2005 INFINITI QX4 battery

PG-6
POWER SUPPLY ROUTING CIRCUIT
Revision: October 20052005 QX56
Wiring Diagram — POWER —EKS00BN1
BATTERY POWER SUPPLY — IGNITION SW. IN ANY POSITION
WKWA2618E

PG-26
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: October 20052005 QX56
IPDM E/R Power/Ground Circuit InspectionEKS00BN9
1. FUSE AND FUSIBLE LINK INSPECTION
Check that the following fusible links or IPDM E/R fuses are not blown.
OK or NG
OK >> GO TO 2.
NG >> Replace fuse or fusible link.
2. POWER CIRCUIT INSPECTION
1. Disconnect IPDM E/R harness connector E118.
2. Check voltage between IPDM E/R harness connector E118 terminals 1 (B/Y), 2 (R) and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace IPDM E/R power circuit harness.
3. GROUND CIRCUIT INSPECTION
1. Disconnect IPDM E/R harness connectors E122 and E124.
2. Check continuity between IPDM E/R harness connector E122
terminal 38 (B), and E124 terminal 59 (B) and ground.
OK or NG
OK >> Inspection End.
NG >> Repair or replace ground circuit harness of IPDM E/R.
Terminal No. Signal name Fuse, fusible link No.
1, 2, 22 Battery power a, c, d, e, l
Battery voltage should exist.
SKIA1987E
Continuity should exist.
WKIA1453E

PG-28
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: October 20052005 QX56
Removal and Installation of IPDM E/REKS00BNB
REMOVAL
1. Disconnect negative battery cable.
2. Remove IPDM E/R upper cover.
3. Release 2 clips and pull IPDM E/R up from case.
4. Disconnect IPDM E/R connectors and remove the IPDM E/R.
INSTALLATION
Installation is in the reverse order of removal.
WKIA1454E
WKIA1696E

RF-2
PRECAUTIONS
Revision: October 20052005 QX56
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EIS004VI
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WAR NIN G:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions EIS004VJ

Disconnect both battery cables in advance.

Never tamper with or force air bag lid open, as this may adversely affect air bag performance.

Be careful not to scratch pad and other parts.

When removing or disassembling any part, be careful not to damage or deform it. Protect parts which may
get in the way with cloth.

When removing parts with a screwdriver or other tool, protect parts by wrapping them with vinyl or tape.

Keep removed parts protected with cloth.

If a clip is deformed or damaged, replace it.

If an unreusable part is removed, replace it with a new one.

Tighten bolts and nuts firmly to the specified torque.

After re-assembly has been completed, make sure each part functions correctly.

Remove stains in the following way.
Water-soluble stains:
Dip a soft cloth in warm water, and then squeeze it tightly. After wiping the stain, wipe with a soft dry cloth.
Oil stain:
Dissolve a synthetic detergent in warm water (density of 2 to 3% or less), dip the cloth, then clean off the stain
with the cloth. Next, dip the cloth in fresh water and squeeze it tightly. Then clean off the detergent completely.
Then wipe the area with a soft dry cloth.

Do not use any organic solvent, such as thinner or benzine.

SUNROOF
RF-11
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Revision: October 20052005 QX56
TILT UP OPERATION
When the tilt switch is operated for tilt up, ground is supplied

to sunroof motor assembly terminal 4

through sunroof switch terminal 4

through sunroof switch terminal 2

through sunroof motor assembly terminal 8

through grounds M57, M61 and M79.
Then, the sunroof will tilt up.
TILT DOWN OPERATION
When the tilt switch is operated for tilt down, ground is supplied

to sunroof motor assembly terminal 10

through sunroof switch terminal 6

through sunroof switch terminal 2

through sunroof motor assembly terminal 8

through grounds M57, M61 and M79.
Then, the sunroof will tilt down.
SLIDE OPEN OPERATION
When the switch is operated for slide open, ground is supplied

to sunroof motor assembly terminal 9

through sunroof switch terminal 3

through sunroof switch terminal 2

through sunroof motor assembly terminal 8

through grounds M57, M61 and M79.
Then, the sunroof will slide open.
SLIDE CLOSE OPERATION
When the switch is operated for slide close, ground is supplied

to sunroof motor assembly terminal 3

through sunroof switch terminal 1

through sunroof switch terminal 2

through sunroof motor assembly terminal 8

through grounds M57, M61 and M79.
Then, the sunroof will slide closed.
RETAINED POWER OPERATION
When the ignition switch is turned to OFF position from ON or START position, power is supplied for 45 sec-
onds.
The retained power operation is canceled when the driver or passenger side door is opened.
RAP signal period can be changed by CONSULT-II. Refer to RF-16, "
CONSULT-II Function (BCM)" .
MEMORY RESET PROCEDURE
If the battery is disconnected, or the sunroof motor harness connector is disconnected, the slide switch will
become inoperable and the sunroof motor memory must be reset. To reset the sunroof motor memory from
any sunroof position (full open, partially open, closed, partially vented, and vented), push and hold the sunroof
tilt switch in the forward (DOWN) position until the sunroof is fully closed. After it has closed all the way, push
and hold the tilt switch forward (DOWN) for more than 2 seconds to re-establish the motor preset position. The
sunroof should now operate normally.
INTERRUPTION DETECTION FUNCTION
The CPU (central processing unit) monitors the sunroof motor operation and the sunroof position (fully-closed
or other) by the signals from the sunroof motor.
When sunroof motor detects an interruption during the following sliding close operations, sunroof switch con-
trols the motor for open and the sunroof will operate until it reaches full open position.

SUNROOF
RF-15
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Revision: October 20052005 QX56
Terminals and Reference Values for BCMEIS004VT
Terminals and Reference Values for Sunroof Motor AssemblyEIS004VU
Work FlowEIS004VV
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to RF-10, "
System Description" .
3. According to the trouble diagnosis chart, repair or replace the cause of the malfunction.
Refer to RF-17, "
Trouble Diagnosis Chart by Symptom" .
4. Does sunroof system operate normally? If Yes, GO TO 5, If No, GO TO 3.
5. Inspection End.
Terminal Wire Color Item ConditionVoltage
(Approx.)
12 R/L Front door switch RH signalON (Open) 0
OFF (Close) Battery voltage
38 W/L Ignition power supply Ignition switch ON Battery voltage
47 SB Front door switch LH signalON (Open) 0
OFF (Close) Battery voltage
67 B Ground — —
68 W/L RAP signalIgnition switch ON Battery voltage
Within 45 second after ignition switch is turned
OFF Battery voltage
When front door LH or RH is open while
retained power is operating0
69 W/R Power window power supply — Battery voltage
70 W/B BAT power supply — Battery voltage
Terminal Wire Color Item ConditionVo ltag e
(Approx.)
1 W/L RAP signalIgnition switch ON Battery voltage
Within 45 second after ignition switch is
turned OFFBattery voltage
When front door LH or RH is open while
retained power is operating0
3 P/W Sunroof switch CLOSE signalIgnition switch ON and sunroof switch
CLOSE position0
Other than above Battery voltage
4 O Sunroof switch TILT UP signalIgnition switch ON and sunroof switch in
TILT UP position0
Other than above Battery voltage
5 W/R BAT power supply — Battery voltage
7 B Ground — —
8 Y Ground signal — —
9 P Sunroof switch OPEN signalIgnition switch ON and sunroof switch
OPEN position0
Other than above Battery voltage
10 L/R Sunroof switch TILT DOWN signalIgnition switch ON and sunroof switch in
TILT DOWN position0
Other than above Battery voltage

RF-18
SUNROOF
Revision: October 20052005 QX56
BCM Power Supply and Ground Circuit CheckEIS004W1
1. CHECK FUSE
Check the following BCM fuse and fusible link.
NOTE:
Refer to RF-10, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of blown fuse before installing new fuse. Refer to PG-
4, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connectors.
3. Check voltage between BCM connectors M18 and M20 termi-
nals 38, 70 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
Check continuity between BCM connector M20 terminal 67 and
ground.
OK or NG
OK >> Power supply and ground circuit is OK.
NG >> Repair or replace harness.
Retained power operation does not operate properly.1. Check the retained power operation mode settingRF-112. BCM power supply and ground circuit checkRF-18
3. Door switch checkRF-21
4. Replace sunroof motor assemblyRF-27
Motor does not stop at the sunroof fully-open or fully-
closed position.1. Initialization procedure checkRF-11
2. Replace sunroof motor assemblyRF-27
Sunroof does not do the interruption detection. 1. Replace sunroof motor assemblyRF-27
Symptom Diagnostic procedure and repair order Refer to page
Component Parts Terminal No. (SIGNAL) Ampere No. Location
BCM38 (IGN power supply) 10A 59 Fuse and relay box
70 (BAT power supply) 50A f Fuse and fusible link box
ConnectorTerminals
(Wire color)
ConditionVo l ta g e
(Approx.)
(+) (–)
M18 38 (W/L)
GroundIgnition switch ON
Battery voltage
M20 70 (W/B) Igniting switch OFF
WIIA0229E
Connector Terminals (Wire color) Continuity
M20 67 (B) Ground YES
LIIA0915E

RF-20
SUNROOF
Revision: October 20052005 QX56
Sunroof Motor Assembly Power Supply and Ground Circuit CheckEIS004W3
1. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the sunroof motor assembly connector.
3. Turn ignition switch ON.
4. Check voltage between sunroof motor assembly connector R4 terminals 1(W/L), 5 (W/R) and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between sunroof motor assembly connector R4 terminal 7 (B) and ground.
OK or NG
OK >> Sunroof motor assembly power supply and ground cir-
cuits are OK. Further inspection is necessary. Refer to
RF-17, "
Trouble Diagnosis Chart by Symptom" .
NG >> Repair or replace harness.
3. CHECK BCM OUTPUT SIGNAL
Check voltage between BCM connector M20 terminals 68, 69 and
ground.
OK or NG
OK >> GO TO 4.
NG >> Replace BCM. Refer to BCS-20, "
Removal and Installa-
tion of BCM" .
ConnectorTerminals (Wire color)
Condition Voltage
(Approx.)
(+) (–)
R41 (W/L)
GroundIgnition switch ON Battery voltage
Within 45 seconds after
ignition switch is turned
OFFBattery voltage
When front door LH or
RH is open while retained
power is operating0
5 (W/R) Ignition switch OFF Battery voltage
WIIA0250E
7 (B) - Ground : Continuity should exist.
WIIA0251E
68 (W/L) - Ground : Battery voltage
69 (W/R) - Ground : Battery voltage
WIIA0425E