Toyota Corolla (E120): How to proceed with troubleshooting

The hand–held tester can be used at step 3, 4, 6, 9.

1 Vehicle brought to workshop

2 Customer problem analysis

2 Customer problem analysis

3 Connect the obd ii scan tool or hand–held tester to dlc3

3 Connect the obd ii scan tool or hand–held tester to dlc3

4 Check and clear dtc and freeze frame data

4 Check and clear dtc and freeze frame data

5 Visual inspection

5 Visual inspection

6 Setting the check mode diagnosis

6 Setting the check mode diagnosis

7 Problem symptom confirmation

7 Problem symptom confirmation

step 8Symptom does not occur: go to step 8

8 Symptom simulationSymptom occur: go to step 9

8 Symptom simulation

9 Dtc check

9 Dtc check

Dtc is output: go to step 18Dtc is not output: go to step 10

10 Basic inspectionDtc is output: go to step 18

10 Basic inspection

11 Mechanical system test

11 Mechanical system test

12 Hydraulic test

12 Hydraulic test

13 Manual shifting test

13 Manual shifting test

14 Problem symptoms table chapter 1

14 Problem symptoms table chapter 1

15 Problem symptoms table chapter 2

15 Problem symptoms table chapter 2

16 Problem symptoms table chapter 3

16 Problem symptoms table chapter 3

17 Part inspection

17 Part inspection

18 Dtc chart Go to step 20

18 Dtc chart

19 Circuit inspection

19 Circuit inspection

20 Identification of problem

20 Identification of problem

21 Repair

21 Repair

22 Confirmation test

22 Confirmation test

End

End

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