roof INFINITI QX4 2001 Factory User Guide

DRAIN HOSESNBBT0018S04
SBT376
SBT333
1. Remove headlining to access drain hose connections. (Refer
to ªRemoval and Installationº in ªROOF TRIMº, BT-32, for
detail.)
2. Check visually for proper connections, damage or
deterioration.
(The figure shows only the front side.)
SBT377
3. If leakage occurs around luggage room, remove luggage room
side trim and check connecting area. Check for proper
connection, damage or tear.
4. Remove drain hoses and check visually for any damage,
cracks, or deterioration.
5. Pour water into drain hoses and find damaged portion.
IIf any damaged portion is found at each step, replace the
damaged part.
WEATHERSTRIPNBBT0018S05IIn the case of leakage around glass lid, close glass lid and pour
water over glass lid to find damaged or gap portion.
1. Remove glass lid assembly. (Refer to removal procedures,
BT-45, for details.)
2. Visually check weatherstrip for proper installation. If a gap
exists between glass lid and weatherstrip, check for sufficient
amount of butyl seal. If required, remove weatherstrip and
apply butyl seal.
Refer to ªEXTERIORº (BT-35), for details.
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SUNROOF
Trouble Diagnoses (Cont'd)
BT-51

3. Check weatherstrip visually for any damage, deterioration, or
flattening.
IIf any damage is found, replace weatherstrip.
CAUTION:
Do not remove weatherstrip except when replacing, or filling
up butyl seal.
LINK AND WIRE ASSEMBLYNBBT0018S06NOTE:
Before replacing a suspect part, carefully ensure it is the source of
noise being experienced.
1. Check link to determine if coating film has peeled off to such
an extent that substrate is visible. Check also to determine if
link is the source of noise. If it is, replace it.
2. Visually check to determine if a sufficient amount of petroleum
jelly has been applied to wire or rail groove. If not, add petro-
leum jelly as required.
3. Check wire for any damage or deterioration. If any damage is
found, remove rear guide (refer to removal procedures, BT-45
for details), then replace wire.
SUNROOF
Trouble Diagnoses (Cont'd)
BT-52

Electrical Components Inspection ...........................108
COMPASS AND THERMOMETER............................. 110
System Description .................................................. 110
Wiring Diagram - COMPAS -................................... 111
Trouble Diagnoses................................................... 112
Calibration Procedure for Compass ........................ 113
WARNING LAMPS...................................................... 114
Schematic ................................................................ 114
Wiring Diagram - WARN - ....................................... 115
Fuel Warning Lamp Sensor Check .........................122
Electrical Components Inspection ...........................122
A/T INDICATOR...........................................................123
Wiring Diagram - AT/IND -.......................................123
WARNING CHIME.......................................................125
Component Parts and Harness Connector
Location ...................................................................125
System Description ..................................................125
Wiring Diagram - CHIME - ......................................127
Trouble Diagnoses...................................................129
FRONT WIPER AND WASHER..................................136
System Description ..................................................136
Wiring Diagram - WIPER - ......................................138
Removal and Installation .........................................139
Washer Nozzle Adjustment .....................................140
Washer Tube Layout ...............................................140
REAR WIPER AND WASHER....................................141
System Description ..................................................141
Wiring Diagram - WIP/R -........................................143
Trouble Diagnoses...................................................145
Removal and Installation .........................................145
Washer Nozzle Adjustment .....................................146
Washer Tube Layout ...............................................146
Check Valve .............................................................146
HORN...........................................................................147
Wiring Diagram - HORN - .......................................147
CIGARETTE LIGHTER................................................148
Wiring Diagram - CIGAR -.......................................148
CLOCK.........................................................................150
Wiring Diagram - CLOCK -......................................150
REAR WINDOW DEFOGGER.....................................151
Component Parts and Harness Connector
Location ...................................................................151
System Description ..................................................151
Wiring Diagram - DEF - ...........................................153
Trouble Diagnoses...................................................155
Electrical Components Inspection ...........................157
Filament Check ........................................................157
Filament Repair .......................................................158
AUDIO..........................................................................160
System Description ..................................................160
Schematic ................................................................161
Wiring Diagram - AUDIO - .......................................162Trouble Diagnoses...................................................166
Inspection.................................................................167
Wiring Diagram - REMOTE -...................................168
AUDIO ANTENNA.......................................................169
System Description ..................................................169
Wiring Diagram - P/ANT - .......................................170
Trouble Diagnoses...................................................171
Location of Antenna .................................................171
Antenna Rod Replacement .....................................171
POWER SUNROOF.....................................................173
System Description ..................................................173
Wiring Diagram - SROOF - .....................................174
Trouble Diagnoses...................................................176
DOOR MIRROR...........................................................177
Wiring Diagram - MIRROR - ...................................177
GLASS HATCH OPENER...........................................178
System Description ..................................................178
Wiring Diagram - TLID - ..........................................179
FUEL FILLER LID OPENER.......................................180
Wiring Diagram - F/LID - .........................................180
POWER SEAT.............................................................181
Wiring Diagram - SEAT - .........................................181
HEATED SEAT............................................................183
Wiring Diagram - HSEAT - ......................................183
Seatback Heating Unit .............................................185
AUTOMATIC DRIVE POSITIONER............................186
Component Parts and Harness Connector
Location ...................................................................186
System Description ..................................................187
Schematic ................................................................190
Wiring Diagram - AUT/DP - .....................................191
On Board Diagnosis ................................................196
Trouble Diagnoses...................................................198
AUTOMATIC SPEED CONTROL DEVICE (ASCD)...221
Component Parts and Harness Connector
Location ...................................................................221
System Description ..................................................222
Schematic ................................................................224
Wiring Diagram - ASCD - ........................................225
Fail-safe System ......................................................229
Trouble Diagnoses...................................................230
Electrical Component Inspection .............................239
ASCD Wire Adjustment ...........................................240
POWER WINDOW.......................................................241
System Description ..................................................241
Schematic ................................................................244
Wiring Diagram - WINDOW - ..................................245
Trouble Diagnoses...................................................250
POWER DOOR LOCK.................................................254
Component Parts and Harness Connector
Location ...................................................................254
System Description ..................................................254
CONTENTS(Cont'd)
EL-2

System DescriptionNBEL0206OUTLINENBEL0206S01Electric sunroof system consists of
ISunroof switch
ISunroof motor
IPower window relay
ISmart entrance control unit
Smart entrance control unit controls retained power operation.
OPERATIONNBEL0206S02The sunroof can be opened or closed and tilted up or down with the sunroof switch.
AUTO OPERATIONNBEL0206S03The power sunroof AUTO feature makes it possible to open and close the sunroof without holding the sunroof
switch in the down or up position.
RETAINED POWER OPERATIONNBEL0206S04When the ignition switch is turned to OFF position from ON or START position, power is supplied for 45 sec-
onds
Ito power window relay terminal 2
Ifrom smart entrance control unit terminal 5.
Ground is always supplied
Ito power window relay terminal 1
Ithrough body grounds.
When power and ground are supplied, power window relay continues to be energized, and the electrical sun-
roof can be operated.
The retained power operation is canceled when the driver or passenger side door is opened.
INTERRUPTION DETECTION FUNCTIONNBEL0206S05The 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,
Iautomatic close operation when ignition switch is in the ªONº position
Iautomatic close operation during retained power operation
sunroof switch controls the motor for open and the sunroof will operate about 150 mm (5.91 in).
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POWER SUNROOF
System Description
EL-173

Wiring Diagram Ð SROOF ÐNBEL0089
MEL007O
POWER SUNROOF
Wiring Diagram Ð SROOF Ð
EL-174

MEL826L
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POWER SUNROOF
Wiring Diagram Ð SROOF Ð (Cont'd)
EL-175

Trouble DiagnosesNBEL0207
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 motor1. Check 7.5A fuse [No. 11, located in fuse block
(J/B)], 40A fusible link (letterf, located in fuse and
fusible link box) and M145 circuit breaker. Turn igni-
tion switch ªONº 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 circuit1. Check sunroof switch.
2. Check the harness between sunroof motor and sun-
roof switch.
Power sunroof auto function cannot
be operated properly.1. Sunroof slide mechanism
2. Sunroof switch
3. Sunroof switch circuit
4. Sunroof motor1. 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.
2. Check sunroof switch.
3. Check harness between sunroof motor and sunroof
switch.
4. 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 unit1. Check harness between power window relay termi-
nal 2 and smart entrance control unit terminal 5.
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)
POWER SUNROOF
Trouble Diagnoses
EL-176

DescriptionNBEL0124The following systems are controlled by the smart entrance control unit.
IWarning chime
IRear window defogger and door mirror defogger timer
IPower door lock
IMulti-remote control system
ITheft warning system
IInterior lamp timer
IElectric sunroof and power window timer
IHeadlamp battery saver
IBattery saver
For detailed description and wiring diagrams, refer to the relevant pages for the each system.
The smart entrance control unit receives data from the switches and sensors to control their corresponding
system relays and actuators.
INPUT/OUTPUTNBEL0124S01
System Input Output
Power door lockDoor lock and unlock switch LH and RH
Key switch (Insert)
Door switches
Door key cylinder switchesDoor lock actuator
Multi-remote controlKey switch (Insert)
Ignition switch (ACC)
Door switches
Front door unlock sensor LH
Door lock and unlock switch LH
Remote controller signalHorn relay
Headlamp relay (LH and RH)
Interior lamp
Multi-remote control relay
Door lock actuator
Warning chimeKey switch (Insert)
Ignition switch (ON)
Lighting switch (1st)
Seat belt switch
Front door switch LHWarning chime (located in smart entrance
control unit)
Rear window defogger and
door mirror defogger timerIgnition switch (ON)
Rear window defogger switchRear window defogger relay
Theft warningIgnition switch (ACC, ON)
Door switches
Hood switch
Glass hatch switch
Door key cylinder switches (lock/unlock)
Door unlock sensoresHorn relay
Headlamp relay (LH and RH)
Security indicator
Interior lamp timerDoor switches
Front door unlock sensor LH
Ignition switch (ON)
Key switch (Insert)Interior lamp
Electric sunroof and power
window timerFront door switches
Ignition switch (ON)Power window relay
Headlamp battery saver timerFront door switches
Ignition switch (ON)Headlamp battery saver control unit
Battery saverIgnition switch (ON)
Door switches
Driver's door unlock sensor
Key switch (Insert)Interior lamp
Luggage room lamp
Spot lamp
Vanity mirror illumination lamp
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SMART ENTRANCE CONTROL UNIT
Description
EL-319

IThe vehicle location data is calculated using GPS.
IThe vehicle ignition switch must be turned to the ON position
to obtain the vehicle location. (This is because the system is
in the sleep mode when the ignition switch is OFF.)
IOnce this function starts up, regardless of the ignition switch
position, the system keeps transmitting the vehicle location
until the cancel signal is transmitted from the Communicator
Response Center.
IWhile this function is operating, the operator can covertly moni-
tor what is happening inside the vehicle through the hands-free
microphone.
Alarm NotificationNBEL0180S0405IWhen theft warning system sounds an alarm for more than 7
seconds because of improper access, the alarm signal is
transmitted from the smart entrance control unit to the IVCS
unit, and the system executes automatic dialing to the Com-
municator Response Center.
If the alarm is reset before 7 seconds has elapsed, the
INFINITI Communicator will not place a call to the Communi-
cator Response Center.
IThis function operates regardless of ignition switch position.
IWhile this function is operating, the operator can covertly moni-
tor what is happening inside the vehicle through the hands-free
microphone.
Remote Door UnlockNBEL0180S0406IWhen the door is locked with the key inside the vehicle, the
door can be unlocked by contacting the Communicator
Response Center. (Proof that the person calling is the owner
must be received by the Communicator Response Center.)
IWhen the ignition key is in the ªOFFº position, the system is in
the sleep mode. Therefore, back door outside handle must be
pulled to wake up the system.
ITo perform remote door unlock, call the Communicator
Response Center and follow the operator's instructions.
NOTE:
IWhen the system contacts the Communicator Response
Center, data including the vehicle location is transmitted
to the Communicator Response Center.
ICommunication with the Communicator Response Center
is not completed until the completion signal is transmitted
from the Communicator Response Center. (Any calls to
the Communicator Response Center can only be termi-
nated by Communicator Response Center.)
IFunctions other than alarm notification and remote door
unlock operate while the ignition switch is ON and only for
three minutes after the switch is turned OFF.
IOnce a call to the Communicator Response Center is
made, the communication continues regardless of the
ignition key switch position.
IAll the voice communication with the Communicator
Response Center is made through the hands-free tele-
phone.
IWhen the INFINITI Communicator system is activated, the
handset does not function.
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INFINITI COMMUNICATOR (IVCS)
System Description (Cont'd)
EL-353

How to Read Harness LayoutNBEL0131
SEL252V
The following Harness Layouts use a map style grid to help locate connectors on the drawings:
IMain Harness
IEngine Room Harness (Engine Compartment)
IEngine Control Harness
TO USE THE GRID REFERENCENBEL0131S011. Find the desired connector number on the connector list.
2. Find the grid reference.
3. On the drawing, find the crossing of the grid reference letter column and number row.
4. Find the connector number in the crossing zone.
5. Follow the line (if used) to the connector.
CONNECTOR SYMBOLNBEL0131S02Main symbols of connector (in Harness Layout) are indicated in the below.
Connector typeWater proof type Standard type
Male Female Male Female
ICavity: Less than 4
IRelay connector
ICavity: From 5 to 8
ICavity: More than 9
ÐÐ
IGround terminal etc.
Ð
HARNESS LAYOUT
How to Read Harness Layout
EL-440