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Home >> Infiniti >> 2011 >> M56 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 74 (Audio, Visual & Navigation System) >> System Description >> Diagnosis System (Av Control Unit) >> CONSULT Function >> Self Diagnosis Result >> Self-diagnosis Results Display Item
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Self-diagnosis Results Display Item

WARNING: This page is about a different car, the 2012 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
Error item Description Possible malfunction factor/Action to take
CAN COMM CIRCUIT [U1000] CAN communication malfunction is detected. Refer to "DIAGNOSIS PROCEDURE ".
CONTROL UNIT (CAN) [U1010] CAN initial diagnosis malfunction is detected. Replace the AV control unit if the malfunction occurs constantly.
Refer to "REMOVAL AND INSTALLATION ".
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 malfunctions, then there is a possibility of the detection of a temporary malfunction.
  • Replace the AV control unit if the malfunction occurs constantly.

Refer to "REMOVAL AND INSTALLATION ".
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 unless any symptom (GPS reception error, etc.) occurs.
  • Replace the AV control unit if the malfunction occurs constantly.

Refer to "REMOVAL AND INSTALLATION ".
GPS ROM [U1205]
GPS RAM [U1206]
GPS RTC [U1207]
USB CONTROLLER [U1225] USB connection malfunction is detected. Check that the connection to the USB connector is normal.
DSP CONN [U121 D] AV control unit malfunction is detected.
  • If a disc can be played, then there is a possibility of the detection of a temporary malfunction.
  • Replace the AV control unit if the malfunction occurs constantly.

Refer to "REMOVAL AND INSTALLATION ".
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 temporary malfunction.
  • Replace the AV control unit if the malfunction occurs constantly.

Refer to "REMOVAL AND INSTALLATION ".
CONFIG UNFINISH [U122A] The writing of configuration data is incomplete. Write configuration data with CONSULT.
AMP TEMP [U1231] BOSE amp. malfunction is detected. Replace the BOSE amp. if the malfunction occurs constantly.
Refer to "REMOVAL AND INSTALLATION ".
ST ANGLE SEN CALIB [U1232] Predictive course line center position adjustment of the steering angle sensor is incomplete. Adjust the predictive course line center position of the steering angle sensor.
Refer to "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 between 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 between 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 between 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 between headrest display unit RH and ground.
XM ANTENNA CONN [U1258] Satellite radio antenna connection malfunction is detected. Satellite radio antenna disconnection.
USB OVERCURRENT [U1263] Detection of overcurrent in USB connector. Check USB harness between the AV control unit and USB connector.
ANTENNA AMP TERMINAL
[OPEN or SHORT]
[U1264]		 Radio antenna amp. ON signal circuit malfunction is detected. Radio antenna amp. ON signal circuit between 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.
  • FL-DOOR WOOFER

    [OPEN, SHORT, GND-SHORT or VB-SHOR]

    [U1601]

  • FL-DOOR TWEETER

    [OPEN, SHORT, GND-SHORT or VB-SHOR]

    [U1603]

 When either one of the following items are detected:
  • sound signal circuits between BOSE amp. and front door speaker LH are malfunctioning.
  • sound signal circuits between BOSE amp. and front door tweeter LH are malfunctioning.
  • Sound signal circuits between BOSE amp. and front door speaker LH.
  • Sound signal circuits between BOSE amp. and front door tweeter LH.
  • FR-DOOR WOOFER

    [OPEN, SHORT, GND-SHORT or VB-SHOR]

    [U1609]

  • FR-DOOR TWEETER

    [OPEN, SHORT, GND-SHORT or VB-SHOR]

    [U160B]

 When either one of the following items are detected:
  • sound signal circuits between BOSE amp. and front door speaker RH are malfunctioning.
  • sound signal circuits between BOSE amp. and front door tweeter RH are malfunctioning.
  • Sound signal circuits between BOSE amp. and front door speaker RH.
  • Sound signal circuits between BOSE amp. and front door tweeter RH.
F-INST L-TWEETER
[OPEN, SHORT, GND-SHORT or VB-SHOR]
[U1627]		 Sound signal circuits between BOSE amp. and squawker LH are malfunctioning. Sound signal circuits between BOSE amp. and squawker LH.
F-INST C-SQAWK
[OPEN, SHORT, GND-SHORT or VB-SHOR]
[U162A]		 Sound signal circuits between BOSE amp. and center speaker are malfunctioning. Sound signal circuits between BOSE amp. and center speaker.
F-INST R-TWEETER
[OPEN, SHORT, GND-SHORT or VB-SHOR]
[U162F]		 Sound signal circuits between BOSE amp. and squawker RH are malfunctioning. Sound signal circuits between BOSE amp. and squawker RH.
  • 2L-DOOR SPEAKER

    [OPEN, SHORT, GND-SHORT or VB-SHOR]

    [U1684]

  • 2L-DOOR TWEETER

    [OPEN, SHORT, GND-SHORT or VB-SHOR]

    [U1687]

 When either one of the following items are detected:
  • sound signal circuits between BOSE amp. and rear door speaker LH are malfunctioning.
  • sound signal circuits between BOSE amp. and rear door tweeter LH are malfunctioning.
  • Sound signal circuits between BOSE amp. and rear door speaker LH.
  • Sound signal circuits between BOSE amp. and rear door tweeter LH.
  • 2R-DOOR SPEAKER

    [OPEN, SHORT, GND-SHORT or VB-SHOR]

    [U168C]

  • 2R-DOOR TWEETER

    [OPEN, SHORT, GND-SHORT or VB-SHOR]

    [U168F]

 When either one of the following items are detected:
  • sound signal circuits between BOSE amp. and rear door speaker RH are malfunctioning.
  • sound signal circuits between BOSE amp. and rear door tweeter RH are malfunctioning.
  • Sound signal circuits between BOSE amp. and rear door speaker RH.
  • Sound signal circuits between BOSE amp. and rear door tweeter RH.
R-LUGGAGE L-WOOFER
[OPEN, SHORT, GND-SHORT or VB-SHOR]
[U175D]		 Sound signal circuits between BOSE amp. and woofer are malfunctioning. Sound signal circuits between BOSE amp. and woofer.
R-ROOF L-SQAWK
[OPEN, SHORT, GND-SHORT or VB-SHOR]
[U176A]		 Sound signal circuits between BOSE amp. and roof speaker LH malfunctioning. Sound signal circuits between BOSE amp. and roof speaker LH.
R-ROOF R-SQAWK
[OPEN, SHORT, GND-SHORT or VB-SHOR]
[U1772]		 Sound signal circuits between BOSE amp. and roof speaker RH malfunctioning. Sound signal circuits between BOSE amp. and roof speaker RH.
  • AV COMM CIRCUIT [U1300]
  • SWITCH CONN [U1240]
 When either one of the following items are detected:
  • multifunction switch power supply and ground circuits are malfunctioning.
  • AV communication circuits between AV control unit and multifunction switch are malfunctioning.
  • Multifunction switch power supply and ground circuits.
  • AV communication circuits between AV control unit and multifunction switch.
  • AV COMM CIRCUIT [U1300]
  • AMP CONN [U124E]
 When either one of the following items are detected:
  • BOSE amp. power supply and ground circuits are malfunctioning.
  • AV communication circuits between headrest display unit LH and BOSE amp. are malfunctioning.
  • BOSE amp. power supply and ground circuits.

    Refer to "BOSE AMP.: DIAGNOSIS PROCEDURE ".

  • AV communication circuits between headrest display unit LH and BOSE amp.
  • AV COMM CIRCUIT [U1300]
  • AROUND CAMERA CONN [U125B]
 When either one of the following items are detected:
  • around view monitor control unit power supply and ground circuits are malfunctioning.
  • AV communication circuits between AV control unit and around view monitor control unit are malfunctioning.
  • Around view monitor control unit power supply and ground circuits.
  • AV communication circuits between AV control unit and around view monitor control unit.
  • AV COMM CIRCUIT [U1300]
  • SONAR CONN [U125C]
 When either one of the following items are detected:
  • sonar control unit power supply and ground circuits are malfunctioning.
  • AV communication circuits between AV control unit and sonar control unit are malfunctioning.
  • Sonar control unit power supply and ground circuits.
  • AV communication circuits between AV control unit and sonar control unit.
  • AV COMM CIRCUIT [U1300]
  • SWITCH CONN [U1240]
  • SONAR CONN [U125C]
  • AROUND CAMERA CONN [U125B]
  • VIDEO DIST CONN [U1246]
 AV communication circuits between AV control unit and multifunction switch are malfunctioning. AV communication circuits between AV control unit and multifunction switch.
  • AV COMM CIRCUIT [U1300]
  • SWITCH CONN [U1240]
  • AMP CONN [U124E]
  • SONAR CONN [U125C]
  • AROUND CAMERA CONN [U125B]
  • VIDEO DIST CONN [U1246]
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