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Toyota Corolla Repair Manual: Power door lock control system

Toyota Corolla Repair Manual / Diagnostics / Power door lock control system

Symptom

Suspected area

All doors are not operated by drivers door key cylinder interlocked with key
  1. Door lock control switch
  2. Front door lock assy lh
  3.  Wire harness
  4. Integration relay
Key confinement prevention function does not work properly (unlock warning switch circuit)
  1. Unlock warning switch assy
  2. Front door courtesy lamp switch assy
  3.  Wire harness
  4.  Integration relay
The ambient temperature does not display
Wiring diagram Inspection procedure 1 Inspect outer ambient temperature sensor Remove cooler (ambient temp. Sensor) thermistor.  measure resistance between terminals 1 and 2 of co ...

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 ...

Other materials:

Onvehicle inspection
1. Inspect speedometer  check the operation. Using a speedometer tester, inspect the speedometer fro allowable indication error and check the operation of the odometer. Reference: Notice: tire wear and tire over or under inflation will increase the indication error. ...

Symptom simulation
Hint: the most difficult case in troubleshooting is when no symptoms occurs. In such cases, a thorough customer problem analysis must be carried out. Then the same or similar conditions and environment in which the problem occurred in the customers vehicle should be simulated. No matter how ...

Outside vehicle
General maintenance Performing these maintenance checks on the vehicle in the owners responsibility. The owner may perform the maintenance or take the vehicle to a service center. Check the parts of the vehicle described below on a daily basis. In most cases, special tool are not required ...

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