Infiniti QX4. Electrical System (2003 year). Manual — part 25
Symptom
Possible cause
Repair order
Retained power operation does not
operate properly.
1. RAP signal circuit
2. Driver or passenger side door
switch circuit
3. Smart entrance control unit
1. Check RAP signal.
a. (With CONSULT-II)
쐌
Check RAP signal with CONSULT-II.
Use “WORK SUPPORT” mode, “RETAINED PWR”
in “SMART ENTRANCE”. (Refer to EL-387.)
쐌
Check RAP signal with CONSULT-II.
Use “ACTIVE TEST” mode, “RETAINED PWR” in
“SMART ENTRANCE”.
(Refer to EL-386.)
If NG, go to the step b. below.
b. Verify 12 positive voltage from smart entrance con-
trol unit terminal 46 is present at terminal 2 of
power window relay:
쐌
Within 45 seconds after ignition switch turns off.*1
쐌
When front door LH and RH is closed.
2. Check the following.
a. Harness between smart entrance control unit and
driver or passenger side door switch for short cir-
cuit
b. Driver or passenger side door switch ground circuit
c. Driver or passenger side door switch
3. Check smart entrance control unit. (EL-492)
Passenger side power window can-
not be operated using power win-
dow main switch but can be oper-
ated by passenger side power win-
dow switch.
1. Power window main switch
2. Power window main switch cir-
cuit
1. Check power window main switch. (EL-395)
2. Check harness for open or short circuit between
power window main switch terminal 14 and front
power window switch RH terminal 16.
Rear LH power window cannot be
operated using power window main
switch but can be operated by rear
LH power window switch.
1. Power window main switch
1. Check power window main switch. (EL-395)
Rear RH power window cannot be
operated using power window main
switch but can be operated by rear
RH power window switch.
1. Power window main switch
1. Check power window main switch. (EL-395)
Power window open/close operation
with key cylinder does not operate
properly.
1. Front door key cylinder switch
LH
2. Front door key cylinder switch
LH circuit
3. Power window main switch
1. Check front door key cylinder switch LH.
2. Check harness for open or short circuit between
front door key cylinder switch LH and power win-
dow main switch.
3. Check power window main switch.
*1: RAP signal’s period can be changed by CONSULT-II. (EL-387)
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER WINDOW
Trouble Diagnoses (Cont’d)
EL-389
ENCODER AND LIMIT SWITCH CHECK
=NBEL0490S01
1
CHECK DOOR WINDOW SLIDE MECHANISM
Check the following.
쐌
Obstacles in window, glass molding, etc.
쐌
Worn or deformed glass molding
쐌
Door sash tilted too far inward or outward
쐌
Door window regulator
OK or NG
OK
䊳
GO TO 2.
NG
䊳
Remove obstacles or repair door window slide mechanism.
2
CHECK LIMIT SWITCH POWER SUPPLY INPUT SIGNAL
1. Disconnect front power window regulator LH or RH connector.
2. Turn ignition switch to ON position.
3. Check voltage between front power window regulator LH harness connector D5 terminal 2 (G/W) or front power window
regulator RH harness connector D35 terminal 2 (G/W) and ground.
SEL835Y
OK or NG
OK
䊳
GO TO 4.
NG
䊳
GO TO 3.
3
CHECK LIMIT SWITCH POWER SUPPLY OUTPUT SIGNAL
Check voltage between power window main switch harness connector D6 terminal 9 (G/W) or front power window switch
RH harness connector D44 terminal 15 (G/W) and ground.
SEL836Y
OK or NG
OK
䊳
Repair harness or connectors between power window switch and front power window
regulator.
NG
䊳
Replace power window main switch or front power window switch RH.
POWER WINDOW
Trouble Diagnoses (Cont’d)
EL-390
4
CHECK LIMIT SWITCH OPERATION
1. Connect front power window regulator LH or RH connector.
2. Check voltage between power window main switch harness connector D6 terminal 9 (G/W) or front power window
switch RH harness connector D44 terminal 15 (G/W) and ground during power window closing operation.
SEL687Y
OK or NG
OK
䊳
GO TO 7.
NG
䊳
GO TO 5.
5
RESET LIMIT SWITCH
Reset limit switch. Refer to BT-47, “Front Door Glass Limit Switch Reset”. Then check voltage between power window
main switch harness connector D6 terminal 9 (G/W) or front power window switch RH harness connector D44 terminal 15
(G/W) and ground during power window closing operation at least ten times.
SEL687Y
OK or NG
OK
䊳
INSPECTION END
NG
䊳
GO TO 6.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER WINDOW
Trouble Diagnoses (Cont’d)
EL-391
6
CHECK GROUND CIRCUIT
1. Turn ignition switch to OFF position.
2. Disconnect power window main switch connector or front power window switch RH connector and front power window
regulator LH or RH connector.
3. Check the following.
쐌
Continuity between power window main switch harness connector D6 terminal 2 (W/B) and front power window regula-
tor LH harness connector D5 terminal 6 (W/B)
쐌
Continuity between front power window switch RH harness connector D44 terminal 3 (W/B) and front power window
regulator RH harness connector D35 terminal 6 (W/B)
SEL840Y
OK or NG
OK
䊳
Replace front power window regulator LH or RH.
NG
䊳
Repair harness or connectors between power window switch and front power window
regulator.
7
CHECK ENCODER INPUT SIGNAL
Check voltage signal between power window main switch harness connector D6 terminal 13 (G/Y) or front power window
switch RH harness connector D44 terminal 12 (G/Y) and ground with oscilloscope when power window is in automatic
closing operation.
SEL688Y
OK or NG
OK
䊳
Replace power window main switch or front power window switch RH.
NG
䊳
GO TO 8.
POWER WINDOW
Trouble Diagnoses (Cont’d)
EL-392
8
CHECK ENCODER OUTPUT SIGNAL
Check voltage signal between front power window regulator LH harness connector D5 terminal 5 (G/Y) or front power win-
dow regulator RH harness connector D35 terminal 5 (G/Y) and ground.
SEL837Y
OK or NG
OK
䊳
Repair harness or connectors between power window switch and front power window
regulator.
NG
䊳
GO TO 9.
9
CHECK ENCODER POWER SUPPLY INPUT SIGNAL
1. Disconnect front power window regulator LH or RH connector.
2. Turn ignition switch to ON position.
3. Check voltage between front power window regulator LH harness connector D5 terminal 4 (G/R) or front power window
regulator RH harness connector D35 terminal 4 (G/R) and ground.
SEL838Y
OK or NG
OK
䊳
Replace front power window regulator LH or RH.
NG
䊳
GO TO 10.
GI
MA
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LC
EC
FE
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TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER WINDOW
Trouble Diagnoses (Cont’d)
EL-393
10
CHECK ENCODER POWER SUPPLY OUTPUT SIGNAL
Check voltage between power window main switch harness connector D6 terminal 15 (G/R) or front power window switch
RH harness connector D44 terminal 4 (G/R) and ground.
SEL839Y
OK or NG
OK
䊳
Repair harness or connectors between power window switch and front power window
regulator.
NG
䊳
Replace power window main switch or front power window switch RH.
POWER WINDOW
Trouble Diagnoses (Cont’d)
EL-394
MAIN SWITCH OPERATION CHECK
=NBEL0490S02
Passenger Side Operation
NBEL0490S0201
1
CHECK POWER WINDOW MAIN SWITCH OUTPUT SIGNAL
With CONSULT-II
1. Turn ignition switch to ON position.
2. Turn power window main switch to ON (UP or DOWN).
3. Check signal between power window main switch harness connector D6 terminal 14 (BR) and ground when power win-
dow is in open or close operation. (Use “SIMPLE OSCILLOSCOPE” in “SUB MODE” with CONSULT-II.)
SEL689Y
Without CONSULT-II
1. Turn ignition switch to ON position.
2. Turn power window main switch to ON (UP or DOWN).
3. Check voltage between power window main switch harness connector D6 terminal 14 (BR) and ground when power
window is in open or close operation.
SEL690Y
OK or NG
OK
䊳
GO TO 2.
NG
䊳
Replace power window main switch.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER WINDOW
Trouble Diagnoses (Cont’d)
EL-395
2
CHECK SIGNAL CIRCUIT
1. Turn ignition switch to OFF position.
2. Disconnect power window main switch connector and front power window switch RH connector.
3. Check continuity between power window switch harness connector D6 terminal 14 (BR) and front power window switch
RH harness connector D44 terminal 16 (BR).
SEL831Y
OK or NG
OK
䊳
INSPECTION END
NG
䊳
Repair harness or connectors.
POWER WINDOW
Trouble Diagnoses (Cont’d)
EL-396
Rear LH Side Window Operation
=NBEL0490S0202
1
CHECK POWER WINDOW MAIN SWITCH OUTPUT SIGNAL
1. Turn ignition switch to ON position.
2. Check voltage between power window main switch harness connector D6 terminal 1 (R/B) or 3 (G/W) and ground
when rear power window LH side is in open or close operation.
SEL692Y
OK or NG
OK
䊳
GO TO 2.
NG
䊳
Replace power window main switch.
2
CHECK SIGNAL CIRCUIT
1. Turn ignition switch to OFF position.
2. Disconnect power window main switch connector and rear power window switch LH connector.
3. Check continuity between power window main switch harness connector D6 terminal 3 (G/W) and rear power window
switch LH harness connector D52 terminal 3 (B/W).
4. Check continuity between power window main switch harness connector D6 terminal 1 (R/B) and rear power window
switch LH harness connector D52 terminal 2 (W/B).
SEL800Y
Yes or No
Yes
䊳
INSPECTION END
No
䊳
Repair harness or connectors.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER WINDOW
Trouble Diagnoses (Cont’d)
EL-397
Rear RH Side Window Operation
=NBEL0490S0203
1
CHECK POWER WINDOW MAIN SWITCH OUTPUT
1. Turn ignition switch to ON position.
2. Check voltage between power window main switch harness connector D6 terminal 5 (B/W) or 7 (W/B) and ground
when rear power window RH side is in open or close operation.
SEL694Y
OK or NG
OK
䊳
GO TO 2.
NG
䊳
Replace power window main switch.
2
CHECK SIGNAL CIRCUIT
1. Turn ignition switch to OFF position.
2. Disconnect power window main switch connector and rear power window switch RH connector.
3. Check continuity between power window main switch harness connector D6 terminal 7 (W/B) and rear power window
switch RH harness connector D72 terminal 2 (W/B).
4. Check continuity between power window main switch harness connector D6 terminal 5 (B/W) and rear power window
switch RH harness connector D72 terminal 3 (B/W).
SEL801Y
Yes or No
Yes
䊳
INSPECTION END
No
䊳
Repair harness or connectors.
POWER WINDOW
Trouble Diagnoses (Cont’d)
EL-398
Component Parts and Harness Connector
Location
NBEL0384
SEL675Y
System Description
NBEL0385
POWER DOOR LOCK OPERATION
NBEL0385S01
쐌
The lock/unlock switch (LH and RH) on door trim can lock and unlock all doors.
쐌
With the door key inserted in the key cylinder on front LH, turning it to “LOCK”, will lock all doors; turning
it to “UNLOCK” once unlocks the corresponding door; turning it to “UNLOCK” again within 5 seconds after
the first unlock operation unlocks all of the other doors. (Signals from door key cylinder switch)
Select unlock mode can be changed by CONSULT-II. (Refer to EL-409)
KEY REMINDER DOOR SYSTEM
NBEL0385S05
쐌
If the ignition key is in the ignition key cylinder and one or more of doors are open, setting the lock/unlock
switch to “LOCK” locks the doors once but then immediately unlock them. (Combination signals from key
GI
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LC
EC
FE
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TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER DOOR LOCK
Component Parts and Harness Connector Location
EL-399
switch and door switches)
Key reminder door system can be changed by CONSULT-II (Refer to EL-409).
POWER DOOR LOCK
System Description (Cont’d)
EL-400
Schematic
NBEL0386
MEL431P
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER DOOR LOCK
Schematic
EL-401
Wiring Diagram — D/LOCK —
NBEL0387
FIG. 1
NBEL0387S01
MEL403R
POWER DOOR LOCK
Wiring Diagram — D/LOCK —
EL-402
FIG. 2
NBEL0387S02
MEL351Q
GI
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EC
FE
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PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER DOOR LOCK
Wiring Diagram — D/LOCK — (Cont’d)
EL-403
FIG. 3
NBEL0387S03
MEL352Q
POWER DOOR LOCK
Wiring Diagram — D/LOCK — (Cont’d)
EL-404
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