Infiniti FX35 / FX45. Manual - part 212

INTELLIGENT KEY SYSTEM

BL-115

< SERVICE INFORMATION >

C

D

E

F

G

H

J

K

L

M

A

B

BL

N

O

P

OK or NG

OK

>> GO TO 4.

NG

>> Replace key switch and ignition knob switch.

4.

CHECK IGNITION KNOB SWITCH CIRCUIT

1.

Disconnect Intelligent Key unit connector.

2.

Check continuity between Intelligent Key unit connector M34 terminal 27 (L/W) and key switch and igni-
tion knob switch connector M22 terminal 2 (L/W).

3.

Check continuity between key switch and ignition knob switch
connector terminal 2 (L/W) and ground.

OK or NG

OK

>> Replace Intelligent Key unit.

NG

>> Repair or replace harness between Intelligent Key unit

and key switch and ignition knob switch.

Check Door Switch

INFOID:0000000001327857

CHECK DOOR SWITCH (EXCEPT BACK DOOR SWITCH)

1.

CHECK DOOR SWITCH INPUT SIGNAL

1.

Turn ignition knob LOCK position.

2.

Check voltage between BCM connector and ground.

OK or NG

OK

>> Door switch circuit is OK.

NG

>> GO TO 2.

2.

CHECK DOOR SWITCH CIRCUIT

Connector

Terminal

Condition

Continuity

M22

1

2

Press ignition knob

Yes

Return ignition knob (Re-
lease hands from ignition 
knob)

No

PIIA9929E

27 (L/W) - 2 (L/W)

: Continuity should exist.

2 (L/W) - Ground

: Continuity should not exist.

PIIA6743E

Item

Connector

Terminals

(Wire color)

Door

condition

Voltage (V)

(Approx.)

(+)

(-) 

Driver side

B14

62 (W)

Ground

CLOSE

↓

OPEN

Battery voltage

↓

0

Rear LH 

63 (P)

Passenger side

M3

12 (P/B)

Rear RH

13 (P/L)

PIIA7003E

BL-116

< SERVICE INFORMATION >

INTELLIGENT KEY SYSTEM

1.

Disconnect door switch and BCM connector.

2.

Check continuity between door switch connector B26, B36, B46, B206 terminals 1 and BCM connector
M3, B14 terminals 62, 12, 63, 13.

3.

Check continuity between door switch connector B26, B36, B46,
B206 terminal 1 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness.

3.

CHECK DOOR SWITCH

Check continuity between door switch terminal 1 and ground part of door switch.

OK or NG

OK

>> Check door switch case ground condition.

NG

>> Replace door switch.

CHECK BACK DOOR SWITCH

1.

CHECK BACK DOOR SWITCH INPUT SIGNAL

Check voltage between BCM connector and ground.

OK or NG

OK

>> Back door switch circuit is OK.

NG

>> GO TO 2.

2.

CHECK HARNESS CONTINUITY

1.

Turn ignition switch OFF.

2.

Disconnect BCM and back door closure motor connector.

Driver side door 

1 (W) –62 (W)

: Continuity should exist.

Passenger side door

1 (SB) – 12 (P/B)

: Continuity should exist.

Rear door LH

1 (P) – 63 (P)

: Continuity should exist.

Rear door RH

1 (P) – 13 (P/L)

: Continuity should exist.

1 (W, SB, P) – Ground

: Continuity should not exist.

PIIA7004E

Terminal

Door switch condition

Continuity

1

Ground part of door switch

Pushed

No

Released

Yes

PIIA3351E

Connector

Terminals (Wire color)

Condition

Voltage (V)

(Approx.)

(+)

(–)

B14

58 (L)

Ground

OPEN

0

CLOSE

9

PIIA6229E

INTELLIGENT KEY SYSTEM

BL-117

< SERVICE INFORMATION >

C

D

E

F

G

H

J

K

L

M

A

B

BL

N

O

P

3.

Check continuity between BCM connector B14 terminal 58 and
back door closure motor connector D109 terminal 7.

4.

Check continuity between BCM connector B14 terminal 58 and
ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness.

3.

CHECK GROUND CIRCUIT

Check continuity between back door closure motor connector D109
terminal 8 and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness.

4.

CHECK BACK DOOR SWITCH

Check continuity between back door closure motor D109 terminals 7
and 8.

OK or NG

OK

>> GO TO 5.

NG

>> Replace back door closure motor.

5.

CHECK BCM OUTPUT SIGNAL

1.

Connect BCM connector.

2.

Check voltage between BCM connector and ground.

OK or NG

OK

>> Check condition of harness and connector.

NG

>> Replace BCM.

Check Unlock Sensor

INFOID:0000000001327858

1.

CHECK UNLOCK SENSOR POWER SUPPLY

Check voltage between Intelligent Key unit connector and ground.

58 (L) – 7 (L)

: Continuity should exist.

58 (L) – Ground

: Continuity should not exist.

PIIA6226E

8 (B) – Ground

: Continuity should exist.

PIIA6170E

Terminals

Back door condition

Continuity

7

8

Open

Yes

Close

No

PIIA9934E

58 (L) – Ground

: Approx. 9V

PIIA6229E

BL-118

< SERVICE INFORMATION >

INTELLIGENT KEY SYSTEM

OK or NG

OK

>> Unlock sensor is OK.

NG

>> GO TO 2.

2.

CHECK UNLOCK SENSOR CIRCUIT

1.

Turn ignition knob LOCK position.

2.

Disconnect Intelligent Key unit and front door lock assembly (driver side) connector.

3.

Check continuity between Intelligent Key unit connector M34 terminal 28 (W/B) and front door lock
assembly (driver side) connector D10 terminal 4 (W).

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness between Intelligent Key unit

and front door lock assembly (driver side).

3.

CHECK UNLOCK SENSOR GROUND CIRCUIT

Check continuity between front door lock assembly (driver side) connector D10 terminal 5 (B) and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness.

4.

CHECK INTELLIGENT KEY UNIT OUTPUT SIGNAL

1.

Connect Intelligent Key unit connector.

2.

Driver side door lock is locked.

3.

Check voltage between Intelligent Key unit connector M34 terminal 28 (W/B) and ground.

OK or NG

OK

>> Replace front door lock assembly (driver side).

NG

>> Replace Intelligent Key unit.

Connector

Terminals (Wire color)

Condition

Voltage (V)

(Approx.)

(+)

(-)

M34

28 (W/B)

Ground

Driver side door lock is 
locked

5

Driver side door lock is un-
locked

0

PIIA6802E

28 (W/B) – 4 (W)

: Continuity should exist.

PIIA6803E

5 (B) – Ground

: Continuity should exist.

PIIA6804E

28 (W/B) – Ground

: Approx. 5V

PIIA6802E