Nissan Maxima. Manual - part 111

AV-264

< DTC/CIRCUIT DIAGNOSIS >

[COLOR DISPLAY - W/O BOSE]

MICROPHONE SIGNAL CIRCUIT

MICROPHONE SIGNAL CIRCUIT

Description

INFOID:0000000010064913

Voice signals are transmitted from the microphone to the Bluetooth

®

 control unit using the microphone signal

circuits.

Diagnosis Procedure

INFOID:0000000010064914

Regarding Wiring Diagram information, refer to 

AV-282, "Wiring Diagram - Without BOSE Audio System With-

out Navigation 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 B131 (A) and microphone harness connector R7 (B).

4. Check continuity between Bluetooth

®

 control unit harness connector B131 (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-333, "Removal and Installation"

.

3.

CHECK MICROPHONE SIGNAL

A

B

Continuity

Connector

Terminal

Connector

Terminal

B131

7

R7

1

Yes

8

2

29

4

A

—

Continuity

Connector

Terminal

B131

7

Ground

No

8

29

WKIA5795E

(+)

(-)

Voltage (Approx.)

Connector

Terminal

R7

4

Ground

5V

WKIA5796E

AV

MICROPHONE SIGNAL CIRCUIT

AV-265

< DTC/CIRCUIT DIAGNOSIS >

[COLOR DISPLAY - W/O BOSE]

C

D

E

F

G

H

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J

K

L

M

B

A

O

P

Check signal between Bluetooth

®

 control unit harness connector

B131 terminals 7 and 8.

Are voltage readings as specified?

YES

>> Replace Bluetooth

®

 control unit. Refer to 

AV-333, "Removal and Installation"

.

NO

>> Replace microphone. Refer to 

AV-331, "Removal and Installation"

.

Connector

(+)

(-)

Reference signal

Terminal

Terminal

B131

7

8

While talking into microphone

ALNIA0934GB

PKIB5037J

AV-266

< ECU DIAGNOSIS INFORMATION >

[COLOR DISPLAY - W/O BOSE]

AV CONTROL UNIT

ECU DIAGNOSIS INFORMATION

AV CONTROL UNIT

Reference Value

INFOID:0000000010064915

VALUES ON THE DIAGNOSIS TOOL

CONSULT data monitor item

TERMINAL LAYOUT

PHYSICAL VALUES

Display Item

Dis-
play

Vehicle status

Remarks

VHCL SPD SIG

ON

Vehicle speed >0 km/h (0 MPH)

Changes in indication may be delayed. This is nor-
mal.

OFF

Vehicle speed =0 km/h (0 MPH)

PKB SIG

ON

Parking brake is applied.

Changes in indication may be delayed. This is nor-
mal.

OFF

Parking brake is released.

ILLUM SIG

ON

Block the light beam from the auto 
light optical sensor when the light SW 
is ON .

—

OFF

Expose the auto light optical sensor 
to light when the light SW is OFF or 
ON.

IGN SIG

ON

Ignition switch ON

—

OFF

Ignition switch in ACC position

REV SIG

ON

Selector lever in R position

Changes in indication may be delayed. This is nor-
mal.

OFF

Selector lever in any position other 
than R

AWNIA3230ZZ

AV

AV CONTROL UNIT

AV-267

< ECU DIAGNOSIS INFORMATION >

[COLOR DISPLAY - W/O BOSE]

C

D

E

F

G

H

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J

K

L

M

B

A

O

P

Terminal

(Wire color)

Description

Condition

Reference value

(Approx.)

+

–

Signal name

Input/

Output

2 

(L)

3

 (B/W)

Audio sound signal front LH

Output

ON

Receive audio signal

4 

(LG)

5 

(B/Y)

Audio sound signal rear LH

Output

ON

Receive audio signal

6 

(W/G)

15 

(L/B)

Steering switch signal A

Input

ON

Depress volume DOWN 
switch.

0.7V

Depress volume UP switch.

1.3V

Depress  

  switch.

2.0V

Except for above.

3.3V

7

(V/Y)

Ground ACC power supply

Input

Ignition 

switch 

ACC

—

Battery voltage

9

(R/L)

Ground Illumination signal

Input

OFF

Lighting switch is OFF.

0V

Lighting switch is ON.

Battery voltage

11 

(BR)

12 

(B/R)

Audio sound signal front 
RH

Output

ON

Receive audio signal

13

 (LG)

14

 (O)

Audio sound signal rear RH

Output

ON

Receive audio signal

16 

(GR/L)

15 

(L/B)

Steering switch signal B

Input

ON

Depress SOURCE switch.

0V

Depress  

switch.

0.7V

Depress  

switch.

1.3V

Depress 

  switch.

2.0V

Except for above.

3.3V

19

(Y/R)

Ground Battery power supply

Input

Ignition 

switch 

OFF

—

Battery voltage

SKIA0177E

SKIA0177E

SKIA0177E

SKIA0177E