Infiniti FX35, FX50 (S51). Manual — part 1636
SE-64
< ECU DIAGNOSIS INFORMATION >
CLIMATE CONTROLLED SEAT CONTROL UNIT
*: System voltage is the voltage between ventilation seat control unit power source and the ground.
NOTE:
Malfunction
Malfunctioning condition
The temperature difference between the seatback ther-
mal electric device and seat cushion thermal electric de-
vice is 30
°
C 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 or more, stops the output to the thermal electric device,
activates the climate controlled seat blower motor in the maximum posi-
tion, and sends the external airflow for 30 seconds
• If the temperature difference is still 30
°
C 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 or less, the
system recovers automatically
• If it detects that the temperature difference is 30
°
C or more after the au-
tomatic 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 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 or more, stops the output to the thermal electric device,
activates climate the controlled seat blower motor in the maximum posi-
tion, and sends the external airflow for 30 seconds
• If the temperature does not become 105
°
C or less after 30 seconds pass,
it stops all output and enters the system OFF condition
• When the temperature of the thermal electric device becomes 105
°
C or
less, the system recovers automatically
• If it detects that the temperature of the thermal electric device is 110
°
C
or more after the automatic system recovery, it immediately stops all out-
put and enters the system OFF condition
The temperature of the thermal electric device is 45
°
C 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 and 70
°
C, it starts the temperature monitoring of
the thermal electric device at 3 second intervals
• While monitoring, if it detects that the temperature raises 2
°
C or more 4
times continuously or reaches 70
°
C or more, it stops all output and en-
ters 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)
CLIMATE CONTROLLED SEAT CONTROL UNIT
SE-65
< ECU DIAGNOSIS INFORMATION >
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When the system enters in the fail-safe mode again after performing resetting procedure, perform diagnosis.
SE-66
< SYMPTOM DIAGNOSIS >
CLIMATE CONTROLLED SEAT DOES NOT OPERATE.
SYMPTOM DIAGNOSIS
CLIMATE CONTROLLED SEAT DOES NOT OPERATE.
BOTH SIDES
BOTH SIDES : Diagnosis Procedure
INFOID:0000000005236640
1.
CHECK CLIMATE CONTROLLED CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT
Check climate controlled control unit power supply and ground circuit.
Refer to
SE-10, "CLIMATE CONTROLLED SEAT CONTROL UNIT : Diagnosis Procedure"
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace the malfunctioning parts.
2.
CONFIRM THE OPERATION
Confirm the operation again.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-36, "Intermittent Incident"
.
NO
>> GO TO 1.
DRIVER SIDE
DRIVER SIDE : Diagnosis Procedure
INFOID:0000000005236641
1.
CHECK CLOMATE CONTROLLED SEAT CONTROL UNIT POWER SUPPLY CIRCUIT
Check climate controlled seat control unit power supply circuit.
Refer to
SE-10, "CLIMATE CONTROLLED SEAT CONTROL UNIT : Diagnosis Procedure"
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace the malfunctioning parts.
2.
CHECK CLIMATE CONTROLLED SEAT SWITCH
Check climate controlled seat switch.
Refer to
SE-14, "Component Function Check"
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace the malfunctioning parts.
3.
CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR
Check climate controlled seat blower motor.
Refer to
SE-25, "Component Function Check"
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace the malfunctioning parts.
4.
CONFIRM THE OPERATION
Confirm the operation again.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-36, "Intermittent Incident"
NO
>> GO TO 1.
PASSENGER SIDE
PASSENGER SIDE : Diagnosis Procedure
INFOID:0000000005236642
1.
CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT
Check climate controlled seat control unit power supply circuit.
CLIMATE CONTROLLED SEAT DOES NOT OPERATE.
SE-67
< SYMPTOM DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
SE
N
O
P
SE-10, "CLIMATE CONTROLLED SEAT CONTROL UNIT : Diagnosis Procedure"
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace the malfunctioning parts.
2.
CHECK CLIMATE CONTROLLED SEAT SWITCH
Check climate controlled seat switch.
Refer to
SE-14, "Component Function Check"
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace the malfunctioning parts.
3.
CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR
Check climate controlled seat blower motor.
Refer to
SE-25, "Component Function Check"
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace the malfunctioning parts.
4.
CONFIRM THE OPERATION
Confirm the operation again.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-36, "Intermittent Incident"
.
NO
>> GO TO 1.
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