Nissan Pathfinder (2011 year). Instruction - part 148

DLK-50

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

CENTER CONSOLE AREA ANTENNA

CENTER CONSOLE AREA ANTENNA

Description

INFOID:0000000006245441

Detects whether Intelligent Key is inside the vehicle.

Component Function Check

INFOID:0000000006245442

NOTE:

The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II

User Guide for additional information.

• Check Intelligent Key relative signal strength

• Confirm vehicle Intelligent Key antenna signal strength

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL

With CONSULT-III

1. Check “ANTENNA” in “Active Test” mode with CONSULT-III.

2. Touch “ROOM ANT2”.

3. When Intelligent Key is inside center console area antenna detection area, hazard lamps flash.

Is the inspection result normal?

YES

>> Center console area antenna is OK.

NO

>> Refer to 

DLK-50, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006245443

NOTE:

The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II

User Guide for additional information.

• Check Intelligent Key relative signal strength

• Confirm vehicle Intelligent Key antenna signal strength

Regarding Wiring Diagram information, refer to 

DLK-151, "Wiring Diagram"

.

1.

CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL

1. Turn ignition switch OFF.

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

Is the inspection result normal?

YES

>> Center console area antenna is OK.

NO

>> GO TO 2

2.

CHECK INSIDE KEY ANTENNA

Test Item

Condition

Possible cause

ROOM ANT2

An excessive high or low voltage from inside 

antenna is sent to the Intelligent Key unit

• Center console area antenna
• Between Intelligent Key unit and center console area an-

tenna

Connector

Item

Terminals

Condition

Signal (V)

(Reference value)

(+)

(–)

M164

Intelligent 

Key unit

13

Ground

Ignition 
switch is 
pushed.

ALKIA0583ZZ

PIIB7441E

2011 Pathfinder

CENTER CONSOLE AREA ANTENNA

DLK-51

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

1. Disconnect Intelligent Key unit connector and center console area antenna connectors.

2. Check continuity between Intelligent Key unit harness connector (A) M164 terminals 13, 14 and center

console area antenna harness connector (B) M212 terminals 1, 2.

3. Check continuity between Intelligent Key unit harness connector

(A) M164 terminals 13, 14 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness between Intelligent Key unit and center console area antenna.

3.

CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL

1. Replace center console area antenna (New antenna or other antenna).

2. Connect Intelligent Key unit connector.

3. Check signal between Intelligent Key unit connector and ground

with oscilloscope.

Is the inspection result normal?

YES

>> Replace center console area antenna.

NO

>> Replace Intelligent Key unit. Refer to 

SEC-113, "Removal and Installation"

.

Intelligent Key 
unit connector

Terminals

Center console area 

antenna connector

Terminals

Continuity

A: M164

13

B: M212

1

Yes

14

2

Item

Connector

Terminals

Continuity

Intelligent Key 

unit

A: M164

13

Ground

No

14

ALKIA0584ZZ

Connector

Item

Terminals

Condition

Signal (V)

(Reference value)

(+)

(–)

M164

Intelligent 

Key unit

13

Ground

Ignition 
switch is 
pushed.

ALKIA0583ZZ

PIIB7441E

2011 Pathfinder

DLK-52

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

LUGGAGE AREA ANTENNA

LUGGAGE AREA ANTENNA

Description

INFOID:0000000006245444

Detects whether Intelligent Key is inside the vehicle.

Component Function Check

INFOID:0000000006245445

NOTE:

The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II

User Guide for additional information.

• Check Intelligent Key relative signal strength

• Confirm vehicle Intelligent Key antenna signal strength

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL

With CONSULT-III

1. Check “ANTENNA” in “Active Test” mode with CONSULT-III.

2. Touch “ROOM ANT2”.

3. When Intelligent Key is inside luggage area antenna detection area, hazard lamps flash.

Is the inspection result normal?

YES

>> luggage area antenna is OK.

NO

>> Refer to 

DLK-52, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006245446

NOTE:

The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II

User Guide for additional information.

• Check Intelligent Key relative signal strength

• Confirm vehicle Intelligent Key antenna signal strength

Regarding Wiring Diagram information, refer to 

DLK-151, "Wiring Diagram"

.

1.

CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL

1. Turn ignition switch OFF.

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

Is the inspection result normal?

YES

>> Luggage area antenna is OK.

NO

>> GO TO 2

2.

CHECK INSIDE KEY ANTENNA

Test Item

Condition

Possible cause

ROOM ANT2

An excessive high or low voltage from inside 

antenna is sent to the Intelligent Key Unit

• Luggage area antenna
• Between Intelligent Key unit and luggage area antenna

Connector

Item

Terminals

Condition

Signal (V)

(Reference value)

(+)

(–)

M164

Intelligent 

Key unit

33

Ground

Ignition 
switch is 
pushed.

ALKIA0589ZZ

PIIB7441E

2011 Pathfinder

LUGGAGE AREA ANTENNA

DLK-53

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

1. Disconnect Intelligent Key unit connector and luggage area antenna connectors.

2. Check continuity between Intelligent Key unit harness connector (A) M164 terminals 33, 34 and luggage

area antenna harness connector (B) B129 terminals 1, 2.

3. Check continuity between Intelligent Key unit harness connector

(A) M164 terminals 33, 34 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness between Intelligent Key unit and luggage area antenna.

3.

CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL

1. Replace luggage area antenna (New antenna or other antenna).

2. Connect Intelligent Key unit connector.

3. Check signal between Intelligent Key unit connector and ground

with oscilloscope.

Is the inspection result normal?

YES

>> Replace luggage area antenna.

NO

>> Replace Intelligent Key unit. Refer to 

SEC-113, "Removal and Installation"

.

Intelligent Key 
unit connector

Terminals

Luggage area an-

tenna connector

Terminals

Continuity

A: M164

33

B: B129

1

Yes

34

2

Item

Connector

Terminals

Continuity

Intelligent Key 

unit

A: M164

33

Ground

No

34

ALKIA0590ZZ

Connector

Item

Terminals

Condition

Signal (V)

(Reference value)

(+)

(–)

M164

Intelligent 

Key unit

33

Ground

Ignition 
switch is 
pushed.

ALKIA0589ZZ

PIIB7441E

2011 Pathfinder

DLK-54

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

INTELLIGENT KEY UNIT
INTELLIGENT KEY UNIT : Diagnosis Procedure

INFOID:0000000006245447

Regarding Wiring Diagram information, refer to 

DLK-151, "Wiring Diagram"

.

1.

CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect Intelligent Key unit connector.

3. Check voltage between Intelligent Key unit harness connector

M70 terminals 6, 11 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace Intelligent Key power supply circuit.

2.

CHECK GROUND CIRCUIT

Check continuity between Intelligent Key unit harness connector

M70 terminal 12 and ground.

Is the inspection result normal?

YES

>> Power supply and ground circuits are OK.

NO

>> Repair or replace the Intelligent Key unit ground circuit.

BCM (BODY CONTROL MODULE)
BCM (BODY CONTROL MODULE) : Diagnosis Procedure

INFOID:0000000006827764

Regarding Wiring Diagram information, refer to 

BCS-48, "Wiring Diagram"

.

1.

 CHECK FUSES AND FUSIBLE LINK

Check that the following fuses and fusible link are not blown.

Is the fuse blown?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit.

Connector

Terminals

Ignition switch position

M70

(+)

(–)

OFF

ON

6

Ground

0V

Battery voltage

11

Battery voltage

Battery voltage

WIIA1171E

12 - Ground

: Continuity should exist.

WIIA1172E

Terminal No.

Signal name

Fuses and fusible link No.

57

Battery power supply

21 (10A)

70

G (50A)

11

Ignition ACC or ON

4 (10A)

38

Ignition ON or START

1 (10A)

2011 Pathfinder

POWER SUPPLY AND GROUND CIRCUIT

DLK-55

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

NO

>> GO TO 2

2.

 CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM.

3. Check voltage between BCM harness connector and ground.

Is the measurement value normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK GROUND CIRCUIT

Check continuity between BCM harness connector and ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair or replace harness.

Connector

Terminals 

Power

source

Condition

Voltage (V) (Ap-

prox.)

(+)

(-)

M18

11

Ground

ACC 

power 

supply

Ignition 

switch 

ACC or 

ON

Battery voltage

38

Ground

Ignition 

power 

supply

Ignition 

switch ON 

or START

Battery voltage

M20

57

Ground

Battery 

power 

supply

Ignition 

switch 

OFF

Battery voltage

70

Ground

Battery 

power 

supply

Ignition 

switch 

OFF

Battery voltage

LIIA2415E

BCM

Ground

Continuity

Connector

Terminal

M20

67

Yes

LIIA0915E

2011 Pathfinder

DLK-56

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

DOOR SWITCH

DOOR SWITCH

Description

INFOID:0000000006245449

Detects door open/close condition.

Component Function Check

INFOID:0000000006245450

1.

CHECK FUNCTION

With CONSULT-III

Check door switches in data monitor mode with CONSULT-III.

Is the inspection result normal?

YES

>> Door switch is OK.

NO

>> Refer to 

DLK-56, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006245451

Regarding Wiring Diagram information, refer to 

DLK-139, "Wiring Diagram - With Intelligent Key System"

.

1.

CHECK DOOR SWITCHES INPUT SIGNAL

With CONSULT-III

Check door switches ("DOOR SW-DR", "DOOR SW-AS", "DOOR SW-RL", "DOOR SW-RR", "BACK DOOR

SW") in DATA MONITOR mode with CONSULT–III.

• When doors are open:

• When doors are closed:

Without CONSULT-III

Check voltage between BCM connector M18 or M19 terminals 12, 13, 43, 47, 48 and ground.

Monitor item

Condition

DOOR SW-DR

CLOSE 

→

 OPEN: OFF 

→

 ON

DOOR SW-AS

DOOR SW-RL

DOOR SW-RR

BACK DOOR SW

DOOR SW-DR

:ON

DOOR SW-AS

:ON

DOOR SW-RL

:ON

DOOR SW-RR

:ON

BACK DOOR SW

:ON

DOOR SW-DR

:OFF

DOOR SW-AS

:OFF

DOOR SW-RL

:OFF

DOOR SW-RR

:OFF

BACK DOOR SW

:OFF

2011 Pathfinder

DOOR SWITCH

DLK-57

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

Is the inspection result normal?

YES

>> Door switch circuit is OK.

NO

>> GO TO 2

2.

CHECK DOOR SWITCH CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect door switch and BCM.

3. Check continuity between BCM connector (A) M18, M19 terminals 12, 13, 43, 47, 48 and door switch con-

nector (B) B8 (Front LH), B108 (Front RH), B18 (Rear LH), B116 (Rear RH) terminal 2 or back door latch

connector (C) D502 terminal 3.

4. Check continuity between door switch connector (B) B8 (Front

LH),   B108 (Front RH), B18 (Rear LH), B116 (Rear RH) terminal

2 or back door latch connector (C) D502 terminal 3 and ground.

Is the inspection result normal?

YES

>> (Front and rear doors) GO TO 3.

YES

>> (Back door) GO TO 4.

NO

>> Repair or replace harness.

3.

CHECK DOOR SWITCH

• Check continuity between door switch terminals.

Connec-

tor

Item

Terminals

Condition

Voltage (V)

(Approx.)

( + )

( – )

M19

Back door 

switch/latch

43

Ground

Open

↓

Closed

0

↓

Battery voltage

Front door 

switch LH

47

Rear door 

switch LH

48

M18

Front door 

switch RH

12

Rear door 
switch RH

13

LIIA1041E

2 - 47

:Continuity should exist

2 - 12

:Continuity should exist

2 - 48

:Continuity should exist

2 - 13

:Continuity should exist

3 - 43

:Continuity should exist

2 - Ground

:Continuity should not exist

3 - Ground

:Continuity should not exist

ALKIA1701ZZ

2011 Pathfinder