Infiniti QX4. Electrical System (2003 year). Manual — part 14
System Description
NBEL0355
OUTLINE
NBEL0355S01
Electric sunroof system consists of
쐌
Sunroof switch
쐌
Sunroof motor
쐌
Smart entrance control unit
Smart entrance control unit controls retained power operation.
OPERATION
NBEL0355S02
The sunroof can be tilted up or down with the tilt switch.
The sunroof can be opened or closed automatically with the sunroof switch.
RETAINED POWER OPERATION
NBEL0355S04
When the ignition switch is turned to OFF position from ON or START position, power is supplied for 45 sec-
onds
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to power window relay terminal 2
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from smart entrance control unit terminal 46.
Ground is always supplied
쐌
to power window relay terminal 1
쐌
through body grounds.
When power and ground are supplied, power window relay continues to be energized, and the electrical sun-
roof can be operated.
When power is supplied, the electrical sunroof can be operated.
The retained power operation is canceled when the driver or passenger side door is opened.
RAP signal period can be changed by CONSULT-II. (EL-217)
INTERRUPTION DETECTION FUNCTION
NBEL0355S05
The CPU of sunroof motor monitors the sunroof motor operation and the sunroof position (full closed or other)
for sunroof by the signals from encoder and limit switch in sunroof motor.
When sunroof motor detects interruption during the following close operation,
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automatic close operation when ignition switch is in the “ON” position
쐌
automatic close operation during retained power operation
sunroof switch controls the motor for open and the sunroof will operate about 150 mm (5.91 in).
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER SUNROOF
System Description
EL-213
Wiring Diagram — SROOF —
NBEL0356
MEL400R
POWER SUNROOF
Wiring Diagram — SROOF —
EL-214
MEL326Q
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER SUNROOF
Wiring Diagram — SROOF — (Cont’d)
EL-215
SEL670Y
CONSULT-II Inspection Procedure
=NBEL0357
“RETAINED PWR”
NBEL0357S01
1.
Turn ignition switch “OFF”.
2.
Connect “CONSULT-II” and “CONSULT-II CONVERTER” to
the data link connector.
SKIA3098E
3.
Turn ignition switch “ON”.
4.
Touch “START (NISSAN BASED VHCL)”.
SEL398Y
5.
Touch “SMART ENTRANCE”.
If “SMART ENTRANCE” is not indicated, go to GI-42, “CON-
SULT-II Data Link Connector (DLC) Circuit”.
SEL273W
6.
Touch “RETAINED PWR”.
SEL400Y
7.
Select diagnosis mode.
“DATA MONITOR”, “ACTIVE TEST” and “WORK SUPPORT”
are available.
POWER SUNROOF
CONSULT-II Inspection Procedure
EL-216
CONSULT-II Application Items
NBEL0455
“RETAINED PWR”
NBEL0455S01
Data Monitor
NBEL0455S0101
Monitored Item
Description
IGN ON SW
Indicates [ON/OFF] condition of ignition switch.
DOOR SW-DR
Indicates [ON/OFF] condition of front door switch LH.
DOOR SW-AS
Indicates [ON/OFF] condition of front door switch RH.
Active Test
NBEL0455S0102
Test Item
Description
RETAINED PWR
This test is able to supply RAP signal (power) from smart entrance control unit to power
window system, power sunroof system. Those systems can be operated when turning on
“RETAINED PWR” on CONSULT-II screen even if the ignition switch is tuned OFF.
NOTE:
During this test, CONSULT-II can be operated with ignition switch “OFF” position.
“RETAINED PWR” should be turned “ON” or “OFF” on CONSULT-II screen when
ignition switch is ON. Then turn ignition switch OFF for checking retained power
operation. CONSULT-II might be stuck if “RETAINED PWR” is turned “ON” or “OFF”
on CONSULT-II screen when ignition switch is OFF.
Work Support
NBEL0455S0103
Work Item
Description
RETAINED PWR SET
RAP signal’s power supply period can be changed by mode setting. Selects RAP signal’s
power supply period between three steps.
쐌
MODE 1 (45 sec.)/MODE 2 (OFF)/MODE 3 (2 min.)
Trouble Diagnoses
NBEL0456
Symptom
Possible cause
Repair order
Power sunroof cannot be operated
using any switch.
1. 7.5A fuse, 40A fusible link and
M145 circuit breaker
2. Power window relay ground cir-
cuit
3. Sunroof motor ground circuit
4. Power window relay
5. Sunroof motor circuit
6. Sunroof switch
7. Sunroof switch circuit
8. Sunroof motor
1. Check 7.5A fuse [No. 11, located in fuse block
(J/B)], 40A fusible link (letter f, located in fuse and
fusible link box) and M145 circuit breaker. Turn igni-
tion switch “ON” and verify battery positive voltage is
present at terminals 2 and 3 of power window relay
and terminal 1 of sunroof motor.
2. Check power window relay ground circuit.
3. Check sunroof motor ground circuit.
4. Check power window relay.
5. Check the wire between power window relay and
sunroof motor.
6. Check sunroof switch.
7. Check harness between sunroof switch and sunroof
motor.
8. Check sunroof motor.
Power sunroof cannot be operated
using one of the sunroof switches.
1. Sunroof switch
2. Sunroof switch circuit
1. Check sunroof switch.
2. Check the harness between sunroof motor and sun-
roof switch.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER SUNROOF
CONSULT-II Application Items
EL-217
Symptom
Possible cause
Repair order
Power sunroof cannot be opened
or closed fully.
1. Full closed position not initial-
ized
2. Sunroof slide mechanism
3. Sunroof switch
4. Sunroof switch circuit
5. Sunroof motor
1. Initialize full closed position.
2. Check the following.
a. Check obstacles in sunroof, etc.
b. Check worn or deformed sunroof.
c. Check sunroof sash tilted too far inward or outward.
3. Check sunroof switch.
4. Check harness between sunroof motor and sunroof
switch.
5. Replace sunroof motor.
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)
Check RAP signal with CONSULT-II. Use “ACTIVE
TEST” mode, “RETAINED PWR” in “SMART
ENTRANCE”. (Refer to EL-217.)
If NG, go to the step b. below.
b. Verify 12 positive voltage from smart entrance con-
trol unit is present at terminal 2 of power window
relay:
쐌
Within 45 seconds after ignition switch turns off.
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
b. Driver or passenger side door switch ground circuit
c. Driver or passenger side door switch
3. Check smart entrance control unit. (EL-492)
POWER SUNROOF
Trouble Diagnoses (Cont’d)
EL-218
Wiring Diagram — MIRROR —
NBEL0360
MEL615P
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
DOOR MIRROR
Wiring Diagram — MIRROR —
EL-219
Wiring Diagram — TLID —
NBEL0479
MEL449O
GLASS HATCH OPENER
Wiring Diagram — TLID —
EL-220
Wiring Diagram — F/LID —
NBEL0480
MEL208N
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
FUEL FILLER LID OPENER
Wiring Diagram — F/LID —
EL-221
Wiring Diagram — SEAT —
NBEL0361
MEL830L
POWER SEAT
Wiring Diagram — SEAT —
EL-222
MEL601F
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
POWER SEAT
Wiring Diagram — SEAT — (Cont’d)
EL-223
Wiring Diagram — HSEAT —
NBEL0362
MEL973O
HEATED SEAT
Wiring Diagram — HSEAT —
EL-224
MEL832L
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
HEATED SEAT
Wiring Diagram — HSEAT — (Cont’d)
EL-225
Seatback Heating Unit
NBEL0363
SBT314
HEATED SEAT
Seatback Heating Unit
EL-226
Component Parts and Harness Connector
Location
NBEL0364
SEL701Y
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
AUTOMATIC DRIVE POSITIONER
Component Parts and Harness Connector Location
EL-227
System Description
=NBEL0365
OPERATIVE CONDITION
NBEL0365S01
The drive position can be set in 2 ways, manually and automatically.
Manual Operation
NBEL0365S0101
The driver’s seat can be adjusted for sliding, reclining, front cushion height and rear cushion height with the
LH power seat switches. The manual operation can be adjusted with the IGN key in any position.
Automatic Operation
NBEL0365S0102
The driver’s seat is adjusted to the proper positions for the driver automatically, in 3 different ways: MEMORY
AUTOMATIC SET, AUTOMATIC EXITING SETTING and AUTOMATIC SET RETURN. (Automatic Drive Posi-
tioner = ADP)
CONDITIONS INHIBITING AUTOMATIC OPERATION
NBEL0365S02
Automatic memory setting procedures are suspended under any of the following conditions:
1) When vehicle speed is more than 7 km/h (4 MPH).
2) When driver’s side power seat switch is turned on.
3) When any two of the switches (set switch and memory switches 1 and 2) are turned ON.
4) When cancel switch is turned on.
5) When selector lever is in any position other than “P”.
6) When ignition switch is turned to “START” position.
(Operation resumes when ignition switch is returned to “ON”.)
7) When detention switch malfunction is detected:
쐌
Detention switch failure is sensed when detention switch remains off for at least 2 seconds at a vehicle
speed of greater than 7 km/h (4 MPH).
FAIL-SAFE SYSTEM
NBEL0365S03
Output Failure
NBEL0365S0301
When the ignition switch is in the ON position, if any of the parts (indicated in the following chart) move more
than the specified amount within a period “T2” when no “ON” input is sent from any of the switches (indicated
in the following chart), or an output from the automatic drive positioner is not produced, an output failure is
sensed. Motor operation will be suspended automatically, and all automatic operations will be ineffective. (In
this case, the motor will not operate manually.)
OPERATED PORTION
T2
Allowable measurement
Seat sliding
Approx. 2.5 sec.
Within 6 mm (0.24 in)
Seat reclining
Same as above
Change angle within 1°
Absolving
NBEL0365S0302
When moving selector lever back to “P” position after having moved it to any position except “P”, fail-safe
operation will be canceled.
INITIALIZATION
NBEL0365S04
After reconnecting battery cable, perform initialization procedure A or B. If initialization has not been performed,
automatic drive positioner will not operate.
PROCEDURE A
1) Insert key in the ignition key cylinder. (Ignition switch is in “OFF” position.)
2) Open
,
close
,
open driver side door. (Do not perform with the door switch operation.)
3) End
PROCEDURE B
1) Drive the vehicle at more than 25 km/h (16 MPH).
2) End
AUTOMATIC DRIVE POSITIONER
System Description
EL-228
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