lock INFINITI QX56 2006 Factory Service Manual

GW-8
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Revision: November 20092006 QX56
TRUNK
Trunk noises are often caused by a loose jack or loose items put into the trunk by the owner.
In addition look for:
1. Trunk lid bumpers out of adjustment
2. Trunk lid striker out of adjustment
3. The trunk lid torsion bars knocking together
4. A loose license plate or bracket
Most of these incidents can be repaired by adjusting, securing or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINER
Noises in the sunroof/headliner area can often be traced to one of the following:
1. Sunroof lid, rail, linkage or seals making a rattle or light knocking noise
2. Sun visor shaft shaking in the holder
3. Front or rear windshield touching headliner and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
OVERHEAD CONSOLE (FRONT AND REAR)
Overhead console noises are often caused by the console panel clips not being engaged correctly. Most of
these incidents are repaired by pushing up on the console at the clip locations until the clips engage.
In addition look for:
1. Loose harness or harness connectors.
2. Front console map/reading lamp lense loose.
3. Loose screws at console attachment points.
SEATS
When isolating seat noise it's important to note the position the seat is in and the load placed on the seat when
the noise is present. These conditions should be duplicated when verifying and isolating the cause of the
noise.
Cause of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. The rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of these incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted underhood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move or insulate one component at a time and test drive the vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.

POWER WINDOW SYSTEMGW-15
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POWER WINDOW SYSTEMPFP:25401
Component Parts and Harness Connector LocationEIS005XN
1. Fuse block (J/B)2. Fuse and fusible link box3. Fuse and relay box
LIIA2357E

GW-16
POWER WINDOW SYSTEM
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System DescriptionEIS005XO
Power is supplied at all time

from 50A fusible link (letter f , located in the fuse and fusible link box)

to BCM terminal 70

through BCM terminal 69

to main power window and door lock/unlock switch terminal 19

to power window and door lock/unlock switch RH terminal 10.
With ignition switch in ON or START position, power is supplied

through 10A fuse (No. 59, located in the fuse and relay box)

to BCM terminal 38

through BCM terminal 68

to main power window and door lock/unlock switch terminal 10.

to rear power vent window relays (OPEN and CLOSE) terminal 1.
With ignition switch in ON or START position, ground is supplied

to BCM terminal 67

to main power window and door lock/unlock switch terminal 17

to power window and door lock/unlock switch RH terminal 11

through body grounds M57, M61 and M79.
MANUAL OPERATION
Front Door LH
WINDOW UP
When the front LH switch in the main power window and door lock/unlock switch is pressed in the up position,
power is supplied

through main power window and door lock/unlock switch terminal 8

to front power window motor LH terminal 2.
Ground is supplied

through main power window and door lock/unlock switch terminal 11

to front power window motor LH terminal 1.
Then, the motor raises the window until the switch is released.
WINDOW DOWN
When the front LH switch in the main power window and door lock/unlock switch is pressed in the down posi-
tion, power is supplied

through main power window and door lock/unlock switch terminal 11

to front power window motor LH terminal 1.
Ground is supplied

through main power window and door lock/unlock switch terminal 8

to front power window motor LH terminal 2.
Then, the motor lowers the window until the switch is released.
4. A. Steering column B. BCM M18, M19, M20
(View with instrument panel
removed) 5. A. Main power window and door
lock/unlock switch D7, D8
Power window and door lock/unlock
switch RH D105
B. Front door switch LH B8, RH
B108
C. Front power window motor LH
D9, RH D104
D. Front door lock actuator LH (key
cylinder switch) 6. A. Rear power window switch LH
D203, RH D303
B. Rear power window motor LH
D204, RH D304
7. A. Rear power vent window relay (CLOSE)
B. Rear power vent window relay
(OPEN) 8. Rear power vent window switch
R103 9. A. Rear power vent window motor
LH B52, RH B150
B. Condenser-3 B119
Condenser-4 B120

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Front Door RH
POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH OPERATION
WINDOW UP
When the power window and door lock/unlock switch RH is pressed in the up position, power is supplied

through power window and door lock/unlock switch RH terminal 8

to front power window motor RH terminal 2.
Ground is supplied

through power window and door lock/unlock switch RH terminal 9

to front power window motor RH terminal 1.
Then, the motor raises the window until the switch is released.
WINDOW DOWN
When the power window and door lock/unlock switch RH is pressed in the down position, power is supplied

through power window and door lock/unlock switch RH terminal 9

to front power window motor RH terminal 1.
Ground is supplied

through power window and door lock/unlock switch RH terminal 8

to front power window motor RH terminal 2.
Then, the motor lowers the window until the switch is released.
MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OPERATION
Signal is sent

through main power window and door lock/unlock switch terminal 14

to power window and door lock/unlock switch RH terminal 16.
The operation of power window after receiving the signal is the same as operating the power window with
power window and door lock/unlock switch RH.
Rear Door (LH or RH)
REAR POWER WINDOW SWITCH LH OR RH OPERATION
WINDOW UP
When the rear power window switch LH or RH is pressed in the up position, power is supplied

to rear power window control unit LH or RH terminal 13

through rear power window control unit LH or RH terminal 7

through rear power window switch LH or RH terminal 2 and 3

through rear power window switch LH or RH terminal 5

through rear power window control unit LH or RH terminal 11

to rear power window motor LH or RH terminal 2.
Ground is supplied

to rear power window control unit LH or RH terminal 15

through rear power window control unit LH or RH terminal 16

through rear power window switch LH or RH terminal 1 and 7

through rear power window switch LH or RH terminal 4

through rear power window control unit LH or RH terminal 12

to rear power window motor LH or RH terminal 1.
Then, the motor raises the window until the switch is released.
WINDOW DOWN
When the rear power window switch LH or RH is pressed in the down position, power is supplied

to rear power window control unit LH or RH terminal 1

through rear power window control unit LH or RH terminal 7

through rear power window switch LH or RH terminal 2 and 3

through rear power window switch LH or RH terminal 4

through rear power window control unit LH or RH terminal 12

to rear power window motor LH or RH terminal 1.
Ground is supplied

GW-18
POWER WINDOW SYSTEM
Revision: November 20092006 QX56

to rear power window control unit LH or RH terminal 15

through rear power window control unit LH or RH terminal 16

through rear power window switch LH or RH terminal 1 and 7

through rear power window switch LH or RH terminal 5

through rear power window control unit LH or RH terminal 11

to rear power window motor LH or RH terminal 2.
Then, the motor lowers the window until the switch is released.
MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OPERATION
Signal is sent

through main power window and door lock/unlock switch terminal 14

to rear power window control unit LH or RH terminal 1.
The operation of power window after receiving the signal is the same as operating the power window with rear
power window switch LH or RH.
VENT WINDOW CLOSE
When the rear power vent window switch is pressed in the close position, power is supplied

to rear power vent window relay (CLOSE) terminal 5

through rear power vent window relay (CLOSE) terminal 3

to rear power vent window motors terminal 2.
Ground is supplied

to rear power vent window relay (OPEN) terminal 4

through rear power vent window relay (OPEN) terminal 3

to rear power vent window motors terminal 1.
Then, the motors close the windows until the switch is released.
VENT WINDOW OPEN
When the main power window and door lock/unlock switch (rear LH) is pressed in the open position, power is
supplied

to rear power vent window relay (OPEN) terminal 5

through rear power vent window relay (OPEN) terminal 3

to rear power vent window motors terminal 1.
Ground is supplied

to rear power vent window relay (CLOSE) terminal 4

through rear power vent window relay (CLOSE) terminal 3

to rear power vent window motors terminal 2.
Then, the motors open the windows until the switch is released.
AUTO OPERATION
The power window AUTO feature enables the driver to open or close the window without holding the window
switch in the down or up position.
POWER WINDOW SERIAL LINK
Main power window and door lock/unlock switch, power window and door lock/unlock switch RH, rear power
window control units and BCM transmit and receive the signal by power window serial link.
The signal is transmitted from BCM to main power window and door lock/unlock switch and power window and
door lock/unlock switch RH

Keyless power window down signal.

Rear power window switch illumination.
The signal is transmitted from main power window and door lock/unlock switch to power window and door
lock/unlock switch RH

Front door window RH operation signal.

Power window control by front door lock assembly LH (key cylinder switch) signal.

Power window lock signal.

Retained power operation signal.

Rear power window operation.

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POWER WINDOW LOCK
The power window lock is designed to lock operation of all windows except for front door window LH.
When in the lock position, the power window lock signal is transmitted to power window and door lock/unlock
switch RH by power window serial link. This prevents the power window motor from operating.
RETAINED POWER OPERATION
When the ignition switch is turned to the OFF position from ON or START position, power is supplied for 45
seconds

to main power window and door lock/unlock switch terminal 10

from BCM terminal 68.
When power and ground are supplied, the BCM continues to be energized, and the power window can be
operated.
The retained power operation is canceled when the front LH or front RH door is opened.
Retained power operation period can be changed by CONSULT-II. Refer to GW-33, "
CONSULT-II Function
(BCM)" .
ANTI-PINCH SYSTEM
Main power window and door lock/unlock switch, power window and door lock/unlock switch RH and rear
power window control unit LH and RH monitors the power window motor operation and the power window
position (full closed or other) for each power window by the signals from encoder and limit switch in power win-
dow motor.
When a window switch detects interruption during the following close operation,

automatic close operation when ignition switch is in the ON position

automatic close operation during retained power operation
Main power window and door lock/unlock switch, power window and door lock/unlock switch RH and rear
power window control unit LH and RH controls each power window motor for open and the power window will
be lowered about 150 mm (5.91 in).
POWER WINDOW CONTROL BY THE FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER
SWITCH)
When ignition key switch is OFF, front power window LH and RH can be opened or closed by turning the front
door lock assembly LH (key cylinder switch) to the UNLOCK/LOCK position for more than 1 second.

Front power windows can be opened as the front door lock assembly LH (key cylinder switch) is kept fully
turned to the UNLOCK position.

Front power windows can be closed as the front door lock assembly LH (key cylinder switch) is kept fully
turned to the LOCK position.

While performing open/close operation for the windows, power window is stopped when the front door
lock assembly LH (key cylinder switch) is placed in the NEUTRAL position.

When the ignition switch is turned ON while the power window opening operation is performed, the power
window opening stops.
CAN Communication System DescriptionEIS005XP
Refer to LAN-26, "CAN COMMUNICATION" .

GW-30
POWER WINDOW SYSTEM
Revision: November 20092006 QX56
Terminal and Reference Value for Main Power Window and Door Lock/Unlock
Switch
EIS005XS
Terminal and Reference Value for Power Window and Door Lock/Unlock Switch
RH
EIS005XT
Terminal Wire ColorItemCondition Voltage (V)
(Approx.)
2 W/B Limit switch and encoder ground — 0
4L Front door key cylinder switch LH
lock signal Key position
(Neutral
→ Unlocked) 5
→ 0
6R Front door key cylinder LH switch
unlock signal Key position
(Neutral
→ Locked) 5
→ 0
8G/R Front power window motor LH UP
signal When power window motor is
operated UP
Battery voltage
9 O Limit switch signal Front power window LH is
between fully-open and just
before fully-closed position (ON)
0
Front power window LH is
between just before fully-closed
position and fully-closed position
(OFF) 5
10 W/L RAP signal When ignition switch ON
Battery voltage
Within 45 seconds after ignition
switch is turned to OFF Battery voltage
More than 45 seconds after igni-
tion switch is turned to OFF 0
When front door LH or RH open
or power window timer operates 0
11 G/W Front power window motor LH
DOWN signal When power window motor is
operated DOWN
Battery voltage
13 G/Y Encoder pulse signal When power window motor oper-
ates
14 LG/W Power window serial link When ignition switch ON or
power window timer operates
15 BR Encoder power supply When ignition switch ON or
power window timer operates10
17 B Ground —0
19 W/R Battery power supply —Battery voltage
OCC3383D
PIIA2344J
Terminal Wire Color ItemCondition Voltage (V)
(Approx.)
3 W/B Limit switch and encoder ground — 0
4 G/R Encoder power supply When ignition switch ON or
power window timer operates10

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Trouble Diagnoses Symptom ChartEIS005XX

Check that other systems using the signal of the following systems operate normally.
DOOR SW-DRIndicates (ON/OFF) condition of front door switch driver side
DOOR SW-AS Indicates (ON/OFF) condition of front door switch passenger side
Symptom Repair orderRefer to page
None of the power windows can be operated using any switch 1. BCM power supply and ground circuit check
GW-37
2. Main power window and door lock/unlock
power supply and ground circuit checkGW-38
3. Power window serial link check front LH and
RHGW-39
Front power window LH alone does not operate 1. Main power window and door lock/unlock
power supply and ground circuit check
GW-382. Front power window motor LH circuit check
GW-40
3. Replace main power window and door lock/
unlock switch EI-32
Front power window RH alone does not operate 1. Power window and door lock/unlock switch
RH power supply and ground circuit check
GW-392. Power window serial link check front LH and
RHGW-51
3. Front power window motor RH circuit check
GW-41
4. Replace BCMBCS-20
Rear power window LH alone does not operate 1. Rear power window control unit LH or RH
power supply and ground circuit check
GW-53
2. Rear power window switch LH or RH power
supply and ground circuit checkGW-54
3. Rear power window motor LH circuit check
GW-54
4. Power window serial link check rear LH and
RHGW-59
5. Replace BCM
BCS-20
Rear power window RH alone does not operate 1. Rear power window control unit LH or RH
power supply and ground circuit check
GW-53
2. Rear power window switch LH or RH power
supply and ground circuit checkGW-54
3. Rear power window motor RH circuit check
GW-55
4. Power window serial link check rear LH and
RHGW-59
5. Replace BCM
BCS-20
Rear power vent windows do not operate 1. Rear power vent window switch circuit checkGW-61
Rear power vent window LH alone does not operate 1. Rear power vent window motor LH circuit
checkGW-61
Rear power vent window RH alone does not operate
1. Rear power vent window motor RH circuit
checkGW-61
Rear power vent windows do not open 1. Rear power vent window relay (OPEN)
check
GW-61
Rear power vent windows do not close 1. Rear power vent window relay (CLOSE)
checkGW-61

GW-36
POWER WINDOW SYSTEM
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Anti-pinch system does not operate normally (Front LH)1. Door window sliding part malfunction

A foreign material adheres to window glass
or glass run rubber.

Glass run rubber wear or deformation.

Sash is tilted too much, or not enough.
—
2. Limit switch adjusting GW-66
3. Limit switch circuit check front LHGW-41
4. Encoder circuit check front LHGW-44
Anti-pinch system does not operate normally (Front RH) 1. Door window sliding part malfunction

A foreign material adheres to window glass
or glass run rubber.

Glass run rubber wear or deformation.

Sash is tilted too much, or not enough.
—
2. Limit switch adjusting GW-66
3. Limit switch circuit check front RHGW-43
4. Encoder circuit check front RHGW-46
Anti-pinch system does not operate normally (Rear LH) 1. Door window sliding part malfunction

A foreign material adheres to window glass
or glass run rubber.

Glass run rubber wear or deformation.

Sash is tilted too much, or not enough.
—
2. Limit switch adjusting GW-66
3. Limit switch circuit check rear LH or RHGW-56
4. Encoder circuit check rear LH or RHGW-58
Anti-pinch system does not operate normally (Rear RH) 1. Door window sliding part malfunction

A foreign material adheres to window glass
or glass run rubber.

Glass run rubber wear or deformation.

Sash is tilted too much, or not enough.
—
2. Limit switch adjusting GW-66
3. Limit switch circuit check rear LH or RHGW-56
4. Encoder circuit check rear LH or RHGW-58
Power window retained power operation does not operate properly 1. Check the retained power operation mode
setting.
GW-342. Door switch check
GW-48
3. Replace BCM.BCS-20
Power windows do not operate by front door lock assembly LH
(key cylinder switch) 1. Front door lock assembly LH (key cylinder
switch) check
GW-49
2. Replace main power window and door lock/
unlock switch
EI-32
Power window lock switch does not function
1. Power window lock switch circuit checkGW-51
Symptom Repair orderRefer to page

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BCM Power Supply and Ground Circuit CheckEIS005XY
1. CHECK FUSE AND FUSIBLE LINK

Check 10A fuse (No. 4, located in the fuse block (J/B)]

Check 10A fuse (No. 59, located in the fuse and relay box)

Check 50A fusible link (letter f , located in the fuse and fusible link box)
NOTE:
Refer to GW-15, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
3, "PRECAUTIONS" .
2. CHECK BCM POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace the 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.
Connector Terminals
Power
source Condition Voltage (V)
(Approx.)
(+) (-)
M20 70 Ground Battery
power
supply Ignition
switch
OFF Battery voltage
M18 38 Ground
Ignition
power
supply Ignition
switch
ON or
START Battery voltage
11 Ground ACC
power
supply Ignition
switch
ACC or ON Battery voltage
LIIA0995E
67 - Ground
: Continuity should exist.
LIIA0915E