Infiniti Q45. Manual — part 837
POWER SEAT
SE-103
C
D
E
F
G
H
J
K
L
M
A
B
SE
Terminals and Reference Values for Passenger Side Power Seat Switch
NIS0013K
Terminals and Reference Values for Rear Power Seat Control Unit
NIS0013L
Termi-
nal
Wire
Color
Item
Signal
input/output
Condition
Voltage (V)
(Approx.)
1
W
Sliding motor forward signal
Output
When sliding switch forward is operated
Battery voltage
Other than above
0
2
G
Reclining motor forward signal
Output
When reclining switch forward is operated
Battery voltage
Other than above
0
4
R
Rear lifting motor DOWN signal
Output
When rear lifting switch DOWN is operated
Battery voltage
Other than above
0
6
Y
Rear lifting motor UP signal
Output
When rear lifting switch UP is operated
Battery voltage
Other than above.
0
8
B/W
Sliding motor backward signal
Output
When sliding switch backward is operated
Battery voltage
Other than above
0
9
PU
Reclining motor backward signal
Output
When reclining switch backward is operated
Battery voltage
Other than above
0
10
OR
Front lifting motor DOWN signal
Output
When front lifting switch DOWN is operated
Battery voltage
Other than above
0
11
LG
Front lifting motor UP signal
Output
When front lifting switch UP is operated.
Battery voltage
Other than above
0
15A
B
Ground
—
—
0
16
P
BAT power supply
Input
—
Battery voltage
Ter-
minal
Wire
Color
Item
Signal
input/output
Condition
Voltage (V)
(Approx.)
2
G
BAT power supply
Input
—
Battery voltage
4
Y
Sliding motor forward signal
Output
When sliding switch forward is
operated
Battery voltage
Other than above
0
11
GY
Sliding motor backward signal
Output
When sliding switch backward is
operated
Battery voltage
Other than above
0
15
B
Ground
—
—
0
18
BR/W
Sliding switch backward signal
Input
When sliding switch backward is
operated
0
Other than above
Battery voltage
21
W/G
Sliding sensor signal
Input
Sliding device active
Sliding device inactive
0 or 5
24
L/G
Sliding switch forward signal
Input
When sliding switch forward is
operated
0
Other than above.
Battery voltage
28
G/B
Ground
—
—
0
SIIA0690J
SE-104
POWER SEAT
Work Flow
NIS0013M
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 power seat operate normally? YES: GO TO 5, NO: GO TO 4.
5.
INSPECTION END.
Trouble Diagnoses Symptom Chart
NIS0013N
●
Check that other systems using the signal of the following systems operate normally.
36
LG/R
Cancel switch signal
Input
Cancel switch ON with rear door
(LH) open
5
Cancel switch ON with rear door
(LH) close
0
Cancel switch CANCEL
0
43
GY/R
Rear door switch (LH) signal
Input
Rear door (LH) open (ON)
0
Rear door (LH) close (OFF)
Battery voltage
74
G/R
Ground (sensor system)
—
—
0
Ter-
minal
Wire
Color
Item
Signal
input/output
Condition
Voltage (V)
(Approx.)
Symptom
Diagnoses / service procedure
Refer to
page
Front power seat passenger side and rear power seat LH,
RH do not operate.
Check power seat power supply circuit
Front power seat passenger side does not operate, but rear
power seat is operated.
Check front power seat passenger side power supply circuit
Front power seat passenger side does not do the sliding.
Check front power seat passenger side sliding circuit
Front power seat passenger side does not do the reclining.
Check front power seat passenger side reclining circuit
Front power seat passenger side front does not do the
front lifting.
Check front power seat passenger side front lifting circuit
Front power seat passenger side rear does not do the
rear lifting.
Check front power seat passenger side rear lifting circuit
Rear power seat LH or RH sliding switch does not operate
moreover, turnout/return function does not operate if the
door is opened.
1.
Check rear power seat control unit power
supply and ground circuit
2.
Check rear power seat sliding motor circuit
3.
Replace rear power seat sliding motor
—
Rear power seat LH or RH does not operate but turnout/
return function operates when the door is opened.
Check rear power seat switch circuit
Rear power seat LH and RH turnout/return function do not
operate, but operate by sliding switch.
Check auto return cancel switch circuit 2
Rear power seat LH or RH turnout/return function does not
operated, but operates by a sliding switch.
1.
Check rear door switch circuit
2.
Check auto return cancel switch circuit 1
3.
Check rear power seat sliding sensor circuit
4.
Replace rear power seat control unit
—
POWER SEAT
SE-105
C
D
E
F
G
H
J
K
L
M
A
B
SE
Check Power Seat Power Supply Circuit
NIS0013O
1.
CHECK FUSIBLE LINK
Check 40A fusible link (letter H located in the fuse and fusible link box).
NOTE:
Refer to
SE-92, "Component Parts and Harness Connector Location"
OK or NG
OK
>> Check the condition of the harness.
NG
>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse, refer to
Check Front Power Seat Passenger Side Power Supply Circuit
NIS0013P
1.
CHECK FRONT POWER SEAT PASSENGER SIDE POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect front power seat passenger side switch connector.
3.
Check voltage between front power seat passenger side switch
connector B342 terminal 16 and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace harness between fuse and fusible link
box and front power seat passenger side switch.
2.
CHECK POWER SEAT SWITCH
Check continuity between front power seat passenger side switch
connector.
OK or NG
OK
>> GO TO 3.
NG
>> Replace front power seat passenger side switch.
3.
CHECK FRONT POWER SEAT PASSENGER SIDE GROUND CIRCUIT
Check continuity between front power seat passenger side switch
connector B342 terminal 15A and ground.
OK or NG
OK
>> Check connector.
NG
>> Repair or replace harness between front power seat
passenger side switch and ground.
16 (P)
−
Ground
: Battery voltage
PIIA3963E
Terminal
Condition
Continuity
16
15A
Sliding switch turn forward and backward
Yes
Reclining switch turn forward and backward
Yes
Lifting switch (front) fully up and fully down
Yes
Lifting switch (rear) fully up and fully down
Yes
Other than above
No
PIIB0384E
15A (B)
−
Ground
:Continuity should exist.
PIIA3965E
SE-106
POWER SEAT
Check Front Power Seat Passenger Side Sliding Circuit
NIS0013Q
1.
CHECK POWER SEAT SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect front power seat passenger side switch connector.
3.
Check continuity between front power seat passenger side
switch as follows.
OK or NG
OK
>> GO TO 2.
NG
>> Replace front power seat passenger side switch.
2.
CHECK SLIDING MOTOR HARNESS
1.
Disconnect sliding motor connector.
2.
Check continuity between front power seat passenger side
switch connector B342 terminals 1, 8 and sliding motor connec-
tor B343 terminals 1, 8.
3.
Check continuity between front power seat passenger side
switch connector B342 terminal 1, 8 and ground.
OK or NG
OK
>> Replace sliding motor.
NG
>> Repair or replace harness between front power seat passenger side switch and sliding motor.
Terminal
Condition
Continuity
1
15A
Sliding switch backward
Yes
16
Sliding switch forward
Yes
15A, 16
Other than above
No
8
15A
Sliding switch forward
Yes
16
Sliding switch backward
Yes
15A, 16
Other than above
No
PIIA3967E
1 (W)
−
1 (W)
:Continuity should exist.
8 (B/W)
−
8 (B/W)
:Continuity should exist.
1 (W)
−
Ground
:Continuity should not exist.
8 (B/W)
−
Ground
:Continuity should not exist.
PIIA3968E
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