2010 INFINITI QX56 Factory Service Manual

headlamp compression ratio adding oil engine coolant tire size open hood

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INFINITI QX56 2010 Factory Service Manual EXL-1
DRIVER CONTROLS
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CONTENTS
EXTERIOR LIGHTING SYSTEM
BASIC INSPECTION ....... .............................4
DIAGNOSIS AND REPAIR WORKFLOW ..... .....

EXL-1
DRIVER CONTROLS
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SECTION EXL
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CONTENTS
EXTERIOR LIGHTING SYSTEM
BASIC INSPECTION ....... .............................4
DIAGNOSIS AND REPAIR WORKFLOW ..... .....4
Work Flow ........................................................... ......4
FUNCTION DIAGNOSIS ...............................7
HEADLAMP .................................................... .....7
System Diagram .................................................. ......7
System Description ...................................................7
Component Parts Location ........................................7
Component Description .............................................7
DAYTIME LIGHT SYSTEM .................................9
System Diagram .................................................. ......9
System Description ...................................................9
Component Parts Location ........................................9
Component Description ...........................................10
AUTO LIGHT SYSTEM ......................................11
System Diagram ......................................................11
System Description .................................................11
Component Parts Location ......................................12
Component Description ...........................................12
HEADLAMP AIMING SYSTEM (MANUAL) .......13
System Diagram .................................................. ....13
System Description .................................................13
Component Parts Location ......................................13
Component Description ...........................................13
FRONT FOG LAMP ............................................14
System Diagram .................................................. ....14
System Description .................................................14
Component Parts Location ......................................14
Component Description ...........................................14
TURN SIGNAL AND HAZARD WARNING
LAMPS ...............................................................
15
System Diagram .................................................. ....15
System Description .................................................15
Component Parts Location ......................................15
Component Description ....................................... ....16
PARKING, LICENSE PLATE AND TAIL
LAMPS ..............................................................
17
System Diagram ......................................................17
System Description ..................................................17
Component Parts Location ......................................17
Component Description ...........................................18
DIAGNOSIS SYSTEM (BCM) ...........................19
HEADLAMP ........................................................... ....19
HEADLAMP : CONSULT-III Function (BCM -
HEAD LAMP) ...........................................................
19
FLASHER ............................................................... ....20
FLASHER : CONSULT-III Function (BCM -
FLASHER) ...............................................................
20
COMB SW .............................................................. ....20
COMB SW : CONSULT-III Function (BCM -
COMB SW) ..............................................................
20
DIAGNOSIS SYSTEM (IPDM E/R) ...................22
Diagnosis Description ..............................................22
CONSULT - III Function (IPDM E/R) .......................24
COMPONENT DIAGNOSIS .........................27
POWER SUPPLY AND GROUND CIRCUIT ....27
BCM (BODY CONTROL MODULE) ...................... ....27
BCM (BODY CONTROL MODULE) : Diagnosis
Procedure ............................................................ ....
27
IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) .......................... ....
28
IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) : Diagnosis Pro-
cedure .................................................................. ....
28
HEADLAMP (HI) CIRCUIT ................................30
Description ...............................................................30
Revision: April 20092010 QX56

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INFINITI QX56 2010 Factory Service Manual EXL-2
Component Function Check ...................................30
Diagnosis Procedure - Without Daytime Light Sys-
tem ..........................................................................
30

EXL-2
Component Function Check ...................................30
Diagnosis Procedure - Without Daytime Light Sys-
tem ..........................................................................
30
Diagnosis Procedure - With Daytime Light System
...
31
HEADLAMP (LO) CIRCUIT ...............................33
Description ........................................................... ...33
Component Function Check ...................................33
Diagnosis Procedure - Without Daytime Light Sys-
tem ..........................................................................
33
Diagnosis Procedure - With Daytime Light System
...
34
FRONT FOG LAMP CIRCUIT ...........................36
Description ........................................................... ...36
Component Function Check ...................................36
Diagnosis Procedure ..............................................36
PARKING LAMP CIRCUIT ................................38
Description ........................................................... ...38
Component Function Check ...................................38
Diagnosis Procedure - Without Daytime Light Sys-
tem ..........................................................................
38
Diagnosis Procedure - With Daytime Light System
...
41
TURN SIGNAL LAMP CIRCUIT ........................44
Description ........................................................... ...44
Component Function Check ...................................44
Diagnosis Procedure ..............................................44
OPTICAL SENSOR ...........................................47
Description ..............................................................47
Component Function Check ...................................47
Diagnosis Procedure ..............................................47
HEADLAMP AIMING SWITCH ..........................49
Description ........................................................... ...49
Diagnosis Procedure - Without Daytime Light Sys-
tem ..........................................................................
49
Diagnosis Procedure - With Daytime Light System
...
50
HEADLAMP .......................................................52
Wiring Diagram .................................................... ...52
DAYTIME LIGHT SYSTEM ................................56
Wiring Diagram .................................................... ...56
AUTO LIGHT SYSTEM ......................................62
Wiring Diagram .................................................... ...62
HEADLAMP AIMING SYSTEM (MANUAL) ......69
Wiring Diagram .................................................... ...69
FRONT FOG LAMP SYSTEM ...........................73
Wiring Diagram .................................................... ...73
TURN SIGNAL AND HAZARD WARNING
LAMP SYSTEM .............................................. ...
77
Wiring Diagram .................................................... ...77
PARKING, LICENSE PLATE AND TAIL
LAMPS SYSTEM ...............................................
84
Wiring Diagram .................................................... ...84
STOP LAMP ......................................................91
Wiring Diagram .................................................... ...91
BACK-UP LAMP ............................................ ...95
Wiring Diagram .................................................... ...95
TRAILER TOW .................................................100
Wiring Diagram .....................................................100
ECU DIAGNOSIS ......................................106
BCM (BODY CONTROL MODULE) ............... ..106
Reference Value .................................................. .106
Terminal Layout ....................................................109
Physical Values .....................................................109
Wiring Diagram .....................................................115
Fail Safe ...............................................................119
DTC Inspection Priority Chart .............................120
DTC Index ............................................................120
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) ................
122
Reference Value .................................................. .122
Terminal Layout ....................................................124
Physical Values .....................................................125
Wiring Diagram .....................................................130
Fail Safe ...............................................................133
DTC Index ............................................................135
SYMPTOM DIAGNOSIS ...........................136
EXTERIOR LIGHTING SYSTEM SYMPTOMS ..136
Symptom Table .................................................... .136
NORMAL OPERATING CONDITION ...............138
Description ........................................................... .138
BOTH SIDE HEADLAMPS DO NOT SWITCH
TO HIGH BEAM ................................................
139
Description ........................................................... .139
Diagnosis Procedure .............................................139
BOTH SIDE HEADLAMPS (LO) ARE NOT
TURNED ON .....................................................
140
Description ............................................................140
Diagnosis Procedure .............................................140
PARKING, LICENSE PLATE AND TAIL
LAMPS ARE NOT TURNED ON ......................
141
Description ........................................................... .141
Diagnosis Procedure .............................................141
BOTH SIDE FRONT FOG LAMPS ARE NOT
TURNED ON .....................................................
142
Description ............................................................142
Diagnosis Procedure .............................................142
Revision: April 20092010 QX56

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INFINITI QX56 2010 Factory Service Manual EXL-3
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PRECAUTION ....... .....................................143
PRECAUTIONS .............................................. ..143
Precaution for Supplemental Restrain

EXL-3
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PRECAUTION ....... .....................................143
PRECAUTIONS .............................................. ..143
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ..
143
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ..
143
General precautions for service operations ..........144
ON-VEHICLE REPAIR .... ...........................145
ADJUSTMENT AND INSPECTION ................ ..145
HEADLAMP ........................................................... ..145
HEADLAMP : Aiming Adjustment .........................145
FRONT FOG LAMP ............................................... ..146
FRONT FOG LAMP : Aiming Adjustment .............146
REMOVAL AND INSTALLATION .............148
HEADLAMP .................................................... ..148
Bulb Replacement .................................................148
Removal and Installation .......................................149
Disassembly and Assembly ................................ ..149
AUTO LIGHT SYSTEM ....................................151
Removal and Installation .......................................151
FRONT FOG LAMP ........................................152
Bulb Replacement ............................................... ..152
Removal and Installation .......................................152
LIGHTING & TURN SIGNAL SWITCH ...........154
Removal and Installation .......................................154
HAZARD SWITCH ..........................................155
Removal and Installation .......................................155
LICENSE PLATE LAMP .................................156
Bulb Replacement .................................................156
Removal and Installation .......................................156
STOP LAMP ....................................................157
Bulb Replacement .................................................157
Removal and Installation .......................................157
REAR COMBINATION LAMP .........................158
Bulb Replacement .................................................158
Removal and Installation .......................................158
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... .......................................... .
159
BULB SPECIFICATIONS ................................159
Headlamp ............................................................ ..159
Exterior Lamp ........................................................159
Revision: April 20092010 QX56

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INFINITI QX56 2010 Factory Service Manual EXL-4
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work FlowINFOID:0000000005146603
OVERALL SEQUENCE
AWLIA1661GB
Revision: April 20092010 QX56

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INFINITI QX56 2010 Factory Service Manual DIAGNOSIS AND REPAIR WORKFLOWEXL-5
< BASIC INSPECTION >
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DETAILED FLOW
1.INTERVIEW FOR MALFUNCTION
Find out what the customers concerns are.
>> GO TO 2.
2.SYMPTOM CHEC

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INFINITI QX56 2010 Factory Service Manual EXL-6
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
YES >> GO TO 5.
NO >> GO TO 11.
11 .REPAIR CHECK (OPERATION CHECK)
Check the operation of each part.
Does it operate normally?
YES >> Inspectio

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INFINITI QX56 2010 Factory Service Manual HEADLAMPEXL-7
< FUNCTION DIAGNOSIS >
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FUNCTION DIAGNOSIS
HEADLAMP
System DiagramINFOID:0000000005146604
System DescriptionINFOID:0000000005369868
Control of the headlam

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INFINITI QX56 2010 Factory Service Manual EXL-8
< FUNCTION DIAGNOSIS >
HEADLAMP
A Xenon type headlamp is adapted to the low beam headlamps. Xenon bulbs do not use a filament. Instead,
they produce light when a high voltage current is pa ssed

EXL-8
< FUNCTION DIAGNOSIS >
HEADLAMP
A Xenon type headlamp is adapted to the low beam headlamps. Xenon bulbs do not use a filament. Instead,
they produce light when a high voltage current is pa ssed between two tungsten electrodes through a mixture
of Xenon (an inert gas) and certain other metal halides. In addition to added lighting power, electronic control
of the power supply gives the headlamps stable quality and tone color. Following are some of the advantages
of the Xenon type headlamp.
• The light produced by the headlamps is a white color comparable to sunlight that is easy on the eyes.
• Light output is nearly double that of halogen headlamps, affording increased area of illumination.
• The light features a high relative spectral distribution at wavelengths to which the human eye is most sensi- tive. This means that even in the rain, more light is reflected back from the road surface toward the vehicle,
for added visibility.
• Power consumption is approximately 25 percent less than halogen headlamps, reducing battery load.
HIGH BEAM OPERATION/FLASH-TO-PASS OPERATION
With the combination switch (lighting and turn signal switch) in the 2ND position and placed in HIGH position,
the BCM receives input requesting the headlamp high beams to illuminate. The flash to pass feature can be
used any time and also sends a signal to the BCM. This input is communicated to the IPDM E/R via the CAN
communication lines. The CPU of the combination meter c ontrols the ON/OFF status off the HIGH BEAM indi-
cator. The CPU of the IPDM E/R controls the headlamp high relay coil which supplies power to the high beam
headlamps.
The combination meter receives a high beam request signal (ON) via the CAN communication lines and turns
the high beam indicator lamp ON.
EXTERIOR LAMP BATTERY SAVER CONTROL
With the combination switch (lighting and turn signal switch) in the 2nd position and the ignition switch is
turned from ON or ACC to OFF, the battery saver feature is activated.
Under this condition, the headlamps remain illuminated for 5 minutes unless the lighting switch position is
changed. If the lighting switch position is changed, then the headlamps are turned off.
This setting can be changed by CONSULT-III. Refer to BCS-22, "
HEADLAMP : CONSULT-III Function (BCM -
HEAD LAMP)".
Revision: April 20092010 QX56

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