Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Power door lock control system / How to proceed with troubleshooting
Toyota Corolla (E120): How to proceed with troubleshooting
1 Vehicle brought in
2 Customer problem analysis check and symptom check
3 Problem symptoms table
- Without applicable symptoms, proceed to ”a”
- with applicable symptoms, proceed to ”b”
4 Perform troubleshooting in the following method, depending on malfunction symptom
- Terminals of ecu
- inspection
- on–vehicle inspection
5 Adjustment, repair or replacement
End
Customer problem analysis check
Location
Other materials:
Ecu power source circuit
Circuit description
This circuit provides power to operate the tvip ecu.
Wiring diagram
Inspection procedure
1 Check fuse (ecu–b)
Remove the fuse from the instrument panel j/b.
check the continuity of the fuse.
Standard: continuity
2 Check tvip ecu
Disconnect ...
Seat heaters
Press the switch.
1 High temperature
2 Low temperature
The indicator light comes on when the switch is on.
■The seat heaters can be used when
► Vehicles without a smart key system
The engine switch is in the “ON” position.
►Vehicles with a smart key system
The engine ...
Problem symptoms table
Proceed to the reference page shown in the table below for each malfunction
symptom and troubleshoot
each circuit.
Hint:
troubleshooting of the tvip system is based on the premise that the door lock
control system and wireless
door lock control system is operating normally. Accordingly, be ...