Toyota Corolla Repair Manual: How to proceed with troubleshooting
1 Vehicle brought to workshop
2 Customer problem analysis
3 Check and clear dtcs and freeze frame data
4 Problem symptom confirmation
Symptom does not occur: go to
step 5
Symptom occurs: go to step 6
5 Symptom simulation
6 Dtc check
There is no output: go to step 7
There is output: go to step 8
7 Problem symptoms table
Check for fluid leakage and go
to step 10
8 Dtc chart
9 Circuit inspection
Hint
: when 2 or more dtc’s are recorded, and the problem is not identified, perform circuit inspection of the other dtc’s.
10 Identification of problem
11 Repair
12 Comfirmation test
End
Hint
: step 3, 6, 9, 12: diagnostic steps permitting the use of the hand–held tester.
Fail safe function:
when a failure occurs in the abs system, the abs warning light is lit and the abs operation is prohibited.
In addition to this, when the failure which disables the ebd operation occurs, the brake warning light is lit as well and the ebd operation is prohibited.
Other materials:
Towing with a wheel-lift type truck
► From the front
Release the parking brake.
► From the rear
Use a towing dolly under the front wheels.
Vehicles without a smart key system: When not using a towing dolly, turn the
engine switch to the “ACC” position and shift the shift lever to N.
Vehicles with a smart key sys ...
Engine mechanical
Service data
Torque specification
...
Data list/active test
1. Data list
Hint:
using the data list displayed by the hand–held tester or the obd ii scan tool,
you can read the value of
the switches, sensors, actuators and so on without parts removal. Reading the
data list as a first step
of troubleshooting is one method to shorten diagnostic time.
...
