Toyota Corolla (E120): How to proceed with troubleshooting

1 Vehicle brought to workshop

2 Customer problem analysis

2 Customer problem analysis

3 Problem symptom confirmation

3 Problem symptom confirmation

4 Circuit inspection

4 Circuit inspection

5 Repair or replace

5 Repair or replace

6 Confirmation test

6 Confirmation test

7 End

7 End

Customer problem analysis check

Location

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    On–vehicle inspection
    1. Inspection throttle body idle speed control valve assy Notice: it is impossible to check the resister value and the operation of isc valve by itself, because the isc valve has an ic circuit inside it, which transforms the duty signal from the ecm to the derive signal. After check ...

    Optimal use of the multimedia system
    On the “Sound Settings” screen, sound quality (Treble/Mid/ Bass), volume balance can be adjusted. How to adjust the sound settings and sound quality 1 2 3 Select “-” or “+” to adjust the treble, mid or bass to a level between -5 and 5. 4 5 Select “Front” or “Rear” to adjus ...

    Operating instructions
    Turning the end of the lever turns on the lights as follows: ► Type A 1 The daytime running lights turn on. 2 The side marker, parking, tail, license plate, daytime running lights and instrument panel lights turn on. 3 The headlights and all the lights listed above (except daytime ...