Nissan Murano. Manual - part 1196

HEATED SEAT

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< SYSTEM DESCRIPTION >

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HEATED SEAT

System Description

INFOID:0000000009718683

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.

Component Parts Location

INFOID:0000000009718684

Component Description

INFOID:0000000009718685

1.

Front heated seat switch (passenger 
side) M203

2.

Front heated seat switch (driver 
side) M202

3.

Rear heated seat switch 
• LH: D70
• RH: D72

4.

Seat back heater (front seat)
• Driver side B413
• Passenger side B433

5.

Seat cushion heater (front seat)
• Driver side B412
• Passenger side B432

6.

Seat back heater (rear seat)

7.

Seat cushion heater (rear seat)

8.

Heated seat relay (rear seat) M58

A.

View with glove box assembly removed

JMJIA1452ZZ

Item

Function

Heated seat switch

• Power is supplied to each heater
• Depending on LOW/HIGH position of switch, operating heater number is changeable

Seat cushion heater

Built-in seat cushion, the heater operates with the power supplied from heater seat switch

Seat back heater

Built-in seatback, the heater operates with the power supplied from heater seat switch

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< SYSTEM DESCRIPTION >

LUMBAR SUPPORT

LUMBAR SUPPORT

System Description

INFOID:0000000009718686

• Lumbar support can operate regardless of the ignition switch position because battery power is supplied to it

at all times.

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

ward operation of seatback support.

Component Parts Location

INFOID:0000000009718687

Component Description

INFOID:0000000009718688

1.

Lumbar support switch 
B457 (With automatic drive position-
er)
B407(Without automatic drive posi-
tioner)

2.

Lumbar support motor 
B458 (With automatic drive position-
er)
B408(Without automatic drive posi-
tioner)

A.

View with seat back pad is removed

JMJIA1458ZZ

Item

Function

Lumbar support switch

Controls the power supplied to lumbar support motor

Lumbar support motor

With the power supplied from lumbar support switch, operates the forward and backward 
movement of seatback support device

REAR SEATBACK POWER RETURN SYSTEM

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< SYSTEM DESCRIPTION >

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REAR SEATBACK POWER RETURN SYSTEM

System Diagram

INFOID:0000000009718689

System Description

INFOID:0000000009718690

DESCRIPTION

• The rear seat back power return system is the system that enables the return operation of the left and right

rear seatbacks independently by pressing and holding the power return switch on the instrument panel or in
the luggage room.

• As for the safety mechanism, the reverse operation is performed if the power return switch is released during

the return operation. The anti-pitch function is installed so that the automatic reverse operation is performed
if the pinching of foreign materials between the left and right rear seatbacks is detected.

OPERATION DESCRIPTION

The rear seatback power return system consists of the sector gear that transmits the movement information of
rear seatback power return control unit, power return switch, power return motor, motor sensor, primary posi-
tion limit switch, return complete limit switch and power return motor. 

Return Operation Starting Condition

The rear seat back return operation starts when all of the following conditions are satisfied.
• Vehicle speed 2 km/h (1 MPH) or less
• Return complete limit switch: ON
• The battery voltage is normal

• In the condition that the rear seatback is raised (return completion position), the sector gear is in the initial

position and the primary position limit switch and return complete limit switch are OFF. 

• When manually operating the rear seatback to the fold-down position, the return complete limit switch turns

ON, and the rear seatback power return control unit judges that the rear seatback is tilted (return non-com-
pletion position). 

JMJIA1393GB

Operation 
sequence

Rear seatback condition

Sector gear condition

Primary position limit 

switch

Return complete limit 

switch

1

Return completion position

Initial position

OFF

OFF

2

Fold-down position

Initial position

OFF

ON

3

Active

Return non-completion po-

sition

OFF 

→

 ON

ON

4

Return completion position

Return completion position

ON

OFF

5

Initial position

OFF

OFF

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< SYSTEM DESCRIPTION >

REAR SEATBACK POWER RETURN SYSTEM

• When pressing the power return switch on the instrument panel or in the luggage room, the rear seatback

power return control unit detects the power return ON signal and supplies the power to the power return
motor. Then, the rear seatback power return control unit sounds the operation start buzzer.

• With the power supplied from the rear seat back power control unit, the power return motor rotates in the

return direction. The rear seatback starts the return operation via the sector gear.

• When the sector gear starts rotating in the return direction, the primary position limit switch turns ON. The

rear seatback power return control unit judges that the sector gear is in any position other than the initial
position. 

• When the rear seatback moves to the return position, the return complete limit switch turns OFF. The rear

seatback power return control unit activates the return completion buzzer and stops the power return motor.
Then, the rear seatback power return control unit reverses the power return motor after 0.2 seconds so that
the sector gear returns to the initial position.

• When the sector gear returns to the initial position by reverse rotation of the power return motor, the primary

position limit switch turns OFF. The rear seatback power return control unit stops the reverse operation of
the power return motor. The return operation is completed. 

• When releasing the power return switch during the return operation (both the primary position limit switch

and return complete limit switch are ON), the rear seatback power return control unit detects the power
switch OFF signal and returns the rear seatback to the fold-down position by the reverse rotation of the
power return motor. When pushing the switch again during the reverse operation, the return operation
restarts.

NOTE:
Disconnect the battery with the sector gear in any position other than the initial position (primary position limit
switch: ON). The sector gear is returned to the initial position when the battery is connected again. 

ANTI-PINCH OPERATION

When the pinch between RH/LH rear seatbacks is detected during the return operation, the malfunction
detecting buzzer sounds and the rear seatback returns to the fold-down position. 
• If there is a pinching of foreign materials between the left and right rear seatbacks during the return opera-

tion (both the primary position limit switch and return complete switch are ON), the voltage pulse of motor
sensor changes.

• When inputting the pinching signal from the motor sensor, the rear seatback power return control unit

sounds the malfunction detecting buzzer and stops the power return motor. Then, the rear seatback power
return control unit reverses the power return motor after 0.2 second so that the rear seatback returns to the
fold-down position.

SECTOR GEAR REVERSE STARTING CONDITION

If any of the following conditions are satisfied, the sector gear may be reversed. 

• Rear seatback return is completed (return complete limit switch: OFF)
• Release the power return switch before completing the return
• Pinch detection
• Lock detection of power return motor

(Lock at normal rotation)

• The rear seatback return is not completed within 60 seconds
• Detect the battery voltage malfunction during the return operation
• Return to the normal condition after detecting the battery voltage malfunction during the return operation
• The primary position limit switch does not turn OFF 

→

 ON within the specified motor pulse number from

starting the return operation. 

SECTOR GEAR REVERSE STOP CONDITION

If any of the following conditions are satisfied, the reverse operation stops.

• Sector gear initial position (primary position limit switch: OFF)
• Lock detection of power return motor (Lock during reverse operation)
• The sector gear initial position is not completed within 60 seconds
NOTE:
The battery voltage indicates the voltage between battery voltage (system) terminal 17 and GND (system) ter-
minal 32 of rear seatback power return control unit. It is normal when the voltage is 7.5 

±

 10% or more. If it is

less than the specified value, there is a malfunction. 

POWER CONSUMPTION CONTROL SYSTEM

Rear seatback power return control unit incorporates a power consumption control function that reduces the
power consumption according to the vehicle status.