Infiniti M35/M45 Y50. Manual - part 260

INTELLIGENT KEY SYSTEM

BL-109

C

D

E

F

G

H

J

K

L

M

A

B

BL

3. 

CHECK OUTSIDE KEY ANTENNA CIRCUIT

1.

Disconnect Intelligent Key unit and outside key antenna (trunk room) connector.

2.

Check continuity between Intelligent Key unit connector and outside key antenna (trunk room) connector.

3.

Check continuity between Intelligent Key unit connector and
ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness between Intelligent Key unit and outside key antenna (trunk room).

4. 

CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 2

1.

Replace outside key antenna. (New antenna or other antenna)

2.

Connect Intelligent Key unit and outside key antenna (trunk room) connector.

3.

Check signal between Intelligent Key unit connector and ground with oscilloscope.

OK or NG

OK

>> Replace malfunction front outside handle.

NG

>> Replace Intelligent Key unit.

A

B

Continuity 

Intelligent Key 
unit connector

Terminal

Outside key 

antenna (trunk 

room) connector

Terminal

M32

17

B121

1

Yes

18

2

A

Ground

Continuity 

Intelligent Key unit

connector

Terminal

M32

17

No

18

PIIB8926E

Terminals

Condition

Signal

(Reference value.)

(+)

(–)

Intelligent 

Key unit 

connector

Terminal

M32

17

Ground

Trunk 
request 
switch is 
pushed

PIIB8925E

SIIA1910J

BL-110

INTELLIGENT KEY SYSTEM

Check Inside Key Antenna

NIS001XW

1. 

CHECK INSIDE KEY ANTENNA FUNCTION

 With CONSULT-II

1.

Check the operation with (“ANTENNA”) in the ACTIVE TEST.

2.

Touch “ROOM ANT1” “ROOM ANT2” “ROOM ANT3” “LUG ANT” on screen.

3.

Carry the Intelligent Key into the antenna detection area.

Do the hazard lamps flash?

Yes

>> Inside key antenna is OK.

No

>> GO TO 2.

2. 

CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1

1.

Turn ignition switch OFF.

2.

Check signal between Intelligent Key unit connector and ground with oscilloscope.

OK or NG

OK

>> Check the condition of harness and connector.

NG

>> GO TO 3.

Test item

Corresponding antenna

ROOM ANT1

Inside key antenna instrument center

ROOM ANT2

Inside key antenna console

ROOM ANT3

Inside key antenna rear seat

LUG ANT1

Inside key antenna trunk room

PIIB6345E

Terminals

Condition

Signal

(Reference value.)

(+)

(–)

Intelligent Key 
unit connector

Ter-

minal

M33

Instru-

ment 

center

47

Ground

Any door 

is open 

→

 

close

Console

49

Rear seat

51

Trunk 

room

53

PIIB6350E

SIIA1910J

INTELLIGENT KEY SYSTEM

BL-111

C

D

E

F

G

H

J

K

L

M

A

B

BL

3. 

CHECK INSIDE KEY ANTENNA CIRCUIT

1.

Disconnect Intelligent Key unit and inside key antenna connector.

2.

Check continuity between Intelligent Key unit connector and inside key antenna connector.

3.

Check continuity between Intelligent Key unit connector and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness between Intelligent Key unit and inside key antenna.

A

B

Continuity 

Intelligent Key 
unit connector

Terminal

Inside key antenna 

connector

Terminal

M33

47

M83

Instrument 

center

1

Yes

48

2

49

M142

Console

1

50

2

51

B45

Rear seat

1

52

2

53

B473

Trunk room

1

54

2

A

Ground

Continuity 

Intelligent Key unit

connector

Terminal

M33

Instrument center

47

No

48

Console

49

50

Rear seat

51

52

Trunk room

53

54

PIIB6351E

BL-112

INTELLIGENT KEY SYSTEM

4. 

CHECK INDE KEY ANTENNA INPUT SIGNAL 2

1.

Replace inside key antenna. (New antenna or other antenna)

2.

Connect Intelligent Key unit and inside key antenna connector.

3.

Check signal between Intelligent Key unit connector and ground with oscilloscope.

OK or NG

OK

>> Replace malfunction inside key antenna.

NG

>> Replace Intelligent Key unit.

Terminals

Condition

Signal

(Reference value.)

(+)

(–)

Intelligent Key 
unit connector

Ter-

minal

M33

Instru-

ment 

center

47

Ground

Any door 

is open 

→

 

close

Console

49

Rear seat

51

Trunk 

room

53

PIIB6350E

SIIA1910J