Toyota Corolla Quiz
Diagnostics

How to proceed with troubleshooting

In this manual: Diagnostics
Introduction — 31Preparation — 32Service specifications — 19Diagnostics — 497Engine control system — 6Fuel — 13Emission control — 28Exhaust — 3Cooling — 13Lubrication — 7Ignition — 3Starting & charging — 13Front suspension — 12Rear suspension — 9Tire & wheel — 1Drive shaft / propeller shaft — 15Brake — 42Automatic transmission / trans — 47Clutch — 19Steering column — 9Power steering — 11Heater & air conditioner — 20Supplemental restraint system — 27Seat belt — 12Lighting — 18Wiper & washer — 9Audio & visual — 12Wiring — 1Communication system — 1Windshield/windowglass/mirror — 31Seat — 10Theft deterrent & door lock — 10Sliding roof/convertible — 8Engine hood/door — 12Exterior/interior trim — 20Vehicle control system — 1Cruise control — 5Maintenance — 8
~1min read

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

Test yourself

A quick Toyota Corolla quiz: every answer comes with an explanation and a link to the manual page.