Infiniti FX35 / FX45. Manual - part 194

POWER DOOR LOCK SYSTEM

BL-43

< SERVICE INFORMATION >

C

D

E

F

G

H

J

K

L

M

A

B

BL

N

O

P

1.

Disconnect key switch connector.

2.

Check continuity between key switch terminals 1 and 2.

OK or NG

OK

>>

Check the following.

• 15A fuse (No. 22, located in fuse and fusible link block)
• Harness for open or short between key switch and fuse
• Harness for open or short between BCM and key switch

NG

>> Replace key switch or key switch and ignition knob switch.

Check Door Lock and Unlock Switch

INFOID:0000000001327805

1.

CHECK DOOR LOCK AND UNLOCK SWITCH INPUT SIGNAL

 With CONSULT-III

Check door lock and unlock switch (“CDL LOCK SW” and “CDL UNLOCK SW”) in DATA MONITOR mode with
CONSULT-III.
• When door lock and unlock switch is turned to LOCK:

• When door lock and unlock switch is turned to UNLOCK:

 Without CONSULT-III

1.

Remove key from ignition key cylinder.

2.

Check the signal between BCM connector M3 terminal 22 and ground with oscilloscope when door lock
and unlock switch is turned “LOCK” or “UNLOCK”.

3.

Make sure signals which are shown in the figure below can be
detected during 10 second just after door lock and unlock switch
is turned “LOCK” or “UNLOCK”.

OK or NG

OK

>> Door lock and unlock switch circuit is OK.

NG

>> GO TO 2.

Terminal

Condition of key switch

Continuity

1

2

Key is inserted in IGN key cylinder.

Yes

Key is removed from IGN key cylinder.

No

PIIA2627E

CDL LOCK SW

: ON

CDL UNLOCK SW

: ON

Connector

Terminal

(Wire color)

Signal

(Reference value)

(+)

(–)

M3

22 (OR)

Ground

PIIA6379E

PIIA1297E

BL-44

< SERVICE INFORMATION >

POWER DOOR LOCK SYSTEM

2.

CHECK POWER WINDOW SERIAL LINK CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM, power window main switch and front power window switch connectors.

3.

Check continuity between BCM connector M3 terminal 22 and
power window main switch (door lock and unlock switch) con-
nector D6 terminal 14.

4.

Check continuity between power window main switch (door lock
and unlock switch) connector D6 terminal 14 and ground.

5.

Check continuity between BCM connector M3 terminal 22 and
front power window switch (door lock and unlock switch) con-
nector D36 terminal 16.

6.

Check continuity between front power window switch (door lock
and unlock switch) connector D36 terminal 16 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness.

3.

CHECK DOOR LOCK AND UNLOCK SWITCH GROUND HARNESS

• Check continuity between power window main switch (door lock

and unlock switch) connector D7 terminal 17 and ground.

• Check continuity between power window sub-switch (front passen-

ger side) (door lock and unlock switch) connector D36 terminal 11
and ground.

OK or NG

22 (OR) – 14 (Y)

: Continuity should exist.

14 (Y) – Ground

: Continuity should not exist.

PIIB0405E

22 (OR) – 16 (Y)

: Continuity should exist.

16 (Y) – Ground

: Continuity should not exist.

PIIB0406E

17 (B) – Ground

: Continuity should exist.

PIIA6201E

11 (B) – Ground

: Continuity should exist.

PIIA6202E

POWER DOOR LOCK SYSTEM

BL-45

< SERVICE INFORMATION >

C

D

E

F

G

H

J

K

L

M

A

B

BL

N

O

P

OK

>> Replace power window main switch or power window sub-switch.

NG

>> Repair or replace harness.

Check Door Lock Actuator (Driver Side)

INFOID:0000000001327806

1.

CHECK DOOR LOCK ACTUATOR CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM and front door lock actuator (driver side) connector.

3.

Check continuity between BCM connector M4 terminals 44, 50
and front door lock actuator (driver side) connector D10 termi-
nals 2, 3. 

4.

Check continuity between BCM connector M4 terminals 44, 50
and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace harness.

2.

CHECK OUTPUT SIGNAL

1.

Connect BCM and door lock actuator (driver side) connector.

2.

Check voltage between BCM connector M4 terminals 44, 50 and
ground.

OK or NG

OK

>> Check harness connection.

NG

>> Replace BCM.

Check Door Lock Actuator (Passenger Side and Rear LH/RH)

INFOID:0000000001327807

1.

CHECK DOOR LOCK ACTUATOR CIRCUIT

1.

Disconnect BCM and each door lock actuator connectors. 

44 (Y) – 2 (GY)

: Continuity should exist.

50 (PU) – 3 (PU)

: Continuity should exist.

44 (Y) – Ground

: Continuity should not exist.

50 (PU) – Ground

: Continuity should not exist.

PIIA6539E

Con-

nector

Terminal

(Wire color)

Condition

Voltage (V)

(Approx.)

(+)

(–)

M4

44

 (Y)

Ground

Driver door lock/unlock 
switch is turned to UN-
LOCK.

0 

→

 Battery voltage 

→

 0

50 

(PU)

Driver door lock/unlock 
switch is turned to 
LOCK.

0 

→

 Battery voltage 

→

 0

PIIA6383E

BL-46

< SERVICE INFORMATION >

POWER DOOR LOCK SYSTEM

2.

Check continuity between BCM connector M4 terminals 50, 51
and front door lock actuator passenger side, rear door lock actu-
ator LH/RH connectors D40, D52, D72 terminals 2, 3. 

3.

Check continuity between BCM connector M4 terminals 50, 51
and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace harness.

2.

CHECK DOOR LOCK ACTUATOR SIGNAL

Check voltage between BCM connector M4 terminals 50, 51 and
ground.

OK or NG

OK

>>  Replace front door lock assembly (passenger side) or rear door lock actuator LH/RH.

NG

>> Replace BCM.

Check Fuel Lid Lock Actuator

INFOID:0000000001327808

1.

CHECK FUEL LID LOCK ACTUATOR CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM and fuel lid lock actuator connector. 

3.

Check continuity between BCM connector M4 terminals 44, 50
and fuel lid lock actuator connector B70 terminals 1, 2. 

4.

Check continuity between BCM connector M4 terminals 44, 50
and ground.

OK or NG

50 (PU) – 3 (PU)

: Continuity should exist.

51 (W/B) – 2 (L or Y)

: Continuity should exist.

50 (PU) – Ground

: Continuity should not exist.

51 (W/B) – Ground

: Continuity should not exist.

PIIA6540E

Con-

nector

Terminal

(Wire color)

Condition

Voltage (V)

(Approx.)

(+)

(–)

M4

50

(PU)

Ground

Door lock/unlock switch 
is turned to LOCK.

0 

→

 Battery voltage 

→

 0

51

(W/B)

Door lock/unlock switch 
is turned to UNLOCK.

0 

→

 Battery voltage 

→

 0

PIIA6385E

44 (Y) – 2 (L)

: Continuity should exist.

50 (PU) – 1 (PU)

: Continuity should exist.

44 (Y) – Ground

: Continuity should not exist.

50 (PU) – Ground

: Continuity should not exist.

PIIA6386E