Nissan X-Trail 32. Manual - part 450

B2426 ENCODER

DLK-141

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 1]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

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 malfunctioning parts.

8.

REPLACE SPINDLE UNIT

1.

Replace spindle unit

2.

Erase DTC.

3.

Perform DTC confirmation procedure for DTC 2426. Refer to 

DLK-139, "DTC Description"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace automatic back door control unit. Refer to 

DLK-327, "Removal and Installation"

.

Automatic back door control unit

Ground

Continuity 

 Connector

Terminal

B24

21

Not existed

DLK-142

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 1]

B2427 ENCODER

B2427 ENCODER

DTC Description

INFOID:0000000010708095

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Improper installation of back door assembly
• [CALIBRATION OF AUTOMATIC BACK DOOR POSITION INFORMATION]: not complete
• Back door mechanism
• Encoder
• Harness or connectors (encoder 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-142, "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:0000000010708096

1.

CALIBRATION OF AUTOMATIC BACK DOOR POSITION INFORMATION

1.

Perform initialization setting of automatic back door position information.
Refer to 

DLK-117, "Work Procedure"

.

2.

Erase DTC, and then repeat “PERFORM DTC CONFIRMATION PROCEDURE”.

Is DTC detected?

YES

>> GO TO 2.

NO

>> INSPECTION END

2.

CHECK INSTALLATION OF BACK DOOR ASSEMBLY

1.

Check that back door assembly is installed normally.
Refer to 

DLK-293, "BACK DOOR ASSEMBLY : Adjustment"

.

2.

Check back door assembly mechanism deformation, looseness, rattle, interference with other parts, and
pinched foreign materials.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace the malfunctioning parts.

3.

CHECK ENCODER SIGNAL

1.

Turn ignition switch ON.

2.

Select “AUTO BACK DOOR” using CONSULT.

3.

Select “SPINDLE RH ENCODER A” and “SPINDLE RH ENCODER B” in “DATA MONITOR” mode.

4.

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

DTC No.

CONSULT screen items (Trou-

ble diagnosis content)

DTC detecting condition

B2427

SPINDLE SENSOR RH

(Spindle sensor right handle)

When the automatic back door control unit can not receive the pulse signal 
from the encoder just after starting the open/close operation

B2427 ENCODER

DLK-143

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 1]

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

>> Replace automatic back door control unit. Refer to 

DLK-327, "Removal and Installation"

.

4.

CHECK ENCODER POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect spindle unit RH connector.

3.

Check voltage between spindle unit RH harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

CHECK ENCODER CIRCUIT

1.

Disconnect automatic back door control unit connector.

2.

Check continuity between automatic back door control unit harness connector and spindle unit RH har-
ness 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-327, "Removal and Installation"

.

NO

>> Repair or replace harness.

6.

CHECK ENCODER CIRCUIT 2

1.

Disconnect automatic back door control unit connector.

2.

Check continuity between automatic back door control unit harness connector and spindle unit RH har-
ness connector.

3.

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

Monitor item

Condition

Status

SPINDLE RH ENCODER A

Back door

Moving (auto or manu-
al)

HI 

⇔

 LO

When stopped

HI or LO

SPINDLE RH ENCODER B

Moving (auto or manu-
al)

HI 

⇔

 LO

When stopped

HI or LO

(+)

(–)

Voltage

(Approx.)

Spindle unit RH

Connector

Terminal

B29

3

Ground

12.3 V

Automatic back door control unit

Spindle unit RH

Continuity 

 Connector

Terminal

 Connector

Terminal

B24

20

B29

3

Existed

Automatic back door control unit

Ground

Continuity 

 Connector

Terminal

B24

20

Not existed

Automatic back door control unit

Spindle unit RH

Continuity 

 Connector

Terminal

 Connector

Terminal

B24

21

B29

6

Existed

DLK-144

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 1]

B2427 ENCODER

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 malfunctioning parts.

8.

REPLACE SPINDLE UNIT

1.

Replace spindle unit

2.

Erase DTC.

3.

Perform DTC confirmation procedure for DTC 2427. Refer to 

DLK-142, "DTC Description"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace automatic back door control unit. Refer to 

DLK-327, "Removal and Installation"

.

Automatic back door control unit

Ground

Continuity 

 Connector

Terminal

B24

21

Not existed