2006 INFINITI QX56 fuse box

TROUBLE DIAGNOSISATC-63
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Revision: November 2009 2006 QX56
1. CHECK POWER SUPPLY CIRCUITS FOR FRONT AIR CONTROL
1. Disconnect front air control connector.
2. Check voltage between front air control harness connector M49 terminals 14 and 22, and ground.
OK or NG
OK >> GO TO 2.
NG >> Check 10A fuses [Nos. 8 and 19, located in the fuse block (J/B)]. Refer to PG-76, "
FUSE BLOCK-
JUNCTION BOX (J/B)" .

If fuses are OK, check harness for open circuit. Repair or replace as necessary.

If fuses are NG, replace fuse and check harness for short circuit. Repair or replace as neces-
sary.
2. CHECK GROUND CIRCUIT FOR FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Check continuity between front air control harness connector M49 terminal 1 and ground.
OK or NG
OK >> Replace front air control. Refer to ATC-144, "FRONT
AIR CONTROL" .
NG >> Repair harness or connector.
Terminals Ignition switch position
(+)
(-) OFF ACC ON
Front air
control
connector Terminal No.
M49 14 GroundApprox. 0V Approx. 0V
Battery
voltage
M49 22 Battery
voltage Battery
voltage Battery
voltage
WJIA0415E
1 - Ground : Continuity should exist.
WJIA1351E

ATC-96
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
1. CHECK FUSES
Check 20A fuses [No. 24 and 27 (Located in the fuse and fusible link box)]. For fuse layout. Refer to PG-77,
"FUSE AND FUSIBLE LINK BOX" .
OK or NG
OK >> GO TO 2.
NG >> GO TO 10.
2. CHECK FRONT BLOWER MOTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front blower motor connector.
3. Turn ignition switch ON.
4. Press the mode switch to select any mode except OFF.
5. Turn the front blower control dial to high.
6. Check voltage between front blower motor harness connector M62 terminal 2 and ground.
OK or NG
OK >> GO TO 12.
NG >> GO TO 3.
3. CHECK FRONT BLOWER MOTOR RELAY (SWITCH SIDE) POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front blower motor relay.
3. Check voltage between front blower motor relay harness con- nector M107 terminal 5 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK FRONT BLOWER MOTOR RELAY
Turn ignition switch OFF.
Refer to ATC-100, "
Front Blower Motor Relay" .
OK or NG
OK >> GO TO 5.
NG >> Replace front blower motor relay. Fuses are good.
2 - Ground
: Battery voltage.
WJIA1331E
5 - Ground: Battery voltage.
WJIA1886E

TROUBLE DIAGNOSISATC-105
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Revision: November 2009 2006 QX56
1. DIAGNOSTIC PROCEDURE
Blower motor rotates normally at each speed.
OK or NG
OK >> Inspection End.
NG >> 1. Does not rotate at any speed, GO TO 2. 2. Does not rotate at 1 - 3 speed, GO TO 13.
3. Does not rotate at 4 speed, GO TO 18.
2. CHECK FUSES
Check 15A fuses [Nos. 10 and 11, located in the fuse block (J/B)]. Refer to PG-76, "
FUSE BLOCK-JUNCTION
BOX (J/B)" .
OK or NG
OK >> GO TO 3.
NG >> GO TO 8.
3. CHECK REAR BLOWER MOTOR POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect rear blower motor connector.
3. Select any rear blower speed except OFF.
4. Turn ignition switch ON.
5. Check voltage between rear blower motor harness connector B134 terminal 2 and ground.
OK or NG
OK >> GO TO 11.
NG >> GO TO 4.
4. CHECK REAR BLOWER MOTOR RELAY
Turn ignition switch OFF.
Refer to AT C - 11 0 , "
Rear Blower Motor Relay" .
OK or NG
OK >> GO TO 5.
NG >> Replace rear blower motor relay.
5. CHECK REAR BLOWER MOTOR POWER FROM RELAY TO REAR BLOWER MOTOR
1. Reconnect rear blower motor connector.
2. Disconnect rear blower motor relay J-1.
3. Turn ignition switch ON.
4. Set rear blower switch (front) to any position except OFF, REAR, or 4 - speed.
5. Momentarily (no more than 4 seconds), connect a jumper wire between rear blower motor relay connector J-1 (harness side)
terminals 3 and 5.
OK or NG
OK >> GO TO 6.
NG >> GO TO 10. 2 - Ground
: Battery voltage.
WJIA0596E
Rear blower motor should rotate.WJIA0972E

ATC-106
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
6. CHECK REAR BLOWER MOTOR RELAY (COIL SIDE) POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect fuse block (J/B) connector M39.
3. Turn ignition switch ON.
4. Set rear blower switch (front) to any position except OFF, REAR, or 4 - speed.
5. Check voltage between fuse block (J/B) harness connector M39 terminal 3Q and ground.
OK or NG
OK >> GO TO 7.
NG >> GO TO 20.
7. CHECK REAR BLOWER MOTOR RELAY (COIL SIDE) GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect fuse block (J/B) connector M3.
3. Check continuity between fuse block (J/B) harness connector M3 terminal 7N and ground.
OK or NG
OK >> Replace fuse block (J/B).
NG >> Repair harness or connector.
8. REPLACE FUSE
Refer to PG-76, "
FUSE BLOCK-JUNCTION BOX (J/B)"
Fuse should not open when rear blower motor is activated.
OK or NG
OK >> Inspection End.
NG >> GO TO 9.
9. CHECK REAR BLOWER MOTOR POWER SUPPLY CIRCUIT FOR SHORT
1. Turn ignition switch OFF.
2. Disconnect fuse block (J/B) connector M3 and rear blower motor connector.
3. Check continuity between rear blower motor harness connector B134 terminal 2 and ground.
OK or NG
OK >> Check rear blower motor. Refer to ATC-100, "Front
Blower Motor" .
NG >> Repair harness or connector. 3Q - Ground : Battery voltage.
LJIA0101E
7N - Ground
: Continuity should exist.
WJIA0597E
2 - Ground: Continuity should not exist.
WJIA0598E

AUDIOAV-7
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AV
Revision: November 2009 2006 QX56
1. Fuse block (J/B)2. Fuse and fusible link box 3. Front tweeter LH
M109
4. Combination meter M24 5. Center speaker
M110 6. Display unit
M93
7. Display control unit M94, M95 8. Front tweeter RH
M 111 9. AV Switch
M98
10. Audio unit M43, M44, M45, M46 11. BOSE speaker amp
M112, M113 12. 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, D307 17. Driver seat
18. Subwoofer
B72
19. Rear audio remote control unit R204

AV-8
AUDIO
Revision: November 20092006 QX56
System DescriptionEKS00BI8
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

through body grounds B117 and B132.
Audio signals are supplied

AUDIOAV-9
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Revision: November 2009 2006 QX56

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-64
TELEPHONE
Revision: November 20092006 QX56
TELEPHONEPFP:28342
Component Parts and Harness Connector LocationEKS00GC0
WKIA4565E
1. Fuse block (J/B)2. Fuse and fusible link box 3. Fuse and relay box
4. Combination meter M24 5. AV switch
M98 6. Audio unit
M45
7. BCM M18, M19 8. Steering wheel audio control
switches 9. Microphone
R108
10. Bluetooth ON indicator R16 11. Bluetooth control unit
B141, B142
(View with seat removed)