Nissan Pathfinder (2012 year). Manual — part 63
AV-322
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U121A AV CONTROL UNIT
U121A AV CONTROL UNIT
Description
INFOID:0000000007347862
Replace the AV control unit if this DTC is displayed. Refer to
AV-420, "Removal and Installation"
.
DTC Logic
INFOID:0000000007347863
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
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
420, "Removal and Installation"
.
August 2012
2012 Pathfinder
AV
U121B AV CONTROL UNIT
AV-323
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
U121B AV CONTROL UNIT
Description
INFOID:0000000007347864
Replace the AV control unit if this DTC is displayed. Refer to
AV-420, "Removal and Installation"
.
DTC Logic
INFOID:0000000007347865
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
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
420, "Removal and Installation"
August 2012
2012 Pathfinder
AV-324
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U121C AV CONTROL UNIT
U121C AV CONTROL UNIT
Description
INFOID:0000000007347866
Replace the AV control unit if this DTC is displayed. Refer to
AV-420, "Removal and Installation"
.
DTC Logic
INFOID:0000000007347867
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
DTC Detection Condition
Action to take
U121C
HDD-ACCESS
[U121C]
Internal malfunction of AV control unit (HDD access error)
is detected.
Replace AV control unit. Refer to
420, "Removal and Installation"
.
August 2012
2012 Pathfinder
AV
U121D AV CONTROL UNIT
AV-325
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
U121D AV CONTROL UNIT
Description
INFOID:0000000007347868
Replace the AV control unit if this DTC is displayed. Refer to
AV-420, "Removal and Installation"
.
DTC Logic
INFOID:0000000007347869
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
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
420, "Removal and Installation"
August 2012
2012 Pathfinder
AV-326
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U121E AV CONTROL UNIT
U121E AV CONTROL UNIT
Description
INFOID:0000000007347870
Replace the AV control unit if this DTC is displayed. Refer to
AV-420, "Removal and Installation"
.
DTC Logic
INFOID:0000000007347871
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
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
420, "Removal and Installation"
.
August 2012
2012 Pathfinder
AV
U121F AV CONTROL UNIT
AV-327
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
U121F AV CONTROL UNIT
Description
INFOID:0000000007347872
DTC Logic
INFOID:0000000007347873
Diagnosis Procedure
INFOID:0000000007347874
1.
CHECK AV CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT
Check audio control unit power supply and ground circuit. Refer to
AV-334, "AV CONTROL UNIT : Diagnosis
.
Is inspection result OK?
YES
>> Inspection End.
NO
>> Repair malfunctioning parts.
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
DTC Detection Condition
Action to take
U121F
INTERNAL COMM
[U121F]
Internal malfunction of AV control unit (internal communi-
cation error) is detected.
AV control unit power supply and
ground circuit
August 2012
2012 Pathfinder
AV-328
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U1243 DISPLAY UNIT
U1243 DISPLAY UNIT
Description
INFOID:0000000007347875
DTC Logic
INFOID:0000000007347876
Diagnosis Procedure
INFOID:0000000007347877
Regarding Wiring Diagram information, refer to
AV-385, "Wiring Diagram - With Navigation System"
.
1.
CHECK DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUIT
Check display unit power supply and ground circuit. Refer to
AV-335, "DISPLAY UNIT : Diagnosis Procedure"
.
Is inspection result OK?
YES
>> GO TO 2
NO
>> Repair malfunctioning parts.
2.
CHECK CONTINUITY COMMUNICATION CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector M92 and AV control unit connector M37.
3. Check continuity between display unit harness connector M92
(A) terminals 11, 22 and AV control unit harness connector M37
(B) terminals 30, 31.
4. Check continuity between display unit harness connector M92
(A) terminals 11, 22 and ground.
Part name
Description
DISPLAY UNIT
• Display image is controlled by the serial communication from AV control unit.
• RGB image signal is input from AV control unit (RGB, RGB area and RGB syn-
chronizing). Auxiliary image signal is input from the auxiliary input jack. Cam-
era image signal is input from the rear view camera.
• Synchronize signal (HP, VP) is output to AV control unit.
• Touch panel function can be operated for each system by touching a display
directly.
DTC
Display contents of
CONSULT
DTC Detection Condition
Possible causes
U1243
FRONT DISP CONN
[U1243]
• Display unit power supply and ground circuit malfunc-
tion is detected
• Malfunction is detected on communication circuit be-
tween display unit and AV control unit
• Malfunction is detected on communication signal be-
tween display unit and AV control unit
• Display unit power supply and
ground circuit
• Communication circuit between
display unit and AV control unit
A
B
Continuity
Connector
Terminal
Connector
Terminal
M92
11
M37
30
Yes
22
31
A
—
Continuity
Connector
Terminal
M92
11
Ground
No
22
AWNIA1787ZZ
August 2012
2012 Pathfinder
AV
U1243 DISPLAY UNIT
AV-329
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
Are continuity results as specified?
YES
>> GO TO 3
NO
>> Repair harness or connector.
3.
CHECK COMMUNICATION SIGNAL
1. Connect display unit connector M92 and AV control unit connec-
tor M37.
2. Turn ignition switch ON.
3. Check signal between display unit harness connector M92 ter-
minal 11 and ground.
Are voltage readings as specified?
YES
>> GO TO 4
NO
>> Replace AV control unit. Refer to
AV-420, "Removal and Installation"
.
4.
CHECK COMMUNICATION SIGNAL
Check signal between display unit harness connector M92 terminal
22 and ground.
Are voltage readings as specified?
YES
>> Inspection End.
NO
>> Replace display unit. Refer to
AV-422, "Removal and Installation"
Connector
Terminals
Reference Signal
(+)
(-)
M92
11
Ground
ALNIA0398GB
PKIB5039J
Connector
Terminals
Reference Signal
(+)
(-)
M92
22
Ground
ALNIA0399GB
PKIB5039J
August 2012
2012 Pathfinder
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст