Nissan Frontier D40. Manual - part 12

AV-40

< FUNCTION DIAGNOSIS >

[PREMIUM AUDIO (KING CAB)]

HANDS-FREE PHONE SYSTEM

Component Description

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Part name

Description

Audio unit

• Receives telephone voice signal from Bluetooth control unit
• Sends telephone voice and voice guidance signals to the speakers

Front door speaker

Receives telephone voice and voice guidance signals from the audio amp.

Front tweeter

Steering wheel audio control switches

• Start a voice recognition session
• Answer and end telephone calls
• Adjust the volume level

Microphone

Sends voice signals to Bluetooth control unit

Bluetooth control unit

Controls hands-free phone functions

Bluetooth antenna

Sends telephone voice signal to Bluetooth control unit

AV

DIAGNOSIS SYSTEM (AUDIO UNIT)

AV-41

< FUNCTION DIAGNOSIS >

[PREMIUM AUDIO (KING CAB)]

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DIAGNOSIS SYSTEM (AUDIO UNIT)

Component Function Check

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STARTING THE SELF-DIAGNOSIS MODE

1.

Turn ignition switch from OFF to ACC.

2.

Press and hold the “DISP/CLOCK” switch and turn the volume control dial clockwise or counterclockwise
for 30 clicks or more.

Then the self-diagnosis operates. A single beep indicates self-diagnosis mode is active.

3.

Initially, all display segments will be illuminated.

4.

Press each switch. When each switch is pressed, its name and communication code will be displayed
NOTE:
CD player LOAD and EJECT buttons are not included in this test and will not change the display when
pressed.

DIAGNOSIS FUNCTION 

• It can check for continuity of the switches by sounding the beep when each audio unit switch and steering

switch is pressed.

• It can check for continuity of harness between audio unit switch and steering switch.

EXITING THE SELF-DIAGNOSIS MODE

Turn ignition switch OFF. Then the self-diagnosis ends.

WKIA5819E

AV-42

< FUNCTION DIAGNOSIS >

[PREMIUM AUDIO (KING CAB)]

DIAGNOSIS SYSTEM (BLUETOOTH CONTROL UNIT)

DIAGNOSIS SYSTEM (BLUETOOTH CONTROL UNIT)

Diagnosis Description

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The Bluetooth control unit has two diagnostic checks. The first diagnostic check is performed automatically
every ignition cycle during control unit initialization. The second diagnostic check is performed by the techni-
cian using the steering wheel audio control switches prior to trouble diagnosis.

BLUETOOTH CONTROL UNIT INITIALIZATION CHECKS

• Internal control unit failure
• Bluetooth antenna connection open or shorted
• Steering wheel audio control switches [SEND(

)/END(

)] stuck closed

• Vehicle speed pulse count
• Microphone connection test (with playback to operator)
• Bluetooth inquiry check

OPERATION PROCEDURE

1.

Turn ignition switch to ACC or ON.

2.

Wait for the Bluetooth system to complete initialization. This may take up to 10 seconds.

3.

Press and hold the steering wheel audio control switch 
button for at least 5 seconds. The Bluetooth system will begin to
play a verbal prompt.

4.

While the prompt is playing, press and hold the steering wheel

audio control switch 

 button until you hear the “Diagnostics

mode” prompt. The Bluetooth system will sound a 5 second
beep.

5.

While the beep is sounding, press and hold the steering wheel

audio control switch 

 button again until you hear prompts.

6.

The Bluetooth system has now entered into the diagnostic
mode. Results of the diagnostic checks will be verbalized to the
technician. Refer to 

AV-42, "Work Flow"

.

7.

After the failure records are reported, an interactive microphone
test will be performed. Follow the voice prompt. If the micro-
phone test fails refer to 

AV-42, "Work Flow"

.

8.

Self-diagnosis mode is complete when the voice prompt says “All diagnostic functions completed”.

Work Flow

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Failure Message

Action

“Internal failure”

Replace Bluetooth control unit. Refer to 

AV-90, "Removal and Installation"

.

“Bluetooth antenna open”

1.

Inspect harness connection.

2.

Replace Bluetooth antenna. Refer to 

AV-90, "Removal and Installation"

.

“Bluetooth antenna shorted”

“Phone/Send for Hands Free System is stuck”

Check steering wheel audio control switches. Refer to 

AV-53, "Description"

.

“Phone/End for the Hands Free System is stuck”

“Microphone test” (failed interactive test)

1.

Inspect harness between Bluetooth control unit and microphone.

2.

Replace microphone. Refer to 

AV-92, "Removal and Installation"

.

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-43

< COMPONENT DIAGNOSIS >

[PREMIUM AUDIO (KING CAB)]

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COMPONENT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

AUDIO UNIT

AUDIO UNIT : Diagnosis Procedure

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Regarding Wiring Diagram information, refer to 

AV-65, "Wiring Diagram"

.

1.

CHECK FUSES

Check that the following fuses of the audio unit are not are not blown.

Are the fuses OK?

YES

>> GO TO 2

NO

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

2.

POWER SUPPLY CIRCUIT CHECK

1.

Disconnect audio unit connector M64. 

2.

Check voltage between the audio unit connector M64 and
ground.

Are the voltage results as specified?

YES

>> GO TO 3

NO

>> • Check connector housing for disconnected or loose terminals.

• Repair harness or connector.

3.

GROUND CIRCUIT CHECK

Inspect audio unit case ground.

Does case ground pass inspection?

YES

>> Inspection End.

NO

>> Repair audio unit case ground.

SATELLITE RADIO TUNER

SATELLITE RADIO TUNER : Diagnosis Procedure

INFOID:0000000005274893

Regarding Wiring Diagram information, refer to 

AV-65, "Wiring Diagram"

.

1.

CHECK FUSES

Check that the following fuses of the satellite radio tuner (factory installed) are not blown.

Unit

Terminals

Signal name

Fuse No.

Audio unit

6

Battery power

29

10

Ignition switch ACC or ON

4

(+)

(-)

OFF

ACC

ON

Connector

Terminal

M64

6

Ground

0V

Battery 
voltage

Battery 
voltage

10

Ground

Battery 
voltage

Battery 
voltage

Battery 
voltage

ALNIA0695GB