Page 577 of 3061

AUDIO
AV-37
< SERVICE INFORMATION >
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AV
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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-46, "
Removal and Installation".
NG >> Replace audio unit. Refer to AV-46, "
Removal and Installation".
Steering Switch CheckINFOID:0000000003533680
1.AV SWITCH SELF-DIAGNOSIS FUNCTION CHECK
1. Start AV switch self-diagnosis function. Refer to AV-28, "
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 M102.23 - 24 : Refer to AV-28, "
Terminal
and Reference Value for Sat-
ellite Radio Tuner (Factory In-
stalled)".
WKIA4550E
Te r m i n a l s
Continuity Spiral cable AV switch
Connector Terminal Connector Terminal
M3032
M9813
Ye s 31 14
24 12
Te r m i n a l s
Continuity AV switch
—
Connector Terminal
M9812
Ground No 13
14
WKIA1600E
Page 578 of 3061

AV-38
< SERVICE INFORMATION >
AUDIO
2. Check continuity between spiral cable terminals.
OK or NG
OK >> GO TO 4.
NG >> Replace spiral cable. Refer to SRS-37, "
Removal and Installation".
4.CHECK STEERING SWITCH RESISTANCE
Check resistance between steering switch terminals.
OK or NG
OK >> Inspection End.
NG >> Replace steering switch. Refer to AV-46, "
Removal and Installation".
AV Switch CheckINFOID:0000000003533681
1.AV SWITCH SELF-DIAGNOSIS FUNCTION CHECK
1. Perform AV switch self-diagnosis function. Refer to AV-28, "
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-113, "
Power Supply and Ground Circuit
Inspection for AV Switch".
OK or NG
YES >> Replace AV switch. Refer to AV-145, "Removal and Installation".
NO >> Repair malfunctioning part.
Audio Communication Line CheckINFOID:0000000003533682
1.CHECK AUDIO COMMUNICATION LINE
Start audio communication line check. Refer to AV-119, "
Audio Communication Line Check (Between Display
Control Unit and Audio Unit)".
OK or NG
OK >> Inspection End.
NG >> Replace malfunctioning part.
Te r m i n a l s
Continuity Spiral cable
Connector Terminal Connector Terminal
M3032
M10216
Ye s 31 17
24 20
WKIA4424E
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
WKIA4457E
Page 579 of 3061

AUDIO
AV-39
< SERVICE INFORMATION >
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Sound Is Not Heard from Front Door Speaker or Front TweeterINFOID:0000000003533683
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.
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.
Te r m i n a l s
Continuity BOSE speaker amp. Speaker or tweeter
Connector Terminal Connector Terminal
M11313
D12+
Ye s 14 -
15
D112+
16 -
13
M109+
14 -
15
M 111+
16 -
Te r m i n a l s
Continuity BOSE speaker amp.
—
Connector Terminal
M11313
Ground No 14
15
16
WKIA2018E
Page 580 of 3061

AV-40
< SERVICE INFORMATION >
AUDIO
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-46, "Removal
and Installation" or AV-46, "Removal and Installation".
NG >> GO TO 3.
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.
4.FRONT SPEAKER SIGNAL CHECK
1. Connect audio unit connector and BOSE speaker amp. connector.
2. Turn ignition switch ACC.
Te r m i n a l s
Condi-
tionReference
signal (+) (-)
Con-
nectorTe r m i n a lCon-
nectorTe r m i n a l
M11313
M11314
Re-
ceive
audio
signal 15 16
WKIA4555E
SKIA0177E
Te r m i n a l s
Continuity Audio unit BOSE speaker amp.
Connector Terminal Connector Terminal
M431
M11329
Ye s 230
327
428
Te r m i n a l s
Continuity Audio unit
—
Connector Terminal
M431
Ground No 2
3
4
SKIA4284E
Page 581 of 3061

AUDIO
AV-41
< SERVICE INFORMATION >
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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-46, "Removal
and Installation".
NG >> Replace audio unit. Refer to AV-46, "
Removal and
Installation".
Sound Is Not Heard from Rear Door Speaker or Rear Door TweeterINFOID:0000000003533684
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.
Te r m i n a l s
Condi-
tionReference
signal (+) (-)
Con-
nectorTe r m i -
nalCon-
nectorTe r m i -
nal
M432
M431
Receive
audio
signal 43
WKIA4553E
SKIA0177E
Te r m i n a l s
Continuity BOSE speaker amp. Speaker or tweeter
Connector Terminal Connector Terminal
M1139
D207+
Ye s 10 -
11
D307+
12 -
9
D208+
10 -
11
D308+
12 -
WKIA1635E
Page 582 of 3061
AV-42
< SERVICE INFORMATION >
AUDIO
OK or NG
OK >> GO TO 2.
NG >> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
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-46, "Removal
and Installation" or AV-46, "Removal and Installation".
NG >> GO TO 3.
3.HARNESS CHECK
1. Disconnect audio unit connector M44 and BOSE speaker amp. connector M113.
Te r m i n a l s
Continuity BOSE speaker amp.
—
Connector Terminal
M1139
Ground No 10
11
12
Te r m i n a l s
Condi-
tionReference
signal (+) (-)
Con-
nec-
torTe r m i n a lCon-
nec-
torTe r m i n a l
M1139
M11310
Re-
ceive
audio
signal 11 1 2
WKIA4557E
SKIA0177E
Page 583 of 3061

AUDIO
AV-43
< SERVICE INFORMATION >
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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.
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-46, "Removal
and Installation".
NG >> Replace audio unit. Refer to AV-46, "
Removal and
Installation".
Te r m i n a l s
Continuity Audio unit BOSE speaker amp.
Connector Terminal Connector Terminal
M4413
M11325
Ye s 14 26
15 23
16 24
Te r m i n a l s
Continuity Audio unit
—
Connector Terminal
M4413
Ground No 14
15
16
SKIA4315E
Te r m i n a l s
Condi-
tionReference
signal (+) (-)
Con-
nectorTe r m i -
nalCon-
nectorTe r m i n a l
M4414
M4413
Re-
ceive
audio
signal 16 15
WKIA4558E
SKIA0177E
Page 584 of 3061

AV-44
< SERVICE INFORMATION >
AUDIO
Sound Is Not Heard from Center Speaker
INFOID:0000000003533685
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.
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 the “POWER” switch.
4. Check the signal between BOSE speaker amp. harness connec-
tor M112 terminals with CONSULT-II or oscilloscope.
OK or NG
OK >> Replace center speaker. Refer to AV-46, "Removal and Installation".
NG >> Replace BOSE speaker amp. Refer to AV-46, "
Removal and Installation".
Sound Is Not Heard from SubwooferINFOID:0000000003533686
1.CHECK FUSE
Te r m i n a l s
Continuity BOSE speaker amp. Center speaker
Connector Terminal Connector Terminal
M1122
M110-
Ye s
18 +
Te r m i n a l s
Continuity BOSE speaker amp.
—
Connector Terminal
M1122
Ground No
18
WKIA1222E
Te r m i n a l s
Condi-
tionReference
signal (+) (-)
Con-
nec-
torTe r m i n a lCon-
nec-
torTe r m i n a l
M112 18 M112 2Re-
ceive
audio
signal
WKIA1223E
SKIA0177E