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AV-36
AUDIO
Revision: 2006 December 2006 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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AV-42
AUDIO
Revision: 2006 December 2006 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 (25 MPH).
3. Check the signal between audio unit harness connector M60 terminal 22 and ground with CONSULT-II or oscilloscope.
OK or NG
OK >> INSPECTION END (System is OK.)
NG >> Replace unified meter and A/C amp.
Locking CD Auto-Changer MechanismNKS003B1
CAUTION:
Prior to removing a malfunctioning CD auto-changer unit that will be shipped for repair, the
changer mechanism MUST BE LOCKED to prevent the mechanism from being damaged during
shipping.
If a CD is jammed or unable to be removed from the unit, do NOT lock the changer mechanism. If
the unit is to be shipped for repair, carefully package the unit to prevent vibration and shock.
DAMPER LOCK PROCEDURE
1. Eject and remove any CDs from the audio unit.
2. Turn ignition switch OFF. Wait until audio unit display is off and mechanism stops moving (mechanism sound stops).
3. Press any one of the disc selection buttons once. When a display shows on the audio unit, press the same disc selection button again within 5 seconds.
The changer mechanism will lock itself within 10 seconds.
4. After mechanism stops moving (mechanism sound stops), open the driver and passenger window, and then disconnect negative battery cable.
NOTE:
After installing a new or remanufactured audio unit, switching the audio unit ON will automatically unlock the
mechanism. A special unlocking procedure is not required.
Terminal Condition Reference
signal
(+) (–)
22 Ground When vehicle speed is
approx. 40 km/h (25 MPH)
SKIA6809E
ELF1080D
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AUDIO AV-43
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AV
Revision: 2006 December 2006 FX35/FX45
Removal and Installation of Audio UnitNKS003B2
REMOVAL
1. Perform damper lock operation. Refer to AV- 4 2 , "Locking CD Auto-Changer Mechanism" .
2. Remove cluster lid C. Refer to IP-10, "
INSTRUMENT PANEL ASSEMBLY" .
3. Remove screws (6) with power tool, and remove audio unit with display and unified meter and A/C amp. from instrument panel.
4. Remove screws and remove audio unit.
INSTALLATION
Installation is the reverse order of removal.
Disassembly and Assembly for Audio UnitNKS003M0
DISASSEMBLY
Remove audio unit screws (8) and display screws (4) and unified meter and A/C amp. screws (2) with power
tool and remove brackets.
ASSEMBLY
Assembly is the reverse order of disassembly.
NOTE:
Use appropriate screws for each, as screws for audio unit and display unit are different from that for unified
meter and A/C amp.
SKIA5800E
1. Display 2. Bracket (LH) 3. Audio unit
4. Screw (For metal) 5. Screw (For plastic) 6. Bracket (RH)
7. Unified meter and A/C amp.
SKIB8678E
Page 654 of 4462
AV-48
ANTENNA
Revision: 2006 December 2006 FX35/FX45
ANTENNAPFP:28200
System DescriptionNKS003LP
With the ignition switch in ACC or ON, power is supplied
through 10A fuse [No. 6, located in the fuse block (J/B)]
to audio unit terminal 10.
Ground is supplied through the case of the antenna amp.
When the radio switch is turned ON, antenna signal is supplied
through audio unit terminal 5
to the antenna amp.
Then the antenna amp. is activated.
The amplified radio signals are supplied to the audio unit through the antenna amp.
Page 682 of 4462

AV-76
INTEGRATED DISPLAY SYSTEM
Revision: 2006 December 2006 FX35/FX45
Self-Diagnosis Mode (DCU)NKS003JD
OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system OFF.
3. While pressing the “4” button, turn the volume control dial clock- wise or counterclockwise for 30 clicks or more. (When the self-
diagnosis mode is started, a short beep will be heard.)
Shifting from current screen to previous screen is performed
by pressing “BACK” button.
4. The initial trouble diagnosis screen will be shown, and items “Self Diagnosis (DCU)”, “Confirmation/Adjustment” and “CAN
DIAG SUPPORT MONITOR” will become selective.
5. Perform self-diagnosis by selecting the “Self Diagnosis (DCU)”.
Self-diagnosis screen is displayed, and then self-diagnosis
starts.
The bar graph visible below self-diagnosis screen displays
progress of the diagnosis.
6. When the self-diagnosis completes, optional part confirmation screen will be shown.
When connection of an optional part is judged error, a screen
to check if the optional part is actually fitted on the vehicle or
not will be shown. When fitted, select the switch of the part on
the screen and press “End”. Then the “SELF DIAGNOSIS”
screen will be shown.
When the optional part is connected normally, the switch for
the part will not appear on the screen.
SKIB8743E
SKIB7871E
SKIA4208E
SKIB8673E
Page 685 of 4462
INTEGRATED DISPLAY SYSTEM AV-79
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AV
Revision: 2006 December 2006 FX35/FX45
Confirmation/Adjustment ModeNKS003JE
OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system OFF.
3. While pressing the “4” button, turn the volume control dial clock- wise or counterclockwise for 30 clicks or more. (When the self-
diagnosis mode is started, a short beep will be heard.)
Shifting from current screen to previous screen is performed
by pressing “BACK” button.
4. The initial trouble diagnosis screen will be shown, and items “Self Diagnosis (DCU)”, “Confirmation/Adjustment” and “CAN
DIAG SUPPORT MONITOR” will become selective.
5. Select “Confirmation/Adjustment”.
6. Each diagnosis is shown by selecting each screen switch on Confirmation/Adjustment screen.
SKIB8743E
SKIB7871E
SKIB7873E
Page 687 of 4462

INTEGRATED DISPLAY SYSTEM AV-81
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AV
Revision: 2006 December 2006 FX35/FX45
AUTO CLIMATE CONTROL
Refer to AT C - 5 2 , "Self-diagnosis Function" .
CAN DIAG SUPPORT MONITORNKS003JF
OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system OFF.
3. While pressing the “4” button, turn the volume control dial clock- wise or counterclockwise for 30 clicks or more. (When the self-
diagnosis mode is started, a short beep will be heard.)
Shifting from current screen to previous screen is performed
by pressing “BACK” button.
4. The initial trouble diagnosis screen will be shown, and items “Self Diagnosis (DCU)”, “Confirmation/Adjustment” and “CAN
DIAG SUPPORT MONITOR” will become selective.
5. Select “CAN DIAG SUPPORT MONITOR”.
6. The transmitting/receiving of CAN communication can be moni- tored.
NOTE:
Counter shows the status of CAN communication.
SKIB8743E
SKIB7871E
Item Content Error counter
(Reference value)
CAN_COMM OK/NG 0 - 50
CAN_CIRC_1 OK/UNKWN 0 - 50
CAN_CIRC_2 OK/UNKWN 0 - 50
CAN_CIRC_3 OK/UNKWN 0 - 50
CAN_CIRC_4 OK/UNKWN 0 - 50
CAN_CIRC_5 OK/UNKWN 0 - 50
CAN_CIRC_6 OK/UNKWN 0 - 50
CAN_CIRC_7 OK/UNKWN 0 - 50
CAN_CIRC_8 OK/UNKWN 0 - 50
CAN_CIRC_9 OK/UNKWN 0 - 50
SKIA4288E
Page 729 of 4462

NAVIGATION SYSTEM AV-123
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AV
Revision: 2006 December 2006 FX35/FX45
Self-Diagnosis Mode (DCU)NKS003KF
OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system OFF.
3. While pressing the “4” button, turn the volume control dial clock- wise or counterclockwise for 30 clicks or more. (When the self-
diagnosis mode is started, a short beep will be heard.)
Shifting from current screen to previous screen is performed
by pressing “BACK” button.
4. The initial trouble diagnosis screen will be shown, and items “Self Diagnosis (DCU)”, “Self Diagnosis (NAVI)”, “Confirmation/
Adjustment” and “CAN DIAG SUPPORT MONITOR” will
become selective.
5. Perform self-diagnosis by selecting the “Self Diagnosis (DCU)”.
Self-diagnosis screen is displayed, and then self-diagnosis
starts.
The bar graph visible below self-diagnosis screen displays
progress of the diagnosis.
6. When the self-diagnosis completes, optional part confirmation screen will be shown.
When connection of an optional part is judged error, a screen
to check if the optional part is actually fitted on the vehicle or
not will be shown. When fitted, select the switch of the part on
the screen and press “End”. Then the “SELF DIAGNOSIS”
screen will be shown.
When the optional part is connected normally, the switch for
the part will not appear on the screen.
SKIB8642E
SKIB7874E
SKIA4208E
SKIB8673E