Infiniti M35/M45 Y50. Manual — part 1088
![](/vehicles/zatt/cen/houeebante/ckekestepont.png)
HEATED SEAT
SE-149
C
D
E
F
G
H
J
K
L
M
A
B
SE
TIWT1400E
![](/vehicles/zatt/cen/houeebante/ngss.png)
SE-150
HEATED SEAT
TIWT1454E
![](/vehicles/zatt/cen/houeebante/psanghis.png)
HEATED SEAT
SE-151
C
D
E
F
G
H
J
K
L
M
A
B
SE
TIWT1402E
![](/vehicles/zatt/cen/houeebante/hamellahergh.png)
SE-152
HEATED SEAT
Terminals and Reference Values for Rear Seat Control Unit
NIS00284
Work Flow
NIS00285
1.
Check the symptom and customer's requests.
2.
Understand the outline of system. Refer to
3.
According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to
"Trouble Diagnoses Symptom Chart"
.
4.
Does heated seat operate normally? YES: GO TO 5, NO: GO TO 3.
5.
INSPECTION END.
Trouble Diagnoses Symptom Chart
NIS00286
●
Check that other systems using the signal of the following systems operate normally.
Terminal
Wire
color
Item
Signal
Input/Output
Condition
Voltage (V)
(Approx.)
1
R
Power source (BAT)
Input
—
Battery voltage
4
R/B
Power source (IGN)
Input
—
Battery voltage
5
R/Y
Seat heater HI signal
Input
Seat heater HI operation
Battery voltage
Other than above
0
6
R/L
Seat heater LO signal
Input
Seat heater LO operation
Battery voltage
Other than above
0
8
B/L
Ground (power)
—
—
0
9
W/B
Heated seat indicator HI signal
Output
Heater HI operation (lit)
0
Other than above
Battery voltage
13
B/Y
Ground (signal)
—
—
0
14
W/G
Heated seat indicator LO signal
Output
Heater LO operation (lit)
0
Other than above
Battery voltage
17
W/L
Heated seat switch HI signal
Input
Heated seat switch (HI) – ON (pressed)
0
Heated seat switch (HI) – OFF
Battery voltage
18
W
Heated seat switch LO signal
Input
Heated seat switch (LO) – ON (pressed)
0
Heated seat switch (LO) – OFF
Battery voltage
Symptom
Diagnoses / service procedure
Refer to page
Rear heated seat LH and RH does not operate.
Check rear heated seat power supply and ground
circuit
Rear heated seat LH or RH do not operate.
1. Check rear seat control unit power supply and
ground circuit
2. Check rear heated seat switch circuit
3. Check rear seatback heater circuit
4. Replace rear LH or RH seat control unit
Rear heated seat do not operate with LO or HI position.
1. Check rear heated seat switch circuit
2. Check rear heated seat circuit
Rear heated seat LH or RH indicator do not operate.
Check rear heated seat indicator power supply
circuit
Rear heated seat indicator do not operate with LO or HI position
Check rear heated seat indicator circuit
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