Nissan Altima L32. Instruction — part 10
AV-32
< COMPONENT DIAGNOSIS >
[BASE AUDIO]
REAR SPEAKER
REAR SPEAKER
Description
INFOID:0000000004206379
The audio unit sends audio signals to the rear speakers using the rear speaker circuits.
Diagnosis Procedure
INFOID:0000000004206380
1.
HARNESS CHECK
1. Disconnect audio unit connector M43 (A) and suspect speaker
connector.
2. Check continuity between audio unit harness connector M43 (A)
and suspect speaker harness connector (B).
3. Check continuity between audio unit harness connector M43 (A)
and ground.
Are the continuity results as specified?
YES
>> GO TO 2
NO
>> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
2.
REAR SPEAKER SIGNAL CHECK
A
B
Continuity
Connector
Terminal
Connector
Terminal
M43
4
B26
1
Yes
5
2
13
B44
1
14
2
A
—
Continuity
Connector
Terminal
M43
4
Ground
No
5
13
14
AWNIA0033ZZ
AV
REAR SPEAKER
AV-33
< COMPONENT DIAGNOSIS >
[BASE AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
1. Connect audio unit connector and rear tweeter connector.
2. Turn ignition switch to ACC.
3. Push “POWER” switch.
4. Check the signal between audio unit harness connector termi-
nals with CONSULT-III or oscilloscope.
Is the audio signal voltage as specified?
YES
>> Replace rear speaker. Refer to
NO
>> Replace audio unit. Refer to
(+)
(-)
Condition
Reference
signal
Connec-
tor
Terminal
Terminal
M43
4
5
Receive
audio sig-
nal
13
14
AWNIA0034ZZ
SKIA0177E
AV-34
< COMPONENT DIAGNOSIS >
[BASE AUDIO]
STEERING SWITCH
STEERING SWITCH
Description
INFOID:0000000004206381
When one of the steering wheel audio control switches is pushed, the resistance in steering switch circuit
changes depending on which button is pushed.
Diagnosis Procedure
INFOID:0000000004206382
1.
CHECK STEERING SWITCH RESISTANCE
1. Disconnect steering switch connector M88.
2. Check resistance between steering switch connector terminals.
Do the steering switches check OK?
YES
>> GO TO 2
NO
>> Replace steering switch. Refer to
AV-225, "Removal and Installation"
2.
CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect audio unit connector M43 and spiral cable connector
M30.
3. Check continuity between audio unit harness connector M43 (A)
and spiral cable harness connector M30 (B).
4. Check continuity between audio unit connector M43 (A) and ground.
Are the continuity results as specified?
YES
>> GO TO 3
NO
>> Repair harness.
3.
SPIRAL CABLE CHECK
Terminal
Signal name
Condition
Resistance
(
Ω)
(Approx.)
15
17
Seek (down)
Depress (station) down switch.
165
Volume (down)
Depress volume down switch.
487
14
Seek (up)
Depress (station) up switch.
165
Source
Depress source switch.
0
Volume (up)
Depress volume up switch.
487
AWNIA0035ZZ
A
B
Continuity
Connector
Terminal
Connector
Terminal
M43
6
M30
31
Yes
16
24
15
33
A
—
Continuity
Connector
Terminal
M43
6
Ground
No
15
16
AWNIA0036ZZ
AV
STEERING SWITCH
AV-35
< COMPONENT DIAGNOSIS >
[BASE AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
1. Disconnect spiral cable connector M88.
2. Check continuity between spiral cable harness connector M30
(A) and M88 (B).
Does the spiral cable check OK?
YES
>> Inspection End.
NO
>> Replace spiral cable. Refer to
SR-8, "Removal and Installation"
A
B
Continuity
Connector
Terminal
Connector
Terminal
M30
24
M88
14
Yes
31
15
33
17
ALNIA0931GB
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