Nissan Pathfinder. Manual — part 1004
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< ECU DIAGNOSIS INFORMATION >
CLIMATE CONTROLLED SEAT CONTROL UNIT
Fail-safe
INFOID:0000000009176464
• Climate controlled seat control unit equips fail-safe function.
• When a malfunction occurs in the systems shown as per the following, climate controlled seat control unit
stops output.
25
G
Seatback thermal electric de-
vice power supply (COOL)
Output
Ignition switch
ON or START
Climate controlled
seat switch select
COOL Battery
voltage
HEAT
0V
OFF
0V
26
LG
Seat cushion thermal electric
device power supply (COOL)
Output
Ignition switch
ON or START
Climate controlled
seat switch select
COOL Battery
voltage
HEAT
0V
OFF
0V
27
L
Seat cushion thermal electric
device power supply (HEAT)
Output
Ignition switch
ON or START
Climate controlled
seat switch select
HEAT
Battery voltage
COOL
0V
OFF
0V
28
W
Seatback thermal electric de-
vice power supply (HEAT)
Output
Ignition switch
ON or START
Climate controlled
seat switch select
HEAT
Battery voltage
COOL
0V
OFF
0V
29
R
Battery power supply
Input
Ignition switch ON
Battery voltage
30
B
Ground
—
—
0V
Terminal
Wire
color
Item
Signal
Input/
Output
Condition
Voltage
(Approx.)
Malfunction
Malfunctioning condition
The temperature difference between the seatback ther-
mal electric device and seat cushion thermal electric de-
vice is 30
°C (86°F) or more
• When it detects for 4 seconds that the temperature difference between
the seatback thermal electric device and seat cushion thermal electric
device is 30
°C (86°F) or more, stops the output to the thermal electric de-
vice, activates the climate controlled seat blower motor in the maximum
position, and sends the external airflow for 30 seconds.
• If the temperature difference is still 30
°C (86°F) or more after 30 seconds
pass, it stops all output and enters the system OFF condition.
• When the temperature difference between seatback thermal electric de-
vice and seat cushion thermal electric device becomes 20
°C (68°F) or
less, the system recovers automatically.
• If it detects that the temperature difference is 30
°C (86°F) or more after
the automatic system recovery, it immediately stops all output and enters
the system OFF condition.
NOTE:
When the switch operation is performed before entering the system OFF
condition, the fail-safe mode is reset.
The temperature of thermal electric device is 110
°C
(230
°F) or more in the HEAT mode (any thermal electric
device in the seatback or seat cushion)
• When it detects for 4 seconds that the temperature of the thermal electric
device is 110
°C (230°F) or more, stops the output to the thermal electric
device, activates the climate controlled seat blower motor in the maxi-
mum position, and sends the external airflow for 30 seconds.
• If the temperature does not become 105
°C (221°F) or less after 30 sec-
onds pass, it stops all output and enters the system OFF condition.
• When the temperature of the thermal electric device becomes 105
°C
(221
°F) or less, the system recovers automatically.
• If it detects that the temperature of the thermal electric device is 110
°C
(230
°F) or more after the automatic system recovery, it immediately
stops all output and enters the system OFF condition.
CLIMATE CONTROLLED SEAT CONTROL UNIT
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< ECU DIAGNOSIS INFORMATION >
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*: System voltage is the voltage between climate controlled seat control unit power source and the ground.
NOTE:
When the system enters in the fail-safe mode again after performing resetting procedure, perform diagnosis.
The temperature of the thermal electric device is 45
°C
(113
°F) or more in the COOL mode (any thermal electric
device in the seatback or seat cushion)
• When it detects for 4 seconds that the temperature of the thermal electric
device is between 45
°C (113°F) and 70°C (158°F), it starts the tempera-
ture monitoring of the thermal electric device at 3 second intervals.
• While monitoring, if it detects that the temperature raises 2
°C (36°F) or
more 4 times continuously or reaches 70
°C (158°F) or more, it stops all
output and enters the system OFF condition.
• If it detects other results of monitoring, it continues activating in the
COOL mode.
Thermal electric device sensor system open circuit
• When it detects for 4 seconds that the thermal electric device sensor sys-
tem is an open circuit.
Climate controlled seat blower motor system open circuit
• When it detects for 2 seconds that climate controlled seat blower motor
system is an open circuit while the climate controlled seat is being acti-
vated, it stops output to the thermal electric device.
• When it detects for 10 seconds that the climate controlled seat blower
motor system is an open circuit while the climate controlled seat is being
activated, it stops all output and enters the system OFF condition.
NOTE:
After detecting the climate seat blower motor system open circuit for 2
seconds, the system recovers automatically if the activation of the cli-
mate controlled seat blower motor is detected for 1 second or more.
Switch input out of the specified range
• When it detects for 4 seconds that the rotary switch input is 30% or less
of the vehicle battery voltage, it stops all output and enters the system
OFF condition.
• When the switch input returns to a value within the specified range, the
system recovers automatically.
HEAT or COOL switch input out of the specified range
• When it detects for 4 seconds that rotary switch input is 6% or less of the
vehicle battery voltage, it stops all output and enters the system OFF
condition.
• When the switch input returns to a value within the specified range, the
system recovers automatically.
System voltage out of range
• System voltage* of the climate controlled seat control unit is out of the
operation range (8.5 V – 16.5 V).
Malfunction
Malfunctioning condition
SE-16
< WIRING DIAGRAM >
POWER SEAT FOR DRIVER SIDE WITHOUT AUTOMATIC DRIVE POSITIONER
WIRING DIAGRAM
POWER SEAT FOR DRIVER SIDE WITHOUT AUTOMATIC DRIVE POSI-
TIONER
Wiring Diagram
INFOID:0000000009176465
ABJWA0352GB
POWER SEAT FOR DRIVER SIDE WITHOUT AUTOMATIC DRIVE POSITIONER
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< WIRING DIAGRAM >
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ABJIA0830GB
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