2007 INFINITI QX56 headlamp

FRONT FOG LAMP
LT-55
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Aiming AdjustmentINFOID:0000000003533400
The fog lamp is a semi-sealed beam type which uses a replaceable halogen bulb. Before performing aiming
adjustment, make sure of the following.
• Keep all tires inflated to correct pressure.
• Place vehicle on level ground.
• See that vehicle is unloaded (except for full levels of coolant,
engine oil and fuel, and spare tire, jack, and tools). Have the driver
or equivalent weight placed in driver seat.
Adjust aiming in the vertical direction by turning the adjustment
screw.
NOTE:
Access adjustment screw from underneath front bumper. Turn screw
clockwise to raise pattern and counterclockwise to lower pattern.
1. Set the distance between the screen and the center of the fog
lamp lens as shown.
2. Turn front fog lamps ON.
3. Adjust front fog lamps using adjusting screw so that the top edge
of the high intensity zone is 200 mm (7.9 in) below the height of
the fog lamp centers as shown.
• When performing adjustment, if necessary, cover the headlamps
and opposite fog lamp.
Bulb ReplacementINFOID:0000000003533401
FRONT FOG LAMP
Removal
1. Remove the front turn/fog lamp assembly. Refer to LT- 4 9.
SEL350X
MEL327G
MEL328GA

LT-56
< SERVICE INFORMATION >
FRONT FOG LAMP
2. Turn the bulb cover counterclockwise to remove it.
3. Unlatch retaining spring.
4. Remove bulb and disconnect the connector.
CAUTION:
• Do not touch the glass of bulb directly by hand. Keep
grease and other oily substances away from it. Do not
touch bulb by hand while it is lit or right after being turned
off. Burning may result.
• Do not leave bulb out of fog lamp reflector for a long time
because dust, moisture smoke, etc. may affect the perfor-
mance of fog lamp. When replacing bulb, be sure to
replace it with new one.
Installation
Installation is in the reverse order of removal.
Removal and InstallationINFOID:0000000003533402
FRONT FOG LAMP
The fog lamp is a semi-sealed beam type which uses a replaceable halogen bulb.
CAUTION:
• Do not leave fog lamp assembly without bulb for a long period of time. Dust, moisture, smoke, etc.
entering the fog lamp body may affect the performance. Remove the bulb from the headlamp assem-
bly just before replacement bulb is installed.
• Grasp only the plastic base when handling the bulb. Never touch the glass envelope. Touching the
glass could significantly affect the bulb life and/or fog lamp performance.
Removal
1. Remove the front turn/fog lamp finisher.
2. Remove bolt and pull fog lamp out of front fascia.
3. Disconnect electrical connector.
Installation
Installation is in the reverse order of removal.
WKIA1886E
WKIA1887E
WKIA1888E

COMBINATION SWITCH
LT-73
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CONSULT-II Function (BCM)INFOID:0000000003533423
Refer to BCS-16, "CONSULT-II Function (BCM)" .
CONSULT-II START PROCEDURE
Refer to GI-36, "CONSULT-II Start Procedure" .
DATA MONITOR
Display Item List
Combination Switch InspectionINFOID:0000000003533424
1.SYSTEM CHECK
1. Referring to table below, check which system the malfunctioning switch belongs.
>> GO TO 2.
2.SYSTEM CHECK
With CONSULT-II
CAUTION:
Monitor item name
"OPERATION OR UNIT"Contents
TURN SIGNAL R "ON/OFF" Displays "Turn Right (ON)/Other (OFF)" status, determined from lighting switch signal.
TURN SIGNAL L "ON/OFF" Displays "Turn Left (ON)/Other (OFF)" status, determined from lighting switch signal.
HI BEAM SW "ON/OFF"Displays status (high beam switch: ON/Others: OFF) of high beam switch judged from lighting switch
signal.
HEAD LAMP SW 1 "ON/OFF" Displays "Headlamp switch 1 (ON)/Other (OFF)" status, determined from lighting switch signal.
HEAD LAMP SW 2 "ON/OFF"Displays status (headlamp switch 2: ON/Others: OFF) of headlamp switch 2 judged from lighting
switch signal.
LIGHT SW 1ST "ON/OFF"Displays status (lighting switch 1st position: ON/Others: OFF) of lighting switch judged from lighting
switch signal.
PASSING SW "ON/OFF"Displays status (flash-to-pass switch: ON/Others: OFF) of flash-to-pass switch judged from lighting
switch signal.
AUTO LIGHT SW "ON/OFF" Displays "Auto light switch (ON)/Other (OFF)" status, determined from lighting switch signal.
FR FOG SW "ON/OFF" Displays "Front fog lamp switch (ON)/Other (OFF)" status, determined from lighting switch signal.
FR WIPER HI "ON/OFF" Displays "Front Wiper HI (ON)/Other (OFF)" status, determined from wiper switch signal.
FR WIPER LOW "ON/OFF" Displays "Front Wiper LOW (ON)/Other (OFF)" status, determined from wiper switch signal.
FR WIPER INT "ON/OFF" Displays "Front Wiper INT (ON)/Other (OFF)" status, determined from wiper switch signal.
FR WASHER SW "ON/OFF" Displays "Front Washer Switch (ON)/Other (OFF)" status, determined from wiper switch signal.
INT VOLUME [1 - 7] Displays intermittent operation knob setting (1 - 7), determined from wiper switch signal.
RR WIPER ON "ON/OFF" Displays "Rear Wiper (ON)/(OFF)" status, determined from wiper switch signal.
RR WIPER INT "ON/OFF" Displays "Rear Wiper INT (ON)/(OFF)" status, determined from wiper switch signal.
RR WASHER SW "ON/OFF" Displays "Rear Washer (ON)/(OFF)" status, determined from wiper switch signal.
System 1 System 2 System 3 System 4 System 5
— FR WASHER FR WIPER LO TURN LH TURN RH
FR WIPER HI — FR WIPER INT PASSING HEAD LAMP1
INT VOLUME 1 RR WASHER — HEAD LAMP2 HI BEAM
RR WIPER INT INT VOLUME 3 AUTO LIGHT — TAIL LAMP
INT VOLUME 2 RR WIPER ON — FR FOG —

TRAILER TOW
LT-95
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• to trailer tow relay 1 terminal 3,
• through 20A fuse (No. 53, located in the IPDM E/R)
• to CPU (central processing unit) of the IPDM E/R,
• through 30A fusible link (letter j , located in the fuse and fusible link box)
• to trailer tow relay 2 terminals 3 and 6, and
• through 40A fusible link (letter k , located in the fuse and fusible link box)
• to electric brake (pre-wiring) terminal 5.
With the ignition switch in the ON or START position, power is supplied
• to ignition relay, located in the IPDM E/R,
• through 10A fuse (No. 59, located in the fuse and relay box)
• to BCM terminal 38, and
• through 10A fuse (No. 51, located in the IPDM E/R)
• to trailer tow relay 2 terminal 1.
Ground is supplied
• to BCM terminal 67
• to electric brake (pre-wiring) terminal 1,
• through grounds M57, M61 and M79,
• to IPDM E/R terminals 38 and 59
• to trailer tow relay 1 terminal 2
• to trailer tow relay 2 terminal 2, and
• to trailer connector terminal 2
• to trailer turn relay LH and RH terminal 2
• through grounds E9, E15 and E24.
TRAILER TAIL LAMP OPERATION
The trailer tail lamps are controlled by the trailer tow relay 1.
With the lighting switch in the parking and tail lamp ON (1ST) position, AUTO position (and the auto light sys-
tem is activated) or headlamp ON (2ND) position, power is supplied
• through the tail lamp relay, located in the IPDM E/R
• through 10A fuse (No. 36, located in the IPDM E/R)
• through IPDM E/R terminal 49
• to trailer tow relay 1 terminal 1.
When energized, trailer tow relay 1 supplies tail lamp power to trailer connector terminal 6.
TRAILER TURN SIGNAL AND HAZARD LAMP OPERATION
The trailer turn signal and hazard lamps are controlled by the BCM through trailer turn relays (LH and RH). If
either turn signal or the hazard lamps are turned on, the BCM supplies voltage to the trailer turn relays (LH
and RH) to make them cycle on and off.
Trailer turn relay LH output is supplied
• through BCM terminal 52
• to trailer turn relay LH terminal 1.
Trailer turn relay RH output is supplied
• through BCM terminal 51
• to trailer turn relay RH terminal 1.
Left turn signal and hazard lamp output is supplied
• through trailer turn relay LH terminal 3
• to trailer connector terminal 1.
Right turn signal and hazard lamp output is supplied
• through trailer turn relay RH terminal 3
• to trailer connector terminal 4.
TRAILER STOP LAMP OPERATION
The trailer stop lamps are controlled by the electric brake. The electric brake receives stop lamp switch signal
when the brake pedal is pressed.
When the brake pedal is pressed, power is supplied
• through electric brake (pre-wiring) terminal 3
• to trailer connector terminal 3.
TRAILER POWER SUPPLY OPERATION
The trailer power supply is controlled by the trailer tow relay 2.
When the ignition switch is in the ON or START position, power is supplied
• through 10A fuse (No. 51, located in the IPDM E/R)

ILLUMINATION
LT-121
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• to BCM terminal 38, and
• through 10A fuse [No. 14, located in the fuse block (J/B)]
• to combination meter terminal 24.
Ground is supplied
• to BCM terminal 67
• to combination meter terminal 17
• through grounds M57, M61 and M79, and
• to IPDM E/R terminals 38 and 59
• through grounds E9, E15 and E24.
ILLUMINATION OPERATION BY LIGHTING SWITCH
With the lighting switch in the 1ST or 2ND position (or if the auto light system is activated), the BCM receives
input signal requesting the illumination lamps to illuminate. This input signal is communicated to the IPDM E/R
across the CAN communication lines. The CPU of the IPDM E/R controls the tail lamp relay coil, which, when
energized, directs power
• through 10A fuse (No. 36, located in the IPDM E/R)
• through IPDM E/R terminal 49
• to illumination control switch terminal 1
• to power liftgate switch terminal 3
• to front room/map lamp assembly (console box illumination) terminal 7
• to hazard switch terminal 3
• to rear sonar system OFF switch terminal 3
• to glove box lamp terminal 1
• to door mirror remote control switch terminal 16
• to display control unit terminal 14
• to power window and door lock/unlock switch RH terminal 5 (early production)
• to main power window and door lock/unlock switch LH terminal 16 (early production)
• to 4WD shift switch terminal 7 (with 4-wheel drive)
• to front air control terminal 23
• to rear power vent window switch terminal 5
• to DVD player terminal 12 (with DVD entertainment system)
• to NAVI control unit terminal 61
• to pedal adjusting switch terminal 5
• to electric brake (pre-wiring) terminal 4 (with trailer tow)
• to front and rear heated seat switch LH and RH terminal 5
• to A/T device terminal 11
• to VDC OFF switch terminal 3
• to tow mode switch terminal 3
• to headlamp aiming switch terminal 3
• to clock terminal 3, and
• through 10A fuse (No. 37, located in the IPDM E/R)
• through IPDM E/R terminal 57
• to AV switch terminal 3
• to audio unit terminal 8
• to rear air control terminal 1 and
• to rear audio remote control unit terminal 6.
The illumination control switch controls illumination intensity by varying the ground to the following
• through illumination control switch terminal 2
• to power liftgate switch terminal 4
• to front room/map lamp assembly (console box illumination) terminal 8
• to AV switch terminal 4
• to hazard switch terminal 4
• to audio unit terminal 7
• to rear sonar system OFF switch terminal 4
• to power window and door lock/unlock switch RH terminal 1 (early production)
• to main power window and door lock/unlock switch LH terminal 12 (early production)
• to 4WD switch terminal 8 (with 4-wheel drive)
• to front air control terminal 24
• to rear power vent window switch terminal 6
• to DVD player terminal 10 (with DVD entertainment system)
• to pedal adjusting switch terminal 6
• to A/T device terminal 12

LT-122
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ILLUMINATION
• to front heated seat switch LH and RH terminal 6
• to VDC OFF switch terminal 4
• to tow mode switch terminal 4
• to headlamp aiming switch terminal 4
• to clock terminal 4 and
• to combination meter terminal 18.
Ground is supplied
• to illumination control switch terminal 3
• to glove box lamp terminal 2
• to door mirror remote control switch terminal 15
• to display control unit terminal 3
• to rear heated seat switches terminal 6
• to electric brake (pre-wiring) terminal 1 (with trailer tow)
• to combination meter terminal 17
• through grounds M57, M61 and M79, and
• to NAVI control unit terminal 1
• to rear air control terminal 3
• to rear audio remote control unit terminal 15
• through grounds B117 and B132.
With power and ground supplied, illumination lamps illuminate.
EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 1ST or 2ND position (or if auto light system is acti-
vated), and the ignition switch is turned from ON or ACC to OFF, the battery saver control function is activated.
Under this condition, the illumination lamps remain illuminated for 5 minutes, then the illumination lamps are
turned off.
When the lighting switch is turned from OFF to 1ST or 2ND position (or if auto light system is activated) after
illumination lamps are turned off by the battery saver control, the illumination lamps illuminate again.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
CAN Communication System DescriptionINFOID:0000000003533470
Refer to LAN-4, "CAN Communication System" .

LT-138
< SERVICE INFORMATION >
BULB SPECIFICATIONS
BULB SPECIFICATIONS
HeadlampINFOID:0000000003533474
*: Always check with the Parts Department for the latest parts information.
Exterior LampINFOID:0000000003533475
*: Always check with the Parts Department for the latest parts information.
Interior Lamp/IlluminationINFOID:0000000003533476
*: Always check with the Parts Department for the latest parts information.Item Wattage (W)*
Low35 (D2R)
High60 (HB3)
Item Wattage (W)*
Front combination lampParking lamp (inner) 7
Parking lamp (outer) 7
Side marker lamp (front) 7
Rear combination lampStop/Tail lamp *
Side marker lamp (rear) *
Turn signal lamp 27
Back-up lamp*
Turn/fog lampFog 55 (H3)
Turn 21
License plate lamp5
High-mounted stop lamp*
Item Wattage (W)*
Glove box lamp3.4
Room/Map lamp8
Console box illumination lamp*
A/T device lamp2
Foot lamp3.4
Ste p lam p3.8
Cargo lamp7
Vanity lamp1.32
Personal lamp5
Puddle lamp8
Ignition keyhole illumination lamp0.74

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PG-17
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IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)
System DescriptionINFOID:0000000003533835
• IPDM E/R (Intelligent Power Distribution Module Engine Room) integrates the relay box and fuse block
which were originally placed in engine compartment. It controls integrated relays via IPDM E/R control cir-
cuits.
• IPDM E/R-integrated control circuits perform ON-OFF operation of relays, CAN communication control, etc.
• It controls operation of each electrical component via ECM, BCM and CAN communication lines.
CAUTION:
None of the IPDM E/R integrated relays can be removed.
SYSTEMS CONTROLLED BY IPDM E/R
1. Lamp control
Using CAN communication lines, it receives signals from the BCM and controls the following lamps:
• Headlamps (Hi, Lo)
• Parking lamps
• Tail and license lamps
• Front fog lamps
2. Wiper control
Using CAN communication lines, it receives signals from the BCM and controls the front wipers.
3. Rear window defogger relay control
Using CAN communication lines, it receives signals from the BCM and controls the rear window defogger
relay.
4. A/C compressor control
Using CAN communication lines, it receives signals from the ECM and controls the A/C compressor
(magnetic clutch).
5. Starter control
Using CAN communication lines, it receives signals from the BCM and controls the starter relay.
6. Cooling fan control
Using CAN communication lines, it receives signals from the ECM and controls the cooling fan relays.
7. Horn control
Using CAN communication lines, it receives signals from the BCM and controls the horn relay.
CAN COMMUNICATION LINE CONTROL
With CAN communication, by connecting each control unit using two communication lines (CAN L-line, CAN
H-line), it is possible to transmit a maximum amount of information with minimum wiring. Each control unit can
transmit and receive data, and reads necessary information only.
1. Fail-safe control
• When CAN communication with other control units is impossible, IPDM E/R performs fail-safe control.
After CAN communication returns to normal operation, it also returns to normal control.
• Operation of control parts by IPDM E/R during fail-safe mode is as follows:
Controlled system Fail-safe mode
Headlamp• With the ignition switch ON, the headlamp (low) is ON.
• With the ignition switch OFF, the headlamp (low) is OFF.
Tail and parking lamps• With the ignition switch ON, the tail and parking lamps are ON.
• With the ignition switch OFF, the tail and parking lamps are OFF.
Cooling fan• With the ignition switch ON, the cooling fan HI operates.
• With the ignition switch OFF, the cooling fan stops.
Front wiperUntil the ignition switch is turned off, the front wiper LO and HI remains in the same status it
was in just before fail−safe control was initiated.
Rear window defogger Rear window defogger relay OFF
A/C compressor A/C compressor OFF
Front fog lamps Front fog lamp relay OFF