2004 INFINITI QX56 audio

AUDIO
AV-41
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AV
Revision: August 20072004 QX56
4. REAR SPEAKER SIGNAL CHECK
1. Connect audio unit connector M44 and BOSE speaker amp. connector M113.
2. Turn ignition switch to ACC.
3. Push “POWER” switch.
4. Check the signal at audio unit harness connector M44 terminal
with CONSULT-II or oscilloscope.
OK or NG
OK >> Replace BOSE speaker amp. Refer to AV- 4 6 , "Removal
and Installation of BOSE Speaker Amp." .
NG >> Replace audio unit. Refer to AV- 4 5 , "
Removal and
Installation for Audio Unit" .
Sound Is Not Heard From Center SpeakerEKS007KT
1. HARNESS CHECK
1. Disconnect BOSE speaker amp. connector M112 and center speaker connector M110.
2. Check continuity between BOSE speaker amp. harness connec-
tor terminal M112 center speaker harness connector terminal
M110.
3. Check continuity between BOSE speaker amp. harness connec-
tor M112 terminal and ground.
OK or NG
OK >> GO TO 2.
NG >>

Check connector housings for disconnected or loose terminals.

Repair harness or connector.
Te r m i n a l s
Condi-
tionReference
signal (+) (-)
Con-
nectorTe r m i -
nal
(Wire
color)Con-
nectorTe r m i n a l
(Wire
color)
M4414
(BR)
M4413 (B/R)
Receive
audio
signal
16 (L) 15 (B/W)
SKIA4316E
SKIA0177E
Te r m i n a l s
Continuity BOSE speaker amp. Center speaker
ConnectorTe r m i n a l
(Wire color)ConnectorTe r m i n a l
(Wire color)
M1122 (R)
M110- (R)
Ye s
18 (V) + (V)
Te r m i n a l s
Continuity BOSE speaker amp.
—
Connector Terminal (Wire color)
M1122 (R)
Ground No
18 (V)
WKIA1222E

AV-42
AUDIO
Revision: August 20072004 QX56
2. CENTER SPEAKER SIGNAL CHECK
1. Connect BOSE speaker amp. connector M112 and center speaker connector M110.
2. Turn ignition switch to ACC.
3. Push “POWER” switch.
4. Check the signal BOSE speaker amp. harness connector M112
terminal with CONSULT-II or oscilloscope.
OK or NG
OK >> Replace center speaker. Refer to AV- 4 6 , "Removal and Installation of Center Speaker" .
NG >> Replace BOSE speaker amp. Refer to AV-46, "
Removal and Installation of BOSE Speaker Amp."
.
Sound Is Not Heard From SubwooferEKS007KU
1. CHECK FUSE

Check that the following fuse is not blown.
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of problem before installing new fuse. Refer to PG-4,
"POWER SUPPLY ROUTING CIRCUIT" .
2. POWER SUPPLY CIRCUIT CHECK
1. Disconnect subwoofer connector.
2. Check voltage between the subwoofer and ground.
OK or NG
OK >> GO TO 3.
NG >>

Check connector housings for disconnected or loose
terminals.

Repair harness or connector.
Te r m i n a l s
Condi-
tionReference
signal (+) (-)
Con-
nec-
torTe r m i n a l
(Wire
color)Con-
nec-
torTerminal
(Wire
color)
M112 18 (V) M112 2 (R)Receive
audio
signal
WKIA1223E
SKIA0177E
Unit Terminal Signal name Fuse No.
Subwoofer 6 Battery power 17
UnitTe r m i n a l N o .
OFF ACC ON (+)
(-)
ConnectorTe r m i n a l
(wire color)
Sub-
wooferB72 6 (R) GroundBattery
voltageBattery
voltageBattery
voltage
WKIA1601E

AUDIO
AV-43
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AV
Revision: August 20072004 QX56
3. GROUND CIRCUIT CHECK
Check continuity between subwoofer harness connector B72 termi-
nal 5 (B) and ground.
OK or NG
OK >> GO TO 4.
NG >>

Check connector housings for disconnected or loose
terminals.

Repair harness or connector.
4. CHECK SUBWOOFER AMP. ON SIGNAL
1. Operate system and check voltage between subwoofer harness
connector B72 terminal 4 (W/G) and ground.
OK or NG
OK >> GO TO 5.
NG >>

Check connector housings for disconnected or loose
terminals.

Repair harness or connector.
5. HARNESS CHECK
1. Disconnect BOSE speaker amp. connector and subwoofer connectors.
2. Check continuity between BOSE speaker amp. harness connec-
tor terminal and subwoofer harness connector harness connec-
tor terminal.
3. Check continuity between BOSE speaker amp. harness connec-
tor terminal and ground.
OK or NG
OK >> GO TO 6.
NG >>

Check connector housings for disconnected or loose terminals.

Repair harness or connector. Continuity should exist.
WKIA1602E
Voltage : More than approx. 6.5V
WKIA2078E
Te r m i n a l s
Continuity BOSE speaker amp. Subwoofer
ConnectorTe r m i n a l
(Wire color)ConnectorTerminal
(Wire color)
M1123 (B) B72 1 (B)
Ye s
19 (W) B72 2 (W)
Terminals
Continuity BOSE speaker amp.
—
Connector Terminal (Wire color)
M1123 (B)
Ground No
19 (W)
WKIA1604E

AV-44
AUDIO
Revision: August 20072004 QX56
6. SUBWOOFER SIGNAL CHECK
1. Connect BOSE speaker amp. connector and subwoofer connector.
2. Turn ignition switch to ACC.
3. Check the signal BOSE speaker amp. harness connector termi-
nal with CONSULT-II or oscilloscope.
OK or NG
OK >> Replace subwoofer. Refer to AV- 4 6 , "Removal and Installation of Subwoofer" .
NG >> Replace BOSE speaker amp. Refer to AV-46, "
Removal and Installation of BOSE Speaker Amp."
.
Te r m i n a l s
Condi-
tionReference
signal (+) (-)
Con-
nec-
torTe r -
minal
(Wire
color)Con-
nec-
torTe r -
minal
(Wire
color)
M11219
(W)M112 3 (B)Receive
audio
signal
WKIA1170E
SKIA0177E

AUDIO
AV-45
C
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AV
Revision: August 20072004 QX56
Removal and Installation for Audio UnitEKS007KV
1. Remove cluster lid C. Refer to IP-12, "Cluster Lid C" .
2. Disconnect the negative battery cable.
3. Using power tool, remove the four audio unit screws.
4. Pull out audio unit and disconnect connectors.
5. Installation is in the reverse order of removal.
Removal and Installation for AV SwitchEKS007KW
1. Remove cluster lid C. Refer to IP-12, "Cluster Lid C" .
2. Remove the four AV switch screws.
3. Carefully remove the AV switch.
4. Installation is in the reverse order of removal.
Removal and Installation of Front Door SpeakerEKS007KX
1. Remove door finisher. Refer to EI-31, "DOOR FINISHER" .
2. Remove the four front door speaker screws.
3. Disconnect connector and remove the speaker.
4. Installation is in the reverse order of removal.
Removal and Installation of Rear Door SpeakerEKS007KY
1. Remove door finisher. Refer to EI-31, "DOOR FINISHER" .
2. Remove the three rear speaker screws and remove speaker.
3. Disconnect connector.
4. Installation is in the reverse order of removal.
WKIA1490E
WKIA1798E
Front door speaker
screws: 3.5 N·m (0.36 kg-m, 31 in-lb)
WKIA1498E
Rear speaker screws : 3.5 N·m (0.36 kg-m, 31 in-lb)
WKIA1492E

AV-46
AUDIO
Revision: August 20072004 QX56
Removal and Installation of Front TweeterEKS007KZ
1. Remove tweeter grille. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
2. Remove tweeter fasteners.
3. Disconnect connector and remove tweeter.
4. Installation is in the reverse order of removal.
Removal and Installation of Rear Door TweeterEKS007L0
1. Remove door finisher. Refer to EI-31, "DOOR FINISHER" .
2. Remove screws and remove tweeter.
3. Installation is in the reverse order of removal.
Removal and Installation of Center SpeakerEKS007L1
1. Remove cluster lid D. Refer to IP-12, "Cluster Lid D" .
2. Remove the screws and remove the center speaker.
3. Installation is in the reverse order of removal.
Removal and Installation of SubwooferEKS007L2
1. Remove front seat LH. Refer to SE-96, "Components" .
2. Remove the subwoofer bolts.
3. Disconnect the connector and remove the subwoofer.
4. Installation is in the reverse order of removal.
Removal and Installation of BOSE Speaker Amp.EKS007L3
1. Remove BCM. Refer to BCS-19, "Removal and Installation of BCM" .
WKIA1494E
WKIA1799E
Subwoofer mounting
bolts: 3.5 N·m (0.36 kg-m, 31 in-lb)
WKIA1496E

AUDIO
AV-47
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AV
Revision: August 20072004 QX56
2. Remove BOSE speaker amp. bracket screws and slide BOSE
speaker amp. down.
3. Disconnect connectors and remove BOSE speaker amp.
4. Installation is in the reverse order of removal.
Removal and Installation of Rear Audio Remote Control UnitEKS007L4
1. Carefully remove the rear audio remote control unit from the rear
roof console assembly.
CAUTION:
Wrap removal tool with clean shop cloth to prevent damage
to the headliner.
2. Disconnect connector and remove the rear audio control unit.
3. Installation is in the reverse order of removal.
Removal and Installation of Steering Wheel Audio Control SwitchesEKS007L5
1. Remove steering wheel. Refer to PS-8, "Removal and Installation" .
2. Remove steering wheel rear cover screws and remove steering wheel rear cover.
3. Remove steering wheel switch assembly screws and steering
wheel switches.
4. Installation is in the reverse order of removal.BOSE speaker amp.
mounting screws: 3.5 N·m (0.36 kg-m, 31 in-lb)
WKIA1605E
WKIA1201E
WKIA1226E

AV-48
AUDIO ANTENNA
Revision: August 20072004 QX56
AUDIO ANTENNAPFP:28200
System DescriptionEKS007L6
With the ignition switch in ACC or ON, power is supplied

through 10A fuse [No. 4, located in the fuse block (J/B)]

to audio unit terminal 10.
Ground is supplied through the case of the antenna amp.
When the radio switch is turned ON, antenna signal is supplied

through audio unit terminal 5

to the antenna amp. terminal 1.
Then the antenna amp. is activated.
The amplified radio signals are supplied to the audio unit through the antenna amp.