Toyota RAV4 (XA40) 2013-2018 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.
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:
Ts and cg terminal circuit
Description
If the vehicle is stationary during sensor check mode, speed sensor
malfunctions cannot be detected. The
vehicle must be driven for speed sensor malfunctions to be detected.
Hint:
Change to sensor check mode by connecting terminals tc and cg of the dlc3,
and turning the ignitio ...
Rear occupant classification sensor lh collision detection
Description
Dtc b1787 is output when the occupant classification ecu receives a collision
detection signal sent by
the rear occupant classification sensor lh when an accident occurs.
Dtc b1787 is also output when the front seat assembly rh is subjected to a
strong impact, even if an
actua ...
Tires
Replace or rotate tires in accordance with maintenance schedules
and treadwear.
Checking tires
New tread
Treadwear indicator
Worn tread
The location of treadwear indicators
is shown by the ¢Â§twi¢¸ or ¢Â§ƒ´¢¸
marks, etc., Molded on the si ...