Nissan X-Trail 32. Manual - part 529

B242A CLOSURE CONDITION

DLK-457

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

C

D

E

F

G

H

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A

B

DLK

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P

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 4.

4.

CHECK 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 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 SWITCH GROUND CIRCUIT

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

Monitor item

Condition

Status

HALF LATCH SW

Back door

Fully closed

OFF

Open

ON

OPEN SW

Closure operation

ON

Other than above

OFF

CLOSE SW

Closure operation

ON

Other than above

OFF

(+)

(–)

Voltage

(Approx.)

Back door lock assembly

Connector

Terminal

D172

4

Ground

12.2 V

5

12.2 V

6

12  V

Automatic back door control unit

Back door lock assembly

Continuity 

 Connector

Terminal

 Connector

Terminal

B24

3

D172

6

Existed

5

5

11

4

Automatic back door control unit

Ground

Continuity 

 Connector

Terminal

B24

3

Not existed

5

11

DLK-458

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

B242A CLOSURE CONDITION

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace back door lock assembly ground circuit.

7.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-44, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace harness.

8.

REPLACE BACK DOOR LOCK ASSEMBLY

1.

Replace back door lock assembly.

2.

Erase DTC.

3.

Perform DTC confirmation procedure for DTC 242A. Refer to 

DLK-456, "DTC Description"

.

Is the inspection result normal?

YES

>> INSPECTION END.

NO

>> Replace automatic back door control unit. Refer to 

DLK-633, "Removal and Installation"

.

Back door lock assembly

Ground

Continuity 

 Connector

Terminal

D172

8

Existed

B242B HANDS FREE DETECT SENSOR

DLK-459

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

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B242B HANDS FREE DETECT SENSOR

DTC Description

INFOID:0000000010717503

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Hands free sensor
• Harness or connector (hands free sensor power supply circuit is open or shorted)
• Automatic back door control unit

FAIL-SAFE

Hands free sensor power supply: ON

→

OFF

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

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

Is DTC detected?

YES

>> Refer to 

DLK-459, "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:0000000010717504

1.

CHECK HANDS FREE POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect automatic back door control unit connector and hands free sensor connector.

3.

Check continuity between automatic back door control unit harness connector and hands free sensor har-
ness connector.

4.

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

Is the inspection result normal?

YES

>> Replace hands free sensor.

NO

>> Repair or replace harness.

DTC No.

CONSULT screen items (Trou-

ble diagnosis content)

DTC detecting condition

B242B

DETECT SENSOR POWER 

SUPPLY

(Detect sensor power supply)

An excessive high voltage from hands free sensor power supply is sent to 
automatic back door control unit.

Automatic back door control unit

Hands free sensor

Continuity 

Connector

Terminal

Connector

Terminal

B25

30

D170

1

Existed

Automatic back door control unit

Ground

Continuity 

Connector

Terminal

B25

30

Not existed

DLK-460

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

B2621 INSIDE ANTENNA

B2621 INSIDE ANTENNA

DTC Description

INFOID:0000000010717505

DTC DETECTION LOGIC

POSSIBLE CAUSE

• BCM
• Inside key antenna (instrument center)
• Harness or connector [inside key antenna (instrument center) circuit is open or shorted]

FAIL-SAFE

–

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-460, "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:0000000010717506

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1

1.

Turn ignition switch ON.

2.

Check signal between BCM harness connector and ground with oscilloscope.

DTC No.

CONSULT screen items (Trou-

ble diagnosis content)

DTC detecting condition

B2621–00

INSIDE ANTENNA

(Inside antenna)

An excessive high or low voltage from inside key antenna (instrument cen-
ter) is sent to BCM.