2009 INFINITI QX56 phone

AV-76
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
POWER SUPPLY AND GROUND CIRCUIT
MICROPHONE : Diagnosis Procedure
INFOID:0000000003776856
1.CHECK POWER SUPPLY CIRCUIT
Check voltage between microphone harness connector R109 termi-
nal 4 and ground.
Is approximately 5V present?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK POWER SUPPLY CIRCUIT (CONTINUITY)
1. Turn ignition switch OFF.
2. Disconnect microphone and AV control unit harness connectors.
3. Check continuity between microphone harness connector R109 (A) terminal 4 and AV control unit harness connector M45 (B)
terminal 70.
4. Check continuity between microphone harness connector R109 (A) terminal 4 and ground.
Are the continuity test results as specified?
YES >> Replace the AV control unit. Refer to AV- 1 6 8 , "Removal and Installation".
NO >> Repair harness or connector.
3.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect microphone harness connector R109 and AV control unit harness connector M45.
3. Check continuity between microphone harness connector R109 (A) terminal 2 and AV control unit harness connector M45 (B)
terminal 71.
Does continuity exist?
YES >> Inspection End.
NO >> Repair harness or connector.
Signal name Connector Terminal Ignition switch
position Value (Approx.)
MIC power R109 4ON 5V
WKIA5796E
AB
Continuity
Connector Terminal Connector Terminal
R109 4 M45 70 Yes
A —Continuity
Connector Terminal
R109 4Ground No
ALNIA0441GB
AB
Continuity
Connector Terminal Connector Terminal
R109 2 M45 71 Yes
AWLIA1601ZZ
Revision: December 20092009 QX56

AV
STEERING SWITCHAV-105
< COMPONENT DIAGNOSIS > [AUDIO SYSTEM]
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STEERING SWITCH
DescriptionINFOID:0000000003776887
When one of the steering wheel audio control switches is pushed, the resistance in the steering wheel audio
control switch circuit changes depending on which button is pushed.
Diagnosis ProcedureINFOID:0000000003776888
1.CHECK STEERING WHEEL AUDI O CONTROL SWITCH RESISTANCE
1. Turn ignition switch OFF.
2. Disconnect steering wheel audio control switch connector M102.
3. Check resistance between steering switch connector terminals.
Do the steering wheel audio control switches check OK?
YES >> GO TO 2.
NO >> Replace steering wheel audio control switch. Refer to AV-178, "
Removal and Installation".
2.CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect AV control unit connector M42 and spiral cable con- nector M30.
3. Check continuity between AV control unit harness connector M42 (A) and spiral cable harness connector M30 (B).
4. Check continuity between AV control unit connector M42 (A) and ground.
Are the continuity results as specified?
YES >> GO TO 3.
NO >> Repair harness.
Terminal Signal name Condition Resistance
(Ω )
(Approx.)
16 17 Seek (down)
Depress switch. 165
Volume (down) Depress VOL down switch. 652
Phone/End Depress switch. 0
20 17 Seek (up)
Depress switch. 165
Volume (up) Depress VOL up switch. 652
Phone/Send Depress switch. 0
WKIA4457E
AB
Continuity
Connector Terminal Connector Terminal
M42 6
M30 24
Ye s
15 31
16 32
A —Continuity
Connector Terminal
M42 6
Ground No
15
16
ALNIA0332GB

AV
MICROPHONE SIGNAL CIRCUITAV-107
< COMPONENT DIAGNOSIS > [AUDIO SYSTEM]
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MICROPHONE SIGNAL CIRCUIT
DescriptionINFOID:0000000003776889
Voice signals are transmitted from the microphone to the AV control unit using the microphone signal circuits.
Diagnosis ProcedureINFOID:0000000003776890
1.CHECK HARNESS BETWEEN AV CONTROL UNIT AND MICROPHONE
1. Turn ignition switch OFF.
2. Disconnect AV control unit connector and microphone connec- tor.
3. Check continuity between AV control unit harness connector M45 (A) and microphone harness connector R109 (B).
4. Check continuity between AV control unit harness connector M45 (A) and ground.
Are the continuity test results as specified?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK MICROPHONE POWER SUPPLY
1. Connect AV control unit connector and microphone connector.
2. Turn ignition switch ON.
3. Check voltage between microphone harness connector R109 terminal 4 and ground.
Is voltage reading approx. 5 volts?
YES >> GO TO 3.
NO >> Replace AV control unit. Refer to AV-168, "
Removal and
Installation".
3.CHECK MICROPHONE SIGNAL
AB
Continuity
Connector Terminal Connector Terminal
M45 72
R109 1
Ye s
71 2
70 4
A —Continuity
Connector Terminal
M45 70
GroundNo
71
72
AWLIA1603ZZ
4 - Ground : Approx. 5V
WKIA5796E
Revision: December 20092009 QX56

AV-108
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
MICROPHONE SIGNAL CIRCUIT
Check signal between AV control
unit harness connector M45 termi-
nals 71 and 72.
Are voltage readings as specified?
YES >> Replace AV control unit. Refer to AV-168, "Removal and Installation".
NO >> Replace microphone. Refer to AV-186, "
Removal and Installation".
Connector(+) (-)
Reference signal
Terminal Terminal
M45 71 72 While speaking into MIC
ALNIA0423GB
PKIB5037J
Revision: December 20092009 QX56

AV
AV CONTROL UNITAV-113
< ECU DIAGNOSIS > [AUDIO SYSTEM]
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O P47
(W) 48
(R) AUX jack audio signal LH Input Ignition
switch ON When AUX mode is select-
ed
58
(O/L) 42
(W) Headphone LH audio sig-
nal
OutputIgnition
switch ON When DVD player is oper-
ating
59
(W/L) 43
(O) Headphone RH audio sig-
nal
OutputIgnition
switch ON When DVD player is oper-
ating
60 — Shield — —— —
62
(B) Ground A/C and AV switch assem-
bly ground —Ignition
switch ON —0
V
63
(B) 48
(R) AUX jack audio signal RH Input Ignition
switch ON When AUX mode is select-
ed
66
(Y) Ground Battery power supply Input Ignition
switch OFF —
Battery voltage
68
(Y) Ground Battery power supply Input Ignition
switch OFF —
Battery voltage
69
(V) Ground ACC power supply
InputIgnition
switch
ACC —
Battery voltage
70
(W) Ground MIC power
OutputIgnition
switch ON —5
V
72
(B) 71 MIC signal
InputIgnition
switch
ON ——
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
SKIB3609E
SKIB3609E
SKIB3609E
SKIB3609E
Revision: December 20092009 QX56

AV
MULTI AV SYSTEMAV-155
< SYMPTOM DIAGNOSIS > [AUDIO SYSTEM]
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SYMPTOM DIAGNOSIS
MULTI AV SYSTEM
Symptom TableINFOID:0000000003776898
AUDIO SYSTEM
NAVIGATION SYSTEM
HANDS-FREE PHONE SYSTEM
REAR VIEW MONITOR
Symptom Possible causeReference page
Inoperative • AV control unit power and ground circuit
• AV control unit •
AV- 6 8
•AV- 2 7
Steering switch does not operate • Steering switch
• AV control unit •
AV- 4 0•AV- 2 7
All speakers do not sound • AV control unit power and ground circuit
• BOSE speaker amp. ON signal
• BOSE speaker amp. power and ground circuit
• BOSE speaker amp.
• AV control unit •
AV- 6 8
•AV- 1 0 4
•AV- 7 0
•AV- 1 4 8
•AV- 1 0 9
One or several speakers do not sound • Front door speaker
• Front tweeter
• Center speaker
• Rear tweeter
• Rear door speaker
• Back door speaker
• Subwoofer •
AV- 8 4
•AV- 8 7
•AV- 9 0
•AV- 9 5
•AV- 9 2
•AV- 9 8
•AV- 1 0 1
Symptom Possible causeReference page
Inoperative • AV control unit power and ground circuit
• AV control unit •
AV- 6 8
•AV- 2 7
Steering switch does not operate • Steering switch
• AV control unit •
AV- 1 0 5•AV- 2 7
Voice activated control does not operate • Microphone
• Steering switch
• AV control unit •
AV- 1 0 7•AV- 1 0 5
•AV- 2 7
Symptom Possible causeReference page
Inoperative • AV control unit power and ground circuit
• AV control unit •
AV- 6 8
•AV- 2 7
Steering switch does not operate • Steering switch
• AV control unit •
AV- 1 0 5•AV- 2 7
Voice activated control does not operate • Microphone
• Steering switch
• AV control unit •
AV- 1 0 7•AV- 1 0 5
•AV- 2 7
Symptom Possible causeReference page
Inoperative • Rear view camera control unit power and ground circuit
• Reverse signal circuit
• Camera ON signal circuit
• Camera image signal circuit (rear view camera to rear
view camera control unit)
• Camera image signal circuit (rear view camera control unit to AV control unit)
• Rear view camera control unit •
AV- 7 2
•AV- 1 5 1
•AV- 1 5 1
•AV- 1 5 1
•AV- 1 5 1
•AV- 1 5 1
Revision: December 20092009 QX56

AV-156
< SYMPTOM DIAGNOSIS >[AUDIO SYSTEM]
MULTI AV SYSTEM
DVD PLAYER
Symptom
Possible causeReference page
DVD player inoperative • Power supply and ground circuits
• DVD player •
AV- 7 4
•AV- 1 5 3
No sound when playing a DVD • Audio signal circuits
• AV control unit
• DVD player •
AV- 8 4•AV- 6 8
•AV- 7 4
Video monitor is inoperative/does not display properly • Power supply and ground circuits
• Video out circuit
• DVD player
• Display monitor •
AV- 7 5•AV- 1 5 3
•AV- 7 4
•AV- 7 5
DVD remote control is inoperative/does not operate
properly • DVD player
• Rear audio remote control unit •
AV- 7 4
•AV- 1 0 9
Headphones inoperative • Headphone batteries
• Headphone audio signal circuits from AV control unit
• AV control unit
• Rear audio remote control unit •
AV- 1 5 3•AV- 1 0 9
•AV- 1 0 9
Revision: December 20092009 QX56

AV-186
< ON-VEHICLE REPAIR >[AUDIO SYSTEM]
MICROPHONE
MICROPHONE
Removal and InstallationINFOID:0000000003776919
REMOVAL
1. Remove the front roof console finisher. Refer to
INT-17,
"Removal and Installation".
2. Disconnect the Bluetooth microphone connector (A).
3. Detach the Bluetooth microphone (1) from the front roof console finisher and remove the Bluetooth microphone (1).
INSTALLATION
Installation is in the reverse order of removal.
ALNIA0275ZZALNIA0274ZZ
Revision: December 20092009 QX56