Nissan Murano Z50 (2004 year). Manual - part 27

POWER DOOR LOCK SYSTEM

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CAN Communication System Description

AIS003CL

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.

CAN Communication Unit

AIS003KH

Refer to 

LAN-8, "CAN COMMUNICATION"

 .

BL-26

POWER DOOR LOCK SYSTEM

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Schematic

AIS002EY

TIWA0486E

POWER DOOR LOCK SYSTEM

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Wiring Diagram -D/LOCK-

AIS002EZ

FIG. 1

TIWA0487E

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POWER DOOR LOCK SYSTEM

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FIG. 2

TIWA0488E

POWER DOOR LOCK SYSTEM

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FIG. 3

TIWA0489E

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POWER DOOR LOCK SYSTEM

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FIG. 4

TIWB0023E

POWER DOOR LOCK SYSTEM

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FIG. 5

TIWB0024E

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POWER DOOR LOCK SYSTEM

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Terminals and Reference Value for BCM

AIS002HG

Work Flow

AIS002F1

1.

Check the symptom and customer's requests.

2.

Understand the outline of system. Refer to 

BL-23, "System Description"

  .

3.

According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to 

BL-35,

"Trouble Diagnoses Chart by Symptom"

  .

4.

Does power door lock system operate normally?
YES: GO TO 5.
NO: GO TO 3.

5.

INSPECTION END.

TERMINAL 

WIRE 

COLOR

ITEM

CONDITION

VOLTAGE [V]

(Approx.)

12

R/G

Front door switch
(Passenger side)

ON (Door is opened) 

→

 OFF (Door is 

closed) 

0 

→

 Battery voltage

13

R/W

Rear door switch RH

ON (Door is opened) 

→

 OFF (Door is 

closed)

0 

→

 Battery voltage

22

BR/W

Power window serial link

Ignition switch (ON or power window 
timer operating)

37

B/R

Key switch 

Key switch ON (key is inserted in igni-
tion key cylinder)

Battery voltage 

Key switch OFF (key is removed from 
ignition key cylinder)

0

39

L

CAN-H

—

—

40

Y

CAN-L

—

—

42

GR

Power source
(Fuse)

—

Battery voltage

44

G/W

Driver door lock actuator 
(Unlock)

Door lock and unlock switch
(Free 

→

 Unlock)

0 

→

 Battery voltage 

→

 0

50

V

All door lock actuators (lock)

Door lock and unlock switch
(Free 

→

 Lock)

0 

→

 Battery voltage 

→

 0

51

G/Y

Passenger and rear doors 
lock actuator (unlock)

Door lock and unlock switch
(Free 

→

 Unlock)

0 

→

 Battery voltage 

→

 0

52

B

Ground

—

0

55

W/B

Power source
 (Fusible link)

—

Battery voltage

58

V/W

Back door switch

ON (Back door is opened) 

→

 

OFF (Back door is closed) 

0 

→

 Battery voltage

62

SB

Front door switch
(Driver side)

ON (Door is opened) 

→

 OFF (Door is 

closed) 

0 

→

 Battery voltage

63

R/W

Rear door switch LH

ON (Door is opened) 

→

 OFF (Door is 

closed)

0 

→

 Battery voltage

PIIA2344J

POWER DOOR LOCK SYSTEM

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CONSULT-II Function

AIS002F3

The following functions are executed by combining data received and command transmitted via the communi-
cation line from the BCM.

*: Refer to 

BCS-14, "CAN Communication Inspection Using CONSULT-II (Self-Diagnosis)"

 .

CONSULT-II BASIC OPERATION PROCEDURE

CAUTION:

If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.

1.

Turn ignition switch “OFF”.

2.

Connect “CONSULT-II” and “CONSULT-II CONVERTER” to
data link connector.

3.

Turn ignition switch “ON”.

4.

Touch “START (NISSAN BASED VHCL)”.

BCM diagnosis part

Inspection item, self-diagnosis 

mode

Content

BCM C/U*

SELF-DIAG RESULTS

Carries out the self-diagnosis.

DATA 
MONITOR

CAN DIAG SUPPORT 

MNTR

Displays CAN communication system diagnosis, disabled transmission 
status, and communication status of each unit communicated with 
BCM.

SELECTION FROM 

MENU

Displays the input data to BCM on real-time basis.

DOOR LOCK

WORK SUPPORT

Changes the setting for each function.

DATA MONITOR

Displays BCM input data on real-time basis.

ACTIVE TEST

Sends drive signals to door lock actuator to perform operation check.

PIIA1095E

MBIB0233E

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POWER DOOR LOCK SYSTEM

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5.

Touch “BCM” on “SELECT SYSTEM” screen.
If “BCM” is not indicated, go to 

GI-39, "CONSULT-II Data Link

Connector (DLC) Circuit"

  .

6.

Touch “DOOR LOCK”.

7.

Select diagnosis mode.
“WORK SUPPORT”, “DATA MONITOR” and  “ACTIVE TEST”
are available.

CONSULT-II APPLICATION ITEMS
Work Support

Data Monitor

LIIA0033E

PIIA9922E

PIIA9924E

Work item 

Description

DOOR LOCK-UNLOCK SET

Select unlock mode can be changed in this mode. Selects ON-OFF of select unlock mode.

ANTI-LOCK OUT SET

Key reminder door mode can be changed in this mode. Selects ON-OFF of key reminder door 
mode.

Monitor item

Content

IGN ON SW

Indicates [ON/OFF] condition of ignition switch in ON position. 

KEY ON SW

Indicates [ON/OFF] condition of key switch.

CDL LOCK SW

Indicates [ON/OFF] condition of lock signal from door lock and unlock switch.

CDL UNLOCK SW

Indicates [ON/OFF] condition of unlock signal from door lock and unlock switch.

DOOR SW-DR

Indicates [ON/OFF] condition of front door switch driver side.

DOOR SW-AS

Indicates [ON/OFF] condition of front door switch passenger side.

DOOR SW-RR

Indicates [ON/OFF] condition of rear door switch RH.

DOOR SW-RL

Indicates [ON/OFF] condition of rear door switch LH.

BACK DOOR SW

Indicates [ON/OFF] condition of back door switch.

POWER DOOR LOCK SYSTEM

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Active Test

Trouble Diagnoses Chart by Symptom

AIS002F4

NOTE:
Always check the “Work Flow” before troubleshooting. Refer to 

BL-32, "Work Flow"

  .

*

1

  : Driver side

*

2

  : Passenger side, rear LH, RH

*

3

  : Back door

KEY CYL LK-SW

Indicates [ON/OFF] condition of lock signal from key cylinder.

KEY CYL UN-SW

Indicates [ON/OFF] condition of unlock signal from key cylinder.

KEYLESS LOCK

Indicates [ON/OFF] condition of lock signal from key fob.

KEYLESS UNLOCK

Indicates [ON/OFF] condition of unlock signal from key fob.

Monitor item

Content

Test item in “DOOR LOCK”

Content

ALL LOCK

This test is able to check all door lock actuators lock operation.
These actuators lock when “ALL LOCK” on CONSULT-II screen is touched.

ALL UNLOCK

This test is able to check all door lock actuators unlock operation.
These actuators unlock when “ALL UNLOCK” on CONSULT-II screen is touched.

DR UNLOCK

This test is able to check door lock actuator (driver side) lock/unlock operation.
This actuator unlock when “DR UNLOCK” on CONSULT-II screen is touched.

OTHER UNLOCK

This test is able to check all door lock actuators (except driver side) unlock operation.
These actuators unlock when “OTHER UNLOCK” on CONSULT-II screen is touched.

Symptom

Diagnoses service procedure

Refer to page

Power door lock does not operate with door lock and 
unlock switch on power window main switch or front 
power window switch (passenger side).

1. Check power supply and ground circuit

BL-36

2. Check door lock and unlock switch.

BL-43

3. Replace BCM.

BCS-14

Specific door lock actuator does not operate.

1. Check door lock actuator.

BL-45

*

1

BL-46

*

2

BL-46

*

3

Power door lock does not operate with front door key cyl-
inder operation, but operates with door lock and unlock 
switch.

1. Check front door key cylinder switch.

BL-47
BL-48

2. Replace power window main switch.

–

Fuel lid lock actuator does not lock.
(All door lock actuators are activate properly.)

1. Check fuel lid lock actuator circuit. (Lock)

BL-49

Fuel lid lock actuator does not unlock.
(All door lock actuators are activate properly.)

1. Check fuel lid lock actuator circuit. (Unlock)

BL-50

Fuel lid opener actuator does not operate at all.
(All door lock actuators are activate properly.)

1. Check fuel lid lock actuator circuit. (Lock and 
Unlock)

BL-51

Key reminder door system does not operate properly.

1. Check power supply and ground circuit

BL-36

2. Check key switch.

BL-41

3. Check door switch. 

BL-37

4. Replace BCM.

BCS-14

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POWER DOOR LOCK SYSTEM

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Power Supply and Ground Circuit Check

AIS002F2

1. 

FUSE INSPECTION

Check the following.

●

50A fusible link (letter F , located in the fuse and fusible link box)

●

10A fuse [No.18 located in the fuse block (J/B)]

NOTE:
Refer to 

BL-22, "Component Parts and Harness Connector Location"

  .

OK or NG

OK

>> GO TO 2.

NG

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse, refer to 

PG-

3, "POWER SUPPLY ROUTING CIRCUIT"

  .

2. 

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check voltage between BCM connector M35 terminals 42, 55
and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace BCM power supply circuit.

3. 

CHECK GROUND CIRCUIT

Check continuity between BCM connector M35 terminal 52 (B) and
ground.

OK or NG

OK

>> BCM power supply and ground circuit is OK.

NG

>> Repair or replace BCM ground circuit.

42 (GR) – Ground

: Battery voltage.

55 (W/B) – Ground

: Battery voltage.

PIIA6374E

52 (B) – Ground

: Continuity should exist.

PIIA9326E

POWER DOOR LOCK SYSTEM

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Check Door Switch

AIS003C5

CHECK DOOR SWITCH (EXCEPT BACK DOOR SWITCH)

First perform the “SELF-DIAG RESULT” in “BCM” with CONSULT-II. When perform the each trouble diagno-
sis, refer to 

BCS-14, "CAN Communication Inspection Using CONSULT-II (Self-Diagnosis)"

  .

1. 

CHECK DOOR SWITCH INPUT SIGNAL

 With CONSULT-II

Check door switches (“DOOR SW-DR”, “DOOR SW-AS”, “DOOR SW-RL” and “DOOR SW-RR”) in “DATA
MONITOR” mode with CONSULT-II.

Without CONSULT-II

Check voltage between BCM and ground.

OK or NG

OK

>> Door switch circuit is OK.

NG

>> GO TO 2

Monitor item

Condition

DOOR SW-DR

Door is closed

↓

Door is opened

OFF

↓

ON

DOOR SW-AS

DOOR SW-RL

DOOR SW-RR

PIIA6469E

Door switch

Connector

Terminals

(wire color)

Condition

Voltage [V]

(Approx.)

(+)

(–)

Driver side

M36

62 (SB)

Ground

Door close

↓

Door open

Battery voltage

↓

0

Rear LH

63 (R/W)

Passenger side

M34

12 (R/G)

Rear RH

13 (R/W)

PIIA7003E

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POWER DOOR LOCK SYSTEM

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2. 

CHECK DOOR SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect door switch and unified BCM connectors.

3.

Check continuity between BCM and door switch.

4.

Check continuity between BCM and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness.

3. 

CHECK DOOR SWITCH

Check continuity between door switch terminals 4 and 5.

OK or NG

OK

>> GO TO 4.

NG

>> Replace door switch.

Door switch

Connec-

tor

Terminal

(wire color)

Connec-

tor

Terminal

(wire color)

Continuity

Driver side

M36

62 (SB)

D10

4 (SB)

Yes

Rear LH

63 (R/W)

D56

4 (V)

Passenger side

M34

12 (R/G)

D38

4 (R/G)

Rear RH

13 (R/W)

D76

4 (R/W)

Door switch

Connector

Terminal

(wire color)

Continuity

Driver side

M36

62 (SB)

Ground

No

Rear LH

63 (R/W)

Passenger side

M34

12 (R/G)

Rear RH

13 (R/W)

PIIB0888E

Terminal

Door switch condition

Continuity

4

5

Open position

Yes

Closed position

No

PIIA4314E

POWER DOOR LOCK SYSTEM

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4. 

CHECK DOOR SWITCH GROUND HARNESS

Check continuity between door switch connectors and ground.

OK or NG

OK

>> Replace BCM.

NG

>> Repair or replace harness.

CHECK BACK DOOR SWITCH

1. 

CHECK BACK DOOR SWITCH INPUT SIGNAL

 With CONSULT-II

Check back door switch (“BACK DOOR SW”) in “DATA MONITOR” mode with CONSULT-II.

●

When back door is open

●

When back door is closed

Without CONSULT-II

Check voltage between BCM connector and ground.

*. When interior lamp battery saver control is OFF: Approx. 5V.

OK or NG

OK

>> Back door switch circuit is OK.

NG

>> GO TO 2.

Door switch

Connector

Terminal

Continuity

Driver side

D10

5 (B)

Ground

Yes

Passenger side

D38

Rear RH

D76

Rear LH

D56

5 (G/Y)

PIIA4313E

BACK DOOR SW

: ON

BACK DOOR SW

: OFF

PIIA2488E

Item

Con-

nector

Terminals

(Wire color)

Condition

Voltage [V]

(Approx.)

(+)

(–)

Back door switch

M36

58 (V/W)

Ground

OPEN

0

CLOSE

Battery voltage*

PIIB0889E

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POWER DOOR LOCK SYSTEM

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2. 

CHECK BACK DOOR SWITCH HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect BCM and back door switch connectors.

3.

Check continuity between BCM connector M36 terminal 58 and
back door switch connector D100 terminal 1.

4.

Check continuity between BCM connector M36 terminal 58 and
ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness.

3. 

CHECK BACK DOOR SWITCH

Check continuity between back door switch terminals 1 and 3.

OK or NG

OK

>> GO TO 4.

NG

>> Replace back door switch.

4. 

CHECK BACK DOOR SWITCH GROUND HARNESS

Check continuity between back door switch connector D100 terminal 3 (B) and ground.

OK or NG

OK

>> Check harness connection.

NG

>> Repair or replace harness.

58 (V/W) – 1 (V/W)

: Continuity should exist.

58 (V/W) – Ground

: Continuity should not exist.

PIIB0890E

Terminal

Back door switch condition

Continuity

1

3

Open position

Yes

Closed position

No

PIIA4316E

3 (B) - Ground

: Continuity should exist.

PIIA2490E