Nissan X-Trail 32. Manual - part 1899

SN-52

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT PARK ASSIST]

B2721-14 CENTER SENSOR [RL]

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace malfunctioning parts.

3.

CHECK REAR SENSOR GROUND CIRCUIT

Check the continuity between sonar control unit harness connector and center sensor rear LH harness con-
nector.

Is the inspection result normal?

YES

>> Replace center sensor rear LH. Refer to 

SN-114, "REAR : Removal and Installation"

.

NO

>> Repair or replace malfunctioning parts.

Terminals

Continuity

(+)

(

−

)

Sonar control unit

Connector

Terminal

B101

21

Ground

Not existed

Sonar control unit

Center sensor rear LH

Continuity

Connector

Terminal

Connector

Terminal

B101

14

B121

1

Existed

SN

B2721-55 CENTER SENSOR [RL]

SN-53

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT PARK ASSIST]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

B2721-55 CENTER SENSOR [RL]

DTC Description

INFOID:0000000010735564

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Center sensor rear LH
• Control unit setting of sonar control unit is incomplete

FAIL-SAFE

• Obstacle detection function is stopped
• Alarm display is displayed on the information display of combination meter

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1.

Turn ignition switch ON.

2.

Turn ignition switch OFF and wait at least 30 seconds.

3.

Turn ignition switch ON and wait at least 30 seconds or more.

4.

Select “Self Diagnostic Result” mode of “SONAR” using CONSULT.

5.

Check DTC.

Is DTC B2721-55 detected?

YES

>> Proceed to 

SN-53, "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:0000000010735565

1.

PERFORM CONFIGURATION OF SONAR CONTROL UNIT

Perform configuration of sonar control unit. Refer to 

SN-41, "CONFIGURATION (SONAR CONTROL UNIT) :

Work Procedure"

.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

Perform DTC confirmation procedure again. Refer to 

SN-53, "DTC Description"

.

Is DTC B2721-55 detected again?

YES

>> Replace center sensor rear LH. Refer to 

SN-114, "REAR : Removal and Installation"

.

NO

>> INSPECTION END.

DTC

Trouble diagnosis

(Trouble diagnosis contents)

Detecting condition

B2721-55

CENTER SENSOR [RL]
(Center sensor rear-left)

CONFIG ERROR
(Configuration er-
ror)

Control unit setting of sonar control unit is incomplete or is not set 
normally.

SN-54

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT PARK ASSIST]

B2721-92 CENTER SENSOR [RL]

B2721-92 CENTER SENSOR [RL]

DTC Description

INFOID:0000000010735566

DTC DETECTION LOGIC

POSSIBLE CAUSE

Center sensor rear LH

FAIL-SAFE

• Obstacle detection function is stopped
• Alarm display is displayed on the information display of combination meter

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1.

Turn ignition switch ON.

2.

Turn ignition switch OFF and wait at least 30 seconds.

3.

Turn ignition switch ON and wait at least 30 seconds or more.

4.

Select “Self Diagnostic Result” mode of “SONAR” using CONSULT.

5.

Check DTC.

Is DTC B2721-92 detected?

YES

>> Proceed to 

SN-54, "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:0000000010735567

1.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

1.

Turn ignition switch ON.

2.

Erase DTC.

3.

Perform DTC confirmation procedure again. Refer to 

SN-54, "DTC Description"

.

Is DTC B2721-92 detected again?

YES

>> Replace center sensor rear LH. Refer to 

SN-114, "REAR : Removal and Installation"

.

NO

>> INSPECTION END

DTC

Trouble diagnosis

(Trouble diagnosis contents)

Detecting condition

B2721-92

CENTER SENSOR [RL]
(Center sensor rear-left)

SENSOR
(Sensor)

Center sensor rear LH malfunction is detected when ignition switch 
is turned ON.

SN

B2722-12 CENTER SENSOR [RR]

SN-55

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT PARK ASSIST]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

B2722-12 CENTER SENSOR [RR]

DTC Description

INFOID:0000000010735568

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors (Center sensor rear RH circuit)
• Center sensor rear RH 

FAIL-SAFE

• Obstacle detection function is stopped
• Alarm display is displayed on the information display of combination meter

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1.

Turn ignition switch ON.

2.

Turn ignition switch OFF and wait at least 30 seconds.

3.

Turn ignition switch ON and wait at least 30 seconds or more.

4.

Select “Self Diagnostic Result” mode of “SONAR” using CONSULT.

5.

Check DTC.

Is DTC B2722-12 detected?

YES

>> Proceed to 

SN-55, "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:0000000010735569

1.

CHECK CENTER SENSOR SIGNAL REAR RH CIRCUIT FOR SHORT (1)

1.

Turn ignition switch OFF.

2.

Disconnect sonar control unit harness connector and center sensor rear RH connector.

3.

Turn ignition switch ON.

4.

Check the voltage between sonar control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace malfunctioning parts.

2.

CHECK CENTER SENSOR SIGNAL REAR RH CIRCUIT FOR SHORT (2)

Check the continuity between center sensor rear RH harness connector and ground.

DTC

Trouble diagnosis

(Trouble diagnosis contents)

Detecting condition

B2722-12

CENTER SENSOR [RR]
(Center sensor rear-right)

SHORT-BAT
(Short to battery)

Short circuit to power supply is detected in harness between sonar 
control unit and center sensor rear RH when ignition switch is turned 
ON.

Terminals

Voltage

(Approx.)

(+)

(

−

)

Sonar control unit

Connector

Terminal

B101

9

Ground

0 V