Nissan Quest E52. Manual - part 379

DLK-230

< DTC/CIRCUIT DIAGNOSIS >

B2623 INSIDE ANTENNA

B2623 INSIDE ANTENNA

DTC Logic

INFOID:0000000009649134

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-230, "Diagnosis Procedure"

.

NO

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

Diagnosis Procedure

INFOID:0000000009649135

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-98, "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 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)
• Harness or connector

(Front inside key antenna (luggage 
room) circuit is open or shorted)

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M124

88, 89

Ground

When Intelligent Key is in the 
antenna detection area

When Intelligent Key is not in 
the antenna detection area

JMKIA3839GB

JMKIA5951GB

B2623 INSIDE ANTENNA

DLK-231

< DTC/CIRCUIT DIAGNOSIS >

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 (luggage room). (New antenna or other antenna)

2.

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

3.

Check signal between BCM harness connector and ground using oscilloscope.

Is the inspection result normal?

YES

>> Replace inside key antenna (luggage room).

NO

>> Replace BCM. Refer to 

BCS-98, "Removal and Installation"

.

BCM

Inside key antenna (luggage room)

Continuity 

Connector

Terminal

Connector

Terminal

M124

88

B241

1

Existed

89

2

BCM

Ground

Continuity 

Connector

Terminal

M124

88

Not existed

89

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M124

88, 89

Ground

When Intelligent Key is in the 
antenna detection area

When Intelligent Key is not in 
the antenna detection area

JMKIA3839GB

JMKIA5951GB

DLK-232

< DTC/CIRCUIT DIAGNOSIS >

B2626 OUTSIDE ANTENNA

B2626 OUTSIDE ANTENNA

DTC Logic

INFOID:0000000009649136

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-232, "Diagnosis Procedure"

.

NO

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

Diagnosis Procedure

INFOID:0000000009649137

1.

CHECK OUTSIDE 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-98, "Removal and Installation"

.

NO

>> GO TO 2.

2.

CHECK OUTSIDE KEY ANTENNA CIRCUIT

1.

Disconnect BCM connector and front door outside handle assembly RH connector.

2.

Check continuity between BCM harness connector and front door outside handle assembly RH harness
connector.

DTC

CONSULT display 

description

DTC detecting condition

Possible cause

B2626

OUTSIDE ANTENNA

An excessive high or low voltage from front door 
right outside key antenna is sent to BCM

• Front door right outside key anten-

na

• Harness or connector

(Front door right outside key an-
tenna circuit is open or shorted)

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M124

80, 81

Ground

When the passenger 
door request switch is 
operated with power 
switch ON

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

When Intelligent Key 
is not in the antenna 
detection area (The 
distance between In-
telligent Key and an-
tenna: Approx. 2 m)

JMKIA5955GB

JMKIA5954GB

B2626 OUTSIDE ANTENNA

DLK-233

< DTC/CIRCUIT DIAGNOSIS >

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 OUTSIDE KEY ANTENNA INPUT SIGNAL 2

1.

Replace outside key antenna (passenger side). (New antenna or other antenna)

2.

Connect BCM connector and front door outside handle assembly RH connector.

3.

Turn ignition switch ON.

4.

Check signal between BCM harness connector and ground using oscilloscope.

Is the inspection result normal?

YES

>> Replace front door outside handle assembly RH (outside key antenna).

NO

>> Replace BCM. Refer to 

BCS-98, "Removal and Installation"

.

BCM

Front door outside handle assembly RH

Continuity 

Connector

Terminal

Connector

Terminal

M124

80

D31

1

Existed

81

2

BCM

Ground

Continuity 

Connector

Terminal

M124

80

Not existed

81

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M124

80, 81

Ground

When the passenger 
door request switch is 
operated with power 
switch ON

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

When Intelligent Key 
is not in the antenna 
detection area (The 
distance between In-
telligent Key and an-
tenna: Approx. 2 m)

JMKIA5955GB

JMKIA5954GB