Nissan Maxima. Instruction — part 52
AV-28
< DTC/CIRCUIT DIAGNOSIS >
[MONOCHROME DISPLAY - W/O BOSE]
POWER SUPPLY AND GROUND CIRCUIT
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 subwoofer amp connector.
3. Check voltage between subwoofer amp harness connector and ground.
Is battery voltage present?
YES
>> GO TO 3.
NO
>> Check harness between subwoofer amp and fuse.
3.
CHECK GROUND CIRCUIT
Check continuity between subwoofer amp harness connector and ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair harness or connector.
DISPLAY UNIT
DISPLAY UNIT : Diagnosis Procedure
INFOID:0000000009471171
Regarding Wiring Diagram information, refer to
AV-54, "Wiring Diagram - Without BOSE Audio system"
1.
CHECK FUSES
Check that the following fuses 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
Unit
Terminals
Signal name
Fuse No.
Subwoofer amp.
9
Ign switch ACC or ON
17
(+)
(-)
Voltage (approx.)
Connector
Terminal
B21
9
Ground
Battery voltage
(+)
(-)
Continuity
Connector
Terminal
B21
7
Ground
Yes
Unit
Terminals
Signal name
Fuse No.
Display unit
9
Battery power
24
8
Ignition switch ACC or ON
17
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-29
< DTC/CIRCUIT DIAGNOSIS >
[MONOCHROME DISPLAY - W/O BOSE]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
1. Turn ignition switch OFF.
2. Disconnect display unit connector.
3. Check voltage between the display unit 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 display unit harness connector and
ground.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Repair harness or connector.
BLUETOOTH® CONTROL UNIT
BLUETOOTH® CONTROL UNIT : Diagnosis Procedure
INFOID:0000000009471172
Regarding Wiring Diagram information, refer to
AV-54, "Wiring Diagram - Without BOSE Audio system"
.
1.
CHECK FUSE
Check that the following fuses of the Bluetooth
®
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
(+)
(-)
OFF
ACC
ON
Connector
Terminal
M109
9
Ground
Battery
voltage
Battery
voltage
Battery
voltage
8
Ground
0V
Battery
voltage
Battery
voltage
AWNIA1679ZZ
Connector
Terminal
—
Continuity
M109
3
Ground
Yes
AWNIA1680ZZ
Power source
Fuse No.
Battery
24
Ignition switch ACC or ON
17
Ignition switch ON or START
3
AV-30
< DTC/CIRCUIT DIAGNOSIS >
[MONOCHROME DISPLAY - W/O BOSE]
POWER SUPPLY AND GROUND CIRCUIT
Check voltage between Bluetooth
®
control unit harness connector
and ground.
Are the voltage results 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 B126.
3. Check continuity between Bluetooth
®
control unit harness con-
nector and ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair harness or connector.
MICROPHONE
MICROPHONE : Diagnosis Procedure
INFOID:0000000009471173
Regarding Wiring Diagram information, refer to
AV-54, "Wiring Diagram - Without BOSE Audio system"
1.
CHECK POWER SUPPLY CIRCUIT (MICROPHONE SIDE)
Check voltage between microphone harness connector and ground.
Is proper voltage present?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY CIRCUIT (CONTINUITY)
(+)
(-)
Ignition switch
position
Value (Approx.)
Connector
Terminal
B126
1
Ground
OFF
Battery voltage
2
ACC
3
ON
WKIA4389E
(+)
(-)
Continuity
Connector
Terminal
B126
4
Ground
Yes
23
AWNIA1681ZZ
(+)
(-)
Ignition switch po-
sition
Value (Approx.)
Connector
Terminal
R7
4
Ground
ON
5V
WKIA5796E
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-31
< DTC/CIRCUIT DIAGNOSIS >
[MONOCHROME DISPLAY - W/O BOSE]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
1. Turn ignition switch OFF.
2. Disconnect Bluetooth
®
control unit and microphone connectors.
3. Check continuity between microphone harness connector R7
(A) terminal 4 and Bluetooth
®
control unit harness connector
B126 (B) terminal 29.
4. Check continuity between microphone harness connector R7
(A) terminal 4 and ground.
Are continuity results as specified?
YES
>> Replace the Bluetooth
®
control unit. Refer to
AV-88, "Removal and Installation"
.
NO
>> Repair harness or connector.
3.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Bluetooth
®
control unit and microphone connectors.
3. Check continuity between Bluetooth
®
control unit harness con-
nector B126 (A) terminal 8 and microphone harness connector
R7 (B) terminal 2.
Is continuity present?
YES
>> Inspection End.
NO
>> Repair harness or connector.
A
B
Continuity
Connector
Terminal
Connector
Terminal
R7
4
B126
29
Yes
A
—
Continuity
Connector
Terminal
R7
4
Ground
No
ALNIA0132ZZ
A
B
Continuity
Connector
Terminal
Connector
Terminal
B126
8
R7
2
Yes
AWNIA1693ZZ
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