2005 INFINITI QX4 audio

AV-126
NAVIGATION SYSTEM
Revision: October 20052005 QX56
3. CHECK SELF-DIAGNOSIS OF DCU
1. Replace NAVI control unit.
2. Connect NAVI control unit connector and display control unit connector.
3. Turn ignition switch ON.
4. Start self-diagnosis of DCU and check the self-diagnosis result.
OK or NG
OK >> Inspection End.
NG >> Replace display control unit. Refer to AV- 1 5 8 , "
Removal and Installation of Display Control Unit" .
Audio Communication Line Check (Between Display Control Unit and Audio
Unit)
EKS00BK8
1. CHECK POWER SUPPLY AND GROUND CIRCUIT
1. Check power supply and ground circuit for audio unit. Refer to AV- 3 0 , "
Power Supply Circuit Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Check the malfunctioning parts.
2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect audio unit connector M45 and display control unit connector M95.
3. Check continuity between audio unit and display control unit.
4. Check continuity between display control unit and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
Te r m i n a l s
Continuity Display control unit Audio unit
ConnectorTerminal
(Wire color)ConnectorTe r m i n a l
(Wire color)
M9540 (O/L)
M4565 (O/L)
Ye s
42 (W/L) 66 (W/L)
Te r m i n a l s
Continuity Display control unit
—
Connector Terminal (Wire color)
M9540 (O/L)
Ground No
42 (W/L)
WKIA1192E

NAVIGATION SYSTEM
AV-127
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Revision: October 20052005 QX56
3. CHECK 1: AUDIO-TX COMMUNICATION SIGNAL
1. Connect display control unit connector.
2. Turn ignition switch ON.
3. Check voltage between display control unit harness connector
M95 terminal 42 (W/L) and ground.
OK or NG
OK >> GO TO 4.
NG >> Replace display control unit. Refer to AV-158, "
Removal
and Installation of Display Control Unit" .
4. CHECK 2: AUDIO-RX COMMUNICATION SIGNAL
1. Turn ignition switch OFF.
2. Disconnect display control unit connector M95.
3. Connect audio unit connector M45.
4. Turn ignition switch ON.
5. Check voltage between audio unit harness connector M45 ter-
minal 65 (O/L) and ground.
OK or NG
OK >> GO TO 5.
NG >> Replace audio unit. Refer to AV- 4 5 , "
Removal and
Installation for Audio Unit" .
5. CHECK 3: AUDIO-TX COMMUNICATION SIGNAL
1. Turn ignition switch OFF.
2. Connect display control unit connector M95.
3. Turn ignition switch ON.
4. Check signal between display control unit harness connector
M95 terminal 40 (O/L) and ground with CONSULT-II or oscillo-
scope.
OK or NG
OK >> GO TO 6.
NG >> Replace display control unit. Refer to AV-158, "
Removal
and Installation of Display Control Unit" . Approx. 3.5V or more.
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Approx. 3.5V or more.
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40 (O/L) - Ground : Refer to AV- 9 2 , "Terminals
and Reference Value for Dis-
play Control unit" .
SKIA4447E

AV-128
NAVIGATION SYSTEM
Revision: October 20052005 QX56
6. CHECK 4: AUDIO-RX COMMUNICATION SIGNAL
1. Turn ignition switch ON.
2. Check signal between display control unit harness connector
M95 terminal 42 (W/L) and ground with CONSULT-II or oscillo-
scope.
OK or NG
OK >> Inspection End.
NG >> Replace audio unit. Refer to AV- 4 5 , "
Removal and
Installation for Audio Unit" .
Display Communication Line Check (Between Display Control Unit and Display
Unit)
EKS00BK9
1. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display unit connector M93 and display control unit connector M95.
3. Check continuity between display control unit and display unit.
4. Check continuity between display control unit and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2. CHECK 1: COMMUNICATION SIGNAL (DCU–DSP)
1. Connect display unit connector.
2. Turn ignition switch ON.
3. Check voltage between display unit harness connector M93 ter-
minal 11 (B/W) and ground.
OK or NG
OK >> GO TO 3.
NG >> Replace display unit. Refer to AV- 1 5 8 , "
Removal and
Installation of Display Unit" . 42 (W/L) - Ground : Refer to AV-92, "
Te r m i na l s
and Reference Value for Dis-
play Control unit" .
SKIA4448E
Te r m i n a l s
Continuity Display control unit Display unit
ConnectorTerminal
(Wire color)ConnectorTe r m i n a l
(Wire color)
M9536 (B/W)
M9311 (B/W)
Ye s
38 (L) 22 (L)
Te r m i n a l s
Continuity Display control unit
—
Connector Terminal (Wire color)
M9536 (B/W)
Ground No
38 (L)
WKIA2019E
Approx. 3.5V or more.
WKIA1377E

AV-132
NAVIGATION SYSTEM
Revision: October 20052005 QX56
2. CHECK 2: DVD-ROM
1. Check DVD-ROM for dirt, scratches and warpage.
OK or NG
OK >> GO TO 3.
NG >> Replace DVD-ROM map.
3. CHECK 3: DVD-ROM
1. Insert same DVD-ROM to make sure same diagnosis result is found as last self-diagnosis.
OK or NG
OK >> Replace NAVI control unit. Refer to AV- 1 5 7 , "Removal and Installation of NAVI Control Unit" .
NG >> Replace DVD-ROM map.
If Connection Between NAVI Control Unit and GPS Antenna is MalfunctioningEKS00BKE
1. CHECK GPS ANTENNA
1. Check cable for GPS antenna for damage.
OK or NG
OK >> GO TO 2.
NG >> Replace GPS antenna. Refer to AV- 1 5 7 , "
Removal and Installation of GPS Antenna" .
2. CHECK BY REPLACEMENT OF GPS ANTENNA
1. Replace other functional GPS antenna to try self-diagnosis again.
Result of self-diagnosis; Found same result?
YES >> Replace NAVI control unit. Refer to AV- 1 5 7 , "Removal and Installation of NAVI Control Unit" .
NO >> Replace GPS antenna. Refer to AV- 1 5 7 , "
Removal and Installation of GPS Antenna" .
Operating Screen for Audio and A/C is Not Displayed When Showing NAVI
Screen
EKS00BKF
1. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit connector M95 and display unit connector M93.
3. Check continuity between display control unit harness connector M95 terminal 49, 51 (B), 53 (W), 55 (R)
and display unit harness connector M93 terminal 21, 9 (B), 20 (W), 8 (R).
4. Check continuity between display control unit harness connector
M95 terminal 49, 51 (B), 53 (W), 55 (R) and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness.Continuity should exist.
Continuity should not exist.
WKIA1965E

AV-142
NAVIGATION SYSTEM
Revision: October 20052005 QX56
Guide Sound is Not HeardEKS00BKN
1. CHECK VOICE GUIDE SETTING

While driving in the dark pink route, voice guide does not operate. (note)

Is volume setting not switched ON?
NOTE:
Voice guide is only available at intersections that satisfy certain conditions (indicated by
on the map). There-
fore, guidance may not be given even when the route on the map changes direction.
Ye s o r N o
YES >> GO TO 2.
NO >> Switch the setting ON and turn the volume up.
2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect NAVI control unit connector B151 and audio unit connector M45.
3. Check continuity between NAVI control unit and audio unit.
4. Check continuity between NAVI control unit and ground.
Ok or NG
OK >> GO TO 3.
NG >> Repair harness.
3. CHECK VOICE GUIDE
1. Connect NAVI control unit connector and audio unit connector.
2. Turn ignition switch ON.
3. Check signal between NAVI control unit harness connector
B151 terminal 7 (B) and 8 (W) with CONSULT-II or oscilloscope.
OK or NG
OK >> Replace audio unit. Refer to AV- 4 5 , "Removal and
Installation for Audio Unit" .
NG >> Replace NAVI control unit. Refer to AV- 1 5 7 , "
Removal
and Installation of NAVI Control Unit" .
Te r m i n a l s
Continuity NAVI control unit Audio unit
ConnectorTerminal
(Wire color)ConnectorTe r m i n a l
(Wire color)
B1517 (B)
M4571 (B)
Ye s
8 (W) 69 (W)
Te r m i n a l s
Continuity NAVI control unit
—
Connector Terminal (Wire color)
B1517 (B)
Ground No
8 (W)
WKIA1193E
7 (B) – 8 (W) : Refer to AV-90, "Terminals
and Reference Value for
NAVI Control unit" .
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NAVIGATION SYSTEM
AV-145
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Revision: October 20052005 QX56
3. CHECK CAN COMMUNICATION LINE
Check CAN communication line. Refer to AV- 1 3 1 , "
CAN Communication Line Check" .
OK or NG
OK >> Replace display control unit. Refer to AV-158, "Removal and Installation of Display Control Unit" .
NG >> After filling out CAN DIAG SUPPORT MONITOR check sheet, GO TO LAN-5, "
CAN COMMUNI-
CATION" .
Unable to Operate All of AV Switches (Unable to Start Self-Diagnosis)EKS00BKV
1. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check power supply and ground circuit for AV switch. Refer to AV-120, "
Power Supply and Ground Circuit
Check for AV Switch" .
OK or NG
OK >> GO TO 2.
NG >> Check the malfunctioning parts.
2. AV SWITCH SELF-DIAGNOSIS
AV switch self-diagnosis. Refer to AV- 11 5 , "
AV Switch Self-Diagnosis Function" .
OK or NG
OK >> GO TO 3.
NG >> Check the malfunctioning parts.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check power supply and ground circuit for display control unit. Refer to AV- 11 7 , "
Power Supply and Ground
Circuit Check for Display Control Unit" .
OK or NG
OK >> GO TO 4.
NG >> Check the malfunctioning parts.
4. CHECK COMMUNICATION LINE
Check communication line. Refer to AV- 1 3 0 , "
AV Communication Line Check (Between Display Control Unit
and AV Switch)" .
OK or NG
OK >> Replace AV switch. Refer to AV-158, "Removal and Installation of AV Switch" .
NG >> Replace display control unit. Refer to AV-158, "
Removal and Installation of Display Control Unit" .
Audio Does Not WorkEKS00BKW
Refer to AV-28, "Trouble Diagnosis" .
Navigation System Does Not ActivateEKS00BKX
1. POWER SUPPLY AND GROUND CIRCUIT CHECK
Check power supply and ground circuit for NAVI control unit. Refer to AV- 11 6 , "
Power Supply and Ground Cir-
cuit Check for NAVI Control Unit" .
OK or NG
OK >> Replace NAVI control unit. Refer to AV-157, "Removal and Installation of NAVI Control Unit" .
NG >> Check the malfunctioning parts.

AV-148
NAVIGATION SYSTEM
Revision: October 20052005 QX56
Example of Symptoms Judged Not MalfunctionEKS00BL3
BASIC OPERATION
VEHICLE MARK
Symptom Cause Remedy
No image is shown. Display brightness adjustment is set fully to
DARK side.Adjust the display brightness.
No guide sound is heard.
Audio guide volume is too low or
too high.Volume control is set to OFF, MIN or MAX. Adjust the audio guide volume.
Audio guidance is not available while the vehicle
is driving on a dark pink route.System is not malfunctioning.
Screen is too dark.
Motion of the image is too slow.Temperature inside the vehicle is low. Wait until the temperature inside the vehicle
reaches the proper temperature.
Small black or bright spots appear
on the screen.Symptom peculiar to a liquid crystal display (dis-
play unit).System is not malfunction.
Symptom Cause Remedy
Map screen and BIRDVIEW™
Name of the place varies with the
screen.Some thinning of the character data is done to
prevent the display becoming to complex. In
some cases and in some locations, the display
contents may differ.
The same place name, street name, etc. may not
be displayed every time on account of the data
processing.System is not malfunctioning.
Vehicle mark is not positioned cor-
rectly.Vehicle is transferred by ferry or by towing after its
ignition switch is turned to OFF.Drive the vehicle for a while in the GPS sat-
ellite signal receiving condition.
Screen will not switch to nighttime
mode after the lighting switch is
turned ON.The daytime screen is selected by the “SWITCH
SCREENS” when the last time the screen dim-
ming setting is done.
Switching between daytime/nighttime screen may
be inhibited by the automatic illumination adjust-
ment function.Perform screen dimming and select the
nighttime screen by “SWITCH SCREENS”.
Map screen will not scroll in accor-
dance with the vehicle travel.Current location is not displayed. Press “MAP” button to display the current
location.
Vehicle mark will not be shown. Current location is not displayed. Press “MAP” button to display the current
location.
Accuracy indicator (GPS satellite
mark) on the map screen stays
gray.GPS satellite signal is intercepted because the
vehicle is in or behind a building.Move the vehicle out to an open space.
GPS satellite signal cannot be received because
an obstacle is placed on top of the instrument
panel.Do not place anything in the center on top of
the display.
GPS satellites are not visible from current loca-
tion.Wait until GPS satellites are visible by mov-
ing the vehicle.
Vehicle location accuracy is low. Accuracy indicator (GPS satellite mark) on the
map screen stays gray.Current location is not determined.
Vehicle speed setting by the vehicle speed pulse
has been deviated (advanced or retarded) from
the actual vehicle speed because tire chain is fit-
ted or the system has been used on another vehi-
cle.Drive the vehicle for a while [for approx. 30
minutes at approx. 30 km/h (19 MPH)] and
the deviation will be automatically adjusted.
If advancement or retard still occur, perform
the distance adjustment by CONFIRMA-
TION/ADJUSTMENT mode of diagnosis
function.
Map data has error or omission. (Vehicle mark is
always deviated to the same position.)As a rule, an updated map DVD–ROM will
be released once a year.

NAVIGATION SYSTEM
AV-157
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Revision: October 20052005 QX56
Removal and Installation of NAVI Control UnitEKS00BL5
CAUTION:
To avoid damage, eject map DVD-ROM before removing the NAVI control unit.
1. Slide front seat RH fully forward.
2. Remove NAVI control unit kick shield.
3. Disconnect connectors.
4. Remove screws and remove NAVI control unit.
5. Remove screws and brackets from NAVI control unit.
6. Installation is in the reverse order of removal.
Removal and Installation of GPS AntennaEKS00BL6
1. Remove defroster grille.
2. Remove screws.
3. Remove center console. Refer to IP-15, "
Center Console" .
4. Disconnect GPS antenna connector and remove GPS antenna
and feeder assembly out the top.
5. Installation is in the reverse order of removal.
Removal and Installation of Steering Wheel SwitchEKS00BL7
Refer to AV-47, "Removal and Installation of Steering Wheel Audio Control Switches" .
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