Infiniti M35/M45 Y50. Manual - part 178

DIAGNOSIS SYSTEM

AV-89

[WITHOUT MOBILE ENTERTAINMENT SYSTEM]

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AV

DIAGNOSIS RESULT

Check the applicable display in the following table, and then repair the malfunctioning parts.

Control Unit Is Red, Gray, or Yellow

Connection Line Between Units Is Yellow (Only 1 Line)

Switch color

Description

Possible malfunction/Action to take

Red

AV (NAVI) control unit malfunction is detected

Replace AV (NAVI) control unit
Refer to 

AV-131, "AV (NAVI) Control Unit"

Yellow

 (With NAVI)

●

Malfunction is detected on DVD-ROM drive pickup 
lens in NAVI control unit

●

There is dirt and damage on the map disc

●

Map disc

●

NAVI control unit

Gray

 (With NAVI)

DVD-ROM not inserted is detected

Insert map disc

Applicable parts

Description

Probable malfunction location

Control unit to Camera Cont.

Camera-connection recognition signal malfunc-
tion is detected

●

Camera control unit power supply and ground 
circuit

●

Camera-connection recognition signal circuit

●

AV (NAVI) control unit

●

Camera control unit

Control unit to GPS Antenna

GPS antenna connection malfunction is detected

●

GPS antenna feeder

●

GPS antenna

●

NAVI control unit

Control unit to DVD deck

●

DVD player power supply and ground circuit 
malfunction is detected

●

Malfunction is detected on communication sig-
nal between DVD player and AV (NAVI) control 
unit

●

DVD player power supply and ground circuit

●

DVD player

●

AV (NAVI) control unit

Control unit to Amplifier 
(BOSE system)

●

BOSE amp power supply and ground circuit 
malfunction is detected

●

Malfunction is detected on communication sig-
nal between BOSE amp and AV (NAVI) control 
unit

●

BOSE amp power supply and ground circuit

●

BOSE amp

●

AV (NAVI) control unit

Control unit to Audio unit
(BOSE system)

●

Audio unit power supply and ground circuit mal-
function is detected

●

Malfunction is detected on communication cir-
cuit between audio unit and BOSE amp

●

Malfunction is detected on communication sig-
nal between audio unit and AV (NAVI) control 
unit

●

Audio unit power supply and ground circuit

●

Communication circuit between BOSE amp 
and audio unit

●

Audio unit

●

BOSE amp

●

AV (NAVI) control unit

AV-90

[WITHOUT MOBILE ENTERTAINMENT SYSTEM]

DIAGNOSIS SYSTEM

Connection Line Between Units Is Yellow (2 or More Lines)

When 2 or more connection lines between control unit (AV control unit, NAVI control) and each unit are dis-
played in yellow, these communication system lines may be open or shorted. The malfunctioning parts can be
detected by the combination of the connection lines displayed in yellow.

Applicable parts

Description

Probable malfunction location

Control unit to 

●

Amplifier

●

Audio unit

Base system

●

Audio unit power supply and ground circuit mal-
function is detected

●

Malfunction is detected on communication cir-
cuit between multifunction switch and audio unit

●

Malfunction is detected on communication sig-
nal between audio unit and AV (NAVI) control 
unit

●

Audio unit power and ground circuit

●

Communication circuit between multifunction 
switch and audio unit

●

Multifunction switch

●

Audio unit

●

AV (NAVI) control unit

BOSE system

●

Malfunction is detected on communication cir-
cuit between multifunction switch and camera 
control unit

●

Malfunction is detected on communication cir-
cuit between camera control unit and BOSE 
amp

●

Communication circuit between camera control 
unit and BOSE amp

●

Multifunction switch

●

Camera control unit

●

BOSE amp

DIAGNOSIS SYSTEM

AV-91

[WITHOUT MOBILE ENTERTAINMENT SYSTEM]

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AV

Confirmation/Adjustment Mode

NKS0048X

1.

Start the diagnosis function, and then select “Confirmation/
Adjustment”.

2.

Select each screen switch of Confirmation/Adjustment screen to
display the relevant diagnosis screen. Press the “BACK” switch
to return to the initial screen of Confirmation/Adjustment.

DISPLAY DIAGNOSIS

If RGB signal is malfunctioning, the tint of the color bar display is as follows.

SKIB3660E

SKIB3661E

SKIB3662E

R (red) signal error

: Light blue (Cyan) tint

G (green) signal error

: Purple (Magenta) tint

B (blue) signal error

: Yellow tint

AV-92

[WITHOUT MOBILE ENTERTAINMENT SYSTEM]

DIAGNOSIS SYSTEM

VEHICLE SIGNALS

A comparison check can be made of each actual vehicle signal and
the signals recognized by the system.

SPEAKER TEST

When selecting “Speaker Test”, speaker diagnosis screen is dis-
played. When pressing “Start”, test tone emits from the speaker. At
that time, when pressing “Start”, test tone emits from next speaker.
Then, when pressing the “End”, test tone stops.

NOTE:
The frequency of test tone emitted from each speaker is as follows.

CLIMATE CONTROL

For details, refer to 

ATC-56, "Self-diagnosis Function"

 .

SKIB3663E

Diagnosis item

Dis-
play

Vehicle status

Remarks

Vehicle speed

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)

—

Ignition switch in ACC position

Parking brake

ON

Parking brake is applied.

OFF

Parking brake is released.

Lights

ON

Light switch ON

–

OFF

Light switch OFF

Ignition

ON

Ignition switch ON

–

OFF

Ignition switch in ACC position

Reverse

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

—

Ignition switch in ACC position

Tweeter

: 3 kHz

Front door speaker

: 300 Hz

Rear door speaker

: 1 kHz

Rear surround speaker

: 1 kHz

Center speaker

: 1 kHz

Woofer

: 100 Hz

Seat speaker

: 1 kHz

SKIB3664E