Nissan Altima HL32 Hybrid. Manual - part 5

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DIAGNOSIS SYSTEM (AUDIO UNIT)

DIAGNOSIS SYSTEM (AUDIO UNIT)

Diagnosis Description

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Self-diagnosis mode can check the following items.

• Audio unit hardware/software versions

• Continuity of each speaker channel

• Continuity of each audio unit switch

OPERATION PROCEDURE

1. Turn ignition switch to the ACC position.

2. Turn the audio unit off.

3. While pressing the “AUDIO” button, turn the volume control dial

clockwise or counterclockwise 30 clicks or more. When the self-

diagnosis mode is started, a short beep will be heard.

4. Initially, all display segments will be illuminated.

Version Check

1. Press the “AUDIO” switch to enter version diagnostics. “Soft-

ware” (audio software version) is displayed.

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DIAGNOSIS SYSTEM (AUDIO UNIT)

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2. Press the “AUDIO” switch again to display the “Hardware”

(audio hardware version).

3. Press the “AUDIO” switch again to display the “CD Mech” (CD

mechanism version).

4. Press the “AUDIO” switch again to display the “SDARS” (satel-

lite radio version).

Channel Check Diagnostics

When all segments are illuminated, press the “TUNE” up switch to

enter channel check diagnostics. The self-diagnostic function will

then send a tone to each channel (FL, RL, RR, FR) for 1 second.

Button Check Diagnostics

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DIAGNOSIS SYSTEM (AUDIO UNIT)

When all segments are illuminated, press the “TUNE” down switch to

enter button check diagnostics. When each audio unit switch is

pressed, a tone will sound and the switch name will be displayed.

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POWER SUPPLY AND GROUND CIRCUIT

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COMPONENT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

AUDIO UNIT
AUDIO UNIT : Diagnosis Procedure

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1.

CHECK FUSES

Check that the following fuses 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 M43. 

2. Check voltage between the audio unit connector M43 and

ground.

Are the voltage results as specified?

YES

>> GO TO 3

NO

>> • Check connector housings 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

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1.

CHECK FUSES

Check that the following fuses 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.

Unit

Terminals

Signal name

Fuse No.

Audio unit

19

Battery power

24

7

Ignition switch ACC or ON

19

Unit

Terminal No.

OFF

ACC

ON

(+)

(-)

Connector

Terminal

Audio unit

M43

19

Ground

Battery 
voltage

Battery 
voltage

Battery 
voltage

7

Ground

0V

Battery 
voltage

Battery 
voltage

WKIA5769E

Unit

Terminals

Signal name

Fuse No.

Satellite radio tuner (factory in-
stalled)

32

Battery power

24

36

Ignition switch ACC or ON

19