Infiniti F50. Manual - part 200

POWER DOOR LOCK SYSTEM

BL-47

C

D

E

F

G

H

J

K

L

M

A

B

BL

2. 

CHECK DOOR KEY CYLINDER SWITCH

Check continuity between door key cylinder switch connector terminal.

OK or NG

OK

>> Check the following.

●

Harness between front key cylinder switch and driver
door control unit

●

Harness between front key cylinder switch and ground

NG

>> Replace front door key cylinder switch.

Check Key Switch

EIS003OE

1. 

CHECK KEY SWITCH 

 With CONSULT-II

Check key switch “IGN KEY SW” in “DATA MONITOR” mode with CONSULT-II.

 Without CONSULT-II

Check voltage between BCM connector M4 terminal 69 (PU/W) and ground.

OK or NG

OK

>> Key switch is OK.

NG

>> GO TO 2.

Terminals

Condition

Continuity

1 – 2 

Key is turned to UNLOCK

Yes

Key is turned to LOCK or neutral.

No

2 – 3

Key is turned to LOCK.

Yes

Key is turned to UNLOCK or neutral.

No

PIIA3148E

Key is inserted in ignition 
key cylinder

: IGN KEY SW  ON

Key is removed from ignition 
key cylinder

: IGN KEY SW  OFF

PIIA4243E

Connector

Terminal

(Wire color)

Condition

Voltage (V)

(Approx.)

( + )

( – )

M4

69 (PU/W)

Ground

Key is inserted

Battery voltage

Key is removed

0

PIIA2820E

BL-48

POWER DOOR LOCK SYSTEM

2. 

CHECK KEY SWITCH CIRCUIT

1.

Disconnect key switch connector.

2.

Check continuity between BCM connector M4 terminal 69 (PU/W) and key switch connector M64 terminal
4 (PU/W).

3.

Check continuity between BCM connector M4 terminal 69 (PU/
W) and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness.

3. 

CHECK KEY SWITCH

Check continuity key switch terminal.

OK or NG

OK

>> Check the following.

●

10A fuse [No. 8, located in fuse block (J/B) No. 1]

●

Harness for open or short between key switch and
fuse

NG

>> Replace key switch.

Check Front Door Switch

EIS00413

1. 

CHECK FRONT DOOR SWITCH INPUT SIGNAL

 With CONSULT-II

Check front door switch (“DOOR SW-DR” and “DOOR SW-AS”) in “DATA MONITOR” mode with CONSULT-II.

Without CONSULT-II

Check front door switch in “SWITCH MONITOR” mode.Refer to 

BL-41, "SWITCH MONITOR"

 .

OK or NG

OK

>> Front door switch is OK.

NG

>> GO TO 2

69 (PU/W) – 4 (PU/W)

: Continuity should exist.

69 (PU/W) – Ground

: Continuity should not exist.

PIIA2821E

Terminal

Condition of key switch

Continuity

3 – 4

Key is inserted in ignition key cylinder.

Yes

Key is removed from ignition key cylinder.

No

PIIA3044E

Monitor item

Condition

DOOR SW-DR

OPEN

: ON

CLOSE

: OFF

DOOR SW-AS

OPEN

: ON

CLOSE

: OFF

PIIA2464E

POWER DOOR LOCK SYSTEM

BL-49

C

D

E

F

G

H

J

K

L

M

A

B

BL

2. 

CHECK FRONT DOOR SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect front door switch connector and BCM connector.

3.

Check continuity between front door switch connector B20 (driver side), B220 (passenger side) terminal 1
(W/R, W/G) and BCM connector M4 (passenger), B4 (driver) terminal 37 (W/G), 142 (W/R).

4.

Check continuity between front door switch connector B20
(driver side), B220 (passenger side) terminal 1(W/R, W/G) and
ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness.

3. 

CHECK FRONT DOOR SWITCH

Check continuity between front door switch connector B20 (driver
side), B220 (passenger side) terminal 1 and ground part of door
switch.

OK or NG

OK

>> Check door switch case ground.

NG

>> Replace malfunction front door switch.

Driver side door switch

1 (W/R) – 142 (W/G)

: Continuity should exist.

Passenger side door switch

1 (W/G) – 37 (W/G)

: Continuity should exist.

Each door switch

1 (W/R, W/G) – Ground

: Continuity should not exist.

PIIA3118E

Terminal

Front door switch

Continuity

1

Ground part of 

door switch

Pushed

NO

Released

YES

PIIA3351E

BL-50

POWER DOOR LOCK SYSTEM

Check Door Unlock Sensor

EIS00415

1. 

CHECK DOOR UNLOCK SENSOR INPUT SIGNAL

 With CONSULT-II

Check door unlock sensor “LOCK SIG” in “DATA MONITOR” mode with CONSULT-II.

 Without CONSULT-II

Check door lock knob operation in Switch monitor mode.
Refer to Remote keyless entry system 

BL-41, "SWITCH MONITOR"

.

OK or NG

OK

>> Door unlock sensor is OK.

NG

>> GO TO 2.

2. 

CHECK DOOR UNLOCK SENSOR INPUT SIGNAL

1.

Turn ignition switch “OFF”.

2.

Disconnect door lock actuator connector.

3.

Check voltage between each door control unit and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Replace malfunctioning door control unit.

When door is locked

: LOCK SIG  LOCK

When door is unlocked

: LOCK SIG UNLK

PIIA2803E

 Door control unit connector

Terminal (Wire color)

Voltage (V)

Front door

 Driver side: D8

6 (G/Y) 

−

 ground

Approx. 5

Passenger side: D38

13 (G/Y) 

−

 ground

Rear door

LH: D58

RH: D78

PIIA4466E