Infiniti M35/M45 Y50. Manual - part 278

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION

BL-181

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D

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F

G

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K

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A

B

BL

Check Inside Key Antenna

NIS001Z5

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

BL-182

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION

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

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION

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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.

Check Remote Keyless Entry Receiver

NIS001Z6

1. 

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect remote keyless entry receiver connector.

3.

Check voltage between Intelligent Key unit connector and ground.

OK or NG

OK >> GO 

TO 

2.

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

Terminals

Condition

Voltage (V)

(Approx.)

(+)

(–)

Intelli-

gent Key 

unit con-

nector

Ter-

minal

M32

4

Ground

Carry the Intelli-

gent Key within 

the inside key 

antenna detec-

tion area, and 
then push the 

push-button 

ignition switch.

0

Other than the 
above.

PIIB6264E

PIIB5657J

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INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION

2. 

CHECK HARNESS CONITNUITY

1.

Disconnect Intelligent Key unit connector.

2.

Check continuity between Intelligent Key unit connector and remote keyless entry receiver connector.

3.

Check continuity between Intelligent Key unit connector and
ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness between Intelligent Key unit and remote keyless entry receiver.

3. 

CHECK REMOTE KEYLESS ENTRY RECEIVER

1.

Replace remote keyless entry receiver.

2.

Connect Intelligent Key unit and remote keyless entry receiver connector. Check function the Intelligent
Key is carried into the inside key antenna detection area and the ignition switch is turned to START.

OK or NG

OK

>> Remote keyless entry receiver is malfunction.

NG

>> Remote keyless entry receiver is OK. If its malfunction is the same malfunction that occurred

before performing the Remote Keyless Entry Receiver Circuit Inspection, it is not a malfunction in
the remote keyless entry receiver circuit.

Check Key Switch Built In Key Slot

NIS001Z7

1. 

CHECK FUNCTION

When the driver door is opened while inserting the Intelligent Key into the key slot, make sure that key
reminder warning functions properly.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 2.

A

B

Continuity 

Intelligent Key 
unit connector

Terminal

Remote keyless 

entry receiver 

connector

Terminal

M32

4

M89

3

Yes

A

Ground

Continuity 

Intelligent Key unit connector

Terminal

M32

4

No

PIIB6265E

Key inserted

: Sound

Key removed

: No sound