Nissan Murano. Manual - part 370

B2622 INSIDE ANTENNA

DLK-91

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

B2622 INSIDE ANTENNA

Description

INFOID:0000000009718970

Detects whether Intelligent Key is inside the vehicle.
Installed in the console.

DTC Logic

INFOID:0000000009718971

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1.

Perform inside key antenna (“INSIDE ANT DIAGNOSIS”) on “Work Support” of “INTELLIGENT KEY”.

2.

Perform “INTELLIGENT KEY” Self Diagnostic Result.

Is inside key antenna DTC detected?

YES

>> Refer to 

DLK-91, "Diagnosis Procedure"

.

NO

>> Inside key antenna (console) is OK.

Diagnosis Procedure

INFOID:0000000009718972

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1

1.

Turn ignition switch OFF.

2.

Check signal between BCM harness connector and ground with oscilloscope.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK INSIDE KEY ANTENNA CIRCUIT

1.

Disconnect BCM and inside key antenna (console) connector.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2622

INSIDE ANTENNA 2 
CIRCUIT

An excessive high or low voltage from inside anten-
na is sent to BCM.

• Inside key antenna (console)
• Between BCM

∼

Inside key anten-

na (console)

(+)

(–)

Condition

Signal

(Reference value.)

BCM

Connector

Terminal

M122

Console

72, 73

Ground

Place Intelligent Key inside the 
vehicle.

Place Intelligent Key outside the 
vehicle. 

JMKIA0062GB

JMKIA0063GB

DLK-92

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2622 INSIDE ANTENNA

2.

Check continuity between BCM harness connector and inside key antenna harness connector.

3.

Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness between BCM and inside key antenna.

3.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL 2

1.

Replace inside key antenna (console). (New antenna or other antenna)

2.

Connect BCM and inside key antenna (console) connector.

3.

Check signal between BCM harness connector and ground with oscilloscope.

Is the inspection result normal?

YES

>> Replace inside key antenna (console). Refer to 

DLK-359, "CONSOLE : Removal and Installation"

.

NO

>> Replace BCM. Refer to 

BCS-98, "Removal and Installation"

.

4.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-44, "Intermittent Incident"

.

>> INSPECTION END

BCM

Inside key antenna (console)

Continuity 

Connector

Terminal

Connector

Terminal

M122

72

M305

2

Existed

73

1

BCM

Ground

Continuity 

Connector

Terminal

M122

Console

72

Not existed

73

(+)

(–)

Condition

Signal

(Reference value.)

BCM

Connector

Terminal

M122

Console

72, 73

Ground

Place Intelligent Key inside the 
vehicle.

Place Intelligent Key outside the 
vehicle. 

JMKIA0062GB

JMKIA0063GB

B2623 INSIDE ANTENNA

DLK-93

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

B2623 INSIDE ANTENNA

Description

INFOID:0000000009718973

Detects whether Intelligent Key is inside the vehicle.
Installed in the luggage room.

DTC Logic

INFOID:0000000009718974

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1.

Perform inside key antenna (“INSIDE ANT DIAGNOSIS”) on “Work Support” of “INTELLIGENT KEY”.

2.

Perform “INTELLIGENT KEY” Self Diagnostic Result.

Is inside key antenna DTC detected?

YES

>> Refer to 

DLK-93, "Diagnosis Procedure"

.

NO

>> Inside key antenna (luggage room) is OK.

Diagnosis Procedure

INFOID:0000000009718975

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1

1.

Turn ignition switch OFF.

2.

Check signal between BCM harness connector and ground with oscilloscope.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK INSIDE KEY ANTENNA CIRCUIT

1.

Disconnect BCM and inside key antenna (luggage room) connector.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2623

INSIDE ANTENNA 3 
CIRCUIT

An excessive high or low voltage from inside anten-
na is sent to BCM.

• Inside key antenna (luggage room)
• Between BCM

∼

Inside key anten-

na (luggage room)

Terminals

Condition

Signal

(Reference value.)

(+)

(–)

BCM connector

Terminal

M121

Luggage room

34, 35

Ground

Place Intelligent Key inside the 
vehicle.

Place Intelligent Key outside 
the vehicle. 

JMKIA0062GB

JMKIA0063GB

DLK-94

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2623 INSIDE ANTENNA

2.

Check continuity between BCM harness connector and inside key antenna (luggage room) harness con-
nector.

3.

Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness between BCM and inside key antenna (luggage room).

3.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL 2

1.

Replace inside key antenna (luggage room). (New antenna or other antenna)

2.

Connect BCM and inside key antenna (luggage room) connector.

3.

Check signal between BCM harness connector and ground with oscilloscope.

Is the inspection result normal?

YES

>> Replace inside key antenna (luggage room). Refer to 

DLK-360, "LUGGAGE ROOM : Removal

and Installation"

.

NO

>> Replace BCM. Refer to 

BCS-98, "Removal and Installation"

.

4.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-44, "Intermittent Incident"

.

>> INSPECTION END

BCM

Inside key antenna

Continuity 

Connector

Terminal

Connector

Terminal

M121

34

B49

2

Existed

35

1

BCM

Ground

Continuity 

Connector

Terminal

M121

34

Not existed

35

(+)

(–)

Condition

Signal

(Reference value.)

BCM

Connector

Terminal

M121

Luggage room

34, 35

Ground

Place Intelligent Key inside 
the vehicle.

Place Intelligent Key outside 
the vehicle. 

JMKIA0062GB

JMKIA0063GB