2009 INFINITI QX56 audio

AV-50
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
U1217 AV CONTROL UNIT
U1217 AV CONTROL UNIT
DescriptionINFOID:0000000004110658
Replace the AV control unit if this DTC is displayed. Refer to
AV-168, "Removal and Installation".
DTC LogicINFOID:0000000003776812
DTC DETECTION LOGIC
Part name Description
AV CONTROL UNIT • Integrates HDD (hard disk dr
ive) allowing map data and music data to be
stored.
• It is the master unit of the MULTI AV system, and it is connected to each control unit by means of communication. It operates each system according to com-
munication signals from the AV control unit.
• The AV control unit includes the audio, hands-free phone, voice control, navi- gation, and vehicle information functions.
• It is connected to ECM and combination meter via CAN communication to ob-
tain necessary information for the vehicle information function.
• It inputs the automatic brightness ON/OFF signals that are required for the dis- play dimming control.
• It inputs the signals for driving status recognition (vehicle speed, reverse and
parking brake).
DTC CONSULT-III display Detection conditionAction to take
U1217 BLUETOOTH CONN
[U1217] An internal malfunction is detected in AV control unit (Blue-
tooth module connection malfunction). Replace AV control unit. Refer
to
AV- 1 6 8 , "
Removal and Instal-
lation".
Revision: December 20092009 QX56

AV
U1218 AV CONTROL UNITAV-51
< COMPONENT DIAGNOSIS > [AUDIO SYSTEM]
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U1218 AV CONTROL UNIT
DescriptionINFOID:0000000003776813
Replace the AV control unit if this DTC is displayed. Refer to AV-168, "Removal and Installation".
DTC LogicINFOID:0000000003776814
Part name Description
AV CONTROL UNIT • Integrates HDD (hard disk
drive) allowing map data and music data to be
stored.
• It is the master unit of the MULTI AV system, and it is connected to each control unit by means of communication. It operates each system according to com-
munication signals from the AV control unit.
• The AV control unit includes the audio, hands-free phone, voice control, navi- gation, and vehicle information functions.
• It is connected to ECM and combination meter via CAN communication to ob-
tain necessary information for the vehicle information function.
• It inputs the automatic brightness ON/OFF signals that are required for the dis- play dimming control.
• It inputs the signals for driving status recognition (vehicle speed, reverse and
parking brake).
DTC Display contents of
CONSULT-III DTC Detection Condition
Action to take
U1218 HDD-CONN
[U1218] Internal malfunction of AV
control unit (HDD connection
malfunction) is detected. Replace AV control unit. Refer to
AV-
168, "Removal and Installation".
Revision: December 20092009 QX56

AV-52
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
U1219 AV CONTROL UNIT
U1219 AV CONTROL UNIT
DescriptionINFOID:0000000004110626
Replace the AV control unit if this DTC is displayed. Refer to
AV-168, "Removal and Installation".
DTC LogicINFOID:0000000003776816
Part name Description
AV CONTROL UNIT • Integrates HDD (hard disk dr
ive) allowing map data and music data to be
stored.
• It is the master unit of the MULTI AV system, and it is connected to each control unit by means of communication. It operates each system according to com-
munication signals from the AV control unit.
• The AV control unit includes the audio, hands-free phone, voice control, navi- gation, and vehicle information functions.
• It is connected to ECM and combination meter via CAN communication to ob-
tain necessary information for the vehicle information function.
• It inputs the automatic brightness ON/OFF signals that are required for the dis- play dimming control.
• It inputs the signals for driving status recognition (vehicle speed, reverse and
parking brake).
DTC Display contents of
CONSULT-III DTC Detection Condition
Action to take
U1219 HDD-READ
[U1219] Internal ma
lfunction of AV control unit (HDD read malfunc-
tion) is detected. Replace AV control unit. Refer to
AV-
168, "Removal and Installation".
Revision: December 20092009 QX56

AV
U121A AV CONTROL UNITAV-53
< COMPONENT DIAGNOSIS > [AUDIO SYSTEM]
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U121A AV CONTROL UNIT
DescriptionINFOID:0000000004110659
Replace the AV control unit if this DTC is displayed. Refer to AV-168, "Removal and Installation".
DTC LogicINFOID:0000000003776818
Part name Description
AV CONTROL UNIT • Integrates HDD (hard disk
drive) allowing map data and music data to be
stored.
• It is the master unit of the MULTI AV system, and it is connected to each control unit by means of communication. It operates each system according to com-
munication signals from the AV control unit.
• The AV control unit includes the audio, hands-free phone, voice control, navi- gation, and vehicle information functions.
• It is connected to ECM and combination meter via CAN communication to ob-
tain necessary information for the vehicle information function.
• It inputs the automatic brightness ON/OFF signals that are required for the dis- play dimming control.
• It inputs the signals for driving status recognition (vehicle speed, reverse and
parking brake).
DTC Display contents of
CONSULT-III DTC Detection Condition
Action to take
U121A HDD-WRITE
[U121A] Internal malfunction of AV
control unit (HDD write mal-
function) is detected. Replace AV control unit. Refer to
AV-
168, "Removal and Installation".
Revision: December 20092009 QX56

AV-54
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
U121B AV CONTROL UNIT
U121B AV CONTROL UNIT
DescriptionINFOID:0000000004110628
Replace the AV control unit if this DTC is displayed. Refer to
AV-168, "Removal and Installation".
DTC LogicINFOID:0000000003776820
Part name Description
AV CONTROL UNIT • Integrates HDD (hard disk dr
ive) allowing map data and music data to be
stored.
• It is the master unit of the MULTI AV system, and it is connected to each control unit by means of communication. It operates each system according to com-
munication signals from the AV control unit.
• The AV control unit includes the audio, hands-free phone, voice control, navi- gation, and vehicle information functions.
• It is connected to ECM and combination meter via CAN communication to ob-
tain necessary information for the vehicle information function.
• It inputs the automatic brightness ON/OFF signals that are required for the dis- play dimming control.
• It inputs the signals for driving status recognition (vehicle speed, reverse and
parking brake).
DTC Display contents of
CONSULT-III DTC Detection Condition
Action to take
U121B HDD-COMM
[U121B] Internal malfunction of AV control unit (HDD communica-
tion error) is
detected. Replace AV control unit. Refer to
AV-
168, "Removal and Installation".
Revision: December 20092009 QX56

AV
U121C AV CONTROL UNITAV-55
< COMPONENT DIAGNOSIS > [AUDIO SYSTEM]
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U121C AV CONTROL UNIT
DescriptionINFOID:0000000004110629
Replace the AV control unit if this DTC is displayed. Refer to AV-168, "Removal and Installation".
DTC LogicINFOID:0000000003776822
Part name Description
AV CONTROL UNIT • Integrates HDD (hard disk
drive) allowing map data and music data to be
stored.
• It is the master unit of the MULTI AV system, and it is connected to each control unit by means of communication. It operates each system according to com-
munication signals from the AV control unit.
• The AV control unit includes the audio, hands-free phone, voice control, navi- gation, and vehicle information functions.
• It is connected to ECM and combination meter via CAN communication to ob-
tain necessary information for the vehicle information function.
• It inputs the automatic brightness ON/OFF signals that are required for the dis- play dimming control.
• It inputs the signals for driving status recognition (vehicle speed, reverse and
parking brake).
DTC Display contents of
CONSULT-III DTC Detection Condition
Action to take
U121C HDD-ACCESS
[U121C] Internal malfunction of AV co
ntrol unit (HDD access error)
is detected. Replace AV control unit. Refer to
AV-
168, "Removal and Installation".
Revision: December 20092009 QX56

AV-56
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
U121D AV CONTROL UNIT
U121D AV CONTROL UNIT
DescriptionINFOID:0000000004110630
Replace the AV control unit if this DTC is displayed. Refer to
AV-168, "Removal and Installation".
DTC LogicINFOID:0000000003776824
Part name Description
AV CONTROL UNIT • Integrates HDD (hard disk dr
ive) allowing map data and music data to be
stored.
• It is the master unit of the MULTI AV system, and it is connected to each control unit by means of communication. It operates each system according to com-
munication signals from the AV control unit.
• The AV control unit includes the audio, hands-free phone, voice control, navi- gation, and vehicle information functions.
• It is connected to ECM and combination meter via CAN communication to ob-
tain necessary information for the vehicle information function.
• It inputs the automatic brightness ON/OFF signals that are required for the dis- play dimming control.
• It inputs the signals for driving status recognition (vehicle speed, reverse and
parking brake).
DTC Display contents of
CONSULT-III DTC Detection Condition
Action to take
U121D DSP CONN
[U121D] Internal malfunction of AV control unit (DSP connection
error) is detected. Replace AV control unit. Refer to
AV-
168, "Removal and Installation".
Revision: December 20092009 QX56

AV
U121E AV CONTROL UNITAV-57
< COMPONENT DIAGNOSIS > [AUDIO SYSTEM]
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M B A
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U121E AV CONTROL UNIT
DescriptionINFOID:0000000004110631
Replace the AV control unit if this DTC is displayed. Refer to AV-168, "Removal and Installation".
DTC LogicINFOID:0000000003776826
Part name Description
AV CONTROL UNIT • Integrates HDD (hard disk
drive) allowing map data and music data to be
stored.
• It is the master unit of the MULTI AV system, and it is connected to each control unit by means of communication. It operates each system according to com-
munication signals from the AV control unit.
• The AV control unit includes the audio, hands-free phone, voice control, navi- gation, and vehicle information functions.
• It is connected to ECM and combination meter via CAN communication to ob-
tain necessary information for the vehicle information function.
• It inputs the automatic brightness ON/OFF signals that are required for the dis- play dimming control.
• It inputs the signals for driving status recognition (vehicle speed, reverse and
parking brake).
DTC Display contents of
CONSULT-III DTC Detection Condition
Action to take
U121E DSP COMM
[U121E] Internal malfunction of AV control unit (DSP communica-
tion error) is detected. Replace AV control unit. Refer to
AV-
168, "Removal and Installation".
Revision: December 20092009 QX56