Nissan Murano Z50 (2006 year). Manual - part 37

BACK DOOR LOCK ASSEMBLY

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BACK DOOR LOCK ASSEMBLY

PFP:90504

Removal and Installation of Back Door Lock 

NIS0018T

REMOVAL

1.

Remove back door finisher. Refer to 

EI-39, "Removal and Installation"

  .

2.

Disconnect back door lock assembly connector.

3.

Remove the mounting bolts.

4.

Remove the mounting bolts, remove back door lock assembly.

INSTALLATION

Install in the reverse order of removal.

CAUTION:

●

After installing, check operation.

●

After installing, perform fitting adjustment. Refer to 

BL-182, "Fitting Adjustment"

  .

INSPECTION

1.

Check back door lock for the following items.

●

Malfunction noise or back door closing and opening effort

●

Component wear or damage 

2.

Apply body grease to the rotating part of the back door lock.

PIIB4833E

BL-188

BACK DOOR LOCK ASSEMBLY

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2006 Murano

Removal and Installation of Back Door Opener Switch

NIS0018U

REMOVAL

1.

Remove back door finisher. Refer to 

EI-39, "Removal and Installation"

  .

2.

Remove license plate lamp assembly. Refer to

LT-180, "LICENSE PLATE LAMP"

3.

Disconnect back door opener switch harness connector.

4.

Remove back door opener switch by pushing pawls with screwdriver.

INSTALLATION

Install in the reverse order of removal.

CAUTION:

●

After installing, check operation.

PIIB4831E

BACK DOOR OPENER

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BACK DOOR OPENER

PFP:90550

Component Parts and Harness Connector Location

NIS0018V

System Description / Without Intelligent Key

NIS0018W

Power is supplied at all times

●

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

●

to BCM terminal 55,

PIIB7800E

BL-190

BACK DOOR OPENER

Revision: 2006 August

2006 Murano

●

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

●

to BCM terminal 42

●

through 10A fuse [No.35, located in the fuse block (J/B)]

●

to back door opener relay terminal 3.

Ground is supplied

●

to BCM terminal 52

●

through body grounds M14 and M78.

When back door opener switch is ON (pushed) with passenger side door unlocked
Ground is supplied

●

to BCM terminal 30

●

through front door lock assembly (passenger side) terminals 1and 6

●

through back door opener switch terminals 1and 2 

●

through body grounds B7 and B20.

Power is supplied

●

through BCM terminal 68

●

to back door opener relay terminal 1

Ground is supplied

●

to back door opener relay terminal 2

●

through body grounds B7 and B20.

When back door opener relay is turned ON,
And power is supplied

●

to back door opener relay terminal 5

●

through back door lock assembly (back door opener actuator) terminals 1 and 2

●

through body grounds B7 and B20.

Then back door lock assembly opens back door.

System Description / With Intelligent Key

NIS0018X

Power is supplied at all times

●

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

●

to BCM terminal 55,

●

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

●

to BCM terminal 42

●

through 10A fuse [No.35, located in the fuse block (J/B)]

●

to back door opener relay terminal 3.

●

through 10A fuse [No.22, located in the fuse block (J/B)]

●

to Intelligent Key unit terminal 11.

Ground is supplied

●

to BCM terminal 52

●

through body grounds M14 and M78.

●

to Intelligent Key unit terminal 12

●

through body grounds M14 and M78.

When back door opener switch is ON (pushed) with passenger side door unlocked
Ground is supplied

●

to Intelligent Key unit terminal 24

●

through back door opener switch terminals 1and 2 

●

through body grounds B7 and B20.

Ground is supplied

●

to back door opener relay terminal 2

●

through Intelligent Key unit terminal 23.

When back door opener relay is turned ON,

BACK DOOR OPENER

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And power is supplied

●

to back door opener relay terminal 5

●

through back door lock assembly (back door opener actuator) terminals 1 and 2

●

through body grounds B7 and B20.

Then back door lock assembly (back door opener actuator) opens back door.

INTELLIGENT KEY OPERATION

Refer to 

BL-92, "System Description"

BL-192

BACK DOOR OPENER

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Schematic / With Intelligent Key

NIS0018Y

TIWB0292E

BACK DOOR OPENER

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Wiring Diagram —B/DOOR— / With Intelligent Key

NIS0018Z

TIWB0162E

BL-194

BACK DOOR OPENER

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TIWB0783E

BACK DOOR OPENER

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TIWB0784E

BL-196

BACK DOOR OPENER

Revision: 2006 August

2006 Murano

Wiring Diagram —B/DOOR— / Without Intelligent Key

NIS00190

TIWB0785E

BACK DOOR OPENER

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TIWB0786E

BL-198

BACK DOOR OPENER

Revision: 2006 August

2006 Murano

Terminals and Reference Value for BCM

NIS00191

*

1

  : With Intelligent Key

*

2

  : Without Intelligent Key

Terminals and Reference Value for INTELLIGENT KEY UNIT

NIS00192

TERMI-

NAL

WIRE 

COLOR

ITEM

Signal 

input/output

CONDITION

VOLTAGE (V)

(Approx.)

30

G

Back door opener 
switch

Input

Back door 
opener switch

: ON

 0

: OFF

5

39*

1

L

CAN-H

Input/output

—

—

40*

1

Y

CAN-L

Input/output

—

—

42

GR

Power source (Fuse)

Input

—

Battery voltage

44*

1

G/W

Driver door lock actua-
tor and fuel lid opener 
actuator (Unlock)

Output

Door lock and unlock switch

(Free 

→

 Unlock)

0 

→

 Battery voltage 

→

 0

50*

1

V

All door lock actuators 
(lock)

Output

Door lock and unlock switch

(Free 

→

 Lock)

0 

→

 Battery voltage 

→

 0

51*

1

G/Y

Passenger and rear 
doors lock actuator 
(unlock)

Output

Door lock and unlock switch

(Free 

→

 Unlock)

0 

→

 Battery voltage 

→

 0

52

B

Ground

—

—

0

55

W/B

Power source (Fusible 
link)

Input

—

Battery voltage

68*

2

G/L

Back door opener out-
put signal

Output

Back door opener switch is ON

0 

→

 Battery voltage 

→

 0

Ter-

minal 

No.

Wire 

color

Item

Signal 

input/out-

put

Condition

Voltage (V)

(Approx.)

Ignition knob 

position

Operation or conditions

2

L

CAN-H

Input/out-

put

—

—

—

3

Y

CAN-L

Input/out-

put

—

—

—

11

G/Y

Power source (Fuse)

Input

—

—

Battery voltage

12

B

Ground

—

—

—

0

23

G/L

Back door opener relay 
output

Input

—

Press back door opener switch.

0

Other than above.

Battery voltage

24

G/O

Back door opener switch

Input

—

Press back door opener switch

0

Other than above.

Battery voltage

29

G/W

Back door request 
switch

Input

—

Back door request switch opera-
tion: Press (ON)

0

Other than the above (OFF)

5

BACK DOOR OPENER

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Trouble Diagnosis

NIS00193

BACK DOOR DOSE NOT OPEN WITH BACK DOOR OPENER SWITCH / WITHOUT INTELLI-
GENT KEY SYSTEM

1. 

CHECK PASSENGER SIDE DOOR CONDITION

Check passenger side door condition.

Is the passenger side door unlock?

Yes

>> GO TO 2.

No

>> Unlock does the passenger side door.

2. 

CHECK BACK DOOR OPEN INPUT SIGNAL

Check voltage between BCM connector and ground.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 7.

3. 

CHECK BACK DOOR OPEN OUTPUT SIGNAL

Check voltage between BCM connector and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Replace BCM.

4. 

CHECK BACK DOOR OPENER RELAY CIRCUIT 

1.

Turn ignition switch OFF.

2.

Disconnect BCM and back door opener relay connector.

3.

Check continuity between BCM connector M36 terminal 68 and
back door opener relay connector B36 terminal 1.

4.

Check continuity between BCM connector M36 terminal 68 and
ground.

OK or NG

OK

>> GO TO 5.

NG

>> Repair harness or connector.

Connector

Terminal

(Wire color)

Condition

Voltage [V]

(Approx.)

(+)

(–)

M34

30 (G)

Ground

Back door 
opener switch

: ON

0

: OFF

5

PIIB7857E

Connec-

tor

Terminal

(Wire color)

Condition

Voltage [V]

(Approx.)

(+)

(–)

M36

68 (G/L)

Ground

Back door 
opener switch

: ON

Battery voltage

:OFF

0

PIIA9335E

68 (G/L) - 1 (G/L) 

: Continuity should exist.

68 (G/L) - Ground

: Continuity should not exist.

PIIB4868E

BL-200

BACK DOOR OPENER

Revision: 2006 August

2006 Murano

5. 

CHECK BACK DOOR OPENER RELAY

Check continuity between back door opener relay terminal 3 and 5.

OK or NG

OK

>> GO TO 6.

NG

>> Replace back door opener relay.

6. 

CHECK BACK DOOR OPENER RELAY GROUND CIRCUIT

Check continuity between back door opener relay connector E36 ter-
minals 2 and ground.

OK or NG

OK

>> GO TO 12.

NG

>> Repair or replace harness.

7. 

CHECK FRONT DOOR LOCK ASSEMBLY (PASSENGER SIDE) CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM and front door lock assembly (passenger side) connector.

3.

Check continuity between BCM connector M34 terminal 30 and
front door lock assembly (passenger side) connector D37 termi-
nals 1.

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace harness.

Terminals

Condition

Continuity

3

5

12V direct current sup-

ply between 1 and 2

Yes

Other than above

No

PIIA2636E

2 (B) - Ground 

: Continuity should exist.

PIIB4869E

30 (G) - 1 (G) 

: Continuity should exist.

PIIB7784E

BACK DOOR OPENER

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8. 

CHECK FRONT DOOR LOCK ASSEMBLY (PASSENGER SIDE)

Check continuity between front door lock assembly (passenger side) terminal 1 and 6.

OK or NG

OK

>> GO TO 9.

NG

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

9. 

CHECK BACK DOOR OPENER SWITCH CIRCUIT

1.

Disconnect back door opener switch connector.

2.

Check continuity between front door lock assembly (passenger
side) connector D38 terminal 6 and back door opener switch
connector D110 terminal 1.

OK or NG

OK

>> GO TO 10.

NG

>> Repair harness or connector.

10. 

CHECK BACK DOOR OPENER SWITCH

Check continuity between back door opener switch terminal 1 and 2.

OK or NG

OK

>> GO TO 11.

NG

>> Replace back door opener switch.

11. 

CHECK BACK DOOR OPENER SWITCH GROUND CIRCUIT

Check continuity between back door opener switch connector D110
terminals 2 and ground.

OK or NG

OK

>> Check the condition of harness and connector.

NG

>> Repair or replace harness.

Terminals

Condition

Continuity

1

6

Passenger side 

door lock

: Lock

Yes

: Unlock

No

PIIB7785E

6 (G/W) - 1 (G/O)

: Continuity should exist.

PIIB7786E

Terminals

Condition

Continuity

1

2

Back door opener 

switch

: ON

Yes

: OFF

No

PIIB4873E

2 (B) - Ground 

: Continuity should exist.

PIIB4874E

BL-202

BACK DOOR OPENER

Revision: 2006 August

2006 Murano

12. 

CHECK FUSE

Check 10A fuse [No.35 located in the fuse block (J/B)]

NOTE:
Refer to 

BL-189, "Component Parts and Harness Connector Location"

 .

OK or NG

OK

>> GO TO 13.

NG

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

13. 

CHECK BACK DOOR OPENER RELAY POWER SUPPLY

1.

Remove back door opener relay.

2.

Check voltage between back door opener relay connector B36
terminal 3 and ground.

OK or NG

OK

>> GO TO 14.

NG

>> Repair or replace back door opener relay power supply

circuit.

14. 

CHECK BACK DOOR OPENER ACTUATOR CIRCUIT 

1.

Disconnect back door lock assembly connector.

2.

Check continuity between back door relay connector B36 termi-
nal 5 and back door lock assembly connector D111 terminal 1.

3.

Check continuity between back door relay connector B36 termi-
nal 5 and ground.

OK or NG

OK

>> GO TO 15.

NG

>> Repair or replace harness.

15. 

CHECK BACK DOOR OPENER ACTUATOR GROUND CIRCUIT

Check continuity between back door lock assembly connector D111
terminals 2 and ground.

OK or NG

OK

>> GO TO 16.

NG

>> Repair or replace harness.

3 (GR) - Ground

: Battery voltage

PIIB4875E

5 (G/R) - 1 (G/R) 

: Continuity should exist.

5 (G/R) - Ground

: Continuity should not exist.

PIIB4876E

2 (B) - Ground 

: Continuity should exist.

PIIB4877E