Front Power Seat Control System (w/ Seat Position Memory System)
SEAT: FRONT POWER SEAT CONTROL SYSTEM (w/ Seat Position Memory System): ON-VEHICLE INSPECTION
1. CHECK POWER SEAT FUNCTION (DRIVER AND FRONT PASSENGER)
(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 (DRIVER AND FRONT PASSENGER) (SLIDING, FRONT VERTICAL, LIFTER AND RECLINING FUNCTIONS)
(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. 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.
(1) 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.
(2) 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
(3) After current has been cut, release the power seat switch and wait for approximately 60 seconds.
(4) Operate the same power seat switch and move the seat in the opposite direction. Check that the motor operates.
3. CHECK LUMBAR SUPPORT ADJUSTER ASSEMBLY
(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 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.
(2) 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
(3) After current has been cut, release the lumbar support switch and wait for approximately 60 seconds.
(4) Operate the lumbar support switch and move the seat in the opposite direction. Check that the motor operates.
4. CHECK MEMORY AND SEAT RESTORING OPERATION (DRIVER AND FRONT PASSENGER)
(a) Turn the engine switch on (IG).
(b) Move the seat to the maximum front and upper positions via the seat switch.
(c) Check that the buzzer sounds for 0.5 seconds and the seat position is memorized when the M1 switch is pressed within 3 seconds after the SET switch is being pressed.
HINT
* The seat position will be stored when the M1 switch is pressed while the SET switch is being pressed.
The seat position will not be stored when the SET switch and M1 switch are pressed simultaneously.
The seat position will not be stored if the SET switch and 2 or more of the memory switches (for example, M1 and M2) are pressed simultaneously.
(d) Move the seat out of the maximum front and upper positions via the seat switch.
(e) Check that the buzzer sounds for 0.5 seconds and the seat position is memorized when the M2 switch is pressed within 3 seconds after the SET switch is being pressed.
HINT
* The seat position will be stored when the M2 switch is pressed while the SET switch is being pressed.
The seat position will not be stored when the SET switch and M2 switch are pressed simultaneously.
The seat position will not be stored if the SET switch and 2 or more of the memory switches (for example, M1 and M2) are pressed simultaneously.
(f) Move the seat to the maximum rear and down positions via the seat switch.
(g) Check that the buzzer sounds for 0.5 seconds and the seat position is memorized when the M3 switch is pressed within 3 seconds after the SET switch is being pressed.
HINT
* The seat position will be stored when the M3 switch is pressed while the SET switch is being pressed.
The seat position will not be stored when the SET switch and M3 switch are pressed simultaneously.
The seat position will not be stored if the SET switch and 2 or more of the memory switches (for example, M1 and M2) are pressed simultaneously.
(h) Move the shift lever to P.
(i) Check that the buzzer sounds for 0.1 seconds and the seat automatically moves into the maximum front and upper positions (memorized positions) when the M1 switch of the memory switch is pressed.
(j) Check that the buzzer sounds for 0.1 seconds and the seat automatically moves out of the maximum front and upper positions (memorized positions) when the M2 switch of the memory switch is pressed.
(k) Check that the buzzer sounds for 0.1 seconds and the seat automatically moves into the maximum rear and down positions (memorized positions) when the M3 switch of the memory switch is pressed.
(l) After the engine switch is turned off and the driver side door is opened, check that the buzzer sounds for 0.1 seconds and the seat automatically moves into the memorized position when the M1, M2 or M3 switch is pressed within 180 seconds.
(m) Within 60 seconds after the engine switch is turned off and the driver side door is closed, check that the buzzer sounds for 0.1 seconds and the seat automatically moves into the memorized position when the M1, M2 or M3 switch is pressed.
(n) Operate the front vertical function of the power seat switch to tilt the seat down 3 times; Within 10 seconds after operating the front vertical function of the power seat switch. Operate the lifter function of the power seat switch to tilt up and the reclining function of the power seat switch to recline the seat simultaneously, and hold both switches for 10 seconds.
HINT
* The buzzer sounds for 0.5 seconds when the memory is cleared.
5. CHECK MEMORY CALL FUNCTION (DRIVER SIDE ONLY)
(a) Automatic memory call function check (when the doors are unlocked using the wireless door lock control system)
(1) With a transmitter key recognition code registered:
Perform a wireless door unlock operation and check that opening the driver side door causes the following: 1) the buzzer sounds for 0.1 seconds, and 2) the front seat and the steering wheel (tilt & telescopic) automatically move to a stored positions.
HINT
* The registered transmitter key recognition code is recalled automatically.
* If the front seats are not operated, the buzzer will not sound.
(b) Automatic memory call function check (when the doors are unlocked using the smart access system with push-button start)
(1) With a transmitter key recognition code registered:
Unlock the doors using the smart access system and make sure that the following functions operate after occupying the driver's seat while carrying the smart-key and pressing the brake pedal: 1)the buzzer sounds for 0.1 seconds, and 2) the front seat and the steering wheel (tilt & telescopic) automatically move to their stored positions.
HINT
* The registered transmitter key recognition code is recalled automatically.
* If the front seats are not operated, the buzzer will not sound.
(c) Memory registration (for expect card type key)
(1) With the engine switch off and the driver side door closed, press and hold the M1, M2, or M3 switch. The front power seat switch (position control ECU) will enter transmitter key recognition code registration mode to allow a key to be linked to seat memory position.
HINT
If the memory switch is released before entering registration mode, the memory switch will not enter registration mode.
(2) When the transmitter's LOCK or UNLOCK switch is pressed, check that the buzzer of the front power seat switch (position control ECU) sounds once (0.5 seconds).
(d) Memory registration (for card type key)
(1) With the engine switch off and the driver side door closed, press and hold the M1, M2 or M3 switch while carrying the card key. The front power seat switch (position control ECU) will enter transmitter key recognition code registration mode to allow a key to be linked to seat memory position.
HINT
If the memory switch is released before entering registration mode, the memory switch will not enter registration mode.
(2) When the manual door lock switch is pressed, check that the buzzer of the front power seat switch (position control ECU) sounds once (0.5 seconds).
(e) Memory deletion (for except card key type)
(1) With the engine switch off and the driver side door closed, press and hold the SET switch. The front power seat switch (position control ECU) will enter transmitter key recognition code deletion mode.
HINT
If the memory switch is released before entering deletion mode, the memory switch will not enter deletion mode.
(2) When the transmitter's LOCK or UNLOCK switch is pressed, check that the buzzer of the front power seat switch (position control ECU) sounds twice (0.1 seconds each time).
(f) Memory deletion (for card key type)
(1) With the engine switch off and the driver side door closed, press and hold the SET switch while carrying the card key. The front power seat switch (position control ECU) will enter transmitter key recognition code deletion mode.
HINT
If the memory switch is released before entering deletion mode, the memory switch will not enter deletion mode.
(2) When the manual door lock switch is pressed, check that the buzzer of the front power seat switch (position control ECU) sounds twice (0.1 seconds each time).
6. MEMORY CALL EMERGENCY STOP FUNCTION (DRIVER SIDE ONLY)
(a) While a memory call function is operating, check that performing one of the following will stop the memory call operation: 1) press the SET, M1, M2 or M3 switch, or 2) press the position control ECU & switch.