Nissan Quest E52. Instruction — part 378

DLK-226

< DTC/CIRCUIT DIAGNOSIS >

B2621 INSIDE ANTENNA

B2621 INSIDE ANTENNA

DTC Logic

INFOID:0000000009649130

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-226, "Diagnosis Procedure"

.

NO

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

Diagnosis Procedure

INFOID:0000000009649131

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 (instrument center) connector.

DTC

CONSULT display

description

DTC detecting condition

Possible cause

B2621

INSIDE ANTENNA

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

• Inside key antenna (instrument

center)

• Harness or connector

(Front inside key antenna (instru-
ment center) circuit is open or
shorted)

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M124

84, 85

Ground

When Intelligent Key is in the
antenna detection area

When Intelligent Key is not in
the antenna detection area

JMKIA3839GB

JMKIA5951GB

B2621 INSIDE ANTENNA

DLK-227

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

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-98, "Removal and Installation"

.

BCM

Inside key antenna (instrument center)

Continuity

Connector

Terminal

Connector

Terminal

M124

84

M105

1

Existed

85

2

BCM

Ground

Continuity

Connector

Terminal

M124

84

Not existed

85

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M124

84, 85

Ground

When Intelligent Key is in the
antenna detection area

When Intelligent Key is not in
the antenna detection area

JMKIA3839GB

JMKIA5951GB

DLK-228

< DTC/CIRCUIT DIAGNOSIS >

B2622 INSIDE ANTENNA

B2622 INSIDE ANTENNA

DTC Logic

INFOID:0000000009649132

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-228, "Diagnosis Procedure"

.

NO

>> Inside key antenna (console) is OK.

Diagnosis Procedure

INFOID:0000000009649133

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 (console) connector.

2.

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

DTC

CONSULT 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)
• Harness or connector

(Front inside key antenna (con-
sole) circuit is open or shorted)

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M124

86, 87

Ground

When Intelligent Key is in the
antenna detection area

When Intelligent Key is not in the
antenna detection area

JMKIA3839GB

JMKIA5951GB

B2622 INSIDE ANTENNA

DLK-229

< 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 (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-98, "Removal and Installation"

.

BCM

Inside key antenna (console)

Continuity

Connector

Terminal

Connector

Terminal

M124

86

B242

1

Existed

87

2

BCM

Ground

Continuity

Connector

Terminal

M124

86

Not existed

87

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M124

86, 87

Ground

When Intelligent Key is in the
antenna detection area

When Intelligent Key is not in the
antenna detection area

JMKIA3839GB

JMKIA5951GB