2007 INFINITI FX35 Service Manual

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Page 641 of 4366

INFINITI FX35 2007 Service Manual AUDIO AV-35
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Revision: 2006 July 2007 FX35/FX45
A/C and AV Switch Self-Diagnosis FunctionNKS003AT
It can check ON/OFF operation of each switch in the A/C and AV

Page 642 of 4366

INFINITI FX35 2007 Service Manual AV-36
AUDIO
Revision: 2006 July 2007 FX35/FX45
Trouble DiagnosisNKS003LC
The majority of the audio malfunctions are the result of outside causes (bad CD, electromagnetic interfer-
ence, etc.). Check

AV-36
AUDIO
Revision: 2006 July 2007 FX35/FX45
Trouble DiagnosisNKS003LC
The majority of the audio malfunctions are the result of outside causes (bad CD, electromagnetic interfer-
ence, etc.). Check the symptoms below to diagnose the malfunction.
The vehicle itself can be a source of noise if noise prevention parts or electrical equipment is malfunction-
ing. Check if noise is caused and/or changed by engine speed, ignition switch turned to each position, and
operation of each piece of electrical equipment, and then determine the cause.
Make sure that other operation except audio system can be performed with A/C and AV switch. If these
operations are inoperative with A/C and AV switch, refer to AV- 8 4 , "
Unable to Operate System with A/C
and AV Switch" (Without navigation system), or AV- 1 3 9 , "Unable to Operate System with A/C and AV
Switch" (With navigation system).
Refer to "SERVICE BULLETIN ITB04-055" for the diagnosis of satellite radio.
NOTE:
Noise resulting from variations in field strength, such as fading noise and multi-path noise, or external noise
from trains and other sources. It is not a malfunction.
Fading noise: This noise occurs because of variations in the field strength in a narrow range due to moun-
tains or buildings blocking the signal.
Multi-path noise: This noise results from a time difference between the broadcast waves directly from the
station arriving at the antenna and the waves reflected by mountains or buildings.
Symptom Possible malfunction location
Audio system does not work properly.
Audio unit power supply circuit
Communication signal circuit between audio unit and display control unit
A/C and AV switch
Audio unit
No sound can be heard from all speakers.
BOSE speaker amp. power supply and ground circuit
BOSE speaker amp. ON signal circuit
Audio unit
BOSE speaker amp.
No sound can be heard from one or several speakers.
Audio signal circuit between audio unit and BOSE speaker amp.
Audio signal circuit between BOSE speaker amp. and speaker
Speaker
Tw e e te r
Audio unit
BOSE speaker amp.
No sound can be heard from woofer.
Audio signal circuit between BOSE speaker amp. and woofer
Woofer
BOSE speaker amp.
No sound can be heard from radio or noise is caught.
Antenna amp. ON signal circuit
Antenna feeder
Roof antenna
Antenna amp.
Audio unit
Audio steering switch does not operate properly.
Remote control signal circuit between audio steering switch and A/C and
AV switch
Audio steering switch
Spiral cable
TEL adapter unit (With telephone system)
A/C and AV switch

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INFINITI FX35 2007 Service Manual AUDIO AV-37
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Revision: 2006 July 2007 FX35/FX45
Power Supply Circuit InspectionNKS003AW
1. CHECK FUSE
Make sure that the following fuses of the BOSE speaker amp

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INFINITI FX35 2007 Service Manual AV-38
AUDIO
Revision: 2006 July 2007 FX35/FX45
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BOSE speaker amp. and woofer connectors.
3. Check continuity between BOSE speaker am

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INFINITI FX35 2007 Service Manual AUDIO AV-39
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Revision: 2006 July 2007 FX35/FX45
3. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect A/C and AV switch and TEL adapter unit connectors.

Page 646 of 4366

INFINITI FX35 2007 Service Manual AV-40
AUDIO
Revision: 2006 July 2007 FX35/FX45
6. CHECK AUDIO STEERING WHEEL SWITCH RESISTANCE
Check resistance audio steering wheel switch terminals.
*1: Without telephone system
*2: With telephon

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INFINITI FX35 2007 Service Manual AUDIO AV-41
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Revision: 2006 July 2007 FX35/FX45
2. CHECK AMP. ON SIGNAL
1. Connect audio unit connector.
2. Turn ignition switch ACC.
3. Check voltage between

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INFINITI FX35 2007 Service Manual AV-42
AUDIO
Revision: 2006 July 2007 FX35/FX45
3. CHECK VEHICLE SPEED SIGNAL
1. Connect audio unit and unified meter and A/C amp. connectors.
2. Start engine and drive vehicle at more than 40 km/h

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