Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Supplemental restraint system / How to proceed with troubleshooting
Toyota Corolla (E120): How to proceed with troubleshooting
The hand–held tester can be used at step 4, 6, 8 and 9.
1 Vehicle brought to workshop

2 Customer problem analysis

3 Warning light check

4 The dtcs check (present and past dtcs)

5 The dtcs chart

6 Circuit inspection

7 Repair

8 Clear the dtcs (present and past dtcs)

9 The dtcs check (present and past dtcs)

10 Symptom simulation

11 Confirmation test

End
Customer problem analysis check

Other materials:
Wiring
Power source
Location
...
Checking tires
Check if the treadwear indicators
are showing on the tires.
Also check the tires for uneven
wear, such as excessive wear
on one side of the tread.
Check the spare tire condition
and pressure if not rotated.
New tread
Worn tread
Treadwear indicator
The location of treadwear indicators
is show ...
Data list/active test
1. Data list
Hint:
according to the data list displayed by the obd ii scan tool or hand–held
tester, you can read the value
of the switch, sensor, actuator and so on without parts removal. Reading the
data list as the first step of
troubleshooting is one method to shorten labor time.
W ...


