Initial Inspection and Diagnostic Overview

SEAT: FRONT POWER SEAT CONTROL SYSTEM: OPERATION CHECK

1. CHECK POWER SEAT FUNCTION

(a) Check the basic functions.





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(1) Operate the power seat switches and check that each seat function operates properly:

* Sliding function

* Reclining function

* Lifter function

* Front vertical function

* Lumbar support adjustment function

2. CHECK FRONT SEAT MOTOR (SLIDING, RECLINING, FRONT VERTICAL AND LIFTER FUNCTION)

(a) Check the PTC operation inside the power seat motor.

HINT
The PTC thermistor resistance increases when the front power seat switch is held down even after the power seat has been moved as much as possible 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 to check the full range of motion for each power seat function.

(1) Choose a power seat function. Operate the front power seat switch and move the seat as much as possible in one direction. Keep the seat in that position for approximately 60 seconds.

(2) Operate the front 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 that elapses before current is cut (the sound of the motor stops).

Standard:

4 to 90 seconds

(3) After current has been cut, release the front power seat switch and wait for approximately 60 seconds.

(4) Operate the same front power seat switch and move the seat in the opposite direction. Check that the motor operates.

3. CHECK LUMBAR SUPPORT ADJUSTMENT MOTOR

(a) Check the PTC operation inside the power seat motor.

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

(1) Operate the power seat switch assembly and move the lumbar support to either the foremost or rearmost position. Keep the seat in that position for approximately 60 seconds.

(2) Operate the power seat switch assembly again and continue to try to move the lumbar support in the same direction as in the previous step. Measure the time until the current is shut off (motor operation sound will stop).

Standard:

4 to 90 seconds

(3) After the current is shut off, release the power seat switch assembly and wait for approximately 60 seconds.

(4) Operate the power seat switch assembly and move the lumbar support in the opposite direction. Check that the motor operates.