On-Vehicle Inspection

SEAT: FRONT POWER SEAT CONTROL SYSTEM:

ON-VEHICLE INSPECTION

1. CHECK POWER SEAT FUNCTION
(a) Check the basic functions.





(1) Operate the power seat switches and check to make sure each seat function works:

- Sliding
- Front vertical
- Lifter
- Reclining
- Lumbar support

2. CHECK POWER SEAT MOTOR ASSEMBLY
(a) 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. After the resistance increases, current is shut off to prevent a short circuit.

NOTE: Perform procedure A to B for the full range of motion for each power seat function.

(1) Choose a power seat function. Operate the power seat switch and move the seat to the maximum in one direction. Keep the seat in that position for approximately 60 seconds (Procedure A).
(2) Operate the power seat switch again and continue to try to move the seat in the same direction as in "procedure A". Measure the amount of time elapsed before the electrical current is automatically cut. Check if electrical current has shut off by making sure the sound of the motor has stopped.
Standard:
4 to 90 seconds
(3) After the current has stopped, release the power seat switch and wait for approximately 60 seconds.
(4) Operate the same power seat switch and move the seat to the opposite extreme of direction in procedure A. Check that the motor operates (Procedure B).
3. CHECK LUMBAR SUPPORT ADJUSTER ASSEMBLY
(a) Check the PTC operation inside the power seat motor.

NOTE: The inspection should be performed with the seat installed in the vehicle.

(1) 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 (Procedure C).
(2) Operate the lumbar support switch again and continue to try to move the lumbar support in the same direction as in procedure C. Measure the amount of time elapsed before the electrical current is automatically cut. Check if electrical current has shut off by making sure the sound of the motor has stopped.
Standard:
4 to 90 seconds
(3) After the current has stopped, release the lumbar support switch and wait for approximately 60 seconds.
(4) Operate the lumbar support switch and move the seat to the opposite extreme of direction in procedure C. Check that the motor operates.