Infiniti M45 (Y34). Manual - part 187

NAVIGATION SYSTEM

AV-81

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AV

DATA MONITOR (SIGNAL MONITOR)

●

Displays status of the vehicle signal input to the AV and NAVI
control unit. (Refer to 

AV-73, "Confirmation/Adjustment Mode"

for operation conditions for the connections to be indicated.)

●

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

SKIA3923E

DATA MONITOR item

Display

Condition

Remarks

VHCL SPD SIG

ON

Vehicle speed > 0 km/h  (0 MPH)

Changes in indication may be delayed by 
approx. 1.5 seconds. This is normal.

OFF

Vehicle speed = 0 km/h  (0 MPH)

-

Ignition switch in ACC position

FOOT BREAK

ON

-

This item cannot be monitored.
(No change of display)

PARKING BRAKE

ON

-

This item cannot be monitored.
(No change of display)

MTR ILL DIM

ON

Lighting switch ON

-

OFF

Lighting switch OFF

IGN SW

ON

Ignition switch ON

-

OFF

Ignition switch ACC or OFF

PNP SW

ON

-

This item cannot be monitored.
(No change of display)

AV-82

NAVIGATION SYSTEM

VERSION 

Displays version of each unit connected to the AV and NAVI control unit.

SKIA3575E

Version display

Remarks

“PANEL SW”

Multifunction switch

“MAP DISK”

Map disc

“HEAD UNIT”

AV and NAVI control unit

“REAR VIEW CAMERA”

-

“FRONT SEAT DISPLAY”

Display

“AUDIO HEAD UNIT”

-

“AIR COMP RECEIVER”

Low tire pressure warning control unit

“BOSE AMP”

-

“IVCS”

-

“VOICE UNIT”

Voice activated control module

NAVIGATION SYSTEM

AV-83

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AV

Power Supply and Ground Circuit Check

AKS003XN

1. 

CHECK FUSE

●

Make sure the following fuses of the AV and NAVI control unit are not blown.

OK or NG

OK

>> GO TO 2.

NG

>> If fuse is blown be sure to eliminate case of malfunction before installing new fuse. Refer to 

PG-2,

"POWER SUPPLY ROUTING"

 .

2. 

POWER SUPPLY CIRCUIT CHECK

1.

Disconnect the AV and NAVI control unit connector. 

2.

Check voltage between the following AV and NAVI control unit
harness connector terminals and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Check harness for open or short between AV and NAVI control unit and fuse.

3. 

GROUND CIRCUIT CHECK

Check continuity between the following AV and NAVI control unit and
ground.

OK or NG

OK

>> Inspection end.

NG

>> Repair or replace harness.

Terminals

Power source

Fuse No.

Connector

Terminal (Wire color)

B30

2 (SB), 3 (SB)

Battery power

52

B30

6 (L/B)

ACC power

21

Terminals

OFF

ACC

(+)

(–)

Connector

Terminal 

(Wire color)

B30

2 (SB), 3 (SB)

Ground

Battery voltage

Battery voltage

B30

6 (L/B)

Ground

0V

Battery voltage

SKIA3555E

Terminals

Ignition switch

Continuity

(+)

(–)

Connector

Terminal (Wire color)

B30

1 (B),4 (B)

Ground

OFF

Yes

SKIA3515E

AV-84

NAVIGATION SYSTEM

Vehicle Speed Signal Check

AKS003XO

1. 

HARNESS CHECK

1.

Turn ignition switch OFF.

2.

Disconnect AV and NAVI control unit connector and combination meter connector.

3.

Check continuity between AV and NAVI control unit harness
connector B29 terminal 28 (OR/L) and combination meter har-
ness connector M41 terminal 37 (OR/L).

4.

Check continuity between AV and NAVI control unit harness
connector B29 terminal 28 (OR/L) and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair harness.

2. 

VEHICLE SPEED SIGNAL CHECK 2

1.

Connect AV and NAVI control unit connector and combination meter connector. 

2.

Drive vehicle at a constant speed.

3.

Check the signal between AV and NAVI control unit harness
connector B29 terminal 28 (OR/L) and ground with CONSULT

−

ll

or oscilloscope.

OK or NG

OK

>> Replace AV and NAVI control unit.

NG

>> Check combination meter system, refer to 

DI-16, "Vehi-

cle Speed Signal Inspection"

 .

Illumination Control Signal Check

AKS003XP

1. 

ILLUMINATION CONTROL SIGNAL CHECK

1.

Turn ignition switch ON.

2.

Check voltage between AV and NAVI control unit and ground.

OK or NG

OK

>> Replace AV and NAVI control unit.

NG

>> Check harness for open or short between AV and NAVI

control unit and BCM.

28 (OR/L) - 37 (OR/L)

: Continuity should exist.

28 (OR/L) - Ground

: Continuity should not exist.

SKIA3925E

28 (OR/L) - Ground

: Refer to 

AV-64, "Terminals 

and Reference Value for AV 
and NAVI Control Unit"

 .

SKIA3517E

Terminals

Lighting switch position

(+)

(–)

Connector

Terminal (Wire 

color)

1st or 2nd 

position

OFF

B29

25 (R/L)

Ground

Approx. 12V 

Approx. 0V 

SKIA3557E