2007 INFINITI QX56 fuse box

TROUBLE DIAGNOSISATC-81
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COMPONENT DESCRIPTION
Variable Blower Control
The variable blower control is located on the cooling unit. The vari-
able blower control receives a gate voltage from the front air control
to steplessly maintain the blower motor voltage in the 0 to 5 volt
range (approx.).
DIAGNOSTIC PROCEDURE FOR BLOWER MOTOR
SYMPTOM: Blower motor operation is malfunctioning under starting
blower speed control.
1.CHECK FUSES
Check 20A fuses [No. 24 and 27 (Located in the fuse and fusible link box)]. For fuse layout. Refer to PG-
74PG-74.
OK or NG
OK >> GO TO 2.
NG >> GO TO 10.
2.CHECK FRONT BLOWER MOTOR POWER SUPPLY CIRCUIT
WJIA0559E
WJIA1358E
Fuses are good.

AUDIO
AV-5
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AUDIO
Component Parts and Harness Connector LocationINFOID:0000000003533663
WKIA4561E
1. Fuse block (J/B) 2. Fuse and fusible link box 3. Front tweeter LH
M109
4. Combination meter
M245. Center speaker
M1106. Display unit
M93

AV-6
< SERVICE INFORMATION >
AUDIO
System Description
INFOID:0000000003533664
Refer to Owner's Manual for audio system operating instructions.
Power is supplied at all times
• through 15A fuse [No. 17, located in the fuse block (J/B)]
• to subwoofer terminal 6
• through 20A fuse [No. 31, located in the fuse and fusible link box]
• to audio unit terminal 6
• to BOSE speaker amp. terminal 1
• to AV switch terminal 1 and
• to display control unit terminal 1.
With the ignition switch in the ACC or ON position, power is supplied
• through 10A fuse [No. 4, located in the fuse block (J/B)]
• to audio unit terminal 10 and
• to AV switch terminal 2 and
• to display control unit terminal 10.
With the ignition switch in the ON or START position, power is supplied
• through 10A fuse [No. 12, located in the fuse block (J/B)]
• to display control unit terminal 12.
Ground is supplied through the case of the audio unit.
Ground is also supplied
• to subwoofer terminal 5
• through body grounds B7 and B19 and
• to BOSE speaker amp. terminal 17
• to AV switch terminal 5 and
• to display unit terminal 1 and
• to display control unit terminal 3
• through body grounds M57, M61 and M79.
Then audio signals are supplied
• through audio unit terminals 1, 2, 3, 4, 13, 14, 15 and 16
• to BOSE speaker amp. terminals 23, 24, 25, 26, 27, 28, 29 and 30.
Audio signals are amplified by the BOSE speaker amp.
The amplified audio signals are supplied
• through BOSE speaker amp. terminals 2, 3, 9,10,11,12, 13, 14, 15, 16, 18 and 19
• to terminals + and - of front door speaker LH and RH and
• to terminals + and - of front tweeter LH and RH and
• to terminals + and - of center speaker and
• to terminals + and - of rear door speaker LH and RH and
• to terminals + and - of rear door tweeter LH and RH and
• to terminals 1 and 2 of subwoofer.
When one of steering wheel audio control switches is pushed, the resistance in steering switch circuit changes
depending on which button is pushed.
Rear Audio Remote Control Unit
Power is supplied
• from audio unit terminal 32
• to rear audio remote control unit terminal 13.
Ground is supplied
• to rear audio remote control unit terminal 15
7. Display control unit
M94, M958. Front tweeter RH
M 1119. AV Switch
M98
10. Audio unit
M43, M44, M45, M4611. BOSE speaker amp
M112, M11312. Satellite radio tuner (pre-wiring or factory
installed, if equipped)
M41
13. Steering wheel audio control switches 14. Front door speaker LH, RH
D12, D11215. Rear door tweeter LH, RH
D208, D308
16. Rear door speaker LH, RH
D207, D30717. Driver seat 18. Subwoofer
B72
19. Rear audio remote control unit
R204

AUDIO
AV-7
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• through body grounds B117 and B132.
Audio signals are supplied
• through audio unit terminals 26, 27, 28 and 29
• to terminals 1, 2, 3, and 4 of rear audio remote control unit.
Satellite Radio Tuner (Pre-wiring)
NOTE:
The satellite radio pre-wiring allows connection of a satellite radio tuner.
Power is supplied at all times
• through 20A fuse [No. 31, located in the fuse and fusible link box]
• to satellite radio tuner terminal 32.
With the ignition switch in the ACC or ON position, power is supplied
• through 10A fuse [No. 4, located in the fuse block (J/B)]
• to satellite radio tuner terminal 36.
Audio signals are supplied
• through satellite radio tuner terminals 21, 22, 23 and 24
• to terminals 41, 42, 43 and 44 of audio unit.
Ground is supplied through the case of the satellite radio tuner.
Satellite Radio Tuner (Factory Installed)
NOTE:
Factory installed satellite radio systems may be identified by the location of the satellite radio tuner (factory
installed) antenna. Factory installed satellite radio antennas are installed on the front of the roof. Dealer
installed antennas may be installed anywhere on the roof.
Power is supplied at all times
• through 20A fuse [No. 31, located in the fuse and fusible link box]
• to satellite radio tuner (factory installed) terminal 32.
With the ignition switch in the ACC or ON position, power is supplied
• through 10A fuse [No. 4, located in the fuse block (J/B)]
• to satellite radio tuner (factory installed) terminal 36.
Radio signals are supplied from the satellite radio antenna to satellite radio tuner (factory installed) terminal
37.
Audio signals are supplied
• through satellite radio tuner (factory installed) terminals 21, 22, 23 and 24
• to terminals 41, 42, 43 and 44 of audio unit.
Ground is supplied through the case of the satellite radio tuner (factory installed).
SPEED SENSITIVE VOLUME SYSTEM
Volume level of this system goes up and down automatically in proportion to the vehicle speed. The control
level can be selected by the customer. Refer to Owner's Manual for operating instructions.

AV-56
< SERVICE INFORMATION >
TELEPHONE
TELEPHONE
Component Parts and Harness Connector LocationINFOID:0000000003533692
System DescriptionINFOID:0000000003533693
BLUETOOTH® HANDS-FREE PHONE SYSTEM
Refer to the Owner's Manual for Bluetooth telephone system operating instructions.
NOTE:
Cellular telephones must have their wireless connection set up (paired) before using the Bluetooth telephone
system.
WKIA4565E
1. Fuse block (J/B) 2. Fuse and fusible link box 3. Fuse and relay box
4. Combination meter
M245. AV switch
M986. Audio unit
M45
7. BCM
M18, M198. Steering wheel audio control
switches9. Microphone
R108
10. Bluetooth ON indicator
R1611. Bluetooth control unit
B141, B142
(View with seat removed)

AV-64
< SERVICE INFORMATION >
DVD ENTERTAINMENT SYSTEM
DVD ENTERTAINMENT SYSTEM
Component Parts and Harness Connector LocationINFOID:0000000003533699
DescriptionINFOID:0000000003533700
Refer to Owner's Manual for DVD entertainment system operating instructions.
Power is supplied at all times
• through 20A fuse (No. 31, located in the fuse and fusible link box)
• to DVD player terminal 16.
With the ignition switch in the ACC or ON position, power is supplied
• through 10A fuse [No. 4, located in the fuse block (J/B)]
• to DVD player terminal 15.
Power is also supplied
• from DVD player terminals 31 and 32
WKIA4570E
1. Fuse block (J/B)
M42. Fuse and fusible link box 3. Audio Unit
M46
4. DVD player
M205, M2065. Video Monitor
R202

AV-76
< SERVICE INFORMATION >
NAVIGATION SYSTEM
Component Parts Location
INFOID:0000000003533708
WKIA4571E
1. Fuse block (J/B) 2. Fuse and fusible link box 3. Combination switch
M28
4. Combination meter
M245. GPS antenna 6. Display unit
M93
7. Display control unit
M94, M958. AV switch
M989. Audio unit
M45
10. Data link connector
M2211 . B C M
M18, M2012. Steering wheel audio control switches
13. NAVI control unit
B151, B152, B15414. IPDM E/R
E121, E124

BCM (BODY CONTROL MODULE)
BCS-15
< SERVICE INFORMATION >
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BCM Power Supply and Ground Circuit InspectionINFOID:0000000003533601
1.CHECK FUSES AND FUSIBLE LINK
• Check 50A fusible link (letter f, located in the fuse and fusible link box).
• Check 10A fuse [No. 4, located in the fuse block (J/B)] and 15A fuse [No. 22, located in the fuse block (J/B)].
58 W/R Optical sensor Input ONWhen optical sensor is illumi-
nated3.1V or more
When optical sensor is not illu-
minated0.6V or less
59 GFront door lock as-
sembly LH actuator
(unlock)Output OFFOFF (neutral) 0V
ON (unlock) Battery voltage
60 G/B Turn signal LH Output ON Turn left ON
61 G/Y Turn signal RH Output ON Turn right ON
62 R/W Step lamp LH and RH Output OFFON (any door open) 0V
OFF (all doors closed) Battery voltage
63 LInterior room/map
lampOutput OFFAny door
switchON (open) 0V
OFF (closed) Battery voltage
65 VAll door lock actuators
(lock)Output OFFOFF (neutral) 0V
ON (lock) Battery voltage
66 G/YFront door lock actua-
tor RH, rear door lock
actuators LH/RH and
back door lock actua-
tor (unlock)Output OFFOFF (neutral) 0V
ON (unlock) Battery voltage
67 B Ground Input ON — 0V
68 W/LPower window power
supply (RAP)Output —Ignition switch ON Battery voltage
Within 45 seconds after igni-
tion switch OFFBattery voltage
More than 45 seconds after ig-
nition switch OFF0V
When front door LH or RH is
open or power window timer
operates0V
69 W/RPower window power
supplyOutput — — Battery voltage
70 W/B Battery power supply Input OFF — Battery voltage Te r m i n a lWire
colorSignal nameSignal
input/
outputMeasuring condition
Reference value or waveform
(Approx.) Ignition
switchOperation or condition
SKIA3009J
SKIA3009J