Nissan Frontier. Instruction — part 55
AV-212
< DTC/CIRCUIT DIAGNOSIS >
[DISPLAY AUDIO WITH AMPLIFIER]
REAR TWEETER
YES
>> Replace audio amplifier. Refer to
AV-234, "Removal and Installation"
.
NO
>> Replace audio unit. Refer to
AV-233, "Removal and Installation"
.
AV
SUBWOOFER
AV-213
< DTC/CIRCUIT DIAGNOSIS >
[DISPLAY AUDIO WITH AMPLIFIER]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
SUBWOOFER
Diagnosis Procedure
INFOID:0000000009482158
Regarding Wiring Diagram information, refer to
.
1.
CONNECTOR CHECK
Check the audio unit, audio amplifier and subwoofer connectors for the following:
• Proper connection
• Damage
• Disconnected or loose terminals
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Repair the terminals or connectors.
2.
CHECK SUBWOOFER SIGNAL CIRCUIT CONTINUITY
1. Disconnect audio amplifier connector B158 and subwoofer connector.
2. Check continuity between audio amplifier connector B158 and subwoofer connector.
3. Check continuity between audio amplifier connector B158 and ground.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Repair or replace harness or connectors.
3.
CHECK SUBWOOFER SIGNAL
1. Connect audio amplifier connector B158 and subwoofer connector.
2. Turn ignition switch to ACC.
3. Push audio unit POWER switch.
4. Check signal between the terminals of audio amplifier connector B158.
Audio amplifier
Subwoofer
Continuity
Connector
Terminal
Connector
Terminal
B158
2
B72
1
Yes
18
2
3
3
19
4
Audio amplifier
Ground
Continuity
Connector
Terminal
B158
2
—
No
18
3
19
Audio amplifier connector B158
Condition
Reference value
(+)
(
−)
Terminal
Terminal
AV-214
< DTC/CIRCUIT DIAGNOSIS >
[DISPLAY AUDIO WITH AMPLIFIER]
SUBWOOFER
Is the inspection result normal?
YES
>> Replace subwoofer. Refer to
AV-239, "Removal and Installation"
NO
>> GO TO 4.
4.
CHECK PRE-AMP SIGNAL CIRCUIT CONTINUITY
1. Disconnect audio unit connector M46 and audio amplifier connector B159.
2. Check continuity between audio unit connector M46 and audio amplifier connector B159.
3. Check continuity between audio unit connector M46 and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace harness or connectors.
5.
CHECK PRE-AMP SIGNAL
1. Connect audio unit connector M46 and audio amplifier connector B159.
2. Turn ignition switch to ACC.
3. Push audio unit POWER switch.
4. Check signal between the terminals of audio unit connector M46.
Is the inspection result normal?
2
18
Audio signal output
3
19
SKIA0177E
Audio unit
Audio amplifier
Continuity
Connector
Terminal
Connector
Terminal
M46
4
B159
24
Yes
5
8
13
23
14
7
Audio unit
Ground
Continuity
Connector
Terminal
M46
4
—
No
5
13
14
Audio unit connector M46
Condition
Reference value
(+)
(
−)
Terminal
Terminal
4
5
Audio signal output
13
14
SKIA0177E
AV
SUBWOOFER
AV-215
< DTC/CIRCUIT DIAGNOSIS >
[DISPLAY AUDIO WITH AMPLIFIER]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
YES
>> Replace audio amplifier. Refer to
AV-234, "Removal and Installation"
.
NO
>> Replace audio unit. Refer to
AV-233, "Removal and Installation"
.
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