Infiniti M45 (Y34). Manual — part 190

NAVIGATION SYSTEM

AV-93

C

D

E

F

G

H

I

J

L

M

A

B

AV

A/C is Inoperrative (The Display for A/C is Not Shown)

AKS003XW

1.

HARNESS CHECK

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp. connector and AV and NAVI control unit connector.

3.

Check continuity between A/C auto amp. and AV and NAVI control unit.

4.

Check continuity between AV and NAVI control unit and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair harness.

2.

A/C-AV, AC-CLK COMMUNICATION SIGNAL CHECK

1.

Connect A/C auto amp. connector.

2.

Turn ignition switch ON.

3.

Check voltage between AV and NAVI control unit harness con-
nector B29 terminal 37 (L/W), 39 (L/R) and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Replace A/C auto amp.

3.

A/C-AV, AC-CLK COMMUNICATION SIGNAL CHECK

1.

Connect AV and NAVI control unit connector.

2.

Turn ignition switch ON.

3.

Check the signal between AV and NAVI control unit harness
connector B29 terminal 37 (L/W), 39 (L/R) and ground with
CONSULT-ll or oscilloscope.

OK or NG

OK

>> Replace A/C auto amp.

NG

>> Replace AV and NAVI control unit.

Terminals

Continuity

AV and NAVI control unit (+)

A/C auto amp. (–)

Connector

Terminal

(Wire color)

Connector

Terminal

(Wire color)

B29

37 (L/W)

M119

9 (L/W)

YES

39 (L/R)

20 (L/R)

Terminals

Continuity

AV and NAVI control unit (+)

(–)

Connector

Terminal (Wire color)

B29

37 (L/W)

Ground

NO

39 (L/R)

SKIA3527E

37 (L/W), 39 (L/R) - Ground

: Approx. 5V

SKIA3528E

37(L/W), 39(L/R) - Ground

: Refer to

AV-64, "Terminals

and Reference Value for AV
and NAVI Control Unit"

.

SKIA3529E

AV-94

NAVIGATION SYSTEM

A/C is Inoperrative (The Display for A/C is Shown)

AKS003XX

1.

HARNESS CHECK

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp. connector and AV and NAVI control unit connector.

3.

Check continuity between A/C auto amp. and AV and NAVI control unit.

4.

Check continuity between AV and NAVI control unit and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair harness.

2.

AV-A/C, AC-CLK COMMUNICATION SIGNAL CHECK

1.

Connect A/C auto amp. connector.

2.

Turn ignition switch ON.

3.

Check voltage between AV and NAVI control unit harness con-
nector B29 terminal 38 (L) and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Replace A/C auto amp.

3.

AV-A/C, AC-CLK COMMUNICATION SIGNAL CHECK

1.

Connect AV and NAVI control unit connector.

2.

Turn ignition switch ON.

3.

Check the signal between AV and NAVI control unit harness
connector B29 terminal 38 (L) and ground with CONSULT-ll or
oscilloscope.

OK or NG

OK

>> Replace A/C auto amp.

NG

>> Replace AV and NAVI control unit.

Terminals

Continuity

AV and NAVI control unit (+)

A/C auto amp. (–)

Connector

Terminal

(Wire color)

Connector

Terminal

(Wire color)

B29

38 (L)

M119

10 (L)

YES

Terminals

Continuity

AV and NAVI control unit (+)

(–)

Connector

Terminal (Wire color)

B29

38 (L)

Ground

NO

SKIA9212E

38 (L) - Ground

: Approx. 5V

SKIA3531E

38 (L) - Ground

: Refer to

AV-64, "Terminals

and Reference Value for AV
and NAVI Control Unit"

.

SKIA9214E

NAVIGATION SYSTEM

AV-95

C

D

E

F

G

H

I

J

L

M

A

B

AV

No Fuel Information is Displayed/No Warning Message is Displayed

AKS003XY

1.

HARNESS CHECK

1.

Turn ignition switch OFF.

2.

Disconnect connectors of combination meter, BCM, and AV and NAVI control unit.

3.

Check continuity between AV and NAVI control unit and combination meter.

4.

Check continuity between AV and NAVI control unit and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair harness.

2.

COMMUNICATION SIGNAL (AV-ME) CHECK

1.

Connect connectors of combination meter, BCM, and AV and NAVI control unit.

2.

Turn ignition switch ON.

3.

Check the signal between AV and NAVI control unit harness
connector B29 terminal 33 (LG) and ground with CONSULT-ll or
oscilloscope.

OK or NG

OK

>> GO TO 3.

NG

>> Replace AV and NAVI control unit.

3.

COMMUNICATION SIGNAL (ME-AV) CHECK

1.

Turn ignition switch to ON and display “VEHICLE ELECTRONIC SYSTEMS” screen.

2.

Check the signal between AV and NAVI control unit harness
connector B29 terminal 32 (PU) and ground with CONSULT-ll or
oscilloscope.

OK or NG

OK

>> Replace AV and NAVI control unit.

NG

>> Replace combination meter.

Terminals

Continuity

AV and NAVI control unit (+)

combination meter (–)

Connector

Terminal

(Wire color)

Connector

Terminal

(Wire color)

B29

33 (LG)

M42

56 (LG)

YES

B29

32 (PU)

M42

57 (PU)

YES

Terminals

Continuity

AV and NAVI control unit (+)

(–)

Connector

Terminal (Wire color)

B29

33 (LG)

Ground

NO

32 (PU)

SKIA4205E

33 (LG) - Ground

: Refer to

AV-64, "Terminals

and Reference Value for AV
and NAVI Control Unit"

.

SKIA3534E

32(PU) - Ground

: Refer to

AV-64, "Terminals

and Reference Value for AV
and NAVI Control Unit"

.

SKIA3535E

AV-96

NAVIGATION SYSTEM

Vehicle Condition Setting is Not Possible

AKS003XZ

1.

HARNESS CHECK

1.

Turn ignition switch OFF.

2.

Disconnect connectors of combination meter, BCM, and AV and NAVI control unit.

3.

Check continuity AV and NAVI control unit and BCM.

4.

Check continuity between AV and NAVI control unit and ground.

OK or NG

OK

>> GO TO 2.

NG

>>

●

Check harness between AV and NAVI control unit and BCM for open or short circuit.

●

Check connector housings for disconnected or loose terminals.

2.

COMMUNICATION SIGNAL (AV-ME) CHECK

1.

Connect connectors of combination meter, BCM, and AV and NAVI control unit.

2.

Turn ignition switch ON.

3.

Check the signal between AV and NAVI control unit harness
connector B29 terminal 33 (LG) and ground with CONSULT-ll or
oscilloscope.

OK or NG

OK

>> GO TO 3.

NG

>> Replace AV and NAVI control unit.

3.

COMMUNICATION SIGNAL (ME-AV) CHECK

1.

Turn ignition switch to ON and display “VEHICLE ELECTRONIC SYSTEMS” screen.

2.

Check the signal between AV and NAVI control unit harness
connector B29 terminal 32 (PU) and ground with CONSULT-ll or
oscilloscope.

OK or NG

OK

>> Replace AV and NAVI control unit.

NG

>> Replace BCM.

Terminals

Continuity

AV and NAVI control unit (+)

BCM (–)

Connector

Terminal

(Wire color)

Connector

Terminal

(Wire color)

B29

33 (LG)

M4

31 (LG)

YES

32 (PU)

30 (PU)

Terminals

Continuity

AV and NAVI control unit (+)

(–)

Connector

Terminal (Wire color)

B29

33 (LG)

Ground

NO

32 (PU)

SKIA3536E

33 (LG) - Ground

: Refer to

AV-64, "Terminals

and Reference Value for AV
and NAVI Control Unit"

.

SKIA3534E

32 (PU) - Ground

: Refer to

AV-64, "Terminals

and Reference Value for AV
and NAVI Control Unit"

.

SKIA3535E