radio INFINITI QX56 2011 Factory User Guide

AV-40
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
AV Communication
When “AV communication” of “CAN Diag Support Monitor” is selected, the f\
ollowing function will be performed.
ECU IDENTIFICATION
The part number of AV control unit is displayed.
SELF DIAGNOSIS RESULT
 In CONSULT-III self-diagnosis, self-diagnosis results and error history are displayed collectively.
 The current malfunction indicates “CRNT”. The past malfunction indicates “PAST”.
 The timing is displayed as “0” if any of the e rror codes [U1000], [U1010], [U1300] and [U1310] is detected.
The counter increases by 1 if the condition is normal at the next ignition switch ON cycle.
Self-diagnosis Results Display Item
Data Monitor The diagnosis of vehicle signal that is input to the AV control unit can be performed.
Work Support Steering angle sensor can be adjusted.
Configuration Read and save the vehicle specification.
 Write the vehicle specification when replacing AV control unit.
Diagnosis mode Description
AV communication
AV&NAVI C/U
Displays the communication status from AV control unit to each unit as well as the error
counter.
AUDIO Displays the AV control unit communication status and the error counter.
Error item Description Possible malfunction factor/Action to take
CAN COMM CIRCUIT [U1000] CAN communication malfunction is detect-
ed.Refer to
AV- 11 8 , "
DiagnosisProcedure".
CONTROL UNIT (CAN) [U1010] CAN initial diagnosis malfunction is detect-
ed.
Replace the AV control unit if the malfunc-
tion occurs constantly.
Refer to AV- 2 1 2 , "
Removal and Installa-
tion".
CONTROL UNIT (AV) [U1310]
AV communication circuit initial diagnosis
malfunction is detected.
Cont Unit [U1200]
AV control unit malfunction is detected.
GYRO NO CONN [U1201]
G-SENSOR NO CONN [U1202]
CAN CONT [U1216]
BLUETOOTH MODULE [U1217]
SUB CPU CONN [U1228]
iPod CERTIFICATION [U1229]
Built-in AUDIO CONN [U122E]
HDD CONN [U1218]
AV control unit malfunction is detected. If the music box function has no mal-
functions, then there is a possibility of
the detection of a temporary malfunc-
tion.
 Replace the AV control unit if the mal- function occurs constantly.
Refer to AV- 2 1 2 , "
Removal and Installa-
tion".
HDD READ [U1219]
HDD WRITE [U121A]
HDD COMM [U121B]
HDD ACCESS [U121C]
GPS COMM [U1204]
GPS malfunction is detected. An intermittent error caused by strong
radio interference may be detected un-
less any symptom (GPS reception error,
etc.) occurs.
 Replace the AV control unit if the mal- function occurs constantly.
Refer to AV- 2 1 2 , "
Removal and Installa-
tion".
GPS ROM [U1205]
GPS RAM [U1206]
GPS RTC [U1207]
USB CONTROLLER [U1225] USB connection malfunction is detected.
Check that the connection to the USB con-
nector is normal.
Revision: 2010 May2011 QX56

AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)AV-41
< SYSTEM DESCRIPTION >
C
DE
F
G H
I
J
K L
M B A
O P
DSP CONN [U121D] AV control unit malfunction is detected. If a disc can be played, then there is a
possibility of the detection of a tempo-
rary malfunction.
 Replace the AV control unit if the mal- function occurs constantly.
Refer to AV- 2 1 2 , "
Removal and Installa-
tion".
DSP COMM [U121E]
DVD COMM [U1227] AV control unit malfunction is detected.  If DVD can be played, then there is a
possibility of the detection of a tempo-
rary malfunction.
 Replace the AV control unit if the mal- function occurs constantly.
Refer to AV- 2 1 2 , "
Removal and Installa-
tion".
CONFIG UNFINISH [U122A] The writing of configuration data is incom-
plete.Write configuration data with CONSULT-
III.
ST ANGLE SEN CALIB [U1232] Predictive course line center position ad-
justment of the steering angle sensor is in-
complete.Adjust the predictive course line center po-
sition of the steering angle sensor.
Refer to
BRC-64, "
Work Procedure".
FRONT DISP CONN [U1243] When either one of the following items are
detected:
 front display unit power supply and
ground circuits are malfunctioning.
 serial communication circuits between
AV control unit and front display unit are
malfunctioning.  Front display unit power supply and
ground circuits.
 Serial communication circuits between AV control unit and front display unit.
GPS ANTENNA CONN [U1244] GPS antenna connection malfunction is
detected.Check the connection of the GPS antenna
connector.
 AV COMM CIRCUIT [U1300]
 VIDEO DIST CONN [U1246] When either one of the following items are
detected:
 video distributor power supply and
ground circuits are malfunctioning.
 headrest display unit LH power supply and ground circuits are malfunctioning.
 AV communication circuits between AV
control unit and headrest display unit LH
are malfunctioning.
 location recognition signal circuit be-
tween headrest display unit LH and
ground is malfunctioning.  Video distributor power supply and
ground circuits.
 Headrest display unit LH power supply
and ground circuits.
 AV communication circuits between AV control unit and headrest display unit
LH.
 Location recognition signal circuit be- tween headrest display unit LH and
ground.
3RD DISP CONN [U125A] When either one of the following items are
detected:
 headrest display unit RH power supply
and ground circuits are malfunctioning.
 AV communication circuits between headrest display unit LH and headrest
display unit RH are malfunctioning.
 location recognition signal circuit be- tween headrest display unit RH and
ground is malfunctioning.  Headrest display unit RH power supply
and ground circuits.
 AV communication circuits between Headrest display unit LH and headrest
display unit RH.
 Location recognition signal circuit be- tween headrest display unit RH and
ground.
XM ANTENNA CONN [U1258] Satellite radio antenna connection mal-
function is detected.Satellite radio antenna disconnection.
USB OVERCURRENT [U1263] Detection of overcurrent in USB connect-
er.Check USB harness between the AV con-
trol unit and USB connector.
ANTENNA AMP TERMINAL
[OPEN or SHORT]
[U1264] Radio antenna amp. ON signal circuit mal-
function is detected.
Radio antenna amp. ON signal circuit be-
tween AV control unit and antenna amp.
AMP ON TERMINAL
[GND-SHORT or VB-SHORT]
[U1265] BOSE amp. ON signal circuit malfunction
is detected.
BOSE amp. ON signal circuit between AV
control unit and BOSE amp.
Error item Description Possible malfunction factor/Action to take
Revision: 2010 May2011 QX56

AV
AV CONTROL UNITAV-57
< ECU DIAGNOSIS INFORMATION >
C
DE
F
G H
I
J
K L
M B A
O P
Fail-SafeINFOID:0000000006216226
When the ambiance temperature becomes extremely low or extremely high, AV control unit displays the mes-
sage and limits the AV control unit function.
FAIL-SAFE CONDITIONS
When the ambiance temperature is −20 °C ( −4 °F) or lower, or when it is 70 °C (158 °F) or higher
Display
The messages displayed on fail-safe conditions are as shown below:
DESCRIPTION OF CONTROLS
Ability Operation Mode
There is an ability operation mode for Fail-safes due to low or high ambiance temperature.
If HDD data can be read, fail-safe is shown, then normal displays are displayed only for functions which can be
operated.
RELEASE CONDITIONS OF FAIL-SAFE
Fail-safe is released on following conditions and normal mode is restored.
When The Temperature of HDD Is Low or High
If the ambient temperature becomes out of fa il-safe condition range, normal mode is restored.
DTC IndexINFOID:0000000006216227
SELF-DIAGNOSIS RESULTS DISPLAY ITEM
158 GroundRGB digital image signal
(+)
OutputIgnition
switch ON Not connected connector. 1.3 V
159 Ground Satellite radio antenna sig-
nal InputIgnition
switch ON Not connected satellite an-
tenna connector.
5.0 V
Te r m i n a l
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal name Input/
Output
Fail-safe mode Display (display of the fail-safe condition)
When HDD temperature is low HDD system is experienci
ng problems due to extreme low temperature.
Normal operation will resume when temperature rises.
When HDD temperature is high HDD system is experienci
ng problems due to extreme high temperature.
Normal operation will resume when temperature drops.
Function When Fail-safe Function is activated
Air conditioner Operation Only multifunction switch (preset switch) can be operated.
Display
 LED of multifunction switch (preset switch) illuminates.
 Aimed temperature, blow angle, and flow rate are displayed in simplified mode.
Audio Operation Only ON/OFF and volume control operations by multifunction switch (preset switch) are possible.
Display No display (“Fail-safe mode” is displayed)
Camera Operation Image tone cannot be controlled.
Display Cannot be superimposed. (warning display, tone control display)
Hands-free phone Operation Cannot be operated.
Navigation Operation Cannot be operated.
Self diagnosis The display in simplified mode of fail-safe condition
CONSULT-III diagnosis Cannot be operated.
Revision: 2010 May2011 QX56

AV
U1204 AV CONTROL UNITAV-123
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
U1204 AV CONTROL UNIT
DescriptionINFOID:0000000006216255
An intermittent error caused by strong radio interfer ence may be detected unless any symptoms (GPS recep-
tion error, etc.) occur. Replace the AV control uni t if the malfunction occurs constantly. Refer to AV-212,
"Removal and Installation".
DTC LogicINFOID:0000000006216256
Diagnosis ProcedureINFOID:0000000006216257
1.PERFORM THE SELF-DIAGNOSIS
1. Delete the self-diagnosis results. Turn ignition switch OFF.
2. Turn ignition switch ON. Perform the self-diagnosis again.
3. Check that the DTC is detected again.
Is any DTC detected?
YES >> Replace AV control unit. Refer to AV-212, "Removal and Installation".
NO >> An intermittent error caused by strong radi o interference may be detected unless any symptom
(GPS reception error, etc.) occurs.
DTC Display contents of
CONSULT-III DTC detection condition Possible malfunction factor
U1204 GPS CONN
[U1204] GPS malfunction is detected. An intermittent erro
r caused by strong
radio interference may be detected
unless any symptom (GPS reception
error, etc.) occurs.
Replace the AV control unit if the mal-
function occurs constantly.
Refer to AV- 2 1 2 , "
Removal and In-
stallation".
Revision: 2010 May2011 QX56

AV-124
< DTC/CIRCUIT DIAGNOSIS >
U1205 AV CONTROL UNIT
U1205 AV CONTROL UNIT
DescriptionINFOID:0000000006216258
An intermittent error caused by strong radio interference may be detected unless any symptoms (GPS recep-
tion error, etc.) occur. Replace the AV control uni t if the malfunction occurs constantly. Refer to AV-212,
"Removal and Installation".
DTC LogicINFOID:0000000006216259
Diagnosis ProcedureINFOID:0000000006216260
1.PERFORM THE SELF-DIAGNOSIS
1. Delete the self-diagnosis results. Turn ignition switch OFF.
2. Turn ignition switch ON. Perform the self-diagnosis again.
3. Check that the DTC is detected again.
Is any DTC detected?
YES >> Replace AV control unit. Refer to AV-212, "Removal and Installation".
NO >> An intermittent error caused by strong radi o interference may be detected unless any symptom
(GPS reception error, etc.) occurs.
DTC Display contents of
CONSULT-III DTC detection condition Possible malfunction factor
U1205 GPS ROM
[U1205] GPS malfunction is detected. An intermittent erro
r caused by strong
radio interference may be detected
unless any symptom (GPS reception
error, etc.) occurs.
Replace the AV control unit if the mal-
function occurs constantly.
Refer to AV- 2 1 2 , "
Removal and In-
stallation".
Revision: 2010 May2011 QX56

AV
U1206 AV CONTROL UNITAV-125
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
U1206 AV CONTROL UNIT
DescriptionINFOID:0000000006216261
An intermittent error caused by strong radio interfer ence may be detected unless any symptoms (GPS recep-
tion error, etc.) occur. Replace the AV control uni t if the malfunction occurs constantly. Refer to AV-212,
"Removal and Installation".
DTC LogicINFOID:0000000006216262
Diagnosis ProcedureINFOID:0000000006216263
1.PERFORM THE SELF-DIAGNOSIS
1. Delete the self-diagnosis results. Turn ignition switch OFF.
2. Turn ignition switch ON. Perform the self-diagnosis again.
3. Check that the DTC is detected again.
Is any DTC detected?
YES >> Replace AV control unit. Refer to AV-212, "Removal and Installation".
NO >> An intermittent error caused by strong radi o interference may be detected unless any symptom
(GPS reception error, etc.) occurs.
DTC Display contents of
CONSULT-III DTC detection condition Possible malfunction factor
U1206 GPS RAM
[U1206] GPS malfunction is detected. An intermittent erro
r caused by strong
radio interference may be detected
unless any symptom (GPS reception
error, etc.) occurs.
Replace the AV control unit if the mal-
function occurs constantly.
Refer to AV- 2 1 2 , "
Removal and In-
stallation".
Revision: 2010 May2011 QX56

AV-126
< DTC/CIRCUIT DIAGNOSIS >
U1207 AV CONTROL UNIT
U1207 AV CONTROL UNIT
DescriptionINFOID:0000000006216264
An intermittent error caused by strong radio interference may be detected unless any symptoms (GPS recep-
tion error, etc.) occur. Replace the AV control uni t if the malfunction occurs constantly. Refer to AV-212,
"Removal and Installation".
DTC LogicINFOID:0000000006216265
Diagnosis ProcedureINFOID:0000000006216266
1.PERFORM THE SELF-DIAGNOSIS
1. Delete the self-diagnosis results. Turn ignition switch OFF.
2. Turn ignition switch ON. Perform the self-diagnosis again.
3. Check that the DTC is detected again.
Is any DTC detected?
YES >> Replace AV control unit. Refer to AV-212, "Removal and Installation".
NO >> An intermittent error caused by strong radi o interference may be detected unless any symptom
(GPS reception error, etc.) occurs.
DTC Display contents of
CONSULT-III DTC detection condition Possible malfunction factor
U1207 GPS RTC
[U1207] GPS malfunction is detected. An intermittent erro
r caused by strong
radio interference may be detected
unless any symptom (GPS reception
error, etc.) occurs.
Replace the AV control unit if the mal-
function occurs constantly.
Refer to AV- 2 1 2 , "
Removal and In-
stallation".
Revision: 2010 May2011 QX56

AV-146
< DTC/CIRCUIT DIAGNOSIS >
U1258 SATELLITE RADIO ANTENNA
U1258 SATELLITE RADIO ANTENNA
DTC LogicINFOID:0000000006226137
Diagnosis ProcedureINFOID:0000000006226138
1.SATELLITE RADIO ANTENNA CHECK
Visually check satellite radio antenna and antenna feeder.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair malfunctioning parts.
2.CHECK AV CONTROL UNIT VOLTAGE
1. Disconnect satellite radio antenna connector.
2. Turn ignition switch ON.
3. Check voltage between AV control unit and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace AV control unit. Refer to AV-212, "
Removal and Installation".
DTCDisplay contents of
CONSULT-III DTC Detection Condition Possible causes
U1258 XM ANTENNA CONN
[U1258] Satellite radio antenna connection malfunction is detect-
ed.
Satellite radio antenna disconnection.
(+)
(− ) Vo l ta g e
(Approx.)
AV c o n t r o l u n i t
Te r m i n a l159 Ground 5.0 V
Revision: 2010 May2011 QX56

AV
U1264 ANTENNA AMP.AV-149
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
U1264 ANTENNA AMP.
DTC LogicINFOID:0000000006216301
Diagnosis ProcedureINFOID:0000000006216302
1.CHECK CONTINUITY BETWEEN AV CONTROL UNIT AND ANTENNA AMP.
1. Turn ignition switch OFF.
2. Disconnect antenna amp. connector and AV control unit connector.
3. Check continuity between AV control unit harness connector and antenna amp. harness connector.
4. Check continuity between AV control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK VOLTAGE AV CONTROL UNIT
1. Connect AV control unit connector.
2. Turn ignition switch ON.
3. Check voltage between AV control unit harness connector and ground.
Is the inspection result normal?
YES >> Replace antenna amp. Refer to AV-224, "Removal and Installation".
NO >> Replace AV control unit. Refer to AV-212, "
Removal and Installation".
DTCDisplay contents of
CONSULT-III DTC detection condition Possible malfunction factor
U1264 ANTENNA AMP TER-
MINAL
[U1264] Radio antenna amp. ON circuit is open or shorted.
Check antenna amp. ON signal circuit
between the AV control unit and radio
antenna amp.
AV control unit Antenna amp.
Continuity
Connector Terminals Connector Terminals
M319 152 M313 1 Existed
AV control unit GroundContinuity
Connector Terminals
M319 152 Not existed
(+) (–)Vol tag e
(Approx.)
AV c o n t r o l u n i t
Connector Terminals M319 152 Ground 12.0 V
Revision: 2010 May2011 QX56

AV
MULTI AV SYSTEM SYMPTOMSAV-203
< SYMPTOM DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
RELATED TO STEERING SWITCH
RELATED TO USB
NOTE:
Check that there is no malfunction of USB equipment main body before performing a diagnosis.
iPod® is a trademark of Apple inc., registered in the U.S. and other countries.
RELATED TO DVD MODE
RELATED TO FRONT AUXILIARY INPUT
It does not change to “Driver's
Audio Stage” mode. —Mode change signal circuit malfunction.
Refer to
AV- 1 7 7 , "
Diagnosis Procedure".
Satellite radio is not received. There is malfunction in the CONSULT-III
self-diagnosis result.
Refer to
AV- 3 9 , "
CONSULT-III Function".Perform detected DTC diagnosis.
Refer to
AV- 5 7 , "DTC Index".
There is no malfunction in the CON-
SULT-III self-dia gnosis result.
Refer to AV- 3 9 , "
CONSULT-III Function".Perform the following inspection procedure.
1. Check satellite radio antenna mounting nut for
looseness.
NOTE:
Tightening torque: 6.5 N-m (0.66 kg-m, 58 in-lb)
2. Visually check for satellite radio antenna feeder.
AM/FM radio is not received. Other audio sounds are normal.  Antenna amp. ON signal circuit malfunction.
 Antenna feeder malfunction.
Symptoms Check items Probable malfunction location
Symptoms Probable malfunction location
None of the steering switch operations work. Steering switch ground circuit malfunction.
Refer to
AV- 1 9 7 , "
Diagnosis Procedure".
Only specified switch cannot be operated. Steering switch malfunction.
Replace steering wheel. Refer to
ST-33, "
Exploded View".
Steering switch's “SOURCE”, “MENU UP”, “MENU DOWN“,
“ ” and “ENTER” switches do not work. Steering switch signal A circuit malfunction.
Refer to
AV- 1 9 3 , "
Diagnosis Procedure".
Steering switch's “ ”, “VOL UP”, “VOL DOWN” and “ ”
switches do not work. Steering switch signal B circuit malfunction.
Refer to
AV- 1 9 5 , "
Diagnosis Procedure".
Symptoms Check items Possible malfunction location / Action to take
iPod
® or USB memory can not
be recognized. —
 USB harness malfunction.
 USB connector malfunction.
Symptoms Check items Probable malfunction location
The disk cannot be removed. — Disk eject signal circuit malfunction.
Refer to
AV-176, "
Diagnosis Procedure".
DVD image is not displayed. Front display unit, headrest display unit
LH and RH are not displayed.
Perform CONSULT-III self-diagnosis.
Refer to
AV- 3 9 , "
CONSULT-III Function".
Headrest display unit LH and RH are nor-
mal. Composite image signal circuit between AV control unit
and front display unit.
Refer to
AV-167, "
Diagnosis Procedure".
Front display unit is normal. Refer to “RELATED TO HEADREST DISPLAY UNIT
AND REAR AUXILIARY INPUT”
DVD sound is not heard. No sound from all speakers.
 Amp. ON signal circuit malfunction.
 BOSE amp. power supply and ground circuits mal-
function.
Sound is not heard from woofer.  Woofer power supply and ground circuit malfunction.
 Sound signal (woofer) circuit malfunction.
Sound is heard only from specific places. Sound signals circuit of suspect system.
Revision: 2010 May2011 QX56