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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    Monitor description
    Dtc p0451, p0452 or p0453 is recorded by the ecm when the vapor pressure sensor malfunctions. P0451 The ecm senses pressure in the fuel tank using the vapor pressure sensor. The ecm supplies the sensor with a regulated 5 v reference–voltage and the sensor returns a signal voltage betwee ...

    Circuit description
    Refer to dtc p0010 Dtc no. Dtc detection condition Trouble area P0011 Condition (a) or (b) continues after engine is warmed up and engine speed at 550 to 4,000 rpm (problem of the advanced ocv):  valve timing does not change from current valve tim ...

    Disabling the TRAC system
    If the vehicle gets stuck in mud, dirt or snow, the TRAC system may reduce power from the engine to the wheels. Pressing to turn the system off may make it easier for you to rock the vehicle in order to free it. To turn the TRAC system off, quickly press and release . The “TRAC OFF” ind ...