Nissan Maxima. Manual — part 56
AV-44
< DTC/CIRCUIT DIAGNOSIS >
[MONOCHROME DISPLAY - W/O BOSE]
MICROPHONE SIGNAL CIRCUIT
MICROPHONE SIGNAL CIRCUIT
Description
INFOID:0000000009471184
Voice signals are transmitted from the microphone to the Bluetooth
®
control unit using the microphone signal
circuits.
Diagnosis Procedure
INFOID:0000000009471185
Regarding Wiring Diagram information, refer to
AV-54, "Wiring Diagram - Without BOSE Audio system"
1.
CHECK HARNESS BETWEEN BLUETOOTH
®
CONTROL UNIT AND MICROPHONE
1. Turn ignition switch OFF.
2. Disconnect Bluetooth
®
control unit connector and microphone
connector.
3. Check continuity between Bluetooth
®
control unit harness con-
nector B126 (A) and microphone harness connector R7 (B).
4. Check continuity between Bluetooth
®
control unit harness connector B126 (A) and ground.
Are the continuity test results as specified?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK MICROPHONE POWER SUPPLY
1. Connect Bluetooth
®
control unit connector and microphone con-
nector.
2. Turn ignition switch ON.
3. Check voltage between microphone harness connector R7 ter-
minal 4 and ground.
Is voltage reading approx. 5 volts?
YES
>> GO TO 3.
NO
>> Replace Bluetooth
®
control unit. Refer to
AV-88, "Removal and Installation"
.
3.
CHECK MICROPHONE SIGNAL
A
B
Continuity
Connector
Terminal
Connector
Terminal
B126
7
R7
1
Yes
8
2
29
4
WKIA5795E
A
—
Continuity
Connector
Terminal
B126
7
Ground
No
8
29
(+)
(-)
Voltage (approx.)
Connector
Terminal
R7
4
Ground
5V
WKIA5796E
AV
MICROPHONE SIGNAL CIRCUIT
AV-45
< DTC/CIRCUIT DIAGNOSIS >
[MONOCHROME DISPLAY - W/O BOSE]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
Check signal between Bluetooth
®
control unit harness connector
B126 terminals 7 and 8.
Are voltage readings as specified?
YES
>> Replace Bluetooth
®
control unit. Refer to
AV-88, "Removal and Installation"
.
NO
>> Replace microphone. Refer to
AV-86, "Removal and Installation"
.
Connector
(+)
(-)
Reference signal
Terminal
Terminal
B126
7
8
While talking into microphone
ALNIA0934GB
PKIB5037J
AV-46
< ECU DIAGNOSIS INFORMATION >
[MONOCHROME DISPLAY - W/O BOSE]
AUDIO UNIT
ECU DIAGNOSIS INFORMATION
AUDIO UNIT
Reference Value
INFOID:0000000009471186
TERMINAL LAYOUT
PHYSICAL VALUES
AWNIA1685ZZ
Terminal
(Wire color)
Item
Signal in-
put/out-
put
Condition
Reference value (approx)
+
–
Ignition
switch
Operation
2
(L)
3
(B/W)
Audio sound
signal front LH
Output
ON
Receive audio sig-
nal
4
(LG)
5
(B/Y)
Audio sound
signal rear LH
Output
ON
Receive audio sig-
nal
6
(W/G)
Ground
Steering
switch signal
A
Input
ON
Depress SOURCE
switch.
0V
Depress
switch.
0.7V
Depress
switch.
1.3V
Depress
switch.
2.0V
Except for above.
3.3V
7
(V/Y)
Ground
ACC signal
Input
ON
Ignition switch
ACC or ON
Battery voltage
9
(R/L)
8
(R/Y)
ILL signal
Input
ON
Headlamps ON
Battery voltage
SKIA0177E
SKIA0177E
AV
AUDIO UNIT
AV-47
< ECU DIAGNOSIS INFORMATION >
[MONOCHROME DISPLAY - W/O BOSE]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
11
(BR)
12
(B/R)
Audio sound
signal front
RH
Output
ON
Receive audio sig-
nal
13
(O)
14
(B/P)
Audio sound
signal rear RH
Output
ON
Receive audio sig-
nal
15
(L/B)
–
Remote con-
trol ground
Input
–
–
–
16
(GR/L)
Ground
Steering
switch signal
B
Input
ON
Depress volume
DOWN switch.
0.7V
Depress volume
UP switch.
1.3V
Depress
switch.
2.0V
Except for above.
3.3V
19
(Y/R)
Ground
Battery power
Input
–
–
Battery voltage
21
(G)
22
(R)
Multimedia
CAN
Input
–
–
23
(W/B)
Ground
Ladder out 1
Output
ON
Depress SOURCE
switch.
0V
Depress
switch.
0.7V
Depress
switch.
1.3V
Depress
switch.
2.0V
Except for above.
3.3V
24
(GR/R)
Ground
Ladder out 2
Output
ON
Depress volume
DOWN switch.
0.7V
Depress volume
UP switch.
1.3V
Depress
switch.
2.0V
Except for above.
3.3V
26
–
Shield
–
–
–
–
Terminal
(Wire color)
Item
Signal in-
put/out-
put
Condition
Reference value (approx)
+
–
Ignition
switch
Operation
SKIA0177E
SKIA0177E
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