Nissan Murano Z51. Instruction — part 60
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-19
< DTC/CIRCUIT DIAGNOSIS >
[BASE AUDIO]
C
D
E
F
G
H
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J
K
L
M
B
A
O
P
DTC/CIRCUIT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
AUDIO UNIT
AUDIO UNIT : Diagnosis Procedure
INFOID:0000000005528417
1.
CHECK FUSE
Check for blown fuses.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Be sure to eliminate the cause of malfunction before installing new fuse.
2.
CHECK POWER SUPPLY CIRCUIT
Check voltage between audio unit harness connectors and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Check harness between audio unit and fuse.
Power source
Fuse No.
Battery
35
Ignition switch ACC or ON
19
Signal name
Connector No.
Terminal No.
Ignition switch position
Value (Approx.)
Battery power supply
M46
19
OFF
Battery voltage
ACC power supply
7
ACC
AV-20
< DTC/CIRCUIT DIAGNOSIS >
[BASE AUDIO]
STEERING SWITCH SIGNAL A CIRCUIT
STEERING SWITCH SIGNAL A CIRCUIT
Description
INFOID:0000000005528418
Transmits the steering switch signal to audio unit.
Diagnosis Procedure
INFOID:0000000005528419
1.
CHECK STEERING SWITCH SIGNAL A CIRCUIT
1.
Disconnect audio unit connector and spiral cable connector.
2.
Check continuity between audio unit harness connector and spiral cable harness connector.
3.
Check continuity between audio unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK SPIRAL CABLE
Check spiral cable.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace spiral cable.
3.
CHECK AUDIO UNIT VOLTAGE
1.
Connect audio unit connector and spiral cable connector.
2.
Turn ignition switch ON.
3.
Check voltage between audio unit harness connector terminals.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace audio unit.
4.
CHECK STEERING SWITCH
1.
Turn ignition switch OFF.
2.
Check steering switch. Refer to
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace steering switch.
Audio unit
Spiral cable
Continuity
Connector
Terminal
Connector
Terminal
M46
6
M33
24
Existed
Audio unit
—
Continuity
Connector
Terminal
M46
6
Ground
Not existed
(+)
(
−
)
Voltage
Audio unit
Connector
Terminal
Connector
Terminal
M46
6
M46
15
Approx 5.0 V
AV
STEERING SWITCH SIGNAL A CIRCUIT
AV-21
< DTC/CIRCUIT DIAGNOSIS >
[BASE AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
Component Inspection
INFOID:0000000005528420
Measure the resistance between the steering switch connector ter-
minals.
Standard
JSNIA1145GB
Steering switch
Condition
Resistance
Ω
Con-
nector
Termi-
nals
Con-
nector
Termi-
nal
M303
14
M303
17
SEEK DOWN switch
ON
315 – 327
SEEK UP switch ON
119 – 123
SOURCE switch ON
0
15
VOL UP switch ON
119 – 123
VOL DOWN switch ON
0
AV-22
< DTC/CIRCUIT DIAGNOSIS >
[BASE AUDIO]
STEERING SWITCH SIGNAL B CIRCUIT
STEERING SWITCH SIGNAL B CIRCUIT
Description
INFOID:0000000005528421
Transmits the steering switch signal to audio unit.
Diagnosis Procedure
INFOID:0000000005528422
1.
CHECK STEERING SWITCH SIGNAL B CIRCUIT
1.
Disconnect audio unit connector and spiral cable connector.
2.
Check continuity between audio unit harness connector and spiral cable harness connector.
3.
Check continuity between audio unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK SPIRAL CABLE
Check spiral cable.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace spiral cable.
3.
CHECK AUDIO UNIT VOLTAGE
1.
Connect audio unit connector and spiral cable connector.
2.
Turn ignition switch ON.
3.
Check voltage between audio unit harness connector terminals.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace audio unit.
4.
CHECK STEERING SWITCH
1.
Turn ignition switch OFF.
2.
Check steering switch. Refer to
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace steering switch.
Audio unit
Spiral cable
Continuity
Connector
Terminal
Connector
Terminal
M46
16
M33
31
Existed
Audio unit
—
Continuity
Connector
Terminal
M46
16
Ground
Not existed
(+)
(
−
)
Voltage
Audio unit
Connector
Terminal
Connector
Terminal
M46
16
M46
15
Approx 5.0 V
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