Nissan Sentra. Manual — part 94
AV-368
< DTC/CIRCUIT DIAGNOSIS >
[NAVIGATION WITH BOSE]
U12B1 POWER SUPPLY VOLTAGE
U12B1 POWER SUPPLY VOLTAGE
DTC Logic
INFOID:0000000009759047
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000009759048
1.
CHECK CHARGING SYSTEM
Check the vehicle charging system. Refer to
CHG-14, "Work Flow (With EXP-800 NI or GR8-1200 NI)"
CHG-17, "Work Flow (Without EXP-800 NI or GR8-1200 NI)"
.
Is the inspection result normal?
YES
>> Replace the AV control unit. Refer to
AV-406, "Removal and Installation"
.
NO
>> Repair or replace the malfunctioning components.
CONSULT Display
DTC Detection Condition
Possible Cause
Supply Voltage Goes High >
16V for 20s
[U12B1]
AV control unit supply voltage exceeds upper lim-
its.
Charging system malfunction.
AV
U1310 AV CONTROL UNIT
AV-369
< DTC/CIRCUIT DIAGNOSIS >
[NAVIGATION WITH BOSE]
C
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B
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U1310 AV CONTROL UNIT
DTC Logic
INFOID:0000000009759049
DTC DETECTION LOGIC
CONSULT Display
DTC Detection Condition
Possible Cause
CONTROL UNIT (AV)
[U1310]
Error during CAN controller hardware initializa-
tion (MCAN).
Replace AV control unit if malfunction occurs
constantly.
Refer to
AV-406, "Removal and Installation"
.
AV-370
< DTC/CIRCUIT DIAGNOSIS >
[NAVIGATION WITH BOSE]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
AV CONTROL UNIT
AV CONTROL UNIT : Diagnosis Procedure
INFOID:0000000009759050
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSE
Check that the following fuses are not blown.
Are the fuses blown?
YES
>> Replace the blown fuse after repairing the affected circuit.
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AV control unit connectors M100 and M101.
3. Check voltage between AV control unit connectors M100 and M101 and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness or connectors.
3.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between AV control unit connector M100 and ground.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Repair or replace harness or connectors.
BOSE SPEAKER AMP
BOSE SPEAKER AMP : Diagnosis Procedure
INFOID:0000000009759051
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSE
Terminal No.
Signal name
Fuse No.
7
ACC power supply
18 (10A)
19
Battery power supply
26 (15A)
37
Ignition power supply
5 (10A)
AV control unit
Ground
Condition
Voltage
(Approx.)
Connector
Terminal
M100
19
—
Ignition switch: OFF
Battery voltage
7
Ignition switch: ON
M101
37
AV control unit
Ground
Continuity
Connector
Terminal
M100
20
—
Yes
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-371
< DTC/CIRCUIT DIAGNOSIS >
[NAVIGATION WITH BOSE]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
Check that the following fuses are not blown.
Are the fuses blown?
YES
>> Replace the blown fuse after repairing the affected circuit.
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Bose speaker amp. connector B44.
3. Check voltage between Bose speaker amp. connector B44 and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness or connectors.
3.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Bose speaker amp. connector B44.
3. Check continuity between Bose speaker amp. connector B44 and ground.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Repair or replace harness or connectors.
Terminal No.
Signal name
Fuse No.
27
Battery power supply
23 (15A)
28
24 (15A)
Bose speaker amp.
Ground
Condition
Voltage
(Approx.)
Connector
Terminal
B44
27
—
Ignition switch: OFF
Battery voltage
28
Bose speaker amp.
Ground
Continuity
Connector
Terminal
B44
26
—
Yes
31
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