2007 INFINITI QX56 relay

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< SERVICE INFORMATION >
HOW TO USE THIS MANUAL
Optional Splice
DESCRIPTION
SGI942
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berItem Description
1 Power condition • This shows the condition when the system receives battery positive voltage (can be operated).
2 Fusible link• The double line shows that this is a fusible link.
• The open circle shows current flow in, and the shaded circle shows current flow out.
3Fusible link/fuse loca-
tion• This shows the location of the fusible link or fuse in the fusible link or fuse box. For arrange-
ment, refer to PG section, POWER SUPPLY ROUTING.
4Fuse• The single line shows that this is a fuse.
• The open circle shows current flow in, and the shaded circle shows current flow out.
5 Current rating • This shows the current rating of the fusible link or fuse.
6 Connectors• This shows that connector E3 is female and connector M1 is male.
• The G/R wire is located in the 1A terminal of both connectors.
• Terminal number with an alphabet (1A, 5B, etc.) indicates that the connector is SMJ connector.
Refer to PG section, SMJ (SUPER MULTIPLE JUNCTION).
7 Optional splice • The open circle shows that the splice is optional depending on vehicle application.
8 Splice • The shaded circle shows that the splice is always on the vehicle.
9 Page crossing• This arrow shows that the circuit continues to an adjacent page.
• The A will match with the A on the preceding or next page.
10 Common connector • The dotted lines between terminals show that these terminals are part of the same connector.
11 Option abbreviation • This shows that the circuit is optional depending on vehicle application.
12 Relay• This shows an internal representation of the relay. For details, refer to PG section, STAN-
DARDIZED RELAY.
13 Connectors • This shows that the connector is connected to the body or a terminal with bolt or nut.

GI-26
< SERVICE INFORMATION >
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
• Cold or hot start up
Get a thorough description of the incident from the customer. It is important for simulating the conditions of the
problem.
Vehicle Vibration
The problem may occur or become worse while driving on a rough road or when engine is vibrating (idle with
A/C on). In such a case, you will want to check for a vibration related condition. Refer to the following illustra-
tion.
CONNECTORS & HARNESS
Determine which connectors and wiring harness would affect the electrical system you are inspecting. Gently
shake each connector and harness while monitoring the system for the incident you are trying to duplicate.
This test may indicate a loose or poor electrical connection.
HINT
Connectors can be exposed to moisture. It is possible to get a thin film of corrosion on the connector termi-
nals. A visual inspection may not reveal this without disconnecting the connector. If the problem occurs inter-
mittently, perhaps the problem is caused by corrosion. It is a good idea to disconnect, inspect and clean the
terminals on related connectors in the system.
SENSORS & RELAYS
Gently apply a slight vibration to sensors and relays in the system you are inspecting.
This test may indicate a loose or poorly mounted sensor or relay.
ENGINE COMPARTMENT
There are several reasons a vehicle or engine vibration could cause an electrical complaint. Some of the
things to check for are:
• Connectors not fully seated.
• Wiring harness not long enough and is being stressed due to engine vibrations or rocking.
• Wires laying across brackets or moving components.
• Loose, dirty or corroded ground wires.
• Wires routed too close to hot components.
To inspect components under the hood, start by verifying the integrity of ground connections. (Refer to Ground
Inspection described later.) First check that the system is properly grounded. Then check for loose connection
by gently shaking the wiring or components as previously explained. Using the wiring diagrams inspect the
wiring for continuity.
BEHIND THE INSTRUMENT PANEL
An improperly routed or improperly clamped harness can become pinched during accessory installation. Vehi-
cle vibration can aggravate a harness which is routed along a bracket or near a screw.
UNDER SEATING AREAS
An unclamped or loose harness can cause wiring to be pinched by seat components (such as slide guides)
during vehicle vibration. If the wiring runs under seating areas, inspect wire routing for possible damage or
pinching.
Heat Sensitive
SGI839

GI-28
< SERVICE INFORMATION >
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
ough understanding of system operation. Then you will be able to use the appropriate equipment and follow
the correct test procedure.
You may have to simulate vehicle vibrations while testing electrical components. Gently shake the wiring har-
ness or electrical component to do this.
NOTE:
Refer to “How to Check Terminal” to probe or check terminal.
Testing for “Opens” in the Circuit
Before you begin to diagnose and test the system, you should rough sketch a schematic of the system. This
will help you to logically walk through the diagnosis process. Drawing the sketch will also reinforce your work-
ing knowledge of the system.
CONTINUITY CHECK METHOD
The continuity check is used to find an open in the circuit. The digital multimeter (DMM) set on the resistance
function will indicate an open circuit as over limit (no beep tone or no ohms symbol). Make sure to always start
with the DMM at the highest resistance level.
To help in understanding the diagnosis of open circuits, please refer to the previous schematic.
• Disconnect the battery negative cable.
• Start at one end of the circuit and work your way to the other end. (At the fuse block in this example)
• Connect one probe of the DMM to the fuse block terminal on the load side.
• Connect the other probe to the fuse block (power) side of SW1. Little or no resistance will indicate that por-
tion of the circuit has good continuity. If there were an open in the circuit, the DMM would indicate an over
limit or infinite resistance condition. (point A)
• Connect the probes between SW1 and the relay. Little or no resistance will indicate that portion of the circuit
has good continuity. If there were an open in the circuit, the DMM would indicate an over limit or infinite resis-
tance condition. (point B)
• Connect the probes between the relay and the solenoid. Little or no resistance will indicate that portion of the
circuit has good continuity. If there were an open in the circuit, the DMM would indicate an over limit or infi-
nite resistance condition. (point C)
Any circuit can be diagnosed using the approach in the previous example.
VOLTAGE CHECK METHOD
To help in understanding the diagnosis of open circuits please refer to the previous schematic.
In any powered circuit, an open can be found by methodically checking the system for the presence of voltage.
This is done by switching the DMM to the voltage function.
• Connect one probe of the DMM to a known good ground.
• Begin probing at one end of the circuit and work your way to the other end.
• With SW1 open, probe at SW1 to check for voltage.
voltage; open is further down the circuit than SW1.
no voltage; open is between fuse block and SW1 (point A).
• Close SW1 and probe at relay.
voltage; open is further down the circuit than the relay.
no voltage; open is between SW1 and relay (point B).
OPEN A circuit is open when there is no continuity through a section of the circuit.
SHORTThere are two types of shorts.
• SHORT CIRCUITWhen a circuit contacts another circuit and causes the normal resistance to
change.
• SHORT TO GROUND When a circuit contacts a ground source and grounds the circuit.
SGI846-A

SERVICE INFORMATION FOR ELECTRICAL INCIDENT
GI-29
< SERVICE INFORMATION >
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• Close the relay and probe at the solenoid.
voltage; open is further down the circuit than the solenoid.
no voltage; open is between relay and solenoid (point C).
Any powered circuit can be diagnosed using the approach in the previous example.
Testing for “Shorts” in the Circuit
To simplify the discussion of shorts in the system, please refer to the following schematic.
RESISTANCE CHECK METHOD
• Disconnect the battery negative cable and remove the blown fuse.
• Disconnect all loads (SW1 open, relay disconnected and solenoid disconnected) powered through the fuse.
• Connect one probe of the DMM to the load side of the fuse terminal. Connect the other probe to a known
good ground.
• With SW1 open, check for continuity.
continuity; short is between fuse terminal and SW1 (point A).
no continuity; short is further down the circuit than SW1.
• Close SW1 and disconnect the relay. Put probes at the load side of fuse terminal and a known good ground.
Then, check for continuity.
continuity; short is between SW1 and the relay (point B).
no continuity; short is further down the circuit than the relay.
• Close SW1 and jump the relay contacts with jumper wire. Put probes at the load side of fuse terminal and a
known good ground. Then, check for continuity.
continuity; short is between relay and solenoid (point C).
no continuity; check solenoid, retrace steps.
VOLTAGE CHECK METHOD
• Remove the blown fuse and disconnect all loads (i.e. SW1 open, relay disconnected and solenoid discon-
nected) powered through the fuse.
• Turn the ignition key to the ON or START position. Verify battery voltage at the battery + side of the fuse ter-
minal (one lead on the battery + terminal side of the fuse block and one lead on a known good ground).
• With SW1 open and the DMM leads across both fuse terminals, check for voltage.
voltage; short is between fuse block and SW1 (point A).
no voltage; short is further down the circuit than SW1.
• With SW1 closed, relay and solenoid disconnected and the DMM leads across both fuse terminals, check for
voltage.
voltage; short is between SW1 and the relay (point B).
no voltage; short is further down the circuit than the relay.
• With SW1 closed, relay contacts jumped with fused jumper wire check for voltage.
voltage; short is down the circuit of the relay or between the relay and the disconnected solenoid (point C).
no voltage; retrace steps and check power to fuse block.
Ground Inspection
Ground connections are very important to the proper operation of electrical and electronic circuits. Ground
connections are often exposed to moisture, dirt and other corrosive elements. The corrosion (rust) can
become an unwanted resistance. This unwanted resistance can change the way a circuit works.
Electronically controlled circuits are very sensitive to proper grounding. A loose or corroded ground can drasti-
cally affect an electronically controlled circuit. A poor or corroded ground can easily affect the circuit. Even
when the ground connection looks clean, there can be a thin film of rust on the surface.
When inspecting a ground connection follow these rules:
• Remove the ground bolt or screw.
• Inspect all mating surfaces for tarnish, dirt, rust, etc.
SGI847-A

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CONTENTS
GLASSES, WINDOW SYSTEM & MIRRORS
SERVICE INFORMATION ............................3
PRECAUTIONS ...................................................3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
3
Handling for Adhesive and Primer ............................3
PREPARATION ...................................................4
Special Service Tool .................................................4
Commercial Service Tool ..........................................4
SQUEAK AND RATTLE TROUBLE DIAGNO-
SIS .......................................................................
5
Work Flow .................................................................5
Generic Squeak and Rattle Troubleshooting ............7
Diagnostic Worksheet ...............................................9
WINDSHIELD GLASS ........................................11
Removal and Installation .........................................11
REAR WINDOW GLASS AND MOLDING .........13
Removal and Installation .........................................13
POWER WINDOW SYSTEM ..............................15
Component Parts and Harness Connector Loca-
tion ..........................................................................
15
System Description .................................................15
CAN Communication System Description ...............18
Schematic ...............................................................19
Wiring Diagram - WINDOW- ...................................21
Main Power Window and Door Lock/Unlock
Switch Harness Connector Terminal Layout ...........
28
Terminal and Reference Value for Main Power
Window and Door Lock/Unlock Switch ...................
29
Power Window and Door Lock/Unlock Switch RH
Harness Connector Terminal Layout ......................
30
Terminal and Reference Value for Power Window
and Door Lock/Unlock Switch RH ...........................
30
Terminal and Reference Value for BCM .................31
Work Flow ...............................................................31
CONSULT-II Function (BCM) ..................................31
Trouble Diagnosis Symptom Chart ..........................32
BCM Power Supply and Ground Circuit Inspection
....
34
Main Power Window and Door Lock/Unlock
Switch Power Supply and Ground Circuit Inspec-
tion ...........................................................................
34
Power Window and Door Lock/Unlock Switch RH
Power Supply and Ground Circuit Inspection ..........
35
Front Power Window Motor LH Circuit Inspection ....36
Front Power Window Motor RH Circuit Inspection ....37
Limit Switch Circuit Inspection Front LH ..................37
Limit Switch Circuit Inspection Front RH .................38
Encoder Circuit Inspection Front LH ........................40
Encoder Circuit Inspection Front RH .......................41
Door Switch Check ..................................................43
Front Door Lock Assembly LH (Key Cylinder
Switch) Check ..........................................................
44
Power Window Serial Link Check Front LH and
RH ...........................................................................
46
Rear Power Window Control Unit LH or RH Power
Supply and Ground Circuit Inspection .....................
48
Rear Power Window Switch LH or RH Power Sup-
ply and Ground Circuit Inspection ...........................
49
Rear Power Window Motor LH Circuit Inspection ....50
Rear Power Window Motor RH Circuit Inspection ....50
Limit Switch Circuit Inspection Rear LH and RH .....51
Encoder Circuit Inspection Rear LH or RH ..............53
Power Window Serial Link Check Rear LH or RH ....54
Rear Power Vent Window Switch Circuit Inspec-
tion ...........................................................................
55
Rear Power Vent Window Motor LH Circuit In-
spection ...................................................................
55
Rear Power Vent Window Motor RH Circuit In-
spection ...................................................................
56
Rear Power Vent Window Relay (OPEN) Check ....56
Rear Power Vent Window Relay (CLOSE) Check ....57
FRONT DOOR GLASS AND REGULATOR .....59
Removal and Installation .........................................59
REAR DOOR GLASS AND REGULATOR .......62

POWER WINDOW SYSTEM
GW-15
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POWER WINDOW SYSTEM
Component Parts and Harness Connector LocationINFOID:0000000003533024
System DescriptionINFOID:0000000003533025
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
1. A. Steering column
B. BCM M18, M19, M20 (view with
instrument panel removed)2. 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) D143. A. Rear power window switch LH
D203, RH D303
B. Rear power window motor LH
D204, RH D304
4. A. Rear power vent window relay
(CLOSE) M89
B. Rear power vent window relay
(OPEN) M875. Rear power vent window switch
R1036. A. Rear power vent window motor
LH B52, RH B150
B. Condenser-3 B119
Condenser-4 B120
LIIA2715E

POWER WINDOW SYSTEM
GW-17
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• 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
• 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.

POWER WINDOW SYSTEM
GW-33
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Rear power window RH alone does not operate1. Rear power window control unit LH or RH
power supply and ground circuit checkGW-48
2. Rear power window switch LH or RH power
supply and ground circuit checkGW-49
3. Rear power window motor RH circuit checkGW-50
4. Power window serial link check rear LH and
RHGW-54
5. Replace BCMBCS-24
Rear power vent windows do not operate 1. Rear power vent window switch circuit checkGW-55
Rear power vent window LH alone does not operate1. Rear power vent window motor LH circuit
checkGW-55
Rear power vent window RH alone does not operate1. Rear power vent window motor RH circuit
checkGW-56
Rear power vent windows do not open 1. Rear power vent window relay (OPEN) checkGW-56
Rear power vent windows do not close1. Rear power vent window relay (CLOSE)
checkGW-57
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 adjustingGW-59
3. Limit switch circuit check front LHGW-37
4. Encoder circuit check front LHGW-40
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 adjustingGW-59
3. Limit switch circuit check front RHGW-38
4. Encoder circuit check front RHGW-41
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 adjustingGW-62
3. Limit switch circuit check rear LH or RHGW-51
4. Encoder circuit check rear LH or RHGW-53
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 adjustingGW-62
3. Limit switch circuit check rear LH or RHGW-51
4. Encoder circuit check rear LH or RHGW-53
Power window retained power operation does not operate properly1. Check the retained power operation mode
setting.GW-312. Door switch checkGW-43
3. Replace BCM.BCS-24
Symptom Repair order Refer to page