An optimal seat position set by a driver can be memorized in
Power seat unit by IMS SW, which enables restoration of seat position
set by the driver despite
Playing of this function during drive is banned for safety
reasons, and it has emergency stop function of restoration and gearing
operation as well
Input Specification
1.
IGN2
IGN switch input is determined by Local switch “IGN2”.
2.
SEAT MANUAL switch : SEAT Input
(1)
SLIDE Front rear / rear right manual switch
Operating SLIDE motor of Seat either backward or forward
(2)
Recline Front rear / rear right switch
Operating recline motor of seat either backward or forward
(3)
Front rear height UP / DOWN manual switch
Operating Front rear height motor of SEAT either upward or downward
(4)
Rear right height UP / DOWN manual switch
Operating rear right height motor of SEAT either upward or downward
3.
SEAT position Sensor (pulse Signal)
Sensing movement amount of Slide, Recline, Front rear height, and Rear right height motor
4.
“P” Position switch
Sensing “P” position of SHIFT LEVER, not allowed for
memory saving and easy access function by getting on and off a vehicle
in the position other than “P.”
5.
Dr Door switch
Sensing that drive door opens
6.
BCM KEY IN
This signal is received for sensing state of KEY by BCM
7.
Local KEY IN switch
Sensing whether KEY is inserted or not.
8.
Speed
This signal is received for sensing vehicle speed by BCM
9.
IMS switch
(1)
SET switch
Allowing for saving the SEAT position set by driver
(2)
1, 2 switch
Saving and replaying the SEAT position set by driver
Transmitting communication signals between IMS switch and MEMORY P/SEAT (9600 bps)
CHATTERING Control in Input Signal
1.
Input switch - 40ms delay
SLIDE, RECLINE, Front rear height, rear right HEIGHT switch
“P” Position switch, SPEED, KEY IN, LOCAL KEY IN switch, DR DOOR switch, IGN2 switch
2.
IGN switch input is determined by Local switch “IGN2.
TIME Error
1.
±10%, for TIME without error indication
±50ms, for TIME not exceeding 500ms
2.
Indicated time in each function does not include Time of controlling CHATTERING started from changing point of rr input.
Operation
Control Specification
1.
MANUAL Operation
(1)
MANUAL Seat Operation SEAT is to be operated by MANUAL switch
Input of SEAT. SLIDE, RECLINE, Front rear height, and rear right height
is available to operate manually with IGN2 ON regardless of ECU B+ OFF.
2.
MEMORY Saving Operation
(1)
Allowing for Memory Storage
This process is allowed in case that IGN2 switch = ON,
“P” Position switch = ON and SPEED input is high ( less than 3km/h
).
1 BUZZER output is generated from IMS by receiving the DATA, “SET = 1.”
(2)
Memory Saving Operation
When MEM_1 or MEM_2 of transmitted LIN communication DATA
receives the DATA (“1”) by IMS switch generated from 1 or 2 switch
control in memory storage permission mode above, 2 BUZZER outputs are
generated and current seat position is stored. ( IMS switch transmits
storage command only if 1 or 2 switch input is generated within 5
seconds from SET switch OFF->ON, and the storage permission mode is
cancelled if more than 5 seconds are elapsed.)
(3)
Requirements for Memory Storage
MEMORY Storage is not allowed or cancelled in case that all of the following requirements are not met.
–
Ignition switch is ON
–
“P” Position switch is ON
–
Vehicle speed input received from BCM is high ( less than 3Km/h )
–
Less than 5 seconds elapsed from SET switch OFF->ON (determined by IMS switch )
(4)
Memory SET is to be available for memory storage
notwithstanding the number of SET times. (However, each MEMORY switch
operation delivers 1 memory storage action only.)
(5)
If MEMORY command is received during operating easy access
function or reproducing memory, activation is stopped, and current
position is stored.
If the command is received during operating MANUAL switch of SEAT, it will be stored where the memory command is received.
Memory Reproduction
1.
Reproducing Memory
When “1” is received by DATA PL_1 or PL_2 of LIN
communication transmitted by IMS switch generated from 1 or 2 switch
operation, 1 BUZZER output is generated and SEAT position is
automatically controlled, moving back to where it is stored to be
according to MEMORY.
2.
Anti-Reproduction
Reproducing memory is not allowed if the following condition is not met.
IMS will reproduce memory, only if all of , and are satisfied, and also either or is satisfied.
“P” Position switch is ON
Vehicle speed input received from BCM is high ( less than 3Km/h )
MANUAL switch of SEAT is not operated.
1 and 2 switch of IMS switch is ON in case that driver door is open or within 30 seconds from driver door close.
Ignition switch is ON
3.
Stopping Memory Reproduction
Reproducing memory is stopped unless all of the following conditions are met.
–
“P” Position switch of LOCAL switch is positioned at PARKING
–
Vehicle speed input received from BCM is high ( less than 3Km/h )
–
Target position of motor not reached
–
MANUAL switch of SEAT is not operated.
BUZZER output is operated for USER to understand reproduction by other UNIT, regardless that MANUAL switch of SEAT is ON.
–
SET switch is not operated
4.
Other
(1)
If memory is not stored, Reproduction will not be activated by 1 or 2 switch and BUZZER Output is generated.
(2)
The most recently received signal will be reproduced if other DATA (reproduction command) is received during reproducing memory.
(3)
If Input of SEAT MANUAL switch is operated during reproducing seat position, the activation should be completely stopped.
(4)
If ERROR occurs during operating SEAT, memory of related motor will clear.
5.
Motor Driving Control
(1)
To prevent inrush current from being duplicated during
driving motor, automated control of driving motor will defer driving
time for 100ms each, and the priority is as follows. SLIDE > RECLINE
> Front rear height > rear right height
(2)
Driving motor is executed in the following order, in case of
reproduction process, and DELAY TIME among each motor is as follows.
TIME value of each continuous driving motor (excluding operation by MANUAL switch)
SLIDE: 20 seconds, RECLINE: 35 seconds, Front rear height: 10 seconds, rear right height: 15 seconds
(3)
Motor Driving Control of Reverse Direction
If motor driving requires being in reverse direction during
operating easy access function or reproduction process, driving in
current direction is immediately stopped, and driving in the reverse
direction will be operated following 100ms.
(4)
If distance difference between stored position on
reproduction and current position is under the rated measurement, motor
is not operating regardless of receiving reproduction DATA. * SLIDE,
RECLINE, Front rear height, rear right HEIGHT: 12EDGE (6PULSE)
(5)
Operation is stopped in reaching target position of motor, when operating easy access function or reproduction process.
If “SET” switch is pressed over 6 seconds, Easy access
function can be set/cancelled by AUTO_SET. (2 Buzzer Outputs when
setting / 1 Buzzer Output when canceling)
2.
If Signal “BCM KEY IN” transmitted from BCM and signal
“LOCAL KEY IN” in case that key is removed are changed from
“LOW”(KEY IN) ->“HIGH” (KEY OFF), SEAT SLIDE is moved 50mm
backward from KEY OUT position.
3.
Signal “BCM KEY IN” transmitted from BCM or signal
“LOCAL KEY IN” is changed from “HIGH” ( KEY OFF) ->“LOW” (
KEY IN ) by inserting KEY, it is moved to KEY OUT position.
4.
Prohibiting and Stopping easy access operation.The following
requirements are determined and controlled by IMS. If one of the
following conditions is met during anti-operation or operation process,
it is stopped.
(1)
“P”Position switch is not ON
(If "P” Position switch is OFF during operating, the operation is completed.)
(2)
Vehicle data “SPEED” transmitted from BCM is LOW ( More than 3km/h )
(3)
MANUAL switch of SEAT is in operation
(4)
Reproduction command is received during easy access operation
(5)
“AUTO_SET” DATA transmitted from IMS switch has “ OFF” value.
(If “AUTO_SET” is changed during operating, the operation is completed.)
(6)
SET message transmitted from IMS switch is “1” during easy access operation
5.
If control is stopped during moving backward, the backward
action is paused without moving further. When returning, it moves just
as much the distance as it previously moved backwards.
6.
MANUAL switch Input is operated during or after moving
backward, it will move to KEY OUT position on easy access operated by
KEY IN.
7.
Condition to Restore Memory of riding position in a vehicle
(1)
MANUAL switch is operated in the level above Key IN
(2)
Reproducing memory is in operation
LIMIT Setting
1.
LIMIT position is randomly set as following since there is no
SLIDE, RECLINE, rear right height, and Front rear height LIMIT switch.
(1)
Control is immediately stopped, and the location in front of 6
pulse is set Driving LIMIT position, if more than 6PULSE is not
generated for 2 seconds during initial operation by MANUAL switch or by
easy access function after inserting battery.
(LIMIT position in reverse direction is the same as above.)
However, LIMIT position for Front rear height and rear right height is set if more than 6PULSE is not generated for a second.
(2)
If virtual LIMIT is set, MEMORY Reproduction is not operated
off the LIMIT boundary for preventing motor damage by mechanical LOCK
(3)
If PULSE is correctly input away from the LIMIT boundary by
MANUAL operation or by Easy access function with the previously set
LIMIT applied, LIMIT position is renewed
Detecting and Controlling ERROR
1.
Detecting seat ERROR
ERROR is controlled if the following situation occurs during
easy access operation, reproduction process and operating MANUAL switch
of each motor.
(1)
ERROR resulted from PULSE is not input
Related motor output is stopped if ERROR is detected during reproduction and easy access operation
Related motor output is stopped, if ERROR is found in MANUAL operation.
(2)
Sensor Vcc of Seat is detected as much as 40ms from less than 1V. => Return if Sensor Vcc of Seat is over 7V.
If SEAT Sensor Vcc ERROR is detected during reproduction and
easy access operation, all operating SEAT motor is stopped. (BUZZER
output is not operated.)
2.
ERROR Control
If ERROR is detected as shown above, it is considered to be
caused by broken HARNESS or Sensor malfunctioning, and is controlled as
following.
–
BUZZER output is operated during receiving storage and reproduction command regardless of ERROR occurrence
–
Paused easy access operation and memory reproduction is
available to be re-activated from operating MEMORY command after motor
malfunctioning is repaired, and it is as following.
(When SLIDE motor is repaired from Sensor ERROR, Easy access function is available)
SEAT: 6PULSE is correctly input from ERROR causing motor
position Sensor by operating MANUAL switch with in 2 seconds (SLIDE,
RECLINE)/ 1 second(Front rear height, Rear right height).
Determining Seat Position
Seat position is relatively determined rather than by absolute position.
Circuit Diagram Input/Output Specification Connector Pin Lay Out IMS input/output pin information NoSignal NameI/OContentsRemarkA1---A2FR height motor upOFR height motor up outputA3RR height motor upORR ...
Removal 1. Remove the negative (-) battery terminal. 2. Remove the driver seat in the car. (Refer to the BD group - "Front seat") 3. Remove the IMS module (A) after loosening 3 screws in the bottom of ...
Description The Side Airbags (SAB) are installed inside the front seat and protects the driver and passenger from danger when side crash occurs. The SRSCM determines deployment of side airbag by using Side Impact Sensor (SIS) signal. Never attempt to measure the circuit resistance of the ...
, 
and 
are satisfied, and also either 
or 
is satisfied.
Schematic Diagrams
IMS (Integrated Memory System) module Repair procedures