Toyota Corolla (E120): Problem symptoms table

The suspected circuits or parts for each problem symptom are shown in the table below. Use this table to troubleshoot the problem when a normal code is displayed in the diagnostic trouble code chart but the problem is still occurring. Numbers in the table indicate the order in which the circuits or parts should be checked.

Hint: when the problem is not detected by the diagnostic system even though the problem symptom is present, it may be that the problem is occurring outside the detection range of the diagnostic system.

Circuit inspection

    Share this page:

    Other materials:

    Circuit description
    The throttle pressure that is applied to the primary regulator valve (which modulates the line pressure) causes the solenoid valve slt, under electronic control, to precisely and minutely modulate and generate the line pressure according the extent of the accelerator pedal depressed or the o ...

    Locking the doors from the outside without a key
    1 Move the inside lock button to the lock position. 2 Close the door. ► Vehicles without a smart key system The door cannot be locked if either of the front doors is open and the key is in the engine switch. ► Vehicles with a smart key system The door cannot be locked if the engin ...

    Driving monitor
    ■ Switching the display Items displayed can be switched by pressing the “DISP” switch. ■ Average fuel consumption Displays the average fuel consumption since the function was reset. • Press and hold the “DISP” switch to reset when the average fuel consumption is display ...