Nissan Titan A60. Instruction — part 56
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-49
< DTC/CIRCUIT DIAGNOSIS >
[MID AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
DTC/CIRCUIT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
AUDIO UNIT
AUDIO UNIT : Diagnosis Procedure
INFOID:0000000006166465
Regarding Wiring Diagram information, refer to
1.
CHECK FUSES
Check that the following fuses of the audio 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 audio unit connector M165.
2. Check voltage between the audio unit connector M165 and
ground.
Are the voltage results as specified?
YES
>> GO TO 3.
NO
>> • Check connector housing for disconnected or loose terminals.
• Repair harness or connector.
3.
GROUND CIRCUIT CHECK
Inspect audio unit case ground.
Does case ground pass inspection?
YES
>> Inspection End.
NO
>> Repair audio unit case ground.
BLUETOOTH CONTROL UNIT
BLUETOOTH CONTROL UNIT : Diagnosis Procedure
INFOID:0000000006706834
Regarding Wiring Diagram information, refer to
1.
CHECK FUSE
Check that the following fuses for the Bluetooth control unit are not blown.
Unit
Terminals
Signal name
Fuse No.
Audio unit
6
Battery power
31
10
Ignition switch ACC or ON
4
(+)
(-)
OFF
ACC
ON
Connector
Terminal
M165
6
Ground
0V
Battery
voltage
Battery
voltage
10
Ground
Battery
voltage
Battery
voltage
Battery
voltage
ALNIA0695GB
AV-50
< DTC/CIRCUIT DIAGNOSIS >
[MID AUDIO]
POWER SUPPLY AND GROUND CIRCUIT
Is inspection result OK?
YES
>> GO TO 2.
NO
>> Be sure to eliminate cause of malfunction before installing new fuse.
2.
CHECK POWER SUPPLY CIRCUIT
Check voltage between Bluetooth control unit harness connector
B142 and ground.
Is battery voltage present as specified?
YES
>> GO TO 3.
NO
>> Check harness between Bluetooth control unit and fuse.
3.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Bluetooth control unit connector.
3. Check continuity between Bluetooth control unit harness con-
nector B142 and ground.
Are continuity results as specified?
YES
>> Inspection End.
NO
>> Repair harness or connector.
MICROPHONE
MICROPHONE : Diagnosis Procedure
INFOID:0000000006706835
Regarding Wiring Diagram information, refer to
1.
CHECK POWER SUPPLY CIRCUIT (MICROPHONE SIDE)
1. Turn ignition switch ON.
Unit
Terminal
Signal name
Fuse No.
Bluetooth control unit
1
Battery power
31
2
Ignition switch ACC or ON
4
3
Ignition switch ON or START
12
Connector
Terminal
Ignition switch position
Value (Approx.)
B142
1
OFF
Battery voltage
2
ACC
3
ON
ALNIA0323GB
Connector
Terminal
—
Continuity
B142
4
Ground
Yes
20
23
ALNIA0756GB
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-51
< DTC/CIRCUIT DIAGNOSIS >
[MID AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
2. Check voltage between microphone harness connector R109
terminal 4 and ground.
Is approximately 5V present?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY CIRCUIT (CONTINUITY)
1. Turn ignition switch OFF.
2. Disconnect microphone and Bluetooth control unit harness con-
nectors.
3. Check continuity between microphone harness connector R109
(A) terminal 4 and Bluetooth control unit harness connector
B142 (B) terminal 29.
4. Check continuity between microphone harness connector R109
(A) terminal 4 and ground.
Are the continuity test results as specified?
YES
>> Replace the Bluetooth control unit. Refer to
AV-95, "Removal and Installation"
NO
>> Repair harness or connector.
3.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect microphone harness connector R109 and Bluetooth
control unit harness connector B142.
3. Check continuity between microphone harness connector R109
(A) terminal 2 and Bluetooth control unit harness connector
B142 (B) terminal 8.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair harness or connector.
(+)
(-)
Value (Approx.)
Connector
Terminal
R109
4
Ground
5V
WKIA5796E
A
B
Continuity
Connector
Terminal
Connector
Terminal
R109
4
B142
29
Yes
A
—
Continuity
Connector
Terminal
R109
4
Ground
No
ALNIA0320GB
A
B
Continuity
Connector
Terminal
Connector
Terminal
R109
2
B142
8
Yes
ALNIA0322GB
AV-52
< DTC/CIRCUIT DIAGNOSIS >
[MID AUDIO]
FRONT DOOR SPEAKER
FRONT DOOR SPEAKER
Description
INFOID:0000000006166466
The audio unit sends audio signals to the front door speakers using the audio signal circuits.
Diagnosis Procedure
INFOID:0000000006166467
Regarding Wiring Diagram information, refer to
1.
HARNESS CHECK
1. Disconnect audio unit connector M165 and suspect speaker
connector.
2. Check continuity between audio unit harness connector M165
(A) and suspect speaker harness connector (B).
3. Check continuity between audio unit harness connector M165
(A) and ground.
Are continuity test results as specified?
YES
>> GO TO 2.
NO
>> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
2.
FRONT SPEAKER SIGNAL CHECK
A B
Continuity
Connector
Terminal
Connector
Terminal
M165
1
D12
2
Yes
2
1
3
D112
2
4
1
A
—
Continuity
Connector
Terminal
M165
1
Ground
No
2
3
4
ALNIA0702GB
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