2007 INFINITI QX56 fog light

TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-129
< SERVICE INFORMATION >
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TROUBLE DIAGNOSIS - SPECIFICATION VALUE
DescriptionINFOID:0000000003531630
The specification (SP) value indicates the tolerance of the value that is displayed in “DATA MONITOR (SPEC)”
mode of CONSULT-II during normal operation of the Engine Control System. When the value in “DATA MONI-
TOR (SPEC)” mode is within the SP value, the Engine Control System is confirmed OK. When the value in
“DATA MONITOR (SPEC)” mode is NOT within the SP value, the Engine Control System may have one or
more malfunctions.
The SP value is used to detect malfunctions that may affect the Engine Control System, but will not light the
MIL.
The SP value will be displayed for the following three items:
• B/FUEL SCHDL (The fuel injection pulse width programmed into ECM prior to any learned on board correc-
tion)
• A/F ALPHA-B1/B2 (The mean value of air-fuel ratio feedback correction factor per cycle)
• MAS A/F SE-B1 (The signal voltage of the mass air flow sensor)
Testing ConditionINFOID:0000000003531631
• Vehicle driven distance: More than 5,000 km (3,107 miles)
• Barometric pressure: 98.3 - 104.3 kPa (1.003 - 1.064 kg/cm
2 , 14.25 - 15.12 psi)
• Atmospheric temperature: 20 - 30°C (68 - 86°F)
• Engine coolant temperature: 75 - 95°C (167 - 203°F)
• Engine speed: Idle
• Transmission: Warmed-up
- After the engine is warmed up to normal operating temperature, drive vehicle until “ATF TEMP SE 1” (A/T
fluid temperature sensor signal) indicates more than 60°C (140°F).
• Electrical load: Not applied
- Rear window defogger switch, air conditioner switch, lighting switch are OFF. Steering wheel is straight
ahead.
Inspection ProcedureINFOID:0000000003531632
NOTE:
Perform “DATA MONITOR (SPEC)” mode in maximum scale display.
1. Perform EC-71, "
Basic Inspection" .
2. Confirm that the testing conditions indicated above are met.
3. Select “B/FUEL SCHDL”, “A/F ALPHA-B1”, “A/F ALPHA-B2”
and “MAS A/F SE-B1” in “DATA MONITOR (SPEC)” mode with
CONSULT-II.
4. Make sure that monitor items are within the SP value.
5. If NG, go to EC-130, "
Diagnosis Procedure" .
SEF601Z

EC-606
< SERVICE INFORMATION >
ELECTRICAL LOAD SIGNAL
ELECTRICAL LOAD SIGNAL
DescriptionINFOID:0000000003532157
The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred
through the CAN communication line from BCM to ECM via IPDM E/R.
CONSULT-II Reference Value in Data Monitor ModeINFOID:0000000003532158
Specification data are reference values.
Diagnosis ProcedureINFOID:0000000003532159
1.CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
1. Turn ignition switch ON.
2. Connect CONSULT-II and select “DATA MONITOR” mode.
3. Select “LOAD SIGNAL” and check indication under the following
conditions.
OK or NG
OK >> GO TO 2.
NG >> GO TO 4.
2.CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
Check “LOAD SIGNAL” indication under the following conditions.
OK or NG
OK >> GO TO 3.
NG >> GO TO 5.
3.CHECK HEATER FAN SIGNAL CIRCUIT OVERALL FUNCTION
MONITOR ITEM CONDITION SPECIFICATION
LOAD SIGNAL • Ignition switch: ONRear window defogger switch is ON
and/or lighting switch is in 2nd.ON
Rear window defogger switch is OFF
and lighting switch is OFF.OFF
HEATER FAN SW• Engine: After warming up, idle the
engineHeater fan control switch: ON ON
Heater fan control switch: OFF OFF
Condition Indication
Rear window defogger switch: ON ON
Rear window defogger switch: OFF OFF
PBIB0103E
Condition Indication
Lighting switch: ON at 2nd position ON
Lighting switch: OFF OFF
PBIB0103E

REAR WINDOW DEFOGGER
GW-75
< SERVICE INFORMATION >
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BCM Power Supply and Ground Circuit InspectionINFOID:0000000003533076
Refer to BCS-15, "BCM Power Supply and Ground Circuit Inspection".
Rear Window Defogger Switch Circuit InspectionINFOID:0000000003533077
1.CHECK REAR WINDOW DEFOGGER SWITCH OPERATION
With CONSULT-II
Check (“REAR DEF SW”, “IGN ON SW”) in DATA MONITOR mode
with CONSULT-II. Refer to GW-74, "
CONSULT-II Function (BCM)".
Without CONSULT-II
1. Turn ignition switch ON.
2. Check voltage between BCM connector and ground.
OK or NG
OK >> Rear window defogger switch check is OK.
NG >> GO TO 2.
2.CHECK REAR WINDOW DEFOGGER SWITCH CIRCUIT HARNESS CONTINUITY
Rear window defogger does not operate but both of door
mirror defoggers operate.1. Rear window defogger circuit checkGW-762. Filament checkGW-80
3. Replace IPDM E/RPG-28
Both door mirror defoggers do not operate but rear window
defogger operates.1. Door mirror defogger power supply circuit checkGW-77
2. Replace IPDM E/RPG-28
Door mirror defogger LH does not operate. 1. Door mirror LH (door mirror defogger) circuit checkGW-78
Door mirror defogger RH does not operate. 1. Door mirror RH (door mirror defogger) circuit checkGW-79
Rear window defogger switch does not light, and rear win-
dow defogger is not shown on the display, but the rear win-
dow defogger operates. 1. Rear window defogger signal checkGW-80
Symptom Diagnoses / Service procedure Refer to page
When rear window defogger switch is turned to ON
REAR DEF SW : ON
When ignition switch is turned to ON
IGN ON SW : ON
PIIA2373E
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M18 9 GroundRear window defogger
switch is pressed.0
Rear window defogger
switch is OFF.5
WIIA0523E

REAR WINDOW DEFOGGER
GW-81
< SERVICE INFORMATION >
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3. If a filament is burned out, circuit tester registers 0 or battery
voltage.
4. To locate burned out point, move probe to left and right along fil-
ament. Test needle will swing abruptly when probe passes the
point.
Filament RepairINFOID:0000000003533084
REPAIR EQUIPMENT
• Conductive silver composition (DuPont No. 4817 or equivalent)
• Ruler 30 cm (11.8 in) long
• Drawing pen
• Heat gun
• Alcohol
• Cloth
REPAIRING PROCEDURE
1. Wipe broken heat wire and its surrounding area clean with a
cloth dampened in alcohol.
2. Apply a small amount of conductive silver composition to tip of
drawing pen.
Shake silver composition container before use.
3. Place ruler on glass along broken line. Deposit conductive silver
composition on break with drawing pen. Slightly overlap existing
heat wire on both sides [preferably 5 mm (0.20 in)] of the break.
4. After repair has been completed, check repaired wire for conti-
nuity. This check should be conducted 10 minutes after silver
composition is deposited.
Do not touch repaired area while test is being conducted.
SEL265
PIIA0215E
SEL012D

TROUBLE DIAGNOSIS
LAN-45
< SERVICE INFORMATION >[CAN]
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Engine speed signal T R R R R R R
Engine status signal T R
Fuel consumption monitor signalTR
RT
ICC steering switch signal T R
Malfunction indicator lamp signal T R
Wide open throttle position signal T R
A/T CHECK indicator lamp signal T R
A/T fluid temperature sensor signal T R
A/T position indicator lamp signal T R R
A/T self-diagnosis signal R T
Current gear position signal T R R
Output shaft revolution signal R T R
P range signal T R R R R
Turbine revolution signal R T R
ICC sensor signal T R
Buzzer output signalTR
TR
ICC OD cancel request signal R R T
ICC operation signal R R T
ICC system display signal T R
System setting signalTR
RT
A/C switch signal R T R
Blower fan motor switch signal R T
Day time running light request signal T R R
Door switch signal R T R R R
Front fog light request signal T R
Front wiper request signal R T R
High beam request signal T R R
Horn chirp signal T R
Ignition switch signal R T R
Key fob door unlock signal R T
Key fob ID signal R T
Key switch signal R T
Low beam request signal T R
Position light request signal T R R
Rear window defogger switch signal T R R
Sleep wake up signal R T R R
Theft warning horn request signal T R
Tire pressure data signal T R
Tire pressure signal T R R
Turn indicator signal T RSignal name/Connecting unit
ECM
TCM
LASER
ICC
ADP
BCM
DISP
HVAC
M&A
STRG
ABS
IPDM-E

TROUBLE DIAGNOSIS
LAN-47
< SERVICE INFORMATION >[CAN]
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Cooling fan speed request signal TR
Engine coolant temperature signal T R R
Engine speed signal T R R R R R R R
Engine status signal T R
Fuel consumption monitor signalTR
RT
ICC steering switch signal T R
Malfunction indicator lamp signal T R
Wide open throttle position signal T R
A/T CHECK indicator lamp signal T R
A/T fluid temperature sensor signal T R
A/T position indicator lamp signal T R R R
A/T self-diagnosis signal R T
Current gear position signal T R R
Output shaft revolution signal R T R R
P range signal T R R R R
Turbine revolution signal R T R
ICC sensor signal T R
Buzzer output signalTR
TR
ICC OD cancel request signal R R T
ICC operation signal R R T
ICC system display signal T R
System setting signalTR
RT
A/C switch signal R T R
Blower fan motor switch signal R T
Day time running light request signal T R R
Door switch signal R T R R R
Front fog light request signal T R
Front wiper request signal R T R
High beam request signal T R R
Horn chirp signal T R
Ignition switch signal R T R
Key fob door unlock signal R T
Key fob ID signal R T
Key switch signal R T
Low beam request signal T R
Position light request signal T R R
Rear window defogger switch signal T R R
Sleep wake up signal R T R R
Theft warning horn request signal T R
Tire pressure data signal T RSignal name/Connecting unit
ECM
TCM
LASER
ICC
ADP
BCM
DISP
HVAC
M&A
STRG
4WD
ABS
IPDM-E

LT-1
ELECTRICAL
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SECTION LT
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CONTENTS
LIGHTING SYSTEM
SERVICE INFORMATION ............................4
PRECAUTIONS ...................................................4
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
4
General precautions for service operations ..............4
HEADLAMP (FOR USA) .....................................5
Component Parts and Harness Connector Loca-
tion ............................................................................
5
System Description ...................................................5
CAN Communication System Description .................7
Schematic .................................................................7
Wiring Diagram - H/LAMP - .......................................8
Terminal and Reference Value for BCM .................11
Terminal and Reference Value for IPDM E/R .........11
How to Proceed with Trouble Diagnosis .................12
Preliminary Check ...................................................12
CONSULT-II Function (BCM) ..................................12
CONSULT-II Function (IPDM E/R) ..........................13
Headlamp HI Does Not Illuminate (Both Sides) ......14
Headlamp HI Does Not Illuminate (One Side) ........15
High Beam Indicator Lamp Does Not Illuminate .....16
Headlamp LO Does Not Illuminate (Both Sides) .....17
Headlamp LO Does Not Illuminate (One Side) .......18
Headlamps Do Not Turn OFF .................................19
Aiming Adjustment ..................................................20
Bulb Replacement ...................................................21
Removal and Installation .........................................22
Disassembly and Assembly ....................................23
HEADLAMP (FOR CANADA) - DAYTIME
LIGHT SYSTEM - ...............................................
24
Component Parts and Harness Connector Loca-
tion ..........................................................................
24
System Description .................................................24
CAN Communication System Description ...............25
Schematic ...............................................................26
Wiring Diagram - DTRL - .........................................27
Terminal and Reference Value for BCM .................30
How to Proceed with Trouble Diagnosis ..................30
Preliminary Check ...................................................31
CONSULT-II Function for BCM ...............................32
CONSULT-II Function for IPDM E/R .......................32
Daytime Light Control Does Not Operate Properly
(Normal Headlamps Operate Properly) ...................
32
Aiming Adjustment ...................................................33
Bulb Replacement ...................................................33
Removal and Installation .........................................33
Disassembly and Assembly .....................................33
AUTO LIGHT SYSTEM .....................................34
Component Parts and Harness Connector Loca-
tion ...........................................................................
34
System Description ..................................................34
CAN Communication System Description ...............35
Major Component and Functions ............................35
Schematic ................................................................36
Wiring Diagram - AUTO/L - .....................................37
Terminal and Reference Value for BCM ..................39
Terminal and Reference Value for IPDM E/R ..........39
How to Proceed with Trouble Diagnosis ..................40
Preliminary Check ...................................................40
CONSULT-II Function (BCM) ..................................40
CONSULT-II Function (IPDM E/R) ..........................41
Trouble Diagnosis Chart by Symptom .....................42
Lighting Switch Inspection .......................................42
Optical Sensor System Inspection ...........................43
Optical Sensor .........................................................44
HEADLAMP AIMING CONTROL ......................45
System Description ..................................................45
Wiring Diagram - H/AIM - ........................................46
Headlamp Aiming Switch .........................................47
Switch Circuit Inspection .........................................48
FRONT FOG LAMP ..........................................49
Component Parts and Harness Connector Loca-
tion ...........................................................................
49
System Description ..................................................49
CAN Communication System Description ...............50

LT-2
Wiring Diagram - F/FOG - ......................................51
Terminal and Reference Value for BCM .................52
Terminal and Reference Value for IPDM E/R .........52
How to Proceed with Trouble Diagnosis .................53
Preliminary Check ..................................................53
CONSULT-II Function for BCM ..............................53
CONSULT-II Function for IPDM E/R ......................53
Front Fog Lamps Do Not Illuminate (Both Sides) ...53
Front Fog Lamp Does Not Illuminate (One Side) ...54
Aiming Adjustment ..................................................55
Bulb Replacement ..................................................55
Removal and Installation ........................................56
TURN SIGNAL AND HAZARD WARNING
LAMPS ...............................................................
57
Component Parts and Harness Connector Loca-
tion ..........................................................................
57
System Description .................................................57
CAN Communication System Description ..............59
Schematic ...............................................................60
Wiring Diagram - TURN - ........................................61
Terminal and Reference Value for BCM .................63
How to Proceed with Trouble Diagnosis .................63
Preliminary Check ..................................................64
CONSULT-II Function (BCM) .................................64
Front Turn Signal Lamp Does Not Operate ............64
Door Mirror Turn Signal Lamp Does Not Operate ...65
Rear Turn Signal Lamp Does Not Operate ............66
Hazard Warning Lamp Does Not Operate But
Turn Signal Lamp Operatess ..................................
67
Turn Signal Indicator Lamp Does Not Operate ......68
Bulb Replacement ..................................................69
Removal and Installation ........................................69
LIGHTING AND TURN SIGNAL SWITCH .........70
Removal and Installation ........................................70
HAZARD SWITCH .............................................71
Removal and Installation ........................................71
COMBINATION SWITCH ..................................72
Wiring Diagram - COMBSW - .................................72
Combination Switch Reading Function ...................72
CONSULT-II Function (BCM) .................................73
Combination Switch Inspection ..............................73
Removal and Installation ........................................76
Switch Circuit Inspection ........................................76
STOP LAMP ......................................................77
System Description .................................................77
Wiring Diagram - STOP/L - .....................................78
Bulb Replacement ..................................................78
Removal and Installation ........................................79
BACK-UP LAMP ................................................80
Wiring Diagram - BACK/L - .....................................80
Bulb Replacement ..................................................80
Removal and Installation ........................................81
PARKING, LICENSE PLATE AND TAIL
LAMPS ...............................................................
82
Component Parts and Harness Connector Loca-
tion ..........................................................................
82
System Description .................................................82
CAN Communication System Description ..............83
Schematic ...............................................................84
Wiring Diagram - TAIL/L - .......................................85
Terminal and Reference Value for BCM .................87
Terminal and Reference Value for IPDM E/R .........87
How to Proceed with Trouble Diagnosis .................88
Preliminary Check ...................................................88
CONSULT-II Function for BCM ...............................88
CONSULT-II Function for IPDM E/R .......................88
Parking, License Plate and/or Tail Lamps Do Not
Illuminate .................................................................
88
Parking, License Plate and Tail Lamps Do Not
Turn OFF (After Approx. 10 Minutes) .....................
91
Bulb Replacement ...................................................91
Removal and Installation .........................................92
REAR COMBINATION LAMP ...........................93
Bulb Replacement ...................................................93
Removal and Installation .........................................93
TRAILER TOW ..................................................94
Component Parts and Harness Connector Loca-
tion ..........................................................................
94
System Description .................................................94
Schematic ...............................................................96
Wiring Diagram - T/TOW - ......................................97
INTERIOR ROOM LAMP ..................................101
Component Parts and Harness Connector Loca-
tion ........................................................................
101
System Description ...............................................101
Schematic .............................................................105
Wiring Diagram - INT/L - .......................................107
Terminal and Reference Value for BCM ...............113
How to Proceed with Trouble Diagnosis ...............113
Preliminary Check .................................................114
CONSULT-II Function (BCM) ...............................114
Room/Map Lamp Control Does Not Operate ........115
Personal Lamp Control Does Not Operate (Room/
Map Lamps Operate) ............................................
116
All Step/Foot/Puddle Lamps Do Not Operate .......117
All Interior Room Lamps Do Not Operate .............118
Ignition Keyhole Illumination Control Does Not
Operate .................................................................
118
ILLUMINATION ................................................120
Component Parts and Harness Connector Loca-
tion ........................................................................
120
System Description ...............................................120
CAN Communication System Description ............122
Schematic .............................................................123
Wiring Diagram - ILL - ...........................................126
Removal and Installation of Illumination Control
Switch ...................................................................
136