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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    General information
    There are many ecu controlled systems used in the corolla. In general, ecu controlled system are considered to be very intricate and require a high level of technical knowledge and expert skill to troubleshoot. The fact is, however, that if you proceed by inspecting the circuits one by one, ...

    Inspection
    1. Spark plug Notice: never use a wire brush for cleaning. Never attempt to adjust the electrode gap on used spark plug. Spark plug should be replaced every 192,000 km (120,000 miles). Clean the spark plugs. Air pressure: below 588 kpa (6.0 Kg/cm2, 85 psi) duration: 20 sec ...

    Problem symptoms table
    If a normal code is displayed during the dtc check but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting page. Notice: when replacing skid control ecu, sensor or etc., Turn the ignition swi ...