Nissan March K13. Manual - part 84

B2621 INSIDE ANTENNA

DLK-47

< 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 BCM connector and inside key antenna (instrument center) connector.

2.

Check continuity between BCM harness connector and inside key antenna (instrument center) 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.

3.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL 2

1.

Replace inside key antenna (instrument center). (New antenna or other antenna)

2.

Connect BCM connector and inside key antenna (instrument center) connector.

3.

Check signal between BCM harness connector and ground using oscilloscope.

Is the inspection result normal?

YES

>> Replace inside key antenna (instrument center).

NO

>> Replace BCM. Refer to 

BCS-57, "Removal and Installation"

.

BCM

Inside key antenna (instrument center)

Continuity 

Connector

Terminal

Connector

Terminal

M71

84

M105

1

Existed

85

2

BCM

Ground

Continuity 

Connector

Terminal

M71

84

Not existed

85

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

Instrument center

M71

84, 85

Ground

When Intelligent Key is in 
the antenna detection area.

When Intelligent Key is not 
in the antenna detection ar-
ea.

JMKIA3839GB

JMKIA3838GB

DLK-48

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2622 INSIDE ANTENNA

B2622 INSIDE ANTENNA

DTC Logic

INFOID:0000000006064401

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Select “INTELLIGENT KEY” of “BCM” using CONSULT-III.

2.

Select “INSIDE ANT DIAGNOSIS” in “WORK SUPPORT” mode.

3.

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

4.

Check BCM for DTC.

Is inside key antenna DTC detected?

YES

>> Refer to 

DLK-48, "Diagnosis Procedure"

.

NO

>> Inside key antenna (console) is OK.

Diagnosis Procedure

INFOID:0000000006064402

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1

1.

Turn ignition switch OFF.

2.

Check signal between BCM harness connector and ground using oscilloscope.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-57, "Removal and Installation"

.

NO

>> GO TO 2.

2.

CHECK INSIDE KEY ANTENNA CIRCUIT

1.

Disconnect BCM connector and inside key antenna (console) connector.

2.

Check continuity between BCM harness connector and inside key antenna (console) harness connector.

DTC

CONSULT-III display 

description

DTC detecting condition

Possible cause

B2622

INSIDE ANTENNA

An excessive high or low voltage from inside anten-
na (console) is sent to BCM

• Inside key antenna (console)
• Between BCM

∼

Inside key anten-

na (console)

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

Console

M71

86, 87

Ground

When Intelligent Key is in the an-
tenna detection area

When Intelligent Key is not in the 
antenna detection area

JMKIA3839GB

JMKIA3838GB

B2622 INSIDE ANTENNA

DLK-49

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

3.

Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL 2

1.

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

2.

Connect BCM connector and inside key antenna (console) connector.

3.

Check signal between BCM harness connector and ground using oscilloscope.

Is the inspection result normal?

YES

>> Replace inside key antenna (console).

NO

>> Replace BCM. Refer to 

BCS-57, "Removal and Installation"

.

BCM

Inside key antenna (console)

Continuity 

Connector

Terminal

Connector

Terminal

M71

86

M106

1

Existed

87

2

BCM

Ground

Continuity 

Connector

Terminal

M71

86

Not existed

87

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

Console

M71

86, 87

Ground

When Intelligent Key is in the an-
tenna detection area

When Intelligent Key is not in the 
antenna detection area

JMKIA3839GB

JMKIA3838GB

DLK-50

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2623 INSIDE ANTENNA

B2623 INSIDE ANTENNA

DTC Logic

INFOID:0000000005948832

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Select “INTELLIGENT KEY” of “BCM” using CONSULT-III.

2.

Select “INSIDE ANT DIAGNOSIS” in “WORK SUPPORT” mode.

3.

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

4.

Check BCM for DTC.

Is inside key antenna DTC detected?

YES

>> Refer to 

DLK-50, "Diagnosis Procedure"

.

NO

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

Diagnosis Procedure

INFOID:0000000005948833

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1

1.

Turn ignition switch OFF.

2.

Check signal between BCM harness connector and ground using oscilloscope.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-57, "Removal and Installation"

.

NO

>> GO TO 2.

2.

CHECK INSIDE KEY ANTENNA CIRCUIT

1.

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

2.

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

DTC

CONSULT-III display 

description

DTC detecting condition

Possible cause

B2623

INSIDE ANTENNA

An excessive high or low voltage from inside anten-
na (luggage room) is sent to BCM

• Inside key antenna (luggage room)
• Between BCM

∼

Inside key anten-

na (luggage room)

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

Luggage 
room

M71

88, 89

Ground

When Intelligent Key is in the an-
tenna detection area

When Intelligent Key is not in the 
antenna detection area

JMKIA3839GB

JMKIA3838GB