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Toyota Corolla Repair Manual: How to proceed with troubleshooting

Toyota Corolla Repair Manual / Diagnostics / Sfi system / How to proceed with troubleshooting

The handheld tester can be used at step 3, 4, 5, 7, 10.

1 Vehicle brought to workshop

2 Customer problem analysis

2 Customer problem analysis

3 Connect handheld tester to dlc3

3 Connect handheld tester to dlc3

Hint

: if the display indicates a communication fault in the tool, inspect dlc3.

4 Check dtc and freeze frame data

4 Check dtc and freeze frame data

Hint

: record or print dtc and freeze frame data, if needed.

5 Clear dtc and freeze frame data

5 Clear dtc and freeze frame data

6 Visual inspection

6 Visual inspection

7 Setting check (test) mode diagnosis

7 Setting check (test) mode diagnosis

8 Problem symptom confirmation

8 Problem symptom confirmation

Hint

: if the engine does not start, perform steps 10 and 12 first.

A Malfunction does not occur
B Malfunction occurs

B go to step 10

9 Symptom simulation

9 Symptom simulation

10 Dtc check

10 Dtc check

A Malfunction code
B No code

B go to step 12

11 Dtc chart

11 Dtc chart

Go to step 14

Go to step 14

12 Basic inspection

A Wrong parts not confirmed
B Wrong parts confirmed

B go to step 17

13 Problem symptoms table

13 Problem symptoms table

A Wrong circuit confirmed
B Wrong parts confirmed

B go to step 17

14 Check ecm power source circuit

14 Check ecm power source circuit

15 Circuit inspection

15 Circuit inspection

A Malfunction not confirmed
B Malfunction confirmed

B go to step 18

16 Check for intermittent problems

16 Check for intermittent problems

Go to step 18

Go to step 18

17 Parts inspection

18 Identification of problem

18 Identification of problem

19 Adjustment, repair

19 Adjustment, repair

20 Confirmation test

20 Confirmation test

End

End

Sfi system
...

Customer problem analysis check
...

Other materials:

Front door belt moulding assy lh
Replacement Hint: the installation procedures are the removal procedures in reverse order. Use the same procedures for the rh side and lh side. 1. Remove front armrest assy lh 2. Remove power window regulator master switch assy (w/ power window) 3. Remove front armrest base panel up ...

Inspection procedure
Hint: if dtc p0441 (purge flow), p0446 (vsv for ccv or vsv for pressure switching valve), p0451, p0452 or p0453  is output with dtc p0442 or p0456 , first troubleshoot dtc p0441, p0446, p0451, p0452 or p0453. If no malfunction is detected, troubleshoot dtc p0442 or p0456 next. ...

Inspection procedure
1 Input signal check See input signal check on page 05745. check indicator light operation when driving with vehicle speed above 40 km/h (25 mph), and with vehicle speed below 40 km/h (25 mph). Ok: vehicle speed above 40 km/h (25 mph): indicator light blinks vehicle speed belo ...

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