This function memorizes the optimized seat position set by
the driver into the power seat unit by operating the IMS switch so that
the personal setting position of the seat can be restored by IMS switch
even when the seat position is changed.
It prohibits restoring of seat position while driving. Also,
it has a function of emergency stopping of linked motion for safety.
The main functions are as follows.
1.
Manual operation: Motor control with the seat manual switch
(1)
The position of the seat is changed by operating the motor
when the signal is input with manual switch for the seat (Slide,
recline, front tilt, rear height adjusting)
2.
Memory function : Can memorize and reproduce up to two personalized seat positions by using IMS switch.
(1)
The memorized motion (seat and outside mirrors) for the
optimal seal position set by the driver based on the CAN data
(IMS→DDM) with IMS switch.
(2)
Reproduction by the CAN data received from IMS switch controlling.
3.
Linked Motion for Vehicle Entering/Exiting
(1)
Function of vehicle entering/exiting linked motion depending on the state of engine ON/OFF.
(2)
Use of IMS CAN data communcation
(3)
Condition for operating vehicle Entering : When the electric power is in ACC.
(4)
Condition for operating vehicle Exiting : When the engine is OFF.
4.
Memorization and Recall of Mirror Position Using Memory Switch
(1)
System Description
–
IMS switch inputs are received by Power Seat Module (PSM).
–
Receiving the IMS switch inputs, the PSM will send the information to DDM and ADM via CAN communication.
–
Receiving the information from the PSM, the DDM and the ADM will memorize and recall it.
(2)
Carry out the memorization and recall operation if the following conditions are met :
–
IGN ON
–
Gear selected in P (Park) position
–
The vehicle speed is "0 km/h" according to the information transmitted from the BCM via CAN communication.
(3)
Save Mirror Position
–
Move the mirrors on the sides of driver and passenger seats to desired positions.
–
Press the SET switch from IMS switches.
–
Press the switch 1 or 2 within the limited time period.
–
The mirror positions will be stored in the IMS switch 1 or 2 of the DDM and the ADM.
Operation
Reproducing motion
1.
The buzzer is operated once and adjusted automatically to the memorized position when the CAN data is received from IMS.
2.
Unmemorized CAN data to not perform reproduction.
3.
The finally received CAN data for reproduction shall be preferred when other CAN data is received during reproduction motion.
4.
The seat stops reproducing if the reproduction CAN data is received by pressing button 1 or 2 during reproduction.
5.
The seat stops reproducing if the memorized CAN data is received by pressing SET button during reproduction.
Press the SET button once more to store the position of stop.
6.
Automatic stop when seat is virtual limit position during reproduction.
7.
Do not operate the motor when the difference between the
memorized position for reproduction and current position is less than 4
pulses.
Conditions for prohibiting the reproduction
Prohibit the reproduction in case of falling on any of following conditions and stop controlling during reproduction action.
1.
IGN2 OFF (Excluding within 30 seconds after door opening or closing.)
2.
Higher than 3km/h of vehicle speed
3.
When the switch is controlled manually
4.
Operation time chart
Decision on the operation priority
1.
The motor operation shall be delayed for 100±10 ms to
prevent overlapping of inrush circuit during motor start. The priority
in this case shall be as follows:
Returning motion to backwards when entering vehicle and forward when exiting vehicle (corresponding to slide only).
2.
Starting of operation when the engine is off.
3.
Moving to the targeted position of ACC ON.
4.
Behavior prohibited conditions
–
Vehicle speed 3km/h
–
Power seats, if the operation of the manual control switch.
–
Driver Settings menu (USM) is Off,
–
Passenger action on receipt of the play command
Virtual Limit
1.
Virtual Limit Setting Conditions and Positions
Set an arbitrary virtual limit using any methods below since
there is no independent limit switch, restricting driving of slide,
backrest, and front / rear height adjusting motors :
(1)
Slide recall: When there is no slide motor pulse inputted
(mechanical end stop) through 6 or more pulses for 2 seconds during any
operation triggered by a manual switch and memory recall operation, stop
the motor immediately and set a position ahead of 6 pulses away from
the position as the limit position in the driving direction (same for
the opposite limit setting).
Set position
Virtual Limit Setting Conditions
Virtual Limit Setting Positions
Slide
1 second, 6 pulses
6 pulses from restricted position
Recline
1 second, Frt 130 pulses
Rear 30 pulses
Front tilt
1 second, 6 pulses
6 pulses from restricted position
Rear height
1 second
6 pulses from restricted position
※ Pulse : A waveform unit to measure revolution of a motor
(2)
Once a virtual limit has been set, do not perform any memory
recall operation to a position out of the limit range, in order to
prevent motor damage due to kinematic locking.
(3)
Renew the limit position if a pulse is normally inputted out
of that position by memory manipulation with the limit set.
2.
Virtual Limit Setting Procedure
(1)
Slide : To set a virtual limit, move a seat forwards to the
end stop, hold it for 2 seconds, move it rearwards to the end, and then
hold it for 2 seconds.
(2)
Backrest adjustment (recline) : To set a virtual limit, move a
backrest forwards to the end stop, hold it for 2 seconds, move it
rearwards to the end, and then hold it for 2 seconds.
(3)
Front tilt : To set a virtual limit, move a seat upwards to
the end stop, hold it for 1 second, move it downwards to the end, and
then hold it for 1 second.
(4)
Rear height adjustment : To set a virtual limit, move a seat
upwards to the end stop, hold it for 1.5 seconds, move it downwards to
the end, and then hold it for 1.5 seconds.
Components
Connector Pin Information
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Kia Sedona: Description and Operation
Schematic Diagrams
IMS (Integrated Memory System) module Components and Components Location