Toyota RAV4 Service Manual: Front power seat control system
Parts location
System diagram
Problem symptoms table
Hint:
Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "suspected area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
On-vehicle inspection
- Check power seat function
- Check the basic functions.
- Operate the power seat switches and check to make sure each seat function works:
- Sliding
- Front vertical
- Lifter
- Reclining
- Lumbar support
- Check front seat frame with adjuster (sliding, front vertical, lifter and reclining functions)
- Check the ptc operation inside the power seat motor.
Hint:
The ptc thermistor's resistance increases when the power seat switch is held down even after the power seat has been moved to the maximum in one direction. If the resistance increases beyond a specified level, current is cut to prevent a short circuit.
Notice:
- The inspection should be performed with the seat installed in the vehicle.
- Perform the 4 steps below for the full range of motion for each power seat function.
- Choose a power seat function. Operate the power seat switch and move the seat as much as possible in one direction. Keep the seat in that position for approximately 60 seconds.
- Operate the power seat switch again and continue to try to move the seat in the same direction as in the previous step. Measure the amount of time elapsed before current is automatically cut (the sound of the motor has stopped).
Standard: 4 to 90 seconds
- After current has been cut, release the power seat switch and wait for approximately 60 seconds.
- Operate the same power seat switch and move the seat in the opposite direction. Check that the motor operates.
- Check lumbar support adjuster assembly
- Check the ptc operation inside the power seat motor.
Notice:
The inspection should be performed with the seat installed in the vehicle.
- Operate the lumbar support switch and move the lumbar support to either the foremost or rearmost position. Keep the seat in that position for approximately 60 seconds.
- Operate the lumbar support switch again and
continue to try to move the lumbar support in
the same direction as in the previous step.
Measure the amount of time elapsed before current is automatically cut (the sound of the motor has stopped).
Standard: 4 to 90 seconds
- After current has been cut, release the lumbar support switch and wait for approximately 60 seconds.
- Operate the lumbar support switch and move the seat in the opposite direction. Check that the motor operates.
Seat
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Seat heater system
Parts location
System diagram
Problem symptoms table
Hint:
Use the table below to help determine the cause of the
problem symptom. The potential causes of the symptoms are
listed in orde ...
Other materials:
Data list / active test (2006/01- )
Read data list
Hint:
Using the intelligent tester's data list allows switch,
sensor, actuator and other item values to be read without
removing any parts. Reading the data list early in
troubleshooting is one way to save time.
Connect the intelligent tester (with can vim) to the
...
Check mode procedure
Hint:
Intelligent tester only:
compared to normal mode, check mode is more sensitive to
malfunctions. Therefore, check mode can detect the
malfunctions that cannot be detected by normal mode.
Notice:
All the stored dtcs and freeze frame data are erased if:
The ecm is changed from normal mo ...
Problem symptoms table (2005/11-2006/01)
Hint:
Use the table below to help determine the cause of the
problem symptom. The potential causes of the symptoms are
listed in order of probability in the "suspected area" column
of the table. Check each symptom by checking the suspected
areas in the order they are listed. Replace p ...