Toyota Corolla (E120): How to proceed with troubleshooting

1 Vehicle brought to workshop

2 Customer problem analysis

2 Customer problem analysis

3 Check and clear dtc

3 Check and clear dtc

4 Problem symptom confirmation

4 Problem symptom confirmation

5 Symptom simulation

5 Symptom simulation

6 Dtc check

6 Dtc check

7 Dtc chart

7 Dtc chart

8 Problem symptoms table

8 Problem symptoms table

9 Circuit inspection

9 Circuit inspection

10 Identification of problem

10 Identification of problem

11 Parts inspection

11 Parts inspection

12 Repair

12 Repair

13 Confirmation test

13 Confirmation test

End

End

Customer problem analysis check

Pre–check

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    Circuit description
    1 Check p squib circuit(airbag sensor assy center – instrument panel passenger airbag assy) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the airbag sensor assy center and the instrument panel ...

    Inspection
    1. Inspect sliding roof limit switch Inspect the sliding roof limit switch continuity. Standard: If the continuity is not as specified, replace the switch. 2. Inspect sliding roof drive gear sub–assy Connect the positive (+) lead from the battery to terminal 2 and the ne ...

    Replacement
    Hint: installation is in the reverse order of the removal. But the installation is indicated only when it has a point. 1. Remove rear door opening trim rh 2. Remove rear door opening trim lh 3. Remove rear seat cushion assembly ( or 72–8) 4. Remove rear seat back assy (fixed type rear seat) ...