Nissan Murano Z50 (2006 year). Manual - part 34

INTELLIGENT KEY SYSTEM

BL-139

C

D

E

F

G

H

J

K

L

M

A

B

BL

Revision: 2006 August

2006 Murano

4. 

CHECK KEY SWITCH CIRCUIT

1.

Disconnect Intelligent Key unit connector.

2.

Check continuity between Intelligent Key unit harness connector M99 terminal 7 and key switch and igni-
tion knob switch harness connector M118 terminal 4.

3.

Check continuity between Intelligent Key unit harness connector
M99 terminal 7 and ground.

OK or NG

OK

>> Check the condition of harness and harness connector.

NG

>> Repair or replace harness between Intelligent Key unit

and key switch and ignition knob switch.

Check Key Switch (BCM Input)

NIS0017U

1. 

CHECK KEY SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect key switch and ignition knob switch connector.

3.

Check voltage between key switch and ignition knob switch con-
nector M118 terminal 3 and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Check harness between key switch and ignition knob

switch and fuse.

2. 

CHECK KEY SWITCH

Check continuity between key switch and ignition knob switch har-
ness connector M118 terminals 3 and 4.

OK or NG

OK

>> GO TO 3.

NG

>> Replace key cylinder assembly (built-in key switch).

7 (B/R) - 4 (B/R)

: Continuity should exist.

7 (B/R) - Ground

: Continuity should not exist.

PIIB4255E

3 (G/Y) – Ground

: Battery voltage.

PIIB4254E

Connector

Terminal

Condition

Continuity

M118

3

4

Insert mechanical key 
into ignition switch.

Yes

Remove mechanical key 
from ignition switch.

No

PIIA6140E

BL-140

INTELLIGENT KEY SYSTEM

Revision: 2006 August

2006 Murano

3. 

CHECK KEY SWITCH SIGNAL CIRCUIT

1.

Disconnect BCM connector.

2.

Check continuity between BCM harness connector M34 terminal
37 and key switch and ignition knob switch harness connector
M118 terminal 4.

3.

Check continuity between BCM harness connector M34 terminal
37 and ground.

OK or NG

OK

>> Key switch (BCM input) circuit is OK.

NG

>> Repair or replace harness between key switch and ignition knob switch and BCM.

Check Ignition Knob Switch

NIS0017V

1. 

CHECK IGNITION KNOB SWITCH

 With CONSULT-II

Display “PUSH SW” on DATA MONITOR screen, and check if ON/
OFF display is linked to ignition switch operation.

 Without CONSULT-II

1.

Turn ignition switch OFF.

2.

Disconnect Intelligent Key unit connector.

3.

Check voltage between Intelligent Key unit harness connector
M99 terminal 27 and ground.

OK or NG

OK

>> Ignition knob switch is OK.

NG

>> GO TO 2.

37 (B/R) – 4 (B/R)

: Continuity should exist.

37 (B/R) – Ground

: Continuity should not exist.

PIIB4256E

Monitor item

Condition

PUSH SW

Ignition switch is pushed: ON

Ignition switch is withdrawn: OFF

PIIB1360E

Con-

nector

Terminal (Wire color)

Condition

Voltage (V)

(Approx.)

(+)

(–)

M99

27 (G/O)

Ground

Ignition switch is 
pushed

Battery voltage

Ignition switch is 
withdrawn

0

PIIB1364E

INTELLIGENT KEY SYSTEM

BL-141

C

D

E

F

G

H

J

K

L

M

A

B

BL

Revision: 2006 August

2006 Murano

2. 

CHECK IGNITION KNOB SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect key switch and ignition knob switch connector.

3.

Check voltage between key switch and ignition knob switch harness connector M118 terminal 1 and
ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace key switch and ignition knob switch

power supply circuit.

3. 

CHECK IGNITION KNOB SWITCH OPERATION

Check continuity between ignition knob switch harness connector M118 terminal 1 and 2.

OK or NG

OK

>> GO TO 4.

NG

>> Replace key switch and ignition knob switch.

4. 

CHECK IGNITION KNOB SWITCH CIRCUIT

1.

Check continuity between Intelligent Key unit harness connector M99 terminal 27 and key switch and igni-
tion knob switch harness connector M118 terminal 2.

2.

Check continuity between Intelligent Key unit harness connector
M99 terminal 27 and ground.

OK or NG

OK

>> Check the condition of harness and harness connector.

NG

>> Repair or replace harness between Intelligent Key unit

and key switch and ignition knob switch.

1 (G/Y) - Ground

: Battery voltage

PIIB4257E

Connector

Terminal

Condition

Continuity

M118

1

2

Ignition switch is pushed

Yes

Ignition switch is with-
drawn.

No

PIIA9929E

27 (G/O) - 2 (G/O)

: Continuity should exist.

27 (G/O) - Ground

: Continuity should not exist.

PIIB4258E

BL-142

INTELLIGENT KEY SYSTEM

Revision: 2006 August

2006 Murano

Check Door Switch

NIS0017W

CHECK DOOR SWITCH (EXCEPT BACK DOOR SWITCH)

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

1.

Turn ignition switch OFF.

2.

Check voltage between BCM harness connector and ground.

OK or NG

OK

>> Door switch circuit is OK.

NG

>> GO TO 2.

Monitor item

Condition

DOOR SW-DR

CLOSE 

→

 OPEN: OFF 

→

 ON

DOOR SW-AS

DOOR SW-RL

DOOR SW-RR

Item

Con-

nector

Terminals

(Wire color)

Door

condition

Voltage (V)

(Approx.)

(+)

(-) 

Driver side

M36

62 (SB)

Ground

CLOSE

↓

OPEN

Battery voltage

↓

0

Rear LH 

63

(R/W)

Passenger side

M34

12 (R/G)

Rear RH

13 (R/W)

PIIA6469E

PIIA7003E

INTELLIGENT KEY SYSTEM

BL-143

C

D

E

F

G

H

J

K

L

M

A

B

BL

Revision: 2006 August

2006 Murano

2. 

CHECK DOOR SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect door lock assembly connector.

3.

Check continuity between door switch terminals 4 and 5.

OK or NG

OK

>> GO TO 3.

NG

>> Replace malfunction door lock assembly.

3. 

CHECK DOOR SWITCH CIRCUIT 

1.

Disconnect BCM connector.

2.

Check continuity between door switch harness connector D10, D38, D56, D76 terminals 4 and BCM har-
ness connector M34, M36 terminals 12, 13, 62, 63.

3.

Check continuity between door switch harness connector D10,
D38, D56, D76 terminal 4 and ground.

OK or NG

OK

>> Check door switch case ground condition.

NG

>> Repair or replace harness.

Terminal

Door condition

Continuity

4

5

Close

No

Open

Yes

PIIB4605E

Driver door 

4 (SB) –62 (SB)

: Continuity should exist.

Passenger door

4 (R/G) – 12 (R/G)

: Continuity should exist.

Rear door LH

4 (V) – 63 (V)

: Continuity should exist.

Rear door RH

4 (R/W) – 13 (R/W)

: Continuity should exist.

4 (SB, R/G, V or R/W) – 
Ground

: Continuity should not 
exist.

PIIB4606E

BL-144

INTELLIGENT KEY SYSTEM

Revision: 2006 August

2006 Murano

CHECK BACK DOOR SWITCH

1. 

CHECK BACK DOOR SWITCH INPUT SIGNAL

 With CONSULT-II

Check door switches (“DOOR BK SW”) in “DATA MONITOR” mode
with CONSULT-II.

Without CONSULT-II

Check voltage between BCM connector and ground.

OK or NG

OK

>> Door switch circuit is OK.

NG

>> GO TO 2.

2. 

CHECK HARNESS CONTINUITY

1.

Turn ignition switch OFF.

2.

Disconnect BCM and back door lock assembly connector.

3.

Check continuity between BCM connector M36 terminal 58 and
back door lock assembly connector D111 terminal 3.

4.

Check continuity between BCM connector M36 terminal 58 and
ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness.

Monitor item

Condition

DOOR BK SW

Close 

→

 Open: CLOSE 

→

 OPEN

PIIB4684E

Connec-

tor

Terminal

(Wire color)

Back door condition

Voltage (V)

(Approx.)

(+)

(-) 

M36

58 (V/W)

Ground

Close

↓

Open

Battery voltage

↓

0

PIIA6473E

58 (V/W) – 3 (V/W)

: Continuity should exist.

58 (V/W) – Ground

: Continuity should not exist.

PIIB4607E

INTELLIGENT KEY SYSTEM

BL-145

C

D

E

F

G

H

J

K

L

M

A

B

BL

Revision: 2006 August

2006 Murano

3. 

CHECK GROUND CIRCUIT

Check continuity between back door closure motor connector D111
terminal 4 and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness.

4. 

CHECK BACK DOOR SWITCH

Check continuity between back door lock assembly terminals 3 and
4.

OK or NG

OK

>> GO TO 5.

NG

>> Replace back door lock assembly.

5. 

CHECK BCM OUTPUT SIGNAL

1.

Connect BCM connector.

2.

Check voltage between BCM connector M36 terminal 58 and ground.

OK or NG

OK

>> Check condition of harness and connector.

NG

>> Replace BCM.

Check Door Request Switch

NIS0017X

1. 

CHECK DOOR REQUEST SWITCH

 With CONSULT-II

Display “DR REQ SW” (driver door), “AS REQ SW” (passenger
door) and “BD/TR REQ SW” (back door) on DATA MONITOR
screen, and check if ON-OFF display is linked to door request switch
operation.

OK or NG

OK

>> Door request switch is OK.

NG

>> GO TO 2.

4 (B) – Ground

: Continuity should exist.

PIIB4608E

Terminals

Back door condition

Continuity

3

4

Open

Yes

Close

No

PIIB4609E

58 (V/W) – Ground

: Battery voltage

PIIA6229E

Press door request switch.

: ON

Release door request switch.

: OFF

PIIB1361E

BL-146

INTELLIGENT KEY SYSTEM

Revision: 2006 August

2006 Murano

2. 

CHECK DOOR REQUEST SWITCH SIGNAL

1.

Turn ignition knob LOCK position.

2.

Disconnect door request switch connector.

3.

Check voltage between door request switch connector D12 (driver door), D39 (passenger door), D108
(back door) terminal 1 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 5.

3. 

CHECK DOOR REQUEST SWITCH OPERATION

Check continuity between door request switch terminals 1 and 2.

OK or NG

OK

>> GO TO 4.

NG

>> Replace door request switch.

4. 

CHECK DOOR REQUEST SWITCH GROUND CIRCUIT

Check continuity between door request switch connector D12 (driver side), D39 (passenger side), D108 (back
door) terminal 2 (B) and ground.

OK or NG

OK

>> Check harness connection.

NG

>> Repair or replace door request switch ground circuit.

Driver

1 (BW) - Ground

: Approx. 5V

Passenger

1 (P/L) - Ground

: Approx. 5V

Back door

1 (G/R) - Ground

: Approx. 5V

PIIA6744E

Terminal

Condition

Continuity

1

2

Press door request switch

Yes

Other than above

No

PIIA9930E

2 (B) - Ground

: Continuity should exist.

PIIA6746E

INTELLIGENT KEY SYSTEM

BL-147

C

D

E

F

G

H

J

K

L

M

A

B

BL

Revision: 2006 August

2006 Murano

5. 

CHECK DOOR REQUEST SWITCH CIRCUIT

1.

Disconnect Intelligent Key unit connector.

2.

Check continuity between Intelligent Key unit connector M99 terminals 5 (driver door), 25 (passenger
door), and 29 (back door) and door request switch connector D12 (driver door), D39 (passenger door),
D108 (back door) terminal 1.

3.

Check continuity between door request switch connector D12
(driver door), D42 (passenger door), D113 (back door) terminal
1 and ground.

OK or NG

OK

>> Replace Intelligent Key unit.

NG

>> Repair or replace harness between Intelligent Key unit and door request switch.

Check Unlock Sensor

NIS0017Y

1. 

CHECK UNLOCK SENSOR POWER SUPPLY

Check voltage between Intelligent Key unit connector and ground.

OK or NG

OK

>> Unlock sensor is OK.

NG

>> GO TO 2.

2. 

CHECK UNLOCK SENSOR CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect Intelligent Key unit and front door lock assembly
(driver side) connector.

3.

Check continuity between Intelligent Key unit harness connector
M99 terminal 28 and front door lock assembly (driver side) har-
ness connector D10 terminal 1.

4.

Check continuity between Intelligent Key unit harness connector
M99 terminal 28 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness between Intelligent Key unit and front door lock assembly (driver side).

Driver

5 (B/W) - 1 (B/W)

: Continuity should exist.

Passenger

25 (P/L) - 1 (P/L)

: Continuity should exist.

Back door

29 (G/W) - 1 (G/R)

: Continuity should exist.

1 - Ground

: Continuity should not exist.

PIIA6747E

Con-

nector

Terminals (Wire color)

Condition

Voltage (V)

(Approx.)

(+)

(-)

M99

28 (SB)

Ground

Driver side door lock is 
locked

5

Driver side door lock is 
unlocked

0

PIIA6802E

28 (SB) – 1 (G/Y)

: Continuity should exist.

28 (SB) – Ground

: Continuity should not exist.

PIIB4610E

BL-148

INTELLIGENT KEY SYSTEM

Revision: 2006 August

2006 Murano

3. 

CHECK UNLOCK SENSOR GROUND CIRCUIT

Check continuity between front door lock assembly (driver side) harness connector D10 terminal 5 and
ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness.

4. 

CHECK INTELLIGENT KEY UNIT OUTPUT SIGNAL

1.

Connect Intelligent Key unit harness connector.

2.

Check voltage between Intelligent Key unit harness connector M99 terminal 28 and ground.

OK or NG

OK

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

NG

>> Replace Intelligent Key unit.

Check Intelligent Key Warning Buzzer (Inside)

NIS0017Z

1. 

CHECK INTELLIGENT KEY WARNING BUZZER (INSIDE) POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect Intelligent Key warning buzzer (inside) connector.

3.

Check voltage between Intelligent Key warning buzzer (inside) harness connector M100 terminal 1 and
ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace Intelligent Key warning buzzer (inside)

power supply circuit.

5 (B) – Ground

: Continuity should exist.

PIIA6804E

28 (SB) – Ground

: Approx. 5V

PIIA6802E

1 (Y/R) - Ground

: Battery voltage

PIIB4611E

INTELLIGENT KEY SYSTEM

BL-149

C

D

E

F

G

H

J

K

L

M

A

B

BL

Revision: 2006 August

2006 Murano

2. 

CHECK INTELLIGENT KEY WARNING BUZZER (INSIDE) CIRCUIT

1.

Disconnect Intelligent Key unit connector.

2.

Check continuity between Intelligent Key unit harness connector
M99 terminal 30 and Intelligent Key warning buzzer (inside) har-
ness connector M100 terminal 3.

3.

Check continuity between Intelligent Key unit harness connector
M99 terminal 30 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness between Intelligent Key warn-

ing buzzer (inside) and Intelligent Key unit.

3. 

CHECK INTELLIGENT KEY WARNING BUZZER (INSIDE) OPERATION

Connect battery power supply to Intelligent Key warning buzzer (inside) harness connector M100 terminals 1
and 3, and check the operation.

OK or NG

OK

>> Intelligent Key warning buzzer (inside) is OK.

NG

>> Replace Intelligent Key warning buzzer (inside).

Check Intelligent Key Warning Buzzer (ENGINE ROOM)

NIS00180

1. 

CHECK INTELLIGENT KEY WARNING BUZZER (ENGINE ROOM) POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect Intelligent Key warning buzzer (engine room) connector.

3.

Check voltage between Intelligent Key warning buzzer (engine room) harness connector E45 terminal 1
and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace Intelligent Key warning buzzer (engine

room) power supply circuit.

30 (LG/B) - 3 (LG/B)

: Continuity should exist.

30 (LG/B) - Ground

: Continuity should not exist.

PIIB4612E

1 (BAT+) - 3 (BAT-)

: the buzzer sounds

PIIB4613E

1 (Y/R) - Ground

: Battery voltage

PIIB4275E

BL-150

INTELLIGENT KEY SYSTEM

Revision: 2006 August

2006 Murano

2. 

CHECK INTELLIGENT KEY WARNING BUZZER (ENGINE ROOM) CIRCUIT

1.

Disconnect Intelligent Key unit connector.

2.

Check continuity between Intelligent Key unit harness connector
M99 terminal 4 and Intelligent Key warning buzzer (engine
room) harness connector E45 terminal 3.

3.

Check continuity between Intelligent Key warning buzzer
(engine room) harness connector E45 terminal 3 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness between Intelligent Key warn-

ing buzzer (engine room) and Intelligent Key unit.

3. 

CHECK INTELLIGENT KEY WARNING BUZZER (ENGINE ROOM) OPERATION

Connect battery power supply to Intelligent Key warning buzzer (engine room) harness connector E45 termi-
nals 1 and 3, and check the operation.

OK or NG

OK

>> Intelligent Key warning buzzer (engine room) is OK.

NG

>> Replace Intelligent Key warning buzzer (engine room).

4 (GR) - 3 (GR)

: Continuity should exist.

3 (GR) - Ground

: Continuity should not exist.

PIIB4276E

1 (BAT+) - 3 (BAT-)

: the buzzer sounds

PIIB4277E

INTELLIGENT KEY SYSTEM

BL-151

C

D

E

F

G

H

J

K

L

M

A

B

BL

Revision: 2006 August

2006 Murano

Check Outside Key Antenna

NIS00181

CHECK OUTSIDE KEY ANTENNA (DRIVER SIDE)

1. 

CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect outside key antenna (door mirror) connector.

3.

Check signal between Intelligent Key unit connector and ground
with oscilloscope.

4.

Disconnect outside key antenna (rear door LH) connector.

5.

Connect outside key antenna (door mirror) connector.

6.

Check signal between Intelligent Key unit connector and ground with oscilloscope.

OK or NG

OK

>> Check condition of harness and connector.

NG

>> GO TO 2.

Con-

nec-

tor

Item

Terminal

(wire color)

Condi-

tion

Signal

(Reference value)

(+)

(-)

M99

Driver side

19

 (P)

Ground

Request 
switch is 
pushed

Con-

nec-

tor

Item

Terminal

(wire color)

Condi-

tion

Signal

(Reference value)

(+)

(-)

M99

Driver side

19

 (P)

Ground

Request 
switch is 
pushed

PIIB4615E

SIIA1910J

SIIA1910J

BL-152

INTELLIGENT KEY SYSTEM

Revision: 2006 August

2006 Murano

2. 

CHECK OUTSIDE KEY ANTENNA CIRCUIT

1.

Disconnect Intelligent Key unit connector and outside key antenna (door mirror) connector.

2.

Check continuity between each outside key antenna harness connector and Intelligent Key unit connec-
tor.

3.

Check continuity between each outside key antenna connector
and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Replace harness between outside key antenna and

Intelligent Key unit.

Item

Con-

nector

Terminal

(Wire color)

Con-

nector

Terminal

(Wire color)

Continuity

Door mirror 
(driver side)

D2

1 (P)

M99

19 (P)

Yes

12 (V)

20 (V)

Rear door LH

D57

1 (P)

19 (P)

2 (V)

20 (V)

Item

Connector

Terminal

Continuity

Door mirror
(driver side)

D2

1 (P) 

Ground

No

12 (V)

Rear door LH

D57

1 (P) 

2 (V) 

PIIB4616E

INTELLIGENT KEY SYSTEM

BL-153

C

D

E

F

G

H

J

K

L

M

A

B

BL

Revision: 2006 August

2006 Murano

3. 

CHECK OUTSIDE KEY ANTENNA POWER SUPPLY

1.

Replace outside key antenna (door mirror). (New antenna or other antenna)

2.

Connect Intelligent Key unit connector and outside key antenna (door mirror) connector.

3.

Check signal between Intelligent Key unit connector and ground
with oscilloscope.

4.

Disconnect outside key antenna (door mirror) connector.

5.

Replace outside key antenna (rear door LH). (New antenna or other antenna)

6.

Connect outside key antenna (rear door LH) connector.

7.

Check signal between Intelligent Key unit connector and ground with oscilloscope.

OK or NG

OK

>> Check condition of harness and connector.

NG

>> Replace malfunction outside key antenna.

Con-

nec-

tor

Item

Terminal

(wire color)

Condi-

tion

Signal

(Reference value)

(+)

(-)

M99

Driver side

19

 (P)

Ground

Request 
switch is 
pushed

Con-

nec-

tor

Item

Terminal

(wire color)

Condi-

tion

Signal

(Reference value)

(+)

(-)

M99

Driver side

19

 (P)

Ground

Request 
switch is 
pushed

PIIB4615E

SIIA1910J

SIIA1910J

BL-154

INTELLIGENT KEY SYSTEM

Revision: 2006 August

2006 Murano

CHECK OUTSIDE KEY ANTENNA (PASSENGER SIDE)

1. 

CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect outside key antenna (door mirror) connector.

3.

Check signal between Intelligent Key unit connector and ground
with oscilloscope.

4.

Disconnect outside key antenna (rear door RH) connector.

5.

Connect outside key antenna (door mirror) connector.

6.

Check signal between Intelligent Key unit connector and ground with oscilloscope.

OK or NG

OK

>> Check condition of harness and connector.

NG

>> GO TO 2.

Con-

nec-

tor

Item

Terminal

(wire color)

Condi-

tion

Signal

(Reference value)

(+)

(-)

M99

Passenger 
side

37

(LG)

Ground

Request 
switch is 
pushed

Con-

nec-

tor

Item

Terminal

(wire color)

Condi-

tion

Signal

(Reference value)

(+)

(-)

M99

Passenger 
side

37

(LG)

Ground

Request 
switch is 
pushed

PIIB4617E

SIIA1910J

SIIA1910J