Nissan Sentra. Manual - part 241

DLK-80

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2623 INSIDE ANTENNA

Is the inspection result normal?

YES

>> Replace inside key antenna (trunk room).

NO

>> Replace BCM. Refer to 

BCS-73, "Removal and Installation"

.

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M83

43
42

Ground

When Intelligent Key is in the anten-
na detection area

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

JMKIA3839GB

JMKIA5951GB

B2626 OUTSIDE ANTENNA

DLK-81

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

B2626 OUTSIDE ANTENNA

DTC Logic

INFOID:0000000009756379

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

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Check “Self Diagnostic Result” mode of “BCM” using CONSULT.
Is DTC detected?

YES

>> Refer to 

DLK-81, "Diagnosis Procedure"

.

NO

>> Outside key antenna (driver side) is OK.

Diagnosis Procedure

INFOID:0000000009756380

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-49, "Wiring Diagram"

.

1.

CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 1

1. Turn ignition switch ON.

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

DTC

CONSULT display 

description

DTC detecting condition

Possible cause

B2626

OUTSIDE ANTENNA 
1

An excessive high or low voltage from outside key 
antenna (driver side) is sent to BCM

• Outside key antenna (driver side)
• Harness between BCM and out-

side key antenna (driver side)

• BCM

DLK-82

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2626 OUTSIDE ANTENNA

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-73, "Removal and Installation"

.

NO

>> GO TO 2.

2.

CHECK OUTSIDE KEY ANTENNA CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM connector and outside key antenna (driver side) connector.

3. Check continuity between BCM harness connector and outside key antenna (driver side) harness connec-

tor.

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 OUTSIDE KEY ANTENNA INPUT SIGNAL 2

1. Replace outside key antenna (driver side).  (New antenna or other antenna)

2. Connect BCM connector and outside key antenna (driver side) connector. 

3. Turn ignition switch ON.

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

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M83

53
52

Ground

When the driver door 
request switch is op-
erated with ignition 
switch OFF

When Intelligent 
Key is in the an-
tenna detection 
area (The dis-
tance between 
Intelligent Key 
and antenna: 80 
cm or less)

When Intelligent 
Key is not in the 
antenna detec-
tion area (The 
distance be-
tween Intelli-
gent Key and 
antenna: Ap-
prox. 2 m)

JMKIA5955GB

JMKIA5954GB

BCM

Outside key antenna (driver side)

Continuity 

Connector

Terminal

Connector

Terminal

M83

53

D6

1

Yes

52

2

BCM

Ground

Continuity 

Connector

Terminal

M83

53

No

52

B2626 OUTSIDE ANTENNA

DLK-83

< 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

>> Replace outside key antenna (driver side). 

NO

>> Replace BCM. Refer to 

BCS-73, "Removal and Installation"

.

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M83

52
53

Ground

When the driver 
door request switch 
is operated with igni-
tion switch OFF

When Intelligent 
Key is in the an-
tenna detection 
area (The dis-
tance between 
Intelligent Key 
and antenna: 80 
cm or less)

When Intelligent 
Key is not in the 
antenna detec-
tion area (The 
distance be-
tween Intelli-
gent Key and 
antenna: Ap-
prox. 2 m)

JMKIA5955GB

JMKIA5954GB