Infiniti Q45. Manual — part 852
CLIMATE CONTROLLED SEAT
SE-163
C
D
E
F
G
H
J
K
L
M
A
B
SE
Terminal and Reference Value for Climate Controlled Seat Control Unit
NIS0014Z
Ter-
minal
Wire
Color
Item
Signal
input/output
Condition
Voltage (V)
(Approx)
JB
W/G
Ignition switch power supply
Input
Ignition switch ON or START
Battery voltage
JC
B
Ground
—
—
0
JD
W/R
Ignition switch power supply
Input
Ignition switch ON or START
Battery voltage
J1
Y/G
Seat cushion thermal electric
device power supply (HEAT)
Input
Ignition switch
ON or START
Climate controlled seat switch
select “HEAT”
0 – Battery
voltage
Climate controlled seat switch
select “OFF”
0
J2
W/L
Seat cushion thermal electric
device power supply (COOL)
Input
Ignition switch
ON or START
Climate controlled seat switch
select “COOL”
0 – Battery
voltage
Climate controlled seat switch
select “OFF”
0
J3
GY
Ground
—
—
0
J4
G
“HEAT” switch indicator signal
Output
Ignition switch
ON or START
Climate controlled seat switch
select “HEAT”
Battery voltage
Climate controlled seat switch
select “OFF”
0
J5
OR
“COOL” switch indicator signal
Output
Ignition switch
ON or START
Climate controlled seat switch
select “COOL”
Battery voltage
Climate controlled seat switch
select “OFF”
0
J6
PU
“HEAT” switch signal
Input
Ignition switch
ON or START
Climate controlled seat switch
select “HEAT”
0
Climate controlled seat switch
select “OFF”
Battery voltage
J7
L
Temperature dial power supply
Input
Ignition switch
ON or START
temperature dial 1 – 4
7.1 – 11.4
Ignition switch OFF
0
J10
PU
Blower motor power supply
Input
Ignition switch
ON or START
Climate controlled seat switch
select “HEAT” or “COOL”
temperature dial 1 – 4
5.5 – Battery
voltage
Climate controlled seat switch
select “OFF”
Battery voltage
Ignition switch OFF
0
J11
B/R
Seatback thermal electric
device power supply (HEAT)
Input
Ignition switch
ON or START
Climate controlled seat switch
select “HEAT”
0 – Battery
voltage
Climate controlled seat switch
select “OFF”
0
J12
PU/W
Seatback thermal electric
device power supply (COOL)
Input
Ignition switch
ON or START
Climate controlled seat switch
select “COOL”
0 – Battery
voltage
Climate controlled seat switch
select “OFF”
0
J13
R
Blower motor speed control
signal
Input
Ignition switch
ON or START
Climate controlled seat switch
select “HEAT” or “COOL”
temperature dial 1 – 4
4.5 – 9.5
Climate controlled seat switch
OFF
0
J14
W
Blower motor tachometer
signal
Output
Ignition switch
ON or START
Climate controlled seat switch
select “HEAT” or “COOL”
5 – 7
Climate controlled seat switch
select “OFF”
Battery voltage
SE-164
CLIMATE CONTROLLED SEAT
Work Flow
NIS00150
1.
Check the symptom and customer's requests.
2.
Understand the outline of system. Refer to
3.
Perform the preliminary check. Refer to
4.
According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to
"Trouble Diagnoses Symptom Chart"
.
5.
Does climate controlled seat operate normally? YES: GO TO 6, NO: GO TO 4.
6.
INSPECTION END.
Preliminary Check
NIS00151
1.
CHECK DUCT AND FILTER
Check the following.
●
Is that there no foreign body in the blower motor filter.
●
Is that there no foreign body in the duct.
OK or NG
OK
>> Preliminary check is OK.
NG
>> The foreign body is removed.
J15
Y
Temperature dial signal
Input
Ignition switch
ON or START
temperature dial 1 – 4
0 – 5
Ignition switch OFF
0
J16
R
“COOL” switch signal
Input
Ignition switch
ON or START
Climate controlled seat switch
select “COOL”
0
Climate controlled seat switch
select “OFF”
Battery voltage
J17
B/R
Seat cushion thermal electric
device sensor ground
—
Ignition switch ON
0
J18
G/R
Seat cushion thermal electric
device sensor signal
Input
Ignition switch ON or START
0.5 – 4
Ignition switch OFF
0
J19
L/OR
Seatback thermal electric
device sensor signal
Input
Ignition switch ON or START
0.5 – 4
Ignition switch OFF
0
J20
R/L
Seatback thermal electric
device sensor ground
Input
Ignition switch ON
0
Ter-
minal
Wire
Color
Item
Signal
input/output
Condition
Voltage (V)
(Approx)
CLIMATE CONTROLLED SEAT
SE-165
C
D
E
F
G
H
J
K
L
M
A
B
SE
Trouble Diagnoses Symptom Chart
NIS00152
NOTE:
Make sure other systems using the signal of the following systems operate normally.
NOTE:
●
The climate controlled seat blower keep low speed for approximately 60 seconds turning the switch or the
dial.
●
The climate controlled seat system is downed when the temperature sensor set as the seat cushion and
the seat back's thermal electric device machine detects 20
°
C (68
°
F) or more of mutual differences of tem-
perature.
Symptom
Diagnoses / service procedure
Refer to page
Climate controlled seat do not operate
(Neither the driver' s side nor passenger's side operate).
Check climate controlled seat relay power supply circuit
All the driver side climate controlled seat do not operate
(Passenger side operates).
1. Check driver side climate controlled seat control unit
power supply and ground circuit
2. Check climate controlled seat temperature dial circuit
3. Check climate controlled seat switch ground circuit
4. Check blower motor power supply circuit
5. Replace blower motor assembly
–
All the passenger side climate controlled seat do not
operate (Driver side operates)
1. Check passenger side climate controlled seat control
unit power supply and ground circuit
2. Check climate controlled seat temperature dial circuit
3. Check climate controlled seat switch ground circuit
4. Check blower motor power supply circuit
5. Replace blower motor assembly
–
Blower motor speed cannot adjust.
1. Check climate controlled temperature dial
2. Check climate controlled seat control unit
3. Replace blower motor assembly
—
The climate controlled seat dose not operates when the
switch is done in “HEAT”
(The wind rises when the switch is in “COOL” mode).
Check climate controlled seat “HEAT” switch circuit
The climate controlled seat dose not operates when the
switch is done in “COOL”
(The wind rises when the switch is in “HEAT” mode).
Check climate controlled seat “COOL” switch circuit
When the climate controlled seat switch is turned on,
operation stops at nose (When the climate controlled seat
switch is in “HEAT” or “COOL” mode after ignition switch is
turned ON again, the motor operates).
1. Check seat cushion thermal electric device sensor
circuit
2. Check seat cushion thermal electric device circuit
3. Check seatback thermal electric device sensor circuit
4. Check seatback thermal electric device circuit
5. Check blower motor speed control circuit
6. Check blower motor tachometer signal circuit
7. Replace Climate controlled seat control unit
–
SE-166
CLIMATE CONTROLLED SEAT
Check Climate Controlled Relay Power Supply Circuit
NIS00153
1.
CHECK FUSE
Check 10A fuse [No. 1, located in fuse block (J/B)]
NOTE:
Refer to
SE-153, "Component Parts and Harness Connector Location"
.
OK or NG
OK
>> GO TO 2.
NG
>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse, refer to
2.
CHECK SEAT RELAY POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat relay connector.
3.
Turn ignition switch ON.
4.
Check voltage between climate controlled seat relay harness
connector B324 terminal 2 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness between fuse block (J/B) and
climate controlled seat relay.
3.
CHECK CLIMATE CONTROLLED SEAT RELAY
1.
Turn ignition switch OFF.
2.
Remove climate controlled seat relay.
3.
Check continuity between terminals 3 and 5, 6 and 7.
OK or NG
OK
>> GO TO 4.
NG
>> Replace climate controlled seat relay.
Connector
Terminal
(Wire color)
Condition
Voltage (V)
(+)
(–)
B324
2 (W/G)
Ground
Turn ignition switch ON
Battery voltage
Turn ignition switch OFF
0
PIIB2122E
Terminal
Condition
Continuity
3
5
12V direct current supply
between terminals 1 and 2
Yes
No current supply
No
6
7
12V direct current supply
between terminals 1 and 2
Yes
No current supply
No
SEC202B
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