Nissan X-Trail 32. Manual - part 522

B2401 IGNITION POWER SUPPLY CIRCUIT

DLK-429

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

Is the inspection result normal?

YES

>> GO TO 4.

NO-1

>> Automatic back door control unit NG: Replace automatic back door control unit, refer to 

DLK-633,

"Removal and Installation"

.

NO-2

>> IPDM E/R NG: Replace BCM, refer to 

BCS-121, "Removal and Installation"

.

4.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-44, "Intermittent Incident"

.

>> INSPECTION END

IGN SW

Ignition switch (IPDM E/R judg-
ment)

ON

ON

OFF

OFF

Monitor item

Condition

Status

DLK-430

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

B2409 HALF LATCH SWITCH

B2409 HALF LATCH SWITCH

DTC Description

INFOID:0000000010717479

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Entry of foreign materials to back door lock assembly
• Back door mechanism
• Half latch switch 
• Harness or connectors (half latch switch circuit is open or shorted)
• Automatic back door control unit

FAIL-SAFE

Inhibit automatic back door operation

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Operate automatic back door.

3.

Check “Self Diagnostic Result” mode of “AUTO BACK DOOR” using CONSULT.

Is DTC detected?

YES

>> Refer to 

DLK-430, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010717480

1.

CHECK FOR FOREIGN MATERIALS IN BACK DOOR LOCK ASSEMBLY

Check for entry of foreign materials in back door lock assembly.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Remove foreign materials.

2.

CHECK BACK DOOR OPEN/CLOSE OPERATION

Manually check open and close operation of back door.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace the malfunction parts.

3.

CHECK HALF LATCH SWITCH MONITOR ITEM

1.

Turn ignition switch ON.

2.

Select “AUTO BACK DOOR” using CONSULT.

3.

Select “HALF LATCH SW” in “DATA MONITOR” mode.

4.

Check that the function operates normally according to the following conditions.

Is the inspection result normal?

YES

>> GO TO 7.

DTC No.

CONSULT screen items (Trou-

ble diagnosis content)

DTC detecting condition

B2409

HALF LATCH SW
(Half latch switch)

Automatic back door control unit detects a malfunction of half latch switch 
during automatic operation of back door

Monitor item

Condition

Status

HALF LATCH SW

Back door

Fully closed

OFF

Open

ON

B2409 HALF LATCH SWITCH

DLK-431

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

NO

>> GO TO 4.

4.

CHECK HALF LATCH SWITCH INPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect back door lock assembly connector.

3.

Check voltage between back door lock assembly harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

CHECK HALF LATCH SWITCH CIRCUIT

1.

Disconnect automatic back door control unit connector.

2.

Check continuity between automatic back door control unit harness connector and back door lock assem-
bly harness connector.

3.

Check continuity between automatic back door control unit harness connector and ground.

Is the inspection result normal?

YES

>> Replace automatic back door control unit. Refer to 

DLK-633, "Removal and Installation"

.

NO

>> Repair or replace harness.

6.

CHECK HALF LATCH SWITCH GROUND CIRCUIT

Check continuity between back door lock assembly harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace harness.

7.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-44, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace the malfunction parts.

8.

REPLACE BACK DOOR LOCK ASSEMBLY

1.

Replace back door lock assembly. Refer to 

DLK-619, "DOOR LOCK : Removal and Installation"

.

2.

Erase DTC.

3.

Perform DTC CONFIRMATION PROCEDURE for DTC 2409. Refer to 

DLK-430, "DTC Description"

.

Is the inspection result normal?

(+)

(–)

Voltage

(Approx.)

Back door lock assembly

Connector

Terminal

D172

6

Ground

12 V

Automatic back door control unit

Back door lock assembly

Continuity 

 Connector

Terminal

 Connector

Terminal

B24

3

D172

6

Existed

Automatic back door control unit

Ground

Continuity 

 Connector

Terminal

B24

3

Not existed

Back door lock assembly

Ground

Continuity 

 Connector

Terminal

D172

8

Existed

DLK-432

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

B2409 HALF LATCH SWITCH

YES

>> INSPECTION END

NO

>> Replace automatic back door control unit. Refer to 

DLK-633, "Removal and Installation"

.