2007 INFINITI QX56 Factory Service Manual

horn fuses brake pads dead battery open trunk service indicator start stop button

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INFINITI QX56 2007 Factory Service Manual
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If repairing the A/C system or replacing a com ponent, pour the HFC-134a (R-134a) fluorescent leak
detection dye (J-

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If repairing the A/C system or replacing a com ponent, pour the HFC-134a (R-134a) fluorescent leak
detection dye (J-41447) directly into the open system connection and proceed with the service
procedures.
3. Connect the refrigerant dye injector (J- 41459) to the low-pressure service valve.
4. Start the engine and switch the A/C system ON.
5. When the A/C system is operating (compressor runni ng), inject one bottle 7.4 cc (1/4 ounce) of HFC-134a
(R-134a) fluorescent leak detection dye (J-41447) th rough the low-pressure service valve using HFC-
134a (R-134a) dye injector (J-41459). Refer to the manufacturer's operating instructions.
6. With the engine still running, disconnect the HFC-134a (R -134a) dye injector (J-41459) from the low-pres-
sure service valve.
7. Operate the A/C system for a minimum of 20 minut es to mix the HFC-134a (R-134a) fluorescent leak
detection dye (J-41447) with the A/C system oil. Depending on the leak size, operating conditions and
location of the leak, it may take from minutes to days for the HFC-134a (R-134a) fluorescent leak detec-
tion dye to penetrate an A/C system leak and become visible.
Electronic Refrigerant Leak DetectorINFOID:0000000003533310
PRECAUTIONS FOR HANDLING LEAK DETECTOR
NOTE:
When performing a refrigerant leak check, use a electr onic refrigerant leak detector (J-41995) or equivalent.
Ensure that the electronic refrigerant leak detector (J-41995) is calibrated and set properly according to the
manufacturer's operating instructions.
The electronic refrigerant leak detector (J-41995) is a delicate
device. To use the electronic refrigerant leak detector (J-41995)
properly, read the manufacturer's operating instructions and perform
any specified maintenance.
1. Position the probe approximately 5 mm (3/16 in) away from the point to be checked as shown.
2. When checking for leaks, circle each fitting completely with the probe as shown.
AHA281A
SHA707EA
SHA706E

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INFINITI QX56 2007 Factory Service Manual
ATC-168
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REFRIGERANT LINES
3. Move the probe along each component at a speed of approxi-mately 25 - 50 mm (1 - 2 in)/second as shown.
CHECKING PROCEDURE
NOTE:
To prevent inaccu

ATC-168
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REFRIGERANT LINES
3. Move the probe along each component at a speed of approxi-mately 25 - 50 mm (1 - 2 in)/second as shown.
CHECKING PROCEDURE
NOTE:
To prevent inaccurate or false readings, make sure t here is no refrigerant vapor, shop chemicals, or cigarette
smoke in the vicinity of the vehicle. Perform the leak test in a calm area (low air/wind movement) so that \
the
leaking refrigerant is not dispersed.
1. Turn the engine OFF.
2. Connect the manifold gauge set (J-39183-C) to the A/C service ports. Refer to ATC-150, "
HFC-134a (R-
134a) Service Procedure".
3. Check if the A/C refrigerant pressure is at least 345 kPa (3.52 kg/cm
2 , 50 psi) above a temperature of
16 °C (61 °F). If less than specification, recover/evacuat e and recharge the system with the specified
amount of refrigerant. Refer to ATC-150, "
HFC-134a (R-134a) Service Procedure".
NOTE:
At temperatures below 16 °C (61 °F), leaks may not be detected since the system may not reach 345 kPa
(3.52 kg/cm
2 , 50 psi) pressure.
4. Perform the leak test from the high-pressure side (front A/C compressor discharge “a” to evaporator inlet
“f” or rear piping connection “l”) to the low-pressure side (front A/C evaporator drain hose “g” to shaft seal
“k” and rear A/C evaporator drain hose “o” to piping connection “r”). Refer to ATC-152, "
Component".
Clean the component to be checked and carefully move the electronic refrigerant leak detector probe
completely around the following connections and components.
• Check the compressor shaft seal
• Check the high and low-pressure pipe and hose fittings, relief valve, and compressor shaft seal
• Check the liquid tank
• Check the refrigerant pressure sensor
• Check all around the service valves. Check that the service valve caps are screwed tightly on the ser-
vice valves (to prevent leaks).
NOTE:
After removing manifold gauge set (J-39183-C) from the service valves, wipe any residue from the ser-
vice valves to prevent any false readings by the electronic refrigerant leak detector (J-41995).
• Evaporator
With engine OFF, turn blower fan on “High” for at l east 15 seconds to dissipate any refrigerant trace in
the heater and cooling unit assembly. Wait a minimum of 10 minutes accumulation time (refer to the
manufacturer's recommended procedure for actual wait time) before inserting the electronic refrigerant
leak detector probe into the heater and cooling unit assembly drain hose.
NOTE:
Keep the probe inserted for at least 10 seconds. Use c aution not to contaminate the probe tip with water
or dirt that may be in the drain hose.
5. If a leak is detected, verify at least once by blow ing compressed air into the area of the suspected leak,
then repeat the leak check.
6. Do not stop when one leak is found. Continue to c heck for additional leaks at all system components and
connections.
7. If no leaks are found, perform steps 8 - 11.
8. Start the engine.
9. Set the heater A/C controls as follows: NOTE:
For the automatic system, turn OF F the automatic controls and set the heater A/C controls manually.
a. A/C switch to ON
SHA708EA

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b. Air flow to VENT mode
c. Intake position to RECIRCULATION mode
d. Temperature to MAX cold
e. Blower fan speed to

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INFINITI QX56 2007 Factory Service Manual
ATC-170
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Service Data and Specification (SDS)INFOID:0000000003533311
COMPRESSOR
OIL
REFRIGERANT
ENGI

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INFINITI QX56 2007 Factory Service Manual AV-1
ELECTRICAL
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CONTENTS
AUDIO, VISUAL, NAVIGATION & TELEPHONE SYS-
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SERVICE INFORMATION ............................3
PRECAUTIONS .....................

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CONTENTS
AUDIO, VISUAL, NAVIGATION & TELEPHONE SYS-
TEM
SERVICE INFORMATION ............................3
PRECAUTIONS ...................................................3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
3
PREPARATION ...................................................4
Commercial Service Tool ..........................................4
AUDIO .................................................................5
Component Parts and Harness Connector Loca-
tion ............................................................................
5
System Description ...................................................6
Schematic .................................................................8
Wiring Diagram - AUDIO - .........................................9
Terminal and Reference Value for Audio Unit .........20
Terminal and Reference Value for BOSE Speaker
Amp .........................................................................
23
Terminal and Reference Value for Rear Audio Re-
mote Control Unit ....................................................
25
Terminal and Reference Value for AV Switch .........26
Terminal and Reference Value for Satellite Radio
Tuner (Factory Installed) .........................................
28
AV Switch Self-Diagnosis Function .........................28
Trouble Diagnosis ...................................................29
Noise Inspection ......................................................31
Power Supply Circuit Inspection .............................31
Satellite Radio Tuner (Factory Installed) Power
and Ground Supply Circuit Inspection .....................
32
Satellite Radio Tuner (Factory Installed) Commu-
nication Circuit Inspection .......................................
33
Satellite Radio Tuner (Factory Installed) Left
Channel Audio Signal Circuit Inspection .................
35
Satellite Radio Tuner (Factory Installed) Right
Channel Audio Signal Circuit Inspection .................
36
Steering Switch Check ............................................37
AV Switch Check .....................................................38
Audio Communication Line Check ..........................38
Sound Is Not Heard from Front Door Speaker or
Front Tweeter ..........................................................
39
Sound Is Not Heard from Rear Door Speaker or
Rear Door Tweeter ..................................................
41
Sound Is Not Heard from Center Speaker ...............44
Sound Is Not Heard from Subwoofer .......................44
Removal and Installation .........................................46
AUDIO ANTENNA .............................................52
System Description ..................................................52
Wiring Diagram - W/ANT - .......................................53
Location of Antenna .................................................54
Window Antenna Repair ..........................................54
TELEPHONE .....................................................56
Component Parts and Harness Connector Loca-
tion ...........................................................................
56
System Description ..................................................56
Wiring Diagram - H/PHONE - ..................................58
Terminal and Reference Value for Bluetooth Con-
trol Unit ....................................................................
60
Bluetooth Control Unit Self-Diagnosis Function ......60
Power Supply and Ground Circuit Inspection for
Bluetooth Control Unit .............................................
61
Removal and Installation .........................................62
DVD ENTERTAINMENT SYSTEM ....................64
Component Parts and Harness Connector Loca-
tion ...........................................................................
64
Description ...............................................................64
Schematic ................................................................66
Wiring Diagram - DVD - ...........................................67
Trouble Diagnosis ....................................................70
Power Supply Circuit Inspection ..............................70
Removal and Installation .........................................71
NAVIGATION SYSTEM ....................................73
System Description ..................................................73
CAN Communication System Description ...............75
Component Parts Location ......................................76
Schematic ................................................................77
Wiring Diagram - NAVI - ..........................................78
Schematic ................................................................85

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INFINITI QX56 2007 Factory Service Manual AV-2
Wiring Diagram - COMM - ......................................86
Terminal and Reference Value for NAVI Control
Unit .........................................................................
89

AV-2
Wiring Diagram - COMM - ......................................86
Terminal and Reference Value for NAVI Control
Unit .........................................................................
89
Terminal and Reference Value for Display Control
unit ..........................................................................
91
Terminal and Reference Value for Display unit ......95
Terminal and Reference Value for AV Switch ........96
Terminal and Reference Value for BCM .................97
On Board Self-Diagnosis Function .........................97
Self-Diagnosis Mode (DCU) ...................................98
Self-Diagnosis Mode (NAVI) ..................................101
Confirmation/Adjustment Mode .............................103
CAN Diagnostic Support Monitor ...........................109
AV Switch Self-Diagnosis Function .......................110
Power Supply and Ground Circuit Inspection for
NAVI Control Unit ..................................................
110
Power Supply and Ground Circuit Inspection for
Display Control Unit ...............................................
111
Power Supply and Ground Circuit Inspection for
Display Unit ...........................................................
112
Power Supply and Ground Circuit Inspection for
AV Switch ..............................................................
113
Vehicle Speed Signal Inspection for NAVI Control
Unit ........................................................................
114
Vehicle Speed Signal Inspection for Display Con-
trol Unit ..................................................................
115
Illumination Signal Inspection for NAVI Control
Unit ........................................................................
116
Illumination Signal Inspection for Display Control
Unit ........................................................................
116
Ignition Signal Inspection for NAVI Control Unit ....117
Ignition Signal Inspection for Display Control Unit ..117
Reverse Signal Inspection for NAVI Control Unit ..117
Reverse Signal Inspection for Display Control Unit
..
118
AV Communication Line Check (Between Display
Control Unit and NAVI Control Unit) ......................
118
Audio Communication Line Check (Between Dis-
play Control Unit and Audio Unit) ..........................
119
Display Communication Line Check (Between
Display Control Unit and Display Unit) ...................
121
AV Communication Line Check (Between Display
Control Unit and AV Switch) ..................................
122
CAN Communication Line Check ..........................123
If NAVI Control Unit Detects That DVD-ROM Map
Is Not Inserted .......................................................
123
If NAVI Control Unit Detects That Inserted DVD-
ROM Map Is Malfunctioning or If It Is Impossible to
Load Data from DVD-ROM Map ...........................
123
If Connection Between NAVI Control Unit and
GPS Antenna Is Malfunctioning ............................
124
Operating Screen for Audio and A/C Is Not Dis-
played When Showing NAVI Screen ....................
124
Color of RGB Image Is Not Proper (Only NAVI
Screen Looks Bluish) ............................................
125
Color of RGB Image Is Not Proper (Only NAVI
Screen Looks Reddish) .........................................
126
Color of RGB Image Is Not Proper (Only NAVI
Screen Looks Yellowish) .......................................
127
Color of RGB Image Is Not Proper (All Screens
Look Bluish) ..........................................................
128
Color of RGB Image Is Not Proper (All Screens
Look Reddish) .......................................................
129
Color of RGB Image Is Not Proper (All Screens
Look Yellowish) .....................................................
129
NAVI Screen Is Rolling .........................................130
Guide Sound Is Not Heard ....................................132
Screen Is Not Shown ............................................132
A/C Screen Is Not Shown (NAVI Screen Is
Shown) ..................................................................
133
FUEL ECONOMY Screen Is Not Shown ..............133
Average Fuel Economy Display Is Not Shown ("
*** " Is Shown) .......................................................
133
Distance to Empty Display Is Not Shown (" *** " Is
Shown) ..................................................................
133
Driving Distance or Average Speed Display Is Not
Shown (" *** " Is Shown) .......................................
134
WARNING DOOR OPEN Screen Is Not Shown ...134
Unable to Operate All of AV Switches (Unable to
Start Self-Diagnosis) .............................................
134
Audio Does Not Work ...........................................135
Navigation System Does Not Activate ..................135
Previous NAVI Conditions Are Not Stored ............135
Previous Vehicle Conditions Are Not Stored ........135
Position of Current Location Mark Is Not Correct .135
Radio Wave from GPS Satellite Is Not Received .136
Driving Test ...........................................................136
Example of Symptom Judged Not Malfunction .....137
Program Loading of NAVI Control Unit .................145
Removal and Installation .......................................145

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INFINITI QX56 2007 Factory Service Manual PRECAUTIONS
AV-3
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Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INF

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INFINITI QX56 2007 Factory Service Manual AV-4
< SERVICE INFORMATION >
PREPARATION
PREPARATION
Commercial Service ToolINFOID:0000000003533662
Tool nameDescription
Power toolLoosening bolts and nuts
PBIC0191E

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