Nissan Pathfinder (2008 year). Manual — part 42
AV-176
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
U1300 AV COMM CIRCUIT
U1300 AV COMM CIRCUIT
Description
INFOID:0000000001450701
U1300 is indicated when malfunction occurs in communication signal of multi AV system. Indicated simulta-
neously, without fail, with the malfunction of control units connected to AV control unit with communication line.
Determine the possible malfunction cause from the table below.
Self-diagnosis results display item
DTC
Display contents of
CONSULT-III
DTC Detection Condition
Possible causes
U1300
U1240
• AV COMM CIRCUIT
[U1300]
• SWITCH CONN
[U1240]
• A/C and AV switch assembly power supply and ground
circuit malfunction is detected
• A malfunction is detected in communication circuit be-
tween AV control unit and A/C and AV switch assembly
• A malfunction is detected in communication signal be-
tween AV control unit and A/C and AV switch assembly
• A/C and AV switch assembly power
supply and ground circuits
• Communication circuit between AV
control unit and A/C and AV switch
assembly
AV
U1310 AV CONTROL UNIT
AV-177
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
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U1310 AV CONTROL UNIT
Description
INFOID:0000000001450689
Replace the AV control unit if this DTC is displayed. Refer to
AV-266, "Removal and Installation"
.
DTC Logic
INFOID:0000000001450690
Part name
Description
AV CONTROL UNIT
• 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.
• AV control unit includes audio function and vehicle information function.
• 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
U1310
CONTROL UNIT (AV)
[U1310]
An initial diagnosis error is detected in AV communication
circuit.
Replace AV control unit. Refer to
AV-178
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
AV CONTROL UNIT
AV CONTROL UNIT : Diagnosis Procedure
INFOID:0000000001451602
1.
CHECK FUSES
Check that the following fuses of the AV control unit are not are not blown.
Are the fuses OK?
YES
>> GO TO 2
NO
>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.
POWER SUPPLY CIRCUIT CHECK
1.
Disconnect AV control unit connectors M42 and M70.
2.
Check voltage between the AV control unit connectors M42 and
M70 and ground.
Are the voltage results as specified?
YES
>> GO TO 3
NO
>> • Check connector housings for disconnected or loose
terminals.
• Repair harness or connector.
3.
GROUND CIRCUIT CHECK
Unit
Terminals
Signal name
Fuse No.
AV control unit
19
Battery power
29
7
Ignition switch ACC or ON
4
104
Ignition switch ON or START
12
(+)
(-)
OFF
ACC
ON
Connector
Terminal
M42
7
Ground
0V
Battery
voltage
Battery
voltage
19
Ground
Battery
voltage
Battery
voltage
Battery
voltage
M70
104
Ground
0V
0V
Battery
voltage
ALNIA0313GB
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-179
< COMPONENT DIAGNOSIS >
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1.
Turn ignition switch OFF.
2.
Check continuity between AV control unit harness connectors
M42, M45 and M70 and ground.
Are the continuity results as specified?
YES
>> Inspection End.
NO
>> Repair AV control unit ground.
DISPLAY UNIT
DISPLAY UNIT : Diagnosis Procedure
INFOID:0000000001451603
1.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch to ACC.
2.
Check voltage between display unit harness connector M93 and
ground.
Does specified voltage exist?
YES
>> GO TO 3
NO
>> GO TO 2
2.
CHECK POWER SUPPLY CIRCUIT
(+)
(-)
Continuity
Connector
Terminal
M42
20
Ground
Yes
M45
54
M70
85
ALNIA0314GB
Signal name
Connector
No.
Terminal
No.
Ignition switch
position
Value (Approx.)
Inverter VCC
M93
2
ACC
9V
Signal VCC
3
ALNIA0317GB
AV-180
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
POWER SUPPLY AND GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect the display unit connector M93 and the AV control
unit connector M45.
3.
Check continuity between the display unit harness connector
M93 (A) and the AV control unit connector M45 (B).
4.
Check continuity between the display unit harness connector M93 (A) and ground.
Are continuity results as specified?
YES
>> Check AV control unit power and ground supply. Refer to
AV-178, "AV CONTROL UNIT : Diagno-
NO
>> Repair harness or connector.
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect display unit connector.
3.
Check continuity between display unit harness connector and
ground.
Does continuity exist?
YES
>> INSPECTION END.
NO
>> Repair harness or connector.
A/C AND AV SWITCH ASSEMBLY
A/C AND AV SWITCH ASSEMBLY : Diagnosis Procedure
INFOID:0000000001450704
1.
CHECK FUSE
Check that the fuse of the AC and AV switch assembly is not blown.
Is the fuse OK?
YES
>> GO TO 2
NO
>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.
POWER SUPPLY CIRCUIT CHECK
A
B
Continuity
Connector
Terminal
Connector
Terminal
M93
2
M45
59
Yes
3
47
A
—
Continuity
Connector
Terminal
M93
2
Ground
No
3
ALNIA0318GB
Connector
Terminal
—
Continuity
M93
1
Ground
Yes
ALNIA0319GB
Unit
Terminal
Signal name
Fuse No.
A/C and AV switch assembly
2
Ignition switch ACC or ON
4
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-181
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
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1.
Disconnect A/C and AV switch assembly connector M98.
2.
Check voltage between the A/C and AV switch assembly con-
nector M98 and ground.
Are the voltage results as specified?
YES
>> GO TO 3
NO
>> • Check connector housings for disconnected or loose
terminals.
• Repair harness or connector.
3.
GROUND CIRCUIT CHECK
1.
Turn ignition switch OFF.
2.
Check continuity between A/C and AV switch assembly harness
connector M98 and ground.
Are the continuity results as specified?
YES
>> Inspection End.
NO
>> Repair harness or ground.
BOSE SPEAKER AMP
BOSE SPEAKER AMP : Diagnosis Procedure
INFOID:0000000001450705
1.
CHECK FUSE
Check that the BOSE speaker amp. fuse is not blown.
Are the fuses OK?
YES
>> GO TO 2
NO
>> Be sure to eliminate cause of malfunction before installing new fuse.
2.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BOSE speaker amp. connector.
3.
Check voltage between BOSE speaker amp. harness connector
B74 terminal 1 and ground.
Is battery voltage present?
YES
>> GO TO 3
NO
>> Check harness between BOSE speaker amp. and fuse.
3.
CHECK GROUND CIRCUIT
(+)
(-)
OFF
ACC
ON
Connector
Terminal
M98
2
Ground
0V
Battery
voltage
Battery
voltage
ALNIA0315GB
Connector
Terminal
—
Continuity
M98
1
Ground
Yes
ALNIA0316GB
Unit
Terminal
Signal name
Fuse No.
BOSE speaker amp.
1
Battery power
29
(+)
(-)
Voltage (approx.)
Connector
Terminal
B74
1
Ground
Battery voltage
ALNIA0527GB
AV-182
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
POWER SUPPLY AND GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BOSE speaker amp. connector.
3.
Check continuity between BOSE speaker amp. harness connec-
tor B74 terminal 17 and ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair harness or connector.
WOOFER
WOOFER : Diagnosis Procedure
INFOID:0000000001450706
1.
CHECK FUSE
Check that the subwoofer fuse is not blown.
Is the fuse OK?
YES
>> GO TO 2
NO
>> Be sure to eliminate cause of malfunction before installing new fuse.
2.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect subwoofer connector.
3.
Check voltage between subwoofer harness connector B72 ter-
minal 6 and ground.
Is battery voltage present?
YES
>> GO TO 3
NO
>> Check harness between subwoofer and fuse.
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Check continuity between subwoofer harness connector B72
terminal 5 and ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair harness or connector.
SATELLITE RADIO TUNER
SATELLITE RADIO TUNER : Diagnosis Procedure
INFOID:0000000001451604
1.
CHECK FUSES
(+)
(-)
Continuity
Connector
Terminal
B74
17
Ground
Yes
ALNIA0526GB
Unit
Terminal
Signal name
Fuse No.
Subwoofer
6
Battery power
17
(+)
(-)
Voltage (approx.)
Connector
Terminal
B72
6
Ground
Battery voltage
ALNIA0528GB
(+)
(-)
Continuity
Connector
Terminal
B72
5
Ground
Yes
ALNIA0529GB
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-183
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
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Check that the following fuses of the satellite radio tuner (factory installed) are not blown.
Are the fuses OK?
YES
>> GO TO 2
NO
>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.
POWER SUPPLY CIRCUIT CHECK
1.
Turn ignition switch OFF.
2.
Disconnect satellite radio tuner (factory installed) connector M41.
3.
Check voltage between the satellite radio tuner (factory installed) and ground.
Are the voltage readings as specified?
YES
>> GO TO 3
NO
>> • Check connector housings for disconnected or loose
terminals.
• Repair harness or connector.
3.
GROUND CIRCUIT CHECK
Inspect satellite radio tuner (factory installed) case ground.
Does case ground pass inspection?
YES
>> Inspection End.
NO
>> Repair satellite radio tuner (factory installed) case ground.
REAR VIEW CAMERA CONTROL UNIT
REAR VIEW CAMERA CONTROL UNIT : Diagnosis Procedure
INFOID:0000000001451605
1.
CHECK FUSE
Check that the following fuses of the rear view camera control unit are not blown.
Are the fuses OK?
YES
>> GO TO 2
NO
>> Be sure to eliminate cause of malfunction before installing new fuse.
2.
CHECK POWER SUPPLY CIRCUIT
Unit
Terminals
Signal name
Fuse No.
Satellite radio tuner (factory in-
stalled)
32
Battery power
17
36
Ignition switch ACC or ON
4
(+)
(-)
OFF
ACC
ON
Connector
Terminal
M41
32
Ground
Battery
voltage
Battery
voltage
Battery
voltage
36
0V
Battery
voltage
Battery
voltage
WKIA4539E
Unit
Terminals
Signal name
Fuse No.
Rear view camera control unit
1
Battery power
29
2
Ignition switch ACC or ON
4
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