Infiniti Q45. Manual - part 195

POWER DOOR LOCK SYSTEM

BL-49

C

D

E

F

G

H

J

K

L

M

A

B

BL

2. 

CHECK KEY SWITCH CIRCUIT

1.

Disconnect key switch connector.

2.

Check continuity between BCM connector M4 terminal 69 and key switch connector M64 terminal 4.

3.

Check continuity between BCM connector M4 terminal 69 and
ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness.

3. 

CHECK KEY SWITCH

Check continuity between key switch terminals 3 and 4.

OK or NG

OK

>> Check the following.

●

10A fuse [No. 32, located in fuse block (J/B) No. 2]

●

Harness for open or short between key switch and
fuse

NG

>> Replace key switch.

Check Front Door Switch

NIS000UA

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-42, "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

Connector

Terminal

Condition of key switch

Continuity

M64

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

BL-50

POWER DOOR LOCK SYSTEM

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 (driverside), B220 (passenger side) terminal 1
and BCM connector M4 (passenger), B4 (driver) terminal 37, 142.

4.

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

OK or NG

OK

>> Check door switch case ground. If door switch case

ground is OK, replace BCM.

NG

>> Replace malfunction front door switch.

Driver side door switch

1 (W/R) – 142 (W/R)

: 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

POWER DOOR LOCK SYSTEM

BL-51

C

D

E

F

G

H

J

K

L

M

A

B

BL

Check Door Unlock Sensor

NIS000UB

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-42, "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 connector 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)

(Approx.)

(+)

(-)

Front door

 Driver side: D8

6 (G/Y)

Ground

5

Passenger side: D38

13 (G/Y)

Rear door

LH: D58

RH: D78

PIIB0179E

BL-52

POWER DOOR LOCK SYSTEM

3. 

CHECK DOOR UNLOCK SENSOR SIGNAL CIRCUIT

1.

Disconnect door control unit connector.

2.

Check continuity between door control unit connector and door lock actuator (door unlock sensor) con-
nector.

3.

Check continuity between door control unit connector and
ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness.

4. 

CHECK DOOR UNLOCK SENSOR GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect door lock actuator connector.

3.

Check continuity between each door control unit connector and ground.

OK or NG

OK

>> Replace door lock actuator (door unlock sensor).

NG

>> Repair or replace harness.

 Connector

Terminal 

(wire color)

Connector

Terminal 

(Wire color)

Continuity

Driver side: 
D8

 6 (G/Y)

D11

2 (G/Y)

Yes

Passenger 
side: D38

13 (G/Y)

D41

Rear LH: 
D58

D61

Rear RH: 
D78

D81

Connector

Terminal (Wire color)

Continuity

Driver side: D8

 6 (G/Y) 

Ground

No

Passenger side: D38

13 (G/Y) 

Rear LH: D58

Rear RH: D78

PIIA2857E

PIIB0180E

 Connector

Terminal (wire color)

Continuity

Driver side: D11

 4 (B) 

Ground

Yes

Passenger side: D41

Rear LH: D61

Rear RH: D81

PIIA2859E