Nissan Versa Sedan. Instruction - part 187

DLK-66

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2621 INSIDE ANTENNA

DTC/CIRCUIT DIAGNOSIS

B2621 INSIDE ANTENNA

DTC Logic

INFOID:0000000009268741

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Select INTELLIGENT KEY of BCM using CONSULT.

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-66, "Diagnosis Procedure"

.

NO

>> Inside key antenna (instrument center) is OK.

Diagnosis Procedure

INFOID:0000000009268742

Regarding Wiring Diagram information, refer to 

DLK-37, "INTELLIGENT KEY SYSTEM : Wiring Diagram"

.

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1

1. Turn ignition switch ON.

2. Check signal between BCM harness connector and ground using oscilloscope.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-69, "Removal and Installation"

.

NO

>> GO TO 2.

DTC

CONSULT display 

description

DTC detecting condition

Possible cause

B2621

INSIDE ANTENNA 1

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

• Inside key antenna (instrument 

center)

• Between BCM Inside key antenna 

(instrument center)

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M98

84
85

Ground

When Intelligent Key is in the an-
tenna detection area

When Intelligent Key is not in the 
antenna detection area

JMKIA3839GB

JMKIA5951GB

B2621 INSIDE ANTENNA

DLK-67

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

2.

CHECK INSIDE KEY ANTENNA CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM connector and inside key antenna (instrument center) connector.

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

connector.

4. 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. Turn ignition switch ON.

4. Check signal between BCM harness connector and ground using oscilloscope.

Is the inspection result normal?

YES

>> Replace inside key antenna (instrument center). Refer to 

DLK-184, "INSTRUMENT CENTER :

Removal and Installation"

.

NO

>> Replace BCM. Refer to 

BCS-69, "Removal and Installation"

.

BCM

Inside key antenna (instrument center)

Continuity 

Connector

Terminal

Connector

Terminal

M98

84

M95

1

Yes

85

2

BCM

Ground

Continuity 

Connector

Terminal

M98

84

No

85

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M98

84
85

Ground

When Intelligent Key is in the an-
tenna detection area

When Intelligent Key is not in the 
antenna detection area

JMKIA3839GB

JMKIA5951GB

DLK-68

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2622 INSIDE ANTENNA

B2622 INSIDE ANTENNA

DTC Logic

INFOID:0000000009268743

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Select INTELLIGENT KEY of BCM using CONSULT.

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-68, "Diagnosis Procedure"

.

NO

>> Inside key antenna (console) is OK.

Diagnosis Procedure

INFOID:0000000009268744

Regarding Wiring Diagram information, refer to 

DLK-37, "INTELLIGENT KEY SYSTEM : Wiring Diagram"

.

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1

1. Turn ignition switch ON.

2. Check signal between BCM harness connector and ground using oscilloscope.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-69, "Removal and Installation"

.

NO

>> GO TO 2.

2.

CHECK INSIDE KEY ANTENNA CIRCUIT

1. Turn ignition switch OFF.

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

DTC

CONSULT display 

description

DTC detecting condition

Possible cause

B2622

INSIDE ANTENNA 2

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

• Inside key antenna (console)
• Between BCM Inside key antenna 

(console)

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M98

86
87

Ground

When Intelligent Key is in the anten-
na detection area

When Intelligent Key is not in the an-
tenna detection area

JMKIA3839GB

JMKIA5951GB

B2622 INSIDE ANTENNA

DLK-69

< 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 inside key antenna (console) harness connector.

4. 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. Turn ignition switch ON.

4. 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-69, "Removal and Installation"

.

BCM

Inside key antenna (console)

Continuity 

Connector

Terminal

Connector

Terminal

M98

86

M89

1

Yes

87

2

BCM

Ground

Continuity 

Connector

Terminal

M98

86

No

87

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M98

86
87

Ground

When Intelligent Key is in the anten-
na detection area

When Intelligent Key is not in the an-
tenna detection area

JMKIA3839GB

JMKIA5951GB