Infiniti QX56 (Z62). Manual - part 1119

SE-14

< SYSTEM DESCRIPTION >

COMPONENT PARTS

CLIMATE CONTROLLED SEAT SYSTEM : Component Parts Location

INFOID:0000000006217368

CLIMATE CONTROLLED SEAT SYSTEM : Component Description

INFOID:0000000006217369

1.

Climate controlled seat switch 

2.

Climate controlled seat relay

3.

Seat cushion thermal electric unit

4.

Climate controlled seat cushion 
brower motor

5.

Climate controlled seat control unit

6.

Climate controlled seatback brower 
motor

7.

Seatback thermal electric unit

A.

Engine room fuse, fusible link and re-
lay box

B.

Back side of seat cushion.

C.

View with seatback board removed.

JMJIA3816ZZ

Item

Function

Climate controlled seat relay

Supplies power to the climate controlled seat control unit in accordance with the key switch 
position that is ON or START

Climate controlled seat control unit

Installed in the seat cushion backside and controls the seat cushion blower motor, seatback 
blower motor, seatback thermal electric unit, and seat cushion thermal electric unit in accor-
dance with the input signal.

Climate controlled seat switch

Installed in the center console and transmits signals to climate controlled seat control unit in 
accordance with the HEAT (heated airflow) or COOL (cooled airflow) switch operation and the 
temperature switch operation

COMPONENT PARTS

SE-15

< SYSTEM DESCRIPTION >

C

D

E

F

G

H

I

K

L

M

A

B

SE

N

O

P

Seatback blower motor

Installed in the seatback and sends the airflow to the seatback thermal electric unit in accor-
dance with the control from the climate controlled seat control unit

Seat cushion blower motor

Installed in the seat cushion backside and sends the airflow to the seat cushion thermal elec-
tric unit in accordance with the control from the climate controlled seat control unit

Seatback thermal electric unit

Installed in the seatback backside and heats or cools the airflow from the climate controlled 
seat blower motor in accordance with the control from the climate controlled seat control unit

Seat cushion thermal electric unit

Installed in the seat cushion backside and heats or cools the airflow from the climate controlled 
seat blower motor in accordance with the control from the climate controlled seat control unit

Item

Function

SE-16

< SYSTEM DESCRIPTION >

SYSTEM

SYSTEM

POWER SEAT SYSTEM

POWER SEAT SYSTEM : System Description

INFOID:0000000006217370

Power seat switch can be operated regardless of the ignition switch position, because power supply is always
supplied to power seat switch.

SLIDING OPERATION

While operating the sliding switch located in power seat switch, sliding motor operates and makes possible the
seat front and back position adjustment.

RECLINING OPERATION

While operating the reclining switch located in power seat switch, reclining motor operates and makes possi-
ble the seat back forward and backward position adjustment.

LIFTING OPERATION

While operating the lifting switch located in power seat switch, lifting motor operates and makes possible the
seat cushion up and down position adjustment.

LUMBAR SUPPORT SYSTEM

LUMBAR SUPPORT SYSTEM : System Description

INFOID:0000000006217371

• Lumbar support switch can be operated regardless of the ignition switch position, because power supply is

always supplied to lumbar support switch.

• While operating the lumbar support switch, lumbar support motor operates which allows forward and back-

ward operation of seatback support.

SECOND SEAT POWER UNLOCK SYSTEM

SECOND SEAT POWER UNLOCK SYSTEM : System Description

INFOID:0000000006217372

• Second seat power unlock switch can be operated regardless of the ignition switch position, because power

supply is always supplied to second seat power unlock switch and power unlock relay.

• Power unlock motor pulls seatback control wire, seatback folds down, seat lock unlocks, and second seat

tilts up, when second seat power unlock switch is pressed.

THIRD SEAT SEATBACK POWER FOLDING SYSTEM

THIRD SEAT SEATBACK POWER FOLDING SYSTEM : System Description

INFOID:0000000006217373

• Third seat fold down switch and third seat reclining switch can be operated regardless of the ignition switch

position, because power supply is always supplied to third seat fold down switch, third seat reclining switch
and relays.

• Power folding motor operates and seatback reclining and third seat folding can be performed while third seat

fold down switch and third seat reclining switch are operated. 

FRONT HEATED SEAT SYSTEM

FRONT HEATED SEAT SYSTEM : System Description

INFOID:0000000006217374

Heated seat is a system that operates when ignition switch is in ON position.

HEATER OPERATION

• While operating the heated seat switch, seat cushion heater and seat back heater operate.
• Temperature of seat can be adjusted by operating on heated seat switch.

SECOND HEATED SEAT SYSTEM

SECOND HEATED SEAT SYSTEM : System Description

INFOID:0000000006217375

Heated seat is a system that operates when ignition switch is in ON position.

HEATER OPERATION

• While operating the heated seat switch, seat cushion heater and seat back heater operate.

SYSTEM

SE-17

< SYSTEM DESCRIPTION >

C

D

E

F

G

H

I

K

L

M

A

B

SE

N

O

P

• Temperature of seat can be adjusted by operating on heated seat switch.

CLIMATE CONTROLLED SEAT SYSTEM

CLIMATE CONTROLLED SEAT SYSTEM : System Diagram

INFOID:0000000006217376

CLIMATE CONTROLLED SEAT SYSTEM : System Description

INFOID:0000000006217377

• The climate controlled seat system is controlled by the climate controlled seat control unit.
• Operation of the climate controlled switch sends heated or cooled airflow and adjusts the seat temperature.

SEAT CUSHION AND SEATBACK TEMPERATURE ADJUSTMENT FUNCTION

• One thermal electric unit (TEU) unit is installed in each seat cushion and seatback. The unit heats or cools,

sends airflow to the seat surface, and adjusts the seat temperature.

• The thermal electric unit (TEU) is a heat exchanger that has a function to heat or cool the airflow from the

seat cushion blower motor and seatback blower motor. (By changing the direction of the current from the
power supply, the unit takes or gives heat, and adjusts exchange process depending on voltage. 

CAUTION:

• The thermal electric unit (TEU) has a dual-climate function that allows one side to operate at a high

temperature and the other to operate at a low temperature simultaneously.

• Before starting always turn OFF the switch and check that the electric unit is cold.

CLIMATE CONTROLLED SEAT SYSTEM : Fail-safe

INFOID:0000000006217378

• Climate controlled seat control unit equips fail-safe function.
• When a malfunction occurs in the systems shown below, climate controlled seat control unit stops output.

JMJIA3938GB