Infiniti G35 (V35). Manual - part 185

INTELLIGENT KEY SYSTEM

BL-127

C

D

E

F

G

H

J

K

L

M

A

B

BL

Check Key Switch (Intelligent Key Unit Input)

NIS001JW

1. 

CHECK KEY SWITCH

 With CONSULT-II

Check key switch (“KEY SW”) in “DATA MONITOR” mode with CON-
SULT-II.

 Without CONSULT-II

1.

Turn ignition switch OFF.

2.

Disconnect Intelligent Key unit harness connector.

3.

Check voltage between Intelligent Key unit harness connector
M75 terminal 7 and ground.

OK or NG

OK

>> Key switch is OK.

NG

>> GO TO 2.

2. 

CHECK KEY SWITCH POWER SUPPLY CIRCUIT

1.

Remove mechanical key from ignition switch.

2.

Disconnect key switch and ignition knob switch connector.

3.

Check voltage between key switch and ignition knob switch harness connector M310 terminal 3 and
ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace key switch and ignition knob switch

power supply circuit.

Monitor item

Condition

KEY SW

Insert mechanical key into ignition switch: ON

Remove mechanical key from ignition switch: OFF

PIIB1359E

Connec-

tor

Terminal (Wire color)

Condition

Voltage (V)

(Approx.)

(+)

(–)

M75

7 (B/P)

Ground

Insert mechanical key 
into ignition switch

Battery voltage

Remove mechanical 
key from ignition switch

0

PIIB4817E

3 (Y) - Ground

: Battery voltage

PIIB4254E

BL-128

INTELLIGENT KEY SYSTEM

3. 

CHECK KEY SWITCH OPERATION

Check continuity between key switch and ignition knob switch con-
nector M310 terminal 3 and 4.

OK or NG

OK

>> GO TO 4.

NG

>> Replace key cylinder assembly (built-in key switch).

4. 

CHECK KEY SWITCH CIRCUIT

1.

Check continuity between Intelligent Key unit harness connector M75 terminal 7 and key switch and igni-
tion knob switch harness connector M310 terminal 4.

2.

Check continuity between Intelligent Key unit harness connector
M75 terminal 7 and ground.

OK or NG

OK

>> Check the condition of harness and harness connector.

NG

>> Repair or replace harness between Intelligent Key unit

and key switch and ignition knob switch.

Connector

Terminal

Condition

Continuity

M310

3

4

Insert mechanical key 
into ignition switch.

Yes

Remove mechanical key 
from ignition switch.

No

PIIA6140E

7 (B/P) - 4 (B/P)

: Continuity should exist.

7 (B/P) - Ground

: Continuity should not exist.

PIIB4255E

INTELLIGENT KEY SYSTEM

BL-129

C

D

E

F

G

H

J

K

L

M

A

B

BL

Check Key Switch (BCM Input)

NIS001JX

1. 

CHECK KEY SWITCH POWER SUPPLY CIRCUIT

1.

Remove mechanical key from ignition switch.

2.

Disconnect key switch and ignition knob switch connector.

3.

Check voltage between key switch and ignition knob switch har-
ness connector M310 terminal 3 and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Check harness between key switch and ignition knob

switch and fuse.

2. 

CHECK KEY SWITCH

Check continuity between key switch and ignition knob switch con-
nector M310 terminals 3 and 4.

OK or NG

OK

>> GO TO 3.

NG

>> Replace key cylinder assembly (built-in key switch).

3. 

CHECK KEY SWITCH SIGNAL CIRCUIT

1.

Disconnect BCM connector.

2.

Check continuity between BCM harness connector M1 terminal
37 and key switch and ignition knob switch harness connector
M310 terminal 4.

3.

Check continuity between BCM harness connector M1 terminal
37 and ground.

OK or NG

OK

>> Key switch (BCM input) circuit is OK.

NG

>> Repair or replace harness between key switch and ignition knob switch and BCM.

3 (Y) – Ground

: Battery voltage.

PIIB4254E

Connector

Terminal

Condition

Continuity

M310

3

4

Insert mechanical key 
into ignition switch.

Yes

Remove mechanical key 
from ignition switch.

No

PIIA6140E

37 (B/P) – 4 (B/P)

: Continuity should exist.

37 (B/P) – Ground

: Continuity should not exist.

PIIB4256E

BL-130

INTELLIGENT KEY SYSTEM

Check Ignition Knob Switch

NIS001JY

1. 

CHECK IGNITION KNOB SWITCH

 With CONSULT-II

Display “PUSH SW” on DATA MONITOR screen, and check if ON/
OFF display is linked to ignition switch operation.

 Without CONSULT-II

1.

Turn ignition switch OFF.

2.

Disconnect Intelligent Key unit connector.

3.

Check voltage between Intelligent Key unit harness connector
M75 terminal 27 and ground.

OK or NG

OK

>> Ignition knob switch is OK.

NG

>> GO TO 2.

2. 

CHECK IGNITION KNOB SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect key switch and ignition knob switch connector.

3.

Check voltage between key switch and ignition knob switch harness connector M310 terminal 1 and
ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace key switch and ignition knob switch

power supply circuit.

Monitor item

Condition

PUSH SW

Ignition switch is pushed: ON

Ignition switch is withdrawn: OFF

PIIB1360E

Connec-

tor

Terminal (Wire color)

Condition

Voltage (V)

(Approx.)

(+)

(–)

M75

27 (OR)

Ground

Ignition switch is 
pushed

Battery voltage

Ignition switch is 
released

0

PIIB1364E

1 (Y) - Ground

: Battery voltage

PIIB4257E