Corolla (E120): System description

The ecm uses signals from the vehicle speed sensor and crankshaft position sensor to detect the actual gear position (1st, 2nd, 3rd or o/d gear).

Then the ecm compares the actual gear with the shift schedule in the ecm memory to detect the mechanical trouble of the shift solenoid valves, the valve body or automatic transaxle (clutch, brake or gear etc.).

Monitor description

Monitor description

The ecm commands gear shifts by turning the shift solenoid valves ”on/off”. According to the input shaft revolution, intermediate (counter) shaft revolution and output shaft revolution, the ecm detects the actual gear position (1st, 2nd, 3rd or o/d gear position). When the gear position commanded by the ecm and the actual gear position are not same, the ecm illuminates the mil.

Monitor strategy

Typical enabling conditions

Typical enabling conditions

Typical malfunction thresholds

Typical malfunction thresholds

Typical malfunction thresholds

Typical malfunction thresholds

Inspection procedure

    Share this page:

    Other materials:

    Hood
    Adjustment Hint: since the centering bolt is used as a hood hinge and hood lock set bolt, the hood and hood lock can not be adjusted with it on. Substitute a bolt with washer for the centering bolt. 1. Inspect hood sub–assy Check that the clearance is within the standard value. ...

    Listening to an iPod
    Connecting an iPod enables you to enjoy music from the vehicle speakers. Select “iPod” on the audio source selection screen. When the iPod connected to the system includes iPod video, the system can only output the sound by selecting the browse screen. Connecting an iPod Audio control scre ...

    Selecting, fast-forwarding and reversing tracks/files/songs
    ■ Selecting a track/file/song Press the “∧” or “∨” button on “SEEK/TRACK” or turn the “TUNE/ SCROLL” knob to select the desired track/file/song number. To fast-forward or reverse, press and hold the “∧” or “∨” button on “SEEK/TRACK”. ...