Infiniti G35 (V35). Manual - part 189

INTELLIGENT KEY SYSTEM

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2. 

CHECK INTELLIGENT KEY WARNING BUZZER (ENGINE ROOM) CIRCUIT

1.

Disconnect Intelligent Key unit connector.

2.

Check continuity between Intelligent Key unit harness connector
M75 terminal 4 and Intelligent Key warning buzzer (engine
room) harness connector E38 terminal 3.

3.

Check continuity between Intelligent Key warning buzzer
(engine room) harness connector E38 terminal 3 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness between Intelligent Key warn-

ing buzzer (engine room) and Intelligent Key unit.

3. 

CHECK INTELLIGENT KEY WARNING BUZZER (ENGINE ROOM) OPERATION

Connect battery power supply to Intelligent Key warning buzzer (engine room) harness connector E38 termi-
nals 1 and 3, and check the operation.

OK or NG

OK

>> Intelligent Key warning buzzer (engine room) is OK.

NG

>> Replace Intelligent Key warning buzzer (engine room).

Check Outside Key Antenna

NIS001K6

1. 

CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

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

OK or NG

OK

>> Outside key antenna is OK.

NG

>> GO TO 2.

4 (GY) - 3 (GY)

: Continuity should exist.

3 (GY) - Ground

: Continuity should not exist.

PIIB4276E

1 (BAT+) - 3 (BAT-)

: the buzzer sounds

PIIB4277E

Con-

nec-

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Item

Terminal

(wire color)

Condi-

tion

Signal

(Reference value)

(+)

(-)

M75

Rear 
bumper

17 
(W/L)

Ground

Request 
switch is 
pushed

Driver side

19
 (P)

Passenger 
side

37
(LG)

MIIB0375E

SIIA1910J

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INTELLIGENT KEY SYSTEM

2. 

CHECK OUTSIDE KEY ANTENNA CIRCUIT

1.

Disconnect Intelligent Key unit connector and outside key antenna connector.

2.

Check continuity between each outside key antenna harness connector D17 (driver side), D46 (passen-
ger side), B131 (rear bumper) terminals 1, 2 and Intelligent Key unit harness connector M75 terminals 17,
18, 19, 20, 37, and 38.

3.

Check continuity between each outside key antenna harness
connector terminals 1, 2 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Replace harness between outside key antenna and Intelligent Key unit.

3. 

CHECK OUTSIDE KEY ANTENNA POWER SUPPLY

1.

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

2.

Connect Intelligent Key unit connector and outside key antenna connector.

3.

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

OK or NG

OK

>> Replace outside key antenna.

NG

>> Replace Intelligent Key unit.

Item

Connector

Terminal

(Wire color)

Connector

Terminal

(Wire color)

Continuity

Rear 
bumper

B131

1 (W)

M75

17 (W/L)

Yes

2 (B)

18 (W/R)

Driver side

D17

1 (P)

19 (P)

2 (PU)

20 (PU)

Passenger 
side

D46

1 (LG)

37 (LG)

2 (Y)

38 (Y)

Item

Connector

Terminal

Continuity

Rear bumper

B131

1 (W) 

Ground

No

2 (B)

Driver side

D17

1 (P) 

2 (PU) 

Passenger side

D46

1 (LG) 

2 (Y) 

PIIB7436E

Con-

nec-

tor

Item

Terminal

(wire color)

Condi-

tion

Signal

(Reference value)

(+)

(-)

M75

Rear 
bumper

17 
(W/L)

Ground

Request 
switch is 
pushed

Driver side

19
 (P)

Passenger 
side

37
(LG)

MIIB0375E

SIIA1910J

INTELLIGENT KEY SYSTEM

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Check Inside Key Antenna

NIS001K7

1. 

CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL

1.

Turn ignition switch OFF.

2.

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

OK or NG

OK

>> Inside key antenna is OK.

NG

>> GO TO 2.

2. 

CHECK INSIDE KEY ANTENNA

1.

Disconnect Intelligent Key unit connector and inside key antenna connectors.

2.

Check continuity between inside key antenna harness connector M172 (center console), M69 (dash-
board), B424 (trunk room) terminals 1, 2 and Intelligent Key unit harness connector M75 terminals 13, 14,
15, 16, 35 and 36.

3.

Check continuity between inside key antenna harness connec-
tor M172 (center console), M69 (dashboard), B424 (trunk room) terminals 1, 2 and ground.

OK or NG

OK

>> GO TO 3.

NG

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

Con-

nec-

tor

Item

Terminal

(Wire color)

Condition

Signal (V)

(Reference value)

(+)

(–)

M75

Trunk 
room

13 

(B)

Ground

Any door 
is open 

→

 

All doors 
are closed

Center 
console

15 

(G)

Ground

Ignition 
switch is 
pushed.

Dash-
board

35 

(LG)

PIIA6753E

PIIB7441E

Item

Connec-

tor

Terminal

(Wire color)

Connec-

tor

Terminal

(Wire color)

Continuity

Trunk room

B424

1 (B)

M75

13 (B)

Yes

2 (W)

14 (W)

Center console

M172

1 (G)

15 (G)

2 (R)

16 (R)

Dashboard

M69

1 (LG)

35 (LG)

2 (PU)

36 (PU)

Item

Connector

Terminal

(Wire color)

Continuity

Trunk room

B424

1 (B)

Ground

No

2 (W)

Center console

M172

1 (G)

2 (R)

Dashboard

M69

1 (LG)

2 (PU)

PIIB4388E

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INTELLIGENT KEY SYSTEM

3. 

CHECK INSIDE KEY ANTENNA POWER SUPPLY SINGAL

1.

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

2.

Connect Intelligent Key unit connector.

3.

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

OK or NG

OK

>> Replace inside key antenna.

NG

>> Replace Intelligent key unit.

Check Steering Lock Unit

NIS001K8

1. 

CHECK STEERING LOCK UNIT POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect steering lock unit connector.

3.

Check voltage between steering lock unit harness connector M311 terminal 1 and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace steering lock unit power supply circuit.

2. 

CHECK STEERING LOCK UNIT GROUND CIRCUIT

Check continuity between steering lock unit harness connector M311 terminal 4 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 6.

Con-

nec-

tor

Item

Terminal

(Wire color)

Condition

Signal (V)

(Reference value)

(+)

(–)

M75

Trunk 
room

13 

(B)

Ground

Any door 
is open 

→

 

All doors 
are closed

Center 
console

15 

(G)

Ground

Ignition 
switch is 
pushed.

Dash-
board

35 

(LG)

PIIA6753E

PIIB7441E

1 (Y) - Ground

: Battery voltage

PIIA6797E

4 (G/R) - Ground

: Continuity should exist.

PIIA6798E