2011 INFINITI QX56 radio

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 >
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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 >
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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

AV
NORMAL OPERATING CONDITIONAV-211
< SYMPTOM DIAGNOSIS >
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RELATED TO VOICE GUIDANCE
RELATED TO TRAFFIC INFORMATION
The part of the route that you
have already passed is deleted. A route is managed by sections between waypoints. If you
passed the first waypoint, the section between the starting
point and the waypoint is deleted. (It may not be deleted de-
pending on the area.)
This is not a malfunction.
An indirect route is suggested. If there are restrictions (such as one-way streets) on roads
close to the starting point or destination, the system may
suggest an indirect route.
Adjust the location of the starting of
the starting point or destination.
The system may suggest an indirect route because route
calculation does not take into consideration some areas
such as narrow stre ets (gray roads.) Reset the destination to a main or or-
dinary road, and recalculate the route.
The landmark information does
not correspond to the actual in-
formation. This may be caused by insufficient or incorrect map data.
Updated information will be included
in the next version of the data.
The suggested route does not
exactly connect to the starting
point, waypoints, or destina-
tion. There is no data for route calculation closes to these loca-
tions.
Set the starting point, waypoints and
destination on a main road, and per-
form route calculation.
Symptom Possible cause Possible solution
Symptom Possible cause Possible solution
Voice guidance is not available Voice guidance is only available at certain intersections
marked with? In some case, voice guidance is not avail-
able even when the vehicle should make a turn.
This is not a malfunction.
The vehicle has deviated from the suggested route. Go back to the suggested route or request
route calculation again
Voice guide is set to off. Turn on voice guidance.
Route guidance is set to off. Turn on voice guidance.
The guidance contact does not
correspond to the actual condi-
tion. The contact of voice guidance may vary, depending on
the types of intersections at which turn are made.
Follow all traffic rules and regulations.
Symptom Possible cause Possible solution
The traffic information is
not displayed The traffic information is not set to on. Set the traffic information to on.
You are in an area where traffic information is not avail-
able
Scroll to an area where traffic information is avail-
able
You have not subscribed to XM NavTraffic or, your sub-
scription to XM NavTraffic has expired. Check your subscription status of XM NavTraffic.
The map scale is set at a level where the display of icons
is impossible. Check that the map scale is set at a level in which
the display of icons is possible.
With the automatic de-
tour route search ON,
no detour route is set to
avoid congested areas. There is no faster route compared to the current route,
based on the road network and traffic information. The automatic detour search is not intended for
avoiding traffic jams. It searches for the fasted
rote taking into consideration such things as traffic
jams.
The route does not
avoid road section with
traffic information stat-
ing it is closed due to
road construction. The navigation system is designed not to avoid this
event because the actual period of closure may differ
from the declared roadwork period. Observe the actual road condition and follow the
instructions on road for detour when necessary. If
the road closure is for certain, use detour function
and set the detour distance to avoid the closed
road section.
Traffic information dis-
played differs from in-
formation from other
media (e.g. radio). Other media may use different information sources.
Observe the actual road conditions and regula-
tions. Always observe safe driving practices and
follow all traffic regulations.
Revision: 2010 May2011 QX56

AV
SATELLITE RADIO ANTENNAAV-225
< REMOVAL AND INSTALLATION >
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SATELLITE RADIO ANTENNA
Exploded ViewINFOID:0000000006217457
REMOVAL
DISASSEMBLY
Removal and InstallationINFOID:0000000006217458
REMOVAL
1. Pull headlining assembly (rear). Obtain a service area. Refer to INT-28, "Exploded View".
2. Disconnect antenna feeder connector.
3. Remove nut, and remove satellite radio antenna and the cover from the vehicle as a single unit.
INSTALLATION
Install in the reverse order of removal.
CAUTION:
If the satellite radio ante nna mounting nut is tightened looser than the specified torque, then this will
lower the sensitivity of the antenna. On the other hand, if the nut is tightened tighter than the specified
torque, then this will deform the roof panel.
Disassembly and AssemblyINFOID:0000000006362353
DISASSEMBLY
Insert cloth-covered driver into gaps between satel lite radio antenna and the cover, and remove the cover from
satellite radio antenna.
ASSEMBLY
Assemble in the reverse order of disassembly.
JSNIA3188ZZ
1. Satellite radio antenna
: Vehicle front
Refer to GI-4, "
Components" for symbols in the figure.
JSNIA3284ZZ
1. Satellite radio antenna
2. Cover
: Pawl
Revision: 2010 May2011 QX56

PRECAUTIONSBRC-7
< PRECAUTION > [WITH VDC]
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and tires installed on the vehicle are the specified si ze and parts. Brake performance and controllability may
be negatively affected when other parts than the specified are installed.
 Brake stopping distance may become longer and steering stability may be negatively affected, when tires in
different size and combination or other parts than the specified are used.
 When a radio (including wiring), antenna and antenna lead line are located near ABS actuator and electric
unit (control unit), a malfunction or improper operation ma y occur for the control of VDC function, TCS func-
tion, ABS function, EBD function, hill start assist func tion or brake limited slip differential (BLSD) function.
 When the following items are replaced by other parts than genuine parts or modified, ABS warning lamp, brake warning lamp and VDC warning lamp may turn ON, and the control may not operate normally for VDC
function, TCS function, ABS function, EB D function, hill start assist function or brake limited slip differential
(BLSD) function.
- Suspension component parts (shock absorber, spring, bushing and others)
- Tire and wheel (other than the specified size)
- Brake component parts (brake pad, disc rotor, brake caliper and others)
- Engine component parts (ECM, muffler and others)
- Body reinforcement component parts (rollover bar, tower bar and others)
 When suspension, tire and brake component parts are excessively worn or deteriorated and the vehicle is
driven, ABS warning lamp, brake warning lamp and VDC warning lamp may tu\
rn ON, and the control may
not operate normally for VDC function, TCS function, ABS function, EBD function, hill start assist function or
brake limited slip differential (BLSD) function.
 ABS warning lamp, brake warning lamp and VDC warning lamp may turn ON, when only front wheel or rear wheel is rotated using a free roller. This is not a ma lfunction, because it is caused by wheel speed difference
between wheel that is rotated and wheel that is not rota ted. In this case, perform self-diagnosis, check self-
diagnosis results, and erase memory.
 When power supply voltage is not normal, ABS warning lamp, brake warning lamp and VDC warning lamp
turn ON. ABS actuator and electric unit (control unit) st ops control for VDC function, TCS function, ABS func-
tion, EBD function, hill start assist function or brake limited slip differential (BLSD) function. Ordinary brake
operates. After power supply returns to normal, ABS warning lamp, brake warning lamp and VDC warning
lamp turn OFF. The control becomes operative for VD C function, TCS function, ABS function, EBD function,
hill start assist function or brake li mited slip differential (BLSD) function.
 VDC warning lamp may turn ON and VDC function or TCS function may not normally operate, when driving
on a special road the is extremely slanted (bank in a circ uit course). This is not a malfunction if the status
returns to normal for VDC function or TCS function after the engine is started again. In this case, perform
self-diagnosis, check self-diagnosis results, and erase memory.
 A malfunction in yaw rate/side/decel G sensor syste m may be detected when the vehicle sharply turns dur-
ing a spin turn, acceleration turn or drift driving while VDC function or TCS function are OFF (VDC OFF
switch is pressed and VDC OFF indicator lamp is in ON st atus). This is not a malfunction if the status returns
to normal for VDC function or TCS function after the engine is started again. In this case, perform self-diag-
nosis, check self-diagnosis results, and erase memory
Precaution for Harness RepairINFOID:0000000006222558
 Solder the repair part, and wrap it with tape. [Twisted wire fray must be 110 mm (4.33 in) or less.]
SKIB8766E
Revision: 2010 May2011 QX56

BRAKE PEDAL VIBRATION OR OPERATION SOUND OCCURS
BRC-131
< SYMPTOM DIAGNOSIS > [WITH VDC]
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BRAKE PEDAL VIBRATION OR OPERATION SOUND OCCURS
DescriptionINFOID:0000000006222665
 Brake pedal vibrates and motor sound from ABS actuat or and electric unit (control unit) occurs, when the
engine starts.
 Brake pedal vibrates during braking.
CAUTION:
Vibration may be felt during brake pedal is lightly de pressed (just placing a foot on it) in the following
conditions. This is normal.
 When shifting gears
 When driving on slippery road
 During cornering at high speed
 When passing over bumps or grooves [Approx. 50 mm (1.97 in) or more]
 When pulling away just after starting engine [at approx. 10 km/h (6.2 MPH) or higher]
Diagnosis ProcedureINFOID:0000000006222666
1.CHECK SYMPTON 1
Depress the brake pedal 10 times or more with the engine stopped and decrease the accumulator pressure to
check that there are pedal vibrations when the engine is started.
Do vibrations occur?
YES >> GO TO 2.
NO >> Check brake pedal. Refer to BR-21, "
Inspection and Adjustment".
2.CHECK SYMPTON 2
Depress the brake pedal 10 times or more with the engine stopped and decrease the accumulator pressure to
check that motor noise from ABS actuator and electr ic unit (control unit) occurs when the engine starts.
Does the operation sound occur?
YES >> GO TO 3.
NO >> Perform self-diagnosis for “ABS” with CONSULT-III.
3.CHECK SYMPTON 3
Check symptoms when electrical component (headlamps, etc.) switches are operated.
Does the symptom occur?
YES >> Check that radio (including wiring), antenna and antenna lead-in wires are not located near ABS actuator and electric unit (control unit). Move them if they are located near ABS actuator and elec-
tric unit (control unit).
NO >> Normal
Revision: 2010 May2011 QX56