INFINITI QX4 2005 Factory Service Manual

AV-32
AUDIO
Revision: October 20052005 QX56
Steering Switch CheckEKS00BIJ
1. AV SWITCH SELF-DIAGNOSIS FUNCTION CHECK
1. Start AV switch self-diagnosis function. Refer to AV- 2 7 , "
AV Switch Self-Diagnosis Function" .
2. Operate steering switch.
Does steering switch operate normally?
YES >> Inspection End.
NO >> GO TO 2.
2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect AV switch connector M98 and spiral cable connector M30.
3. Check continuity between spiral cable harness connector terminal and AV switch harness connector ter-
minal.
4. Check continuity between AV switch and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness.
3. SPIRAL CABLE CHECK
1. Disconnect spiral cable connectors M30 and M102.
2. Check continuity between spiral cable terminals.
OK or NG
OK >> GO TO 4.
NG >> Replace spiral cable. Refer to SRS-48, "
SPIRAL CABLE" .
Te r m i n a l s
Continuity Spiral cable AV switch
Connector Terminal Connector Terminal (Wire color)
M3032 (G)
M9813 (G)
Ye s 31 (L) 14 (L)
24 (R) 12 (R)
Te r m i n a l s
Continuity AV s w i t c h
—
Connector Terminal (Wire color)
M9812 (R)
Ground No 13 (G)
14 (L)
WKIA1600E
Terminals
Continuity Spiral cable
Connector Terminal Connector Terminal
M3032
M10216
Ye s 31 17
24 20
WKIA3489E

AUDIO
AV-33
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: October 20052005 QX56
4. CHECK STEERING SWITCH RESISTANCE
Check resistance between steering switch terminals.
OK or NG
OK >> Inspection End.
NG >> Replace steering switch. Refer to AV- 4 7 , "
Removal and Installation of Steering Wheel Audio Con-
trol Switches" .
AV Switch CheckEKS00BIK
1. AV SWITCH SELF-DIAGNOSIS FUNCTION CHECK
1. Perform AV switch self-diagnosis function. Refer to AV- 2 7 , "
AV Switch Self-Diagnosis Function" .
Does AV switch operate normally?
YES >> Inspection End.
NO >> GO TO 2.
2. CHECK AV SWITCH POWER SUPPLY AND GROUND CIRCUIT
1. Check AV switch power supply and ground circuit. Refer to AV-120, "
Power Supply and Ground Circuit
Check for AV Switch" .
OK or NG
YES >> Replace AV switch. Refer to AV-45, "Removal and Installation for AV Switch" .
NO >> Repair malfunctioning part.
Audio Communication Line CheckEKS00BIL
1. CHECK AUDIO COMMUNICATION LINE
Start audio communication line check. Refer to AV-126, "
Audio Communication Line Check (Between Display
Control Unit and Audio Unit)" .
OK or NG
OK >> Inspection End.
NG >> Replace malfunctioning part.
Terminal Signal name ConditionResistance
(Ω)
(Approx.)
16 17Seek (down) Depress (station) down switch. 165
Power Depress power switch. 0
Volume (down) Depress volume down switch. 652
20 17Seek (up) Depress (station) up switch. 165
Mode Depress mode switch. 0
Volume (up) Depress volume up switch. 652
WKIA3490E

AV-34
AUDIO
Revision: October 20052005 QX56
Sound Is Not Heard From Front Door Speaker or Front TweeterEKS00BIM
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: October 20052005 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 between BOSE speaker amp. harness connec-
tor M113 terminals 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: October 20052005 QX56
3. HARNESS CHECK
1. Disconnect audio unit connector M43 and BOSE speaker amp. connector M113.
2. Check continuity between audio unit harness connector termi-
nals and BOSE speaker amp. harness connector terminals.
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: October 20052005 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 between audio unit harness connector termi-
nals 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: October 20052005 QX56
Sound Is Not Heard From Rear Door Speaker or Rear Door TweeterEKS00BIN
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: October 20052005 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 between BOSE speaker amp. harness connec-
tor M113 terminals 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: October 20052005 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-
minals and BOSE speaker amp. harness connector M113 termi-
nals.
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: October 20052005 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 between audio unit harness connector M44
terminals 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 SpeakerEKS00BIO
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 M112 terminals and center speaker harness connector M110
terminals.
3. Check continuity between BOSE speaker amp. harness connec-
tor M112 terminals 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