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Home >> Hyundai >> 2017 >> Azera Base >> Repair and Diagnosis (Single Page) >> Body & Frame >> Seats >> Integrated Memory System (IMS) >> Description And Operation >> Operation >> Memory Reproduction
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Memory Reproduction

  1. Reproducing Memory

    When "1" is received by DATA PL_1 or PL_2 of CAN 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.

    1. "P" Position switch is ON
    2. Vehicle speed input received from IPM is high (less than 3 Km/h)
    3. MANUAL switch of SEAT is not operated.
    4. 1 and 2 switch of IMS switch is ON in case that driver door is open or within 30 seconds from driver door close.
    5. 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 IPM is high (less than 3 Km/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 100 ms each, and the priority is as follows. SLIDE > RECLINE > Front height > rear height
    2. Driving motor is executed in the following order, in case of reproduction process, and DELAY TIME among each motor is as follows.
      Fig 1: Motor Driving Control Timing Pattern
      G12091855Courtesy of HYUNDAI MOTOR AMERICA

      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 100 ms.

    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 height, rear HEIGHT: 12EDGE (6PULSE)
    5. Operation is stopped in reaching target position of motor, when operating easy access function or reproduction process.

Easy access function

(user option - default: Operating easy access function)

  1. If Signal "IPM KEY IN" transmitted from IPM and signal "LOCAL KEY IN" in case that key is removed are changed from "LOW"(KEY IN) ->"HIGH" (KEY OFF), SEAT SLIDE is moved 50 mm backward from KEY OUT position.
  2. Signal "IPM KEY IN" transmitted from IPM or signal "LOCAL KEY IN" is changed from "HIGH" (KEY OFF) ->"LOW" (KEY IN) by inserting KEY, it is moved to KEY OUT position.
  3. 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 IPM is LOW (More than 3 km/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
  4. 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.
  5. MANUAL switch Input is operated during or after moving backward, it will move to KEY OUT position on easy access operated by KEY IN.
  6. 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
    Fig 2: IMS Switch Timing Pattern
    G12091856Courtesy of HYUNDAI MOTOR AMERICA

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
      Fig 3: Detecting Seat Error Operation Chart
      G12091857Courtesy of HYUNDAI MOTOR AMERICA

      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 40 ms 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.

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