2006 INFINITI QX56 Factory Service Manual

oil temperature steering fuel type width clutch cooling

Page 625 of 3383

INFINITI QX56 2006 Factory Service Manual AV-32
AUDIO
Revision: November 20092006 QX56
Trouble DiagnosisEKS00BIG
The majority of the audio troubles are the result of outside causes (bad CD, electromagnetic interference,
etc.). Check the inspe

AV-32
AUDIO
Revision: November 20092006 QX56
Trouble DiagnosisEKS00BIG
The majority of the audio troubles are the result of outside causes (bad CD, electromagnetic interference,
etc.). Check the inspection items below to diagnose the malfunction.
MALFUNCTION WITH RADIO AND CD
Before proceeding, confirm that other AV switch functions (except audio functions) operate. If not, refer to AV-
155, "Unable to Operate All of AV Switches (Unable to Start Self-Diagnosis)" .
FOR RADIO ONLY
SymptomPossible cause
Inoperative
Audio unit power circuit check. Refer to AV- 3 5 , "Power Supply Circuit
Inspection" .
Audio communication line check. Refer to AV-136, "Audio Communication
Line Check (Between Display Control Unit and Audio Unit)" .
AV switch check. Refer to AV- 4 3 , "AV Switch Check" .
If above check is OK, replace audio unit.
Steering switch does not operate
Steering switch check. Refer to AV-41, "Steering Switch Check" .
AV switch check. Refer to AV- 4 3 , "AV Switch Check" .
If above check is OK, replace audio unit.
Audio information is not displayed on screen
Display unit check. Refer to AV- 11 2 , "Self-Diagnosis Mode (DCU)" .
All speakers do not sound
Audio unit
BOSE speaker amp. power supply and ground circuit check. Refer to AV- 3 5 ,
"Power Supply Circuit Inspection" .
BOSE speaker amp. ON signal
BOSE speaker amp.
One or several speakers do not sound
Front door speaker check. Refer to AV-44, "Sound Is Not Heard From Front
Door Speaker or Front Tweeter" .
Rear door speaker check. Refer to AV- 4 8 , "Sound Is Not Heard From Rear
Door Speaker or Rear Door Tweeter" .
Subwoofer check. Refer to AV- 5 2 , "Sound Is Not Heard From Subwoofer" .
Center speaker check. Refer to AV- 5 1 , "Sound Is Not Heard From Center
Speaker" .
Poor sound
Audio unit
BOSE speaker amp.
Speaker
Noisy
Audio unit
BOSE speaker amp.
Electrical equipment (generator, bonding wire, etc.)
Symptom Possible cause
No sound
Audio unit
Antenna feeder, wiring or connections
Antenna amplifier, power supply, wiring or connections
Noisy
Audio unit
Audio unit case ground
Antenna feeder, wiring or connections
Antenna amplifier, power supply, wiring or connections
Noise prevention parts
Each electrical equipment
Wire harness of each piece of electrical equipment
All radio stations stored in memory are deleted
Audio unit power circuit check. Refer to AV-35, "Power Supply Cir-
cuit Inspection" .
Audio unit

Page 626 of 3383

INFINITI QX56 2006 Factory Service Manual AUDIOAV-33
C
DE
F
G H
I
J
L
M A
B
AV
Revision: November 2009 2006 QX56
NOTE:
1. The following noise results from variations in field strength, such as fading noise and multi-path noise, or
external no

AUDIOAV-33
C
DE
F
G H
I
J
L
M A
B
AV
Revision: November 2009 2006 QX56
NOTE:
1. The following noise results 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 the waves sent directly from the broadcast station arriving at the
antenna at a different time from the waves which reflect off mountains or buildings.
FOR CD ONLY
FOR SATELLITE RADIO TUNER (FACTORY INSTALLED) ONLY
NOTE:
Pressing the SAT button, the display unit will display `NO SAT' when the following conditions exist:
Loss of power to the satellite radio tuner (factory installed)
Open or short in the REQ1, TXD, or RXD circuits.
If the satellite antenna is disconnected or inoperative, the display unit will display ANTENNA.
Noise InspectionEKS00BIH
The vehicle itself can be a source of noise if noise prevention parts or electrical equipment is malfunctioning.
Check if noise is caused and/or changed by engine speed, ignition switch turned to each position, and opera-
tion of each piece of electrical equipment, and determine the cause.
NOTE:
The source of the noise can be found easily by listening to the noise while removing the fuses of electrical
components, one by one.
TYPE OF NOISE AND POSSIBLE CAUSE
Symptom Possible cause
CD cannot be inserted.
CD
Audio unit
CD cannot be ejected.
The CD cannot be played.
The sound skips, stops suddenly, or is distorted.
Symptom
Possible cause
Inoperative
Satellite radio tuner (factory installed) power and ground circuit inspection.
Refer to AV- 3 7 , "
Satellite Radio Tuner (Factory Installed) Power and Ground
Supply Circuit Inspection" .
Satellite radio tuner (factory installed) communication circuit inspection.
Refer to AV- 3 8 , "
Satellite Radio Tuner (Factory Installed) Communication
Circuit Inspection" .
If above check is OK, replace satellite radio tuner (factory installed). Refer
to AV- 5 8 , "
SATELLITE RADIO TUNER" .
Right or left channel does not sound
Satellite radio tuner (factory installed) right channel audio signal circuit
inspection. Refer to AV-41, "
Satellite Radio Tuner (Factory Installed) Right
Channel Audio Signal Circuit Inspection" .
Satellite radio tuner (factory installed) left channel audio signal circuit
inspection. Refer toAV- 4 0 , "
Satellite Radio Tuner (Factory Installed) Left
Channel Audio Signal Circuit Inspection" .
If above check is OK, replace satellite radio tuner (factory installed). Refer to
AV- 5 8 , "
SATELLITE RADIO TUNER" .
Poor reception
Location of vehicle. Make certain vehicle is in an open area.
Satellite radio antenna or antenna feeder. Refer to AV- 6 2 , "Location of
Antenna" .
Noisy
Satellite radio tuner (factory installed) ground.
Satellite radio tuner (factory installed) harness shield wires.
Electrical equipment (generator, bonding wire, etc.). Refer to AV-33, "Noise
Inspection" .

Page 627 of 3383

INFINITI QX56 2006 Factory Service Manual AV-34
AUDIO
Revision: November 20092006 QX56
Occurrence conditionPossible cause
Occurs only when engine is ON. A continuous growling noise occurs. The speed of
the noise varies with changes in the en

Page 628 of 3383

INFINITI QX56 2006 Factory Service Manual AUDIOAV-35
C
DE
F
G H
I
J
L
M A
B
AV
Revision: November 2009 2006 QX56
Power Supply Circuit InspectionEKS00BII
1. CHECK FUSES
Check that the following fuses are not blown.
OK or NG
OK >> GO TO 2.
NG >

Page 629 of 3383

INFINITI QX56 2006 Factory Service Manual AV-36
AUDIO
Revision: November 20092006 QX56
2. POWER SUPPLY CIRCUIT CHECK
1. Disconnect audio unit connector M43, subwoofer connector B72 and BOSE speaker amp. connector M112.
2. Check voltage betwe

Page 630 of 3383

INFINITI QX56 2006 Factory Service Manual AUDIOAV-37
C
DE
F
G H
I
J
L
M A
B
AV
Revision: November 2009 2006 QX56
Satellite Radio Tuner (Factory Installed) Power and Ground Supply Circuit
Inspection
EKS00GB3
1. CHECK FUSES
Check that the fol

Page 631 of 3383

INFINITI QX56 2006 Factory Service Manual AV-38
AUDIO
Revision: November 20092006 QX56
Satellite Radio Tuner (Factory Installed) Communication Circuit InspectionEKS00GB4
1. CHECK HARNESS - 1
1. Turn ignition switch OFF.
2. Disconnect satellit

Page 632 of 3383

INFINITI QX56 2006 Factory Service Manual AUDIOAV-39
C
DE
F
G H
I
J
L
M A
B
AV
Revision: November 2009 2006 QX56
4. CHECK REQ1 SIGNAL
1. Connect satellite radio tuner (factory installed) connector and audio unit connector.
2. Turn ignition sw

Load next 8 pages

Page: < prev 1-10 ... 593-600 601-608 609-616 617-624 625-632 633-640 641-648 649-656 657-664 ... 3384 next >

transmission oil dipstick handbrake mileage four wheel drive remove seats