Page 633 of 3383

AV-40
AUDIO
Revision: November 20092006 QX56
Satellite Radio Tuner (Factory Installed) Left Channel Audio Signal Circuit
Inspection
EKS00GB5
1. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect satellite radio tuner (factory installed) connector M41 (A) and audio unit connector M42 (B).
3. Check continuity between satellite radio tuner (factory installed) and audio unit.
4. Check continuity between satellite radio tuner (factory installed) and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2. CHECK LEFT CHANNEL AUDIO SIGNAL
1. Connect satellite radio tuner (factory installed) and audio unit.
2. Turn ignition switch ON.
3. Check signal between satellite radio tuner (factory installed) connector M41 terminals 21 and 22 with CONSULT-ll or oscillo-
scope.
OK or NG
OK >> Replace satellite radio tuner (factory installed). Refer to AV- 5 8 , "
SATELLITE RADIO TUNER" .
NG >> Replace audio unit. Refer to AV- 5 5 , "
AUDIO UNIT" .
Terminals
Continuity
Satellite radio tuner (factory
installed) Audio unit
Connector Terminal Connector Terminal
A: M41 21
B: M42 41
Ye s
22 42
Terminals Continuity
Satellite radio tuner (factory installed)
—
Connector Terminal
A: M41 21
GroundNo
22
WKIA4547E
21 - 22 : Refer to AV- 3 0 , "Terminals
and Reference Value for Sat-
ellite Radio Tuner (Factory
Installed)" .
WKIA4548E
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AUDIOAV-41
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Revision: November 2009 2006 QX56
Satellite Radio Tuner (Factory Installed) Right Channel Audio Signal Circuit
Inspection
EKS00GB6
1. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect satellite radio tuner (factory installed) connector M41 (A) and audio unit connector M42 (B).
3. Check continuity between satellite radio tuner (factory installed) and audio unit.
4. Check continuity between satellite radio tuner (factory installed) and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2. CHECK RIGHT CHANNEL AUDIO SIGNAL
1. Connect satellite radio tuner (factory installed) and audio unit.
2. Turn ignition switch ON.
3. Check signal between satellite radio tuner (factory installed) connector M41 terminals 23 and 24 with CONSULT-ll or oscillo-
scope.
OK or NG
OK >> Replace satellite radio tuner (factory installed). Refer to AV- 5 8 , "
SATELLITE RADIO TUNER" .
NG >> Replace audio unit. Refer to AV- 5 5 , "
AUDIO UNIT" .
Steering Switch CheckEKS00BIJ
1. AV SWITCH SELF-DIAGNOSIS FUNCTION CHECK
1. Start AV switch self-diagnosis function. Refer to AV- 3 1 , "
AV Switch Self-Diagnosis Function" .
2. Operate steering switch.
Does steering switch operate normally?
YES >> Inspection End.
NO >> GO TO 2.
Terminals
Continuity
Satellite radio tuner (factory
installed) Audio unit
Connector Terminal Connector Terminal
A: M41 23
B: M42 43
Ye s
24 44
Terminals Continuity
Satellite radio tuner (factory installed)
—
Connector Terminal
A: M41 23
GroundNo
24
WKIA4549E
23 - 24 : Refer to AV- 3 0 , "Terminals
and Reference Value for Sat-
ellite Radio Tuner (Factory
Installed)" .
WKIA4550E
Page 635 of 3383

AV-42
AUDIO
Revision: November 20092006 QX56
2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect bluetooth control unit connector and spiral cable connector M30.
3. Check continuity between bluetooth control unit (A) connector B141 terminals 12, 14, and 13 and spiral cable (B) connector M30 terminals 24, 31, and 32.
4. Check continuity between bluetooth control unit and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness.
3. CHECK HARNESS
1. Disconnect AV switch connector.
2. Check continuity between AV switch (A) connector M98 terminals 12, 13, and 14 and bluetooth control unit (B) connector B141 terminals 17, 18, and 19.
OK or NG
OK >> GO TO 4.
NG >> Repair harness.
Te r m i n a l s Continuity
AB
Connector Terminal Connector Terminal
B141 12
M30 24
Ye s
13 32
14 31
Te r m i n a l s Continuity
( + )
( - )
Connector Terminal
B141 12
Ground No
13
14
WKIA5348E
Te r m i n a l s
Continuity
AB
Connector Terminal Connector Terminal
M98 12
B141 17
Ye s
13 18
14 19
WKIA6100E
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AUDIOAV-43
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Revision: November 2009 2006 QX56
4. SPIRAL CABLE CHECK
1. Disconnect spiral cable connector M102.
2. Check continuity between spiral cable terminals.
OK or NG
OK >> GO TO 5.
NG >> Replace spiral cable. Refer to SRS-48, "
SPIRAL CABLE" .
5. CHECK STEERING SWITCH RESISTANCE
Check resistance between steering switch terminals.
OK or NG
OK >> Inspection End.
NG >> Replace steering switch. Refer to AV- 5 9 , "
STEERING WHEEL AUDIO CONTROL SWITCHES" .
AV Switch CheckEKS00BIK
1. AV SWITCH SELF-DIAGNOSIS FUNCTION CHECK
1. Perform AV switch self-diagnosis function. Refer to AV- 3 1 , "
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- 1 3 0 , "
Power Supply and Ground Circuit
Check for AV Switch" .
OK or NG
YES >> Replace AV switch. Refer to AV- 5 5 , "AV SWITCH" .
NO >> Repair malfunctioning part.
Terminals
Continuity
Spiral cable
Connector Terminal Connector Terminal
M30 32
M102 16
Ye s
31 17
24 20
WKIA4424E
Terminal Signal name ConditionResistance
(Ω )
(Approx.)
16 17 Seek (down) Depress (station) down switch. 165
Power
Depress power switch. 0
Volume (down) Depress volume down switch. 652
20 17 Seek (up) Depress (station) up switch.
165
Mode Depress mode switch. 0
Volume (up) Depress volume up switch. 652
WKIA4457E
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AV-44
AUDIO
Revision: November 20092006 QX56
Audio Communication Line CheckEKS00BIL
1. CHECK AUDIO COMMUNICATION LINE
Start audio communication line check. Refer to AV- 1 3 6 , "
Audio Communication Line Check (Between Display
Control Unit and Audio Unit)" .
OK or NG
OK >> Inspection End.
NG >> Replace malfunctioning part.
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
Connector Terminal Connector Terminal
M113 13
D12 +
Ye s
14 -
15
D112 +
16 -
13 M109 +
14 -
15 M 111 +
16 -
Terminals Continuity
BOSE speaker amp.
—
Connector Terminal
M113 13
Ground No
14
15
16
WKIA2018E
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AUDIOAV-45
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Revision: November 2009 2006 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- 5 6 , "FRONT
DOOR SPEAKER" or AV- 5 6 , "FRONT TWEETER" .
NG >> GO TO 3.
Te r m i n a l s
Condi-tion Reference
signal
(+)
(-)
Con-
nector Terminal
Con-
nector Terminal
M113 13
M113 14
Receive
audio
signal
15
16
WKIA4555E
SKIA0177E
Page 639 of 3383
AV-46
AUDIO
Revision: November 20092006 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.
Terminals Continuity
Audio unit BOSE speaker amp.
Connector Terminal Connector Terminal
M43 1
M113 29
Ye s
23
0
32 7
42 8
Te r m i n a l s Continuity
Audio unit
—
Connector Terminal
M43 1
Ground No
2
3
4
SKIA4284E
Page 640 of 3383
AUDIOAV-47
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AV
Revision: November 2009 2006 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- 5 5 , "BOSE
SPEAKER AMP." .
NG >> Replace audio unit. Refer to AV- 5 5 , "
Removal and
Installation" .
Te r m i n a l s
Condi-tion Reference
signal
(+) (-)
Con-
nector Te r m i -
nal Con-
nector Te r m i -
nal
M43 2
M43 1
Receive
audio
signal
43
WKIA4553E
SKIA0177E