Nissan Altima L32. Manual - part 41

AV-156

< COMPONENT DIAGNOSIS >

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MICROPHONE SIGNAL CIRCUIT (COUPE)

Check signal between Bluetooth control unit harness connector B55

terminals 7 and 8.

Are voltage readings as specified?

YES

>> Replace Bluetooth control unit. Refer to 

AV-235, "Removal and Installation - Coupe"

.

NO

>> Replace microphone. Refer to 

AV-233, "Removal and Installation"

.

7 - 8:

When giving a voice

ALNIA0934GB

PKIB5037J

AV

MICROPHONE SIGNAL CIRCUIT (SEDAN)

AV-157

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

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MICROPHONE SIGNAL CIRCUIT (SEDAN)

Description

INFOID:0000000004206478

Voice signals are transmitted from the microphone to the Bluetooth control unit using the microphone signal

circuits.

Diagnosis Procedure

INFOID:0000000004206479

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-235,

"Removal and Installation - Sedan"

.

3.

CHECK MICROPHONE SIGNAL

A

B

Continuity

Connector

Terminal

Connector

Terminal

B126

7

R7

1

Yes

8

2

29

4

A

—

Continuity

Connector

Terminal

B126

7

Ground

No

8

29

WKIA5795E

4 - Ground

: Approx. 5V

WKIA5796E

AV-158

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

MICROPHONE SIGNAL CIRCUIT (SEDAN)

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-235, "Removal and Installation - Sedan"

.

NO

>> Replace microphone. Refer to 

AV-233, "Removal and Installation"

.

7 - 8:

When giving a voice

ALNIA0934GB

PKIB5037J

AV

AUDIO UNIT (COUPE)

AV-159

< ECU DIAGNOSIS >

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ECU DIAGNOSIS

AUDIO UNIT (COUPE)

Reference Value

INFOID:0000000004206480

TERMINAL LAYOUT

PHYSICAL VALUES - WITH BLUETOOTH

AWNIA0046ZZ

Terminal

 (Wire color)

Item

Signal in-

put/out-

put

Condition

Reference value

+

–

Ignition 

switch

Operation

1 

(B/P)

Ground

Amp. ON sig-
nal

Output

ON

–

More than approx. 6.5V

2 

(G)

3

 (R)

Audio sound 
signal front LH

Output

ON

Receive audio sig-
nal

4 

(GR/V)

5

 (W/L)

Audio sound 
signal rear LH

Output

ON

Receive audio sig-
nal

6 

(W/G)

Ground

Remote con-
trol A

Input

ON

Press SEEK 
DOWN switch.

0.7 V

Press SEEK UP 
switch.

1.3 V

Press  

switch.

2.0 V

Except for above.

3.3 V

7 

(V/Y)

Ground

ACC signal

Input

ON

Ignition switch 
ACC or ON

Battery voltage

10

–

Shield

–

–

–

Approx. 0V

SKIA0177E

SKIA0177E