Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Sfi system / How to proceed with troubleshooting
Toyota Corolla (E120): How to proceed with troubleshooting
The hand–held tester can be used at step 3, 4, 5, 7, 10.
1 Vehicle brought to workshop
2 Customer problem analysis
3 Connect hand–held tester to dlc3
Hint
: if the display indicates a communication fault in the tool, inspect dlc3.
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
6 Visual inspection
7 Setting check (test) mode diagnosis
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
10 Dtc check
| A | Malfunction code |
| B | No code |
B go to step 12
11 Dtc chart
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
| A | Wrong circuit confirmed |
| B | Wrong parts confirmed |
B go to step 17
14 Check ecm power source circuit
15 Circuit inspection
| A | Malfunction not confirmed |
| B | Malfunction confirmed |
B go to step 18
16 Check for intermittent problems
Go to step 18
17 Parts inspection
18 Identification of problem
19 Adjustment, repair
20 Confirmation test
End
Other materials:
Inspection procedure
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 ...
Dialing
1 Display the phone screen. 2 Select the “Dial Pad” tab and enter a phone number.
To delete the input phone number, select
.
For the first digit, you can enter “+” by selecting “*” for a while.
3 Press the switch on the steering
wheel or select . ...
Circuit description
When a misfire occurs in the engine, hydrocarbons (hc) enter the exhaust in
high concentrations. If this hc
concentration is high enough, there could be an increase in exhaust emissions
levels. High concentrations
of hc passing through the catalyst also cause to temperature of the catalyst to ...