Infiniti Q45. Manual — part 172

NAVIGATION SYSTEM

AV-117

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AV

PANEL SW
[ABNORMAL CONNECTION]

Multifunction switch power supply and
ground circuit malfunction is detected

1. Check multifunction switch power supply and

ground circuit.

2. If the results from the above checkup show no mal-

function, replace multifunction switch.

●

AUDIO HEAD UNIT
[ABNORMAL CONNECTION]

●

BOSE AMP
[ABNORMAL CONNECTION]

Malfunction is detected on communication
signal between multifunction switch and
audio unit

1. Check communication circuit between multifunction

switch and audio unit.

2. If the results from the above checkup show no mal-

function, replace either multifunction switch or audio
unit, and then start self-diagnosis.

3. If self-diagnosis results still show any malfunction,

replace the other unit.

AIR COMP RECEIVER
[ABNORMAL CONNECTION]

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Low tire pressure warning control unit
power supply and ground circuit mal-
function is detected

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Malfunction is detected on communica-
tion signal between multifunction switch
and low tire pressure warning control
unit

1. Check low tire pressure warning control unit power

supply and ground circuit.

2. Check communication circuit between multifunction

switch and low tire pressure warning control unit.

3. If the results from the above checkup show no mal-

function, replace either multifunction switch or low
tire pressure warning control unit, and then start
self-diagnosis.

4. If self-diagnosis results still show any malfunction,

replace the other unit.

BOSE AMP
[ABNORMAL CONNECTION]

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BOSE speaker amp. power supply and
ground circuit malfunction is detected

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Malfunction is detected on communica-
tion signal between audio unit and BOSE
speaker amp.

1. Check BOSE speaker amp. power supply and

ground circuit.

2. Check communication circuit between audio unit

and BOSE speaker amp.

3. If the results from the above checkup show no mal-

function, replace either audio unit or BOSE speaker
amp., and then start self-diagnosis.

4. If self-diagnosis results still show any malfunction,

replace the other unit.

AUDIO HEAD UNIT
[ABNORMAL CONNECTION]

Audio unit power supply and ground circuit
malfunction is detected

1. Check audio unit power supply circuit.

2. If the results from the above checkup show no mal-

function, replace audio unit.

Error item

Possible cause

Action to take

AV-118

NAVIGATION SYSTEM

CD CHANGER
[ABNORMAL CONNECTION]

Without satellite radio

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CD auto changer power supply and
ground circuit malfunction is detected

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Malfunction is detected on communica-
tion signal [REQ (CHG-AUDIO), Tx and
RX] between audio unit and CD auto
changer

1. Check CD auto changer power supply and ground

circuit.

2. Check communication circuit [REQ (CHG-AUDIO),

Tx and RX] between audio unit and CD auto
changer.

3. Check communication signal [REQ (CHG-AUDIO),

Tx and RX] between audio unit and CD auto
changer.

4. If the results from the above checkup show no mal-

function, replace either audio unit or CD auto
changer, and then start self-diagnosis.

5. If self-diagnosis results still show any malfunction,

replace the other unit.

With satellite radio

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CD auto changer power supply and
ground circuit malfunction is detected

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Satellite radio tuner power supply and
ground circuit malfunction is detected

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Malfunction is detected on communica-
tion signal [REQ (CHG-AUDIO), REQ
(SAT-AUDIO), Tx and RX] between
audio unit and satellite radio tuner

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Malfunction is detected on control signal
(CONT) between audio unit and satellite
radio tuner

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Malfunction is detected on communica-
tion signal [REQ (CHG-AUDIO), Tx and
Rx] between satellite radio tuner and CD
auto changer

1. Check CD auto changer power supply and ground

circuit.

2. Check satellite radio tuner power supply and ground

circuit.

3. Check communication circuit [REQ (CHG-AUDIO),

REQ (SAT-AUDIO), Tx and RX] between audio unit
and satellite radio tuner.

4. Check control signal circuit (CONT) between audio

unit and satellite radio tuner.

5. Check communication circuit [REQ (CHG-AUDIO),

Tx and Rx] between satellite radio tuner and CD
auto changer.

6. Check communication signal [REQ (CHG-AUDIO),

REQ (SAT-AUDIO), Tx and RX] between audio unit
and satellite radio tuner.

7. Check control signal (CONT) between audio unit

and satellite radio tuner.

8. Check communication signal [REQ (CHG-AUDIO),

Tx and Rx] between satellite radio tuner and CD
auto changer.

9. If the results from the above checkup show no mal-

function, replace audio unit, satellite radio tuner, or
CD auto changer, and then start self-diagnosis.

10.If self-diagnosis results still show any malfunction,

replace one of the two units that is not replaced yet.

11.If self-diagnosis results still show any malfunction,

replace the other unit.

FRONT SEAT DISPLAY
[ABNORMAL CONNECTION]

Display power supply and ground circuit
malfunction is detected

1. Check display power supply and ground circuit.

2. If the results from the above checkup show no mal-

function, replace display.

VOICE UNIT
[ABNORMAL CONNECTION]

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Voice activated control module power
supply and ground circuit malfunction is
detected

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Malfunction is detected on communica-
tion signal between AV and NAVI control
unit and voice activated control module

1. Check voice activated control module power supply

and ground circuit.

2. Check communication circuit between AV and NAVI

control unit and voice activated control module.

3. If the results from the above checkup show no mal-

function, replace either AV and NAVI control unit or
voice activated control module, and then start self-
diagnosis.

4. If self-diagnosis results still show any malfunction,

replace the other unit.

Error item

Possible cause

Action to take

NAVIGATION SYSTEM

AV-119

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AV

SIGNAL MONITOR

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When “SIGNAL MONITOR” is selected, “ALL SIGNALS” and
“SELECTION FROM MENU” are displayed.

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For each signal, a comparison of actual operating status and the
status recognized by the system can be checked.

Display Condition

SKIB0653E

Diagnosis item

Display

Condition

Remarks

VHCL SPD SIG

ON

When vehicle speed is more than 0 km/h (0 MPH)

Changes in indication may be delayed.
This is normal.

OFF

When vehicle speed is 0 km/h (0 MPH)

—

Ignition switch in ACC position

MTR ILL DIM

ON

Lighting switch is ON, and then optical sensor is
not illuminated

—

OFF

Lighting switch OFF

Lighting switch is ON, and then optical sensor is
illuminated

IGN SW

ON

Ignition switch ON

—

OFF

Ignition switch ACC position

AV-120

NAVIGATION SYSTEM

RGB Image Is Not Displayed (Rear View Image Is Displayed)

NKS001J6

Symptom: RGB image such as a map screen is not displayed. (No warning message though rear view image
is displayed.)

1.

CHECK HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect AV and NAVI control unit and display connectors.

3.

Check continuity between AV and NAVI control unit harness
connector (A) B30 terminal 12 and display harness connector
(B) M82 terminal 8.

4.

Check continuity between AV and NAVI control unit harness
connector (A) B30 terminal 12 and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair harness or connector.

2.

CHECK RGB AREA (YS) SIGNAL

1.

Turn ignition switch OFF.

2.

Connect AV and NAVI control unit and display connectors.

3.

Check voltage waveform between AV and NAVI control unit har-
ness connector B30 terminal 12 and ground with CONSULT-ll or
oscilloscope.

OK or NG

OK

>> Replace display.

NG

>> Replace AV and NAVI control unit.

12 – 8

: Continuity should exist.

12 – Ground

: Continuity should not exist.

SKIB7650E

12 – Ground:

When displaying rear view image

When displaying RGB image

SKIB7651E

SKIB3599E

SKIB3600E