INFINITI QX56 2004 Factory Service Manual

AV-34
AUDIO
Revision: August 20072004 QX56
Sound Is Not Heard From Front Door Speaker or Front TweeterEKS007KR
1. HARNESS CHECK
1. Disconnect BOSE speaker amp. connector M113 and suspect speaker connector.
2. Check continuity between BOSE speaker amp. harness connec-
tor terminal M113 and suspect speaker harness connector ter-
minal.
3. Check continuity between BOSE speaker amp. harness connec-
tor terminal M113 and ground.
OK or NG
OK >> GO TO 2.
NG >>

Check connector housings for disconnected or loose terminals.

Repair harness or connector.
Terminals
Continuity BOSE speaker amp. Speaker or tweeter
ConnectorTe r m i n a l
(Wire color)ConnectorTerminal
(Wire color)
M11313 (L/W)
D12+ (L/W)
Ye s 14 (L/R) - (L/R)
15 (W/B)
D112+ (W/B)
16 (L/B) - (L/B)
13 (L/W)
M109+ (L/W)
14 (L/R) - (L/R)
15 (W/B)
M 111+ (W/B)
16 (L/B) - (L/B)
Te r m i n a l s
Continuity BOSE speaker amp.
—
Connector Terminal (Wire color)
M11313 (L/W)
Ground No 14 (L/R)
15 (W/B)
16 (L/B)
WKIA2018E

AUDIO
AV-35
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: August 20072004 QX56
2. FRONT SPEAKER SIGNAL CHECK
1. Connect BOSE speaker amp. connector M113 and suspect speaker connector.
2. Turn ignition switch to ACC.
3. Push “POWER” switch.
4. Check the signal BOSE speaker amp. harness connector M113
terminal with CONSULT-II or oscilloscope.
OK or NG
OK >> Replace suspect speaker. Refer to AV- 4 5 , "Removal
and Installation of Front Door Speaker" or AV- 4 6 ,
"Removal and Installation of Front Tweeter" .
NG >> GO TO 3.
Te r m i n a l s
Condi-
tionReference
signal (+) (-)
Con-
nectorTe r m i n a l
(Wire
color)Con-
nectorTe r m i -
nal
(Wire
color)
M11313 (L/W)
M11314 (L/R)
Receive
audio
signal 15 (W/B) 16 (L/B)
SKIA4283E
SKIA0177E

AV-36
AUDIO
Revision: August 20072004 QX56
3. HARNESS CHECK
1. Disconnect audio unit connector and BOSE speaker amp. connector.
2. Check continuity between audio unit harness connector terminal
and BOSE speaker amp. harness connector terminal.
3. Check continuity between audio unit harness connector terminal
and ground.
OK or NG
OK >> GO TO 4.
NG >>

Check connector housings for disconnected or loose terminals.

Repair harness or connector.
Te r m i n a l s
Continuity Audio unit BOSE speaker amp.
ConnectorTe r m i n a l
(Wire color)ConnectorTe r m i n a l
(Wire color)
M431 (B)
M11329 (B)
Ye s 2 (W) 30 (W)
3 (BR) 27 (BR)
4 (Y) 28 (Y)
Te r m i n a l s
Continuity Audio unit
—
Connector Terminal (Wire color)
M431 (B)
Ground No 2 (W)
3 (BR)
4 (Y)
SKIA4284E

AUDIO
AV-37
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: August 20072004 QX56
4. FRONT SPEAKER SIGNAL CHECK
1. Connect audio unit connector and BOSE speaker amp. connector.
2. Turn ignition switch ACC.
3. Push “POWER” switch.
4. Check the signal audio unit harness connector 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" .
Te r m i n a l s
Condi-
tionReference
signal (+) (-)
Con-
nectorTe r m i -
nal
(Wire
color)Con-
nectorTe r m i -
nal
(Wire
color)
M432 (W)
M431 (B)
Receive
audio
signal 4 (Y) 3 (BR)
SKIA4278E
SKIA0177E

AV-38
AUDIO
Revision: August 20072004 QX56
Sound Is Not Heard From Rear Door Speaker or Rear Door TweeterEKS007KS
1. HARNESS CHECK
1. Disconnect BOSE speaker amp. connector M113 and suspect speaker connector.
2. Check continuity between BOSE speaker amp. harness connec-
tor terminal M113 and suspect speaker harness connector ter-
minal.
3. Check continuity between BOSE speaker amp. harness connec-
tor M113 terminal and ground.
OK or NG
OK >> GO TO 2.
NG >>

Check connector housings for disconnected or loose terminals.

Repair harness or connector.
Terminals
Continuity BOSE speaker amp. Speaker or tweeter
ConnectorTe r m i n a l
(Wire color)ConnectorTerminal
(Wire color)
M1139 (SB)
D207+ (SB)
Ye s 10 (B/Y) - (B/Y)
11 (O/L)
D307+ (O/L)
12 (R/L) - (R/L)
9 (SB)
D208+ (SB)
10 (B/Y) - (B/Y)
11 (O/L)
D308+ (O/L)
12 (R/L) - (R/L)
Te r m i n a l s
Continuity BOSE speaker amp.
—
Connector Terminal (Wire color)
M1139 (SB)
Ground No 10 (B/Y)
11 (O/L)
12 (R/L)
WKIA1635E

AUDIO
AV-39
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: August 20072004 QX56
2. REAR SPEAKER SIGNAL CHECK
1. Connect BOSE speaker amp. connector M113 and suspect speaker connector.
2. Turn ignition switch to ACC.
3. Push “POWER” switch.
4. Check the signal BOSE speaker amp. harness connector M113
terminal with CONSULT-II or oscilloscope.
OK or NG
OK >> Replace suspect speaker. Refer to AV- 4 5 , "Removal
and Installation of Rear Door Speaker" or AV- 4 6 ,
"Removal and Installation of Rear Door Tweeter" .
NG >> GO TO 3.
Te r m i n a l s
Condi-
tionReference
signal (+) (-)
Con-
nec-
torTe r m i n a l
(Wire
color)Con-
nec-
torTe r m i n a l
(Wire
color)
M1139 (SB)
M11310 (B/Y)
Receive
audio
signal 11 (O/L) 12 (R/L)
SKIA4314E
SKIA0177E

AV-40
AUDIO
Revision: August 20072004 QX56
3. HARNESS CHECK
1. Disconnect audio unit connector M44 and BOSE speaker amp. connector M113.
2. Check continuity between audio unit harness connector M44 ter-
minal and BOSE speaker amp. harness connector M113 termi-
nal.
3. Check continuity between audio unit harness connector terminal
and ground.
OK or NG
OK >> GO TO 4.
NG >>

Check connector housings for disconnected or loose terminals.

Repair harness or connector.
Te r m i n a l s
Continuity Audio unit BOSE speaker amp.
ConnectorTe r m i n a l
(Wire color)ConnectorTe r m i n a l
(Wire color)
M4413 (B/R)
M11325 (B/R)
Ye s 14 (BR) 26 (BR)
15 (B/W) 23 (B/W)
16 (L) 24 (L)
Te r m i n a l s
Continuity Audio unit
—
Connector Terminal (Wire color)
M4413 (B/R)
Ground No 14 (BR)
15 (B/W)
16 (L)
SKIA4315E

AUDIO
AV-41
C
D
E
F
G
H
I
J
L
MA
B
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
C
D
E
F
G
H
I
J
L
MA
B
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