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Seat System - Front: Other Ford Kuga II

Seats ~1416 words

Driver Power Seat - Without Memory

The seat control switch contains normally closed contacts which are grounded. An individual circuit is switched to voltage when a specific adjustment position is selected. The seat control switch is hard-wired directly to the applicable seat motors. The motor direction is determined by the polarity of voltage supplied from the seat control switch.

The driver power seat is equipped with the following motors

  1. Front height motor (serviced with seat track assembly)
  2. Rear height motor (serviced with seat track assembly)
  3. Horizontal motor (the only seat track motor which can be serviced separately from the seat track assembly)
  4. Recliner motor (serviced with seat backrest assembly)
  5. Lumbar motor

Driver Power Seat - With Memory

When the vehicle is equipped with the programmable/recall memory option, the power driver seat is controlled by the DSM . The DSM is located on the driver seat track. This system allows automatic positioning of the driver seat to 1 of 3 programmable positions. For information on programming memory positions or recalling a stored memory position, refer to the Owner's Literature.

The driver power seat is equipped with the following motors

  1. Front height motor (serviced with seat track assembly)
  2. Rear height motor (serviced with seat track assembly)
  3. Horizontal motor (the only seat track motor which can be serviced separately from the seat track assembly)
  4. Recliner motor (serviced with seat backrest assembly)
  5. Lumbar motor

Heated Seat

This system allows on demand independent electrical heating of each front seat.

The heated seat system consists of the following components

  1. seat heater mats (located on the seat cushion and backrest)
  2. heated seat modules (located under each seat cushion)
  3. heated seat control switches (located on the center console)

DSM Network Input Messages

Broadcast MessageOriginating ModuleMessage Purpose
Power modeBCMProvides the ignition status.

Heated Seats

The heated seat control switch adjusts the driver or passenger seat to the desired heat setting: 0 through 5 (setting 0 is off, 1 is the lowest and 5 is the highest). Each heated seat control switch position sends a unique voltage signal to the associated driver or passenger heated seat module. The heated seat module supplies heater current to the seat cushion and backrest heater mats while monitoring input from a temperature sensor (part of the seat cushion heater mat) to maintain the desired seat temperature (setpoint) selected by the heated seat control switch. The heated seat remains on until the heated seat control switch is turned off or the ignition is set to OFF.

Seat Control Switch - Without Memory

The seat control switch contains normally closed contacts (which are grounded). When a specific adjustment position is selected, an individual circuit is switched to voltage.

Seat Control Switch - With Memory

The seat control switch is hard-wired to the DSM , which controls seat operation. When a specific seat adjustment position is selected, an individual circuit is switched to ground.

DSM

The driver seat control switch and power memory seat motors are hard-wired to the DSM . The DSM controls the operation of the power memory seat. The DSM communicates on the MS-CAN .

Memory Set Switch

The memory set switch (part of the driver door lock switch assembly) contains 3 momentary contact switches. It is hardwired to the DDM and is used to recall 1 of 3 memory positions stored in the DSM .

Seat Track - Without Memory

There are 3 front seat track bi-directional motors present on power seat tracks. The horizontal (fore/aft) front seat track motor is the only seat track motor which can be serviced separately from the seat track assembly. All other seat track motors (front up/down, rear up/down) are serviced as part of the seat track assembly. The seat track motors move the power seat forward/backward and up/down depending on the polarity of voltage supplied from the seat control switch.

Seat Track - With Memory

There are 3 front seat track bi-directional motors present on power seat tracks. The horizontal (fore/aft) front seat track motor is the only seat track motor which can be serviced separately from the seat track assembly. All other seat track motors (front up/down, rear up/down) are serviced as part of the seat track assembly. Each seat track motor contains a Hall-effect sensor which provides seat track position information to the DSM for setting/obtaining desired preset seat memory positions. The seat track motors move the power seat forward/backward and up/down depending on the polarity of voltage supplied from the DSM .

Seat Backrest - Without Memory

The seat backrest contains a bi-directional motor which is integral to the seat backrest assembly. The seat backrest motor moves the seat backrest forward/backward depending on the polarity of voltage supplied from the seat control switch.

Seat Backrest - With Memory

The seat backrest contains a bi-directional motor which is integral to the seat backrest assembly. The seat backrest motor contains a Hall-effect sensor which provides seat backrest position information to the DSM for setting/obtaining desired preset seat memory positions. The seat backrest motor moves the seat backrest forward/backward depending on the polarity of voltage supplied from the DSM .

Heated Seat Control Switch

The heated seat control switch receives voltage from the ignition relay, and contains two 6-position rotary (potentiometer) switches (one for the driver side and the other for the passenger side). The heated seat control switch supplies a voltage signal to the corresponding driver or passenger heated seat module based upon the selected switch positions.

Heated Seat Module

The driver/passenger heated seat module receives voltage from the accessory relay. When commanded by the heated seat control switch, the heated seat module monitors the seat cushion temperature sensor and supplies heater current to the seat cushion and backrest heater mats until the desired setpoint temperature is reached. Once the setpoint temperature is reached, the heated seat module cycles the heater circuits on/off as required to maintain the setpoint temperature.

Backrest Heater Mat

The cushion and backrest heater mats are connected in series. New backrest foam must be installed when installing a new backrest heater mat. The backrest foam should not be reused.

Cushion Heater Mat

The seat cushion heater mat is equipped with a temperature sensor (thermistor) which provides feedback to the heated seat module. The cushion and backrest heater mats are connected in series. New cushion foam must be installed when installing a new cushion heater mat. The cushion foam should not be reused. If a new cushion heater mat is needed on a front passenger seat, install a new OCS service kit with a heater mat already adhered to the cushion foam pad.

The Power Seat is Inoperative or Does Not Operate Correctly - Without Memory

Refer to POWER SEATS for schematic and connector information.

Possible Causes

  1. Fuse
  2. Wiring, terminals or connectors
  3. Seat control switch
  4. Horizontal motor
  5. Seat track
  6. Seat backrest

The Power Lumbar is Inoperative - Without Memory

Refer to POWER SEATS for schematic and connector information.

  1. Wiring, terminals or connectors
  2. Seat control switch
  3. Power lumbar assembly

The Power Lumbar is Inoperative - With Memory

Refer to MEMORY SEATS for schematic and connector information.

  1. Wiring, terminals or connectors
  2. Seat control switch
  3. Power lumbar motor assembly
  4. DSM

The Memory Seat Does Not Operate Using the Seat Control Switch

Refer to MEMORY SEATS for schematic and connector information.

  1. Fuse
  2. Wiring, terminals or connectors
  3. Seat control switch
  4. Horizontal motor
  5. Seat track
  6. Seat backrest
  7. DSM

The Memory Seat Does Not Operate Using the Memory Set Switch

Refer to MEMORY SEATS for schematic and connector information.

  1. Wiring, terminals or connectors
  2. Missing status information MS-CAN : ignition status
  3. Memory SET switch
  4. DSM

The Heated Seats Are Inoperative - Driver And Passenger

Refer to CLIMATE CONTROLLED SEATS for schematic and connector information.

  1. Fuse
  2. Accessory relay
  3. Wiring, terminals or connectors
  4. BCM

The Heated Seat Is Inoperative/Does Not Operate Correctly - Driver

Refer to CLIMATE CONTROLLED SEATS for schematic and connector information.

  1. Fuse(s)
  2. Wiring, terminals or connectors
  3. Seat heater switch
  4. Heated seat module
  5. Heater mat

The Heated Seat Is Inoperative/Does Not Operate Correctly - Passenger

Refer to CLIMATE CONTROLLED SEATS for schematic and connector information.

  1. Fuse(s)
  2. Wiring, terminals or connectors
  3. Seat heater switch
  4. Heated seat module
  5. Heater mat
  1. Network communication concern
  2. BCM
  3. DSM
  1. Charging system concern
  2. High resistance
  3. DSM
  1. Charging system concern
  2. DSM
  1. DDM
  2. DSM
  1. Seat calibration routine did not complete successfully. This can be caused by: low vehicle battery voltage obstruction/debris preventing full travel of the seat
  1. DSM

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