IDX INFINITI QX4 2001 Factory Service Manual

System DescriptionNBEL0102Power is supplied at all times
Ifrom 40A fusible link (letterf, located in the fuse and fusible link box)
Ito circuit breaker terminal 1
Ithrough circuit breaker terminal 2
Ito power window relay terminal 3,
Ito front power window main switch terminal 4, and
Ito front power window switch RH terminal 6.
With ignition switch in ON or START position, power is supplied
Ithrough 7.5A fuse [No. 11, located in the fuse block (J/B)]
Ito power window relay terminal 2, and
Ito smart entrance control unit terminal 33.
Ground is supplied to power window relay terminal 1
Ithrough body grounds M4, M66 and M147.
The power window relay is energized and power is supplied
Ithrough power window relay terminal 5
Ito front power window main switch terminal 11,
Ito front power window switch RH terminal 13,
Ito rear power window switch LH and RH terminals 5.
MANUAL OPERATIONNBEL0102S01Front Door LHNBEL0102S0101Ground is supplied
Ito front power window main switch terminal 5
Ithrough body grounds M77 and M111.
WINDOW UP
When the front LH switch in the front power window main switch is pressed in the up position, power is sup-
plied
Ito front power window regulator LH terminal 1
Ithrough front power window main switch terminal 2.
Ground is supplied
Ito front power window regulator LH terminal 3
Ithrough front power window main switch terminal 3.
Then, the motor raises the window until the switch is released.
WINDOW DOWN
When the LH switch in the front power window main switch is pressed in the down position, power is supplied
Ito front power window regulator LH terminal 3
Ithrough front power window main switch terminal 3.
Ground is supplied
Ito front power window regulator LH terminal 1
Ithrough front power window main switch terminal 2.
Then, the motor lowers the window until the switch is released.
Front Door RHNBEL0102S0102Ground is supplied
Ito front power window main switch terminal 5
Ithrough body grounds M77 and M111.
NOTE:
Numbers in parentheses are terminal numbers, when power window switch is pressed in the UP and DOWN
positions respectively.
FRONT POWER WINDOW MAIN SWITCH OPERATION
When front RH switch in the front power window main switch is pressed UP or DOWN, a signal is supplied
Ithrough front power window main switch terminal 8
GI
MA
EM
LC
EC
FE
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PD
AX
SU
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BT
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IDX
POWER WINDOW
System Description
EL-241

Ito power window relay terminal 1
Ithrough body grounds.
When power and ground are supplied, the power window relay continues to be energized, and the power win-
dow can be operated.
The retained power operation is canceled when the driver or passenger side door is opened.
INTERRUPTION DETECTION FUNCTIONNBEL0102S05Front power window main switch and front power window switch RH monitor the power window regulator motor
operation and the power window position (full closed or other) for driver's and passenger's power window by
the signals from encoder and limit switch in front power window regulator LH or RH.
When front power window main switch or front power window switch RH detects interruption during the fol-
lowing close operation in the driver's or front passenger's side door,
Iautomatic close operation when ignition switch is in the ªONº position
Iautomatic close operation during retained power operation
front power window main switch or front power window switch RH controls driver's or front passenger's power
window regulator motor for open and the power window will be lowered about 150 mm (5.91 in).
GI
MA
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PD
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BT
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IDX
POWER WINDOW
System Description (Cont'd)
EL-243

Wiring Diagram Ð WINDOW ÐNBEL0104
MEL008O
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER WINDOW
Wiring Diagram Ð WINDOW Ð
EL-245

MEL845L
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER WINDOW
Wiring Diagram Ð WINDOW Ð (Cont'd)
EL-247

MEL847L
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER WINDOW
Wiring Diagram Ð WINDOW Ð (Cont'd)
EL-249

Symptom Possible cause Repair order
Front passenger side power win-
dow automatic operation does not
function properly.1. Front power window switch RH
2. Encoder and limit switch1. Check front power window switch RH.
2. Check encoder and limit switch. (EL-252)
Retained power operation does not
operate properly.1. RAP signal circuit
2. Driver or passenger side door
switch circuit
3. Smart entrance control unit1. Check harness between power window relay termi-
nal 2 and smart entrance control unit terminal 5 for
open or short circuit.
2. Check the following.
a. Harness between smart entrance control unit and
driver or passenger side door switch for short circuit
b. Driver or passenger side door switch ground circuit
c. Driver or passenger side door switch
3. Check smart entrance control unit. (EL-324)
GI
MA
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LC
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IDX
POWER WINDOW
Trouble Diagnoses (Cont'd)
EL-251

4 RESET LIMIT SWITCH
Reset limit switch. Refer to BT-19, ªFront Door Glass Limit Switch Resetº. Then check voltage between front power win-
dow main switch terminal 15 or front power window switch RH terminal 16 and ground during power window closing
operation at least ten times.
SEL726WA
OK or NG
OK©GO TO 5.
NG©Replace power window regulator motor.
5 CHECK ENCODER
Measure voltage between front power window main switch terminal 14 or front power window switch RH terminal 19 and
ground with oscilloscope when power window is in automatic closing operation.
SEL727WA
OK or NG
OK©Replace power window main switch.
NG©Replace power window regulator motor.
GI
MA
EM
LC
EC
FE
AT
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PD
AX
SU
BR
ST
RS
BT
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SC
IDX
POWER WINDOW
Trouble Diagnoses (Cont'd)
EL-253

SchematicNBEL0108
MEL211M
GI
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LC
EC
FE
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PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER DOOR LOCK
Schematic
EL-255

FIG. 2NBEL0109S02
MEL849L
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
Wiring Diagram Ð D/LOCK Ð (Cont'd)
EL-257

FIG. 4NBEL0109S04
MEL851L
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER DOOR LOCK
Wiring Diagram Ð D/LOCK Ð (Cont'd)
EL-259