Kia Niro: Integrated Memory System (IMS) / Description and operation
The optimum seat position set by the driver is memorized in the power seat unit
by IMS switch control to be recalled by using the IMS switch even if the seat position
has been changed.
It is equipped with safety functions such as prohibition of recalling and emergency
stopping of linked motion while driving.
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)
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| 2. |
Memory function : Can memorize and recall data for up to two persons
with IMS switch.
| (1) |
Memorized operations of seat and outside rearview mirror positions
are operated by IMS switch via CAN (IMS > DDM) when the optimum
seat position is set by the driver.
|
| (2) |
Recall by the CAN data received from IMS switch control.
|
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| 3. |
Linked motion for getting on/off
| (1) |
Linked motion for getting on/off depending on the ON/OFF state
of the engine
|
| (2) |
Uses IMS CAN data communication
|
| (3) |
Operating condition for getting on : ACC ON
|
| (4) |
Operating condition for getting off : Engine OFF
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| 4. |
Memorization and recalling of mirror position using memory switch
| (1) |
System Description
| –
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IMS switch inputs are received at Power Seat Module (PSM).
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| –
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On receiving IMS switch input, the PSM will send the
information to DDM and ADM via CAN.
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| –
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On receiving the information from the PSM, the DDM and
the ADM will memorize and restore it.
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| (2) |
Memorization and recall are performed if the following conditions
are met:
| –
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The vehicle speed is 0 km/h according to the information
transmitted from the BCM via CAN.
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| (3) |
Mirror Position Memorization
| –
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Move the driver side and passenger side outside rearview
mirrors to desired positions.
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| –
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Press the SET switch from IMS switches.
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| –
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Press switch 1 or 2 for a set period of time.
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| –
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The mirror positions will be stored in the IMS switch
1 or 2 of the DDM and the ADM.
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Recall operation
| 1. |
The buzzer will operate once and automatically be adjusted to the memorized
position when the CAN data from IMS is received.
|
| 2. |
Unsaved recall signals will not be performed.
|
| 3. |
If another recall signal is received during recall operation, the last
received recall signal prevails.
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| 4. |
If recall signal is received by pressing switch 1 or 2 during recall
operation, the seat will stop recall operation.
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| 5. |
If memory signal is received by pressing SET button during recall operation,
the seat will stop the recall operation.
|
Press the SET button once more to store the position of stop.
|
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| 6. |
Automatically stop at the virtual limit position during recall operation.
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| 7. |
If the difference between memorized position and current position is
less than 4 pulses, motor will not be operated.
|
Conditions for prohibiting
recall operation
Recall operation is prohibited and recall operation is stopped if any of the
following conditions is met.
| 1. |
IGN2 OFF (except within 30 seconds of opening or closing door)
|
| 2. |
Over 3 km/h of vehicle speed
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| 3. |
In case of manual switch manipulation
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| 4. |
Operation time chart
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Decision on the operation
priority
| 1. |
The motor operation shall be delayed for 100±10 milliseconds to prevent
the overlapping of inrush circuit during motor start. In this case, the
priority is as follows.
Slide > Backrest adjustment >Front height adjustment >Rear height adjustment
Operation time chart
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Operation linked with
getting on/getting off
| 1. |
Return operations backwards when getting off and forward when getting
on (slide type only)
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| 2. |
Starting of operation when the engine is off.
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| 3. |
Move to the target potision of ACC ON.
|
| 4. |
Condition for prohibiting operation
| – |
Over 3 km/h of vehicle speed
|
| – |
In case of power seat manual control switch manipulation
|
| – |
On receiving recall command during operation for getting on
|
| – |
Driver Settings Manu (USM) is Off
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Virtual Limit
| 1. |
Virtual Limit Setting Conditions and Positions
Set an arbitrary virtual limit using any of the methods below since there
is no separate switch limiting the operations 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
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Virtual Limit Setting Conditions
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Virtual Limit Setting Positions
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Slide
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2 seconds, 6 pulses
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6 pulses from restricted position
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Backrest adjustment (recline)
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2 seconds, 155 pulses
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155 pulses from restricted position
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Front tilt
|
1 second, 6 pulses
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6 pulses from restricted position
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Rear height adjustment
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1.5 seconds, 6 pulses
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6 pulses from restricted position
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? Pulse : A waveform unit to measure revolution of a motor
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| (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.
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| 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.
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Components
Connector Pin Information
No.
Connecter A
Connecter B
Connecter C
1
-
Battery (+ ...
Schematic diagrams
Memory power seat unit Components and components location