2011 INFINITI QX56 ignition

AV
SONAR CONTROL UNIT (WITH AROUND VIEW MONITOR)
AV-77
< ECU DIAGNOSIS INFORMATION >
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Fail-SafeINFOID:0000000006216234
 Sonar control unit has diagnosis function which can detect corner sensor malfunction and sensor harness
disconnection.
 It transmits the malfunction status to around view moni tor control unit and informs the malfunction to the user
by displaying continuously red sonar indicator.
DTC IndexINFOID:0000000006216235
NOTE:
“TIME” means the following.
 0: Means detected malfunction at present. (From ma lfunction detection to turning ignition switch OFF)
 1–39: Means detected malfunction in past.
20
(LG) — AV communication (L)
Input/
Output —— —
24
(B) Ground Ground — Ignition
switch
ON —0 V
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
Output
DTC Display item Malfunction is detected when... Reference
B2700 CORNER SENSOR [FL]
[B2700]
Corner sensor front LH is malfunctioning.
AV- 1 5 3 , "
DTC Logic"
B2701SENSOR HARNESS OPEN [CR-FL]
[B2701] Corner sensor front LH harness circuit is open.
AV- 1 5 4 , "Diagnosis Procedure"
B2702CORNER SENSOR [FR]
[B2702] Corner sensor front RH is malfunctioning.
AV- 1 5 5 , "DTC Logic"
B2703SENSOR HARNESS OPEN [CR-
FR]
[B2703] Corner sensor front RH harness circuit is open.
AV- 1 5 6 , "Diagnosis Procedure"
B2704CORNER SENSOR [RL]
[B2704] Corner sensor rear LH is malfunctioning.
AV- 1 5 7 , "DTC Logic"
B2705SENSOR HARNESS OPEN [CR-RL]
[B2705]
Corner sensor rear LH harness circuit is open.
AV- 1 5 8 , "Diagnosis Procedure"
B2706CORNER SENSOR [RR]
[B2706] Corner sensor rear RH is malfunctioning.
AV- 1 5 9 , "DTC Logic"
B2707SENSOR HARNESS OPEN [CR-
RR]
[B2707] Corner sensor rear RH harness circuit is open.
AV- 1 6 0 , "Diagnosis Procedure"
Revision: 2010 May2011 QX56

AV-118
< DTC/CIRCUIT DIAGNOSIS >
U1000 CAN COMM CIRCUIT
DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000006216248
CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-vehicle mul-
tiplex communication line with high data communication s peed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independently). In CA N communication, control units are connected with 2
communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring. Each
control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to LAN-28, "
CAN COMMUNICATION SYSTEM : CAN Communica-
tion Signal Chart".
DTC LogicINFOID:0000000006216249
DTC DETECTION LOGIC
Diagnosis ProcedureINFOID:0000000006216250
1.PERFORM SELF-DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check “Self Diagnostic Result” of “MULTI AV”.
Is
“CAN COMM CIRCUIT” displayed?
YES >> Refer to LAN-18, "Trouble Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
DTCDisplay contents of CON-
SULT-III DTC detection condition Probable malfunction location
U1000 CAN COMM CIRCUIT
[U1000] AV control unit is not transmitting or receiving
CAN communication signal for 2 seconds or
more.
CAN communication system.
Revision: 2010 May2011 QX56

AV
U1204 AV CONTROL UNITAV-123
< DTC/CIRCUIT DIAGNOSIS >
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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 >
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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
U1243 FRONT DISPLAY UNITAV-143
< DTC/CIRCUIT DIAGNOSIS >
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U1243 FRONT DISPLAY UNIT
DTC LogicINFOID:0000000006216293
Diagnosis ProcedureINFOID:0000000006216294
1.CHECK FRONT DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUITS
Check front display unit power s upply and ground circuits. Refer to AV-161, "
FRONT DISPLAY UNIT : Diagno-
sis Procedure".
Is inspection result normal?
YES >> GO TO 2.
NO >> Repair malfunctioning parts.
2.CHECK CONTINUITY CO MMUNICATION CIRCUITS
1. Turn ignition switch OFF.
2. Disconnect front display unit connector and AV control unit connector.
3. Check continuity between front display unit harness connector and AV control unit harness connector.
4. Check continuity between front display unit harness connector and ground.
Is inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK COMMUNICATION SIGNAL
1. Connect front display unit connector and AV control unit connector.
2. Turn ignition switch ON.
3. Check signal between front display unit harness connector and ground.
DTC Display contents of
CONSULT-III DTC Detection Condit
ion Possible causes
U1243 FRONT DISP CONN
[U1243] When either one of the following items is detected.
 front display unit power supply and ground circuits are
malfunctioning.
 serial communication circuits between front display unit and AV control unit are malfunctioning.  Front display unit power supply and
ground circuits.
 Serial communication circuits be- tween front display unit and AV
control unit.
Front display unit AV control unit Continuity
Connector Terminals Connector Terminals
M215 9
M210 89
Existed
10 73
Front display unit GroundContinuity
Connector Terminals
M215 9
Not existed
10
Revision: 2010 May2011 QX56

AV
U1244 GPS ANTENNAAV-145
< DTC/CIRCUIT DIAGNOSIS >
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U1244 GPS ANTENNA
DTC LogicINFOID:0000000006216295
Diagnosis ProcedureINFOID:0000000006216296
1.GPS ANTENNA CHECK
Visually check GPS antenna and antenna feeder.
Is inspection result normal?
YES >> GO TO 2.
NO >> Repair malfunctioning parts.
2.CHECK AV CONTROL UNIT VOLTAGE
1. Disconnect GPS antenna connector.
2. Turn ignition switch ON.
3. Check voltage between AV control unit terminal and ground.
Is 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 Condit
ion Possible causes
U1244 GPS ANTENNA CONN
[U1244] GPS antenna connection malfunction is detected. GPS antenna disconnection
(+)
(− ) Vol tag e
(Approx.)
AV c o n t r o l u n i t
Te r m i n a l153 Ground 5.0 V
Revision: 2010 May2011 QX56