Nissan X-Trail 32. Manual - part 1930

SN-176

< DTC/CIRCUIT DIAGNOSIS >

[WITH PARK ASSIST]

B2723-12 CORNER SENSOR [RR]

B2723-12 CORNER SENSOR [RR]

DTC Description

INFOID:0000000010736669

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors (Corner sensor rear RH circuit)
• Corner 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 B2723-12 detected?

YES

>> Proceed to 

SN-176, "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:0000000010736670

1.

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

1.

Turn ignition switch OFF.

2.

Disconnect sonar control unit harness connector and corner sensor rear RH harness 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 CORNER SENSOR REAR RH SIGNAL CIRCUIT FOR SHORT (2)

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

DTC

Trouble diagnosis

(Trouble diagnosis contents)

Detecting condition

B2723-12

CORNER SENSOR [RR]
(Corner sensor rear-right)

SHORT-BAT
(Short to battery)

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

Terminals

Voltage

(Approx.)

(+)

(

−

)

Sonar control unit

Connector

Terminal

B129

21

Ground

0 V

SN

B2723-12 CORNER SENSOR [RR]

SN-177

< DTC/CIRCUIT DIAGNOSIS >

[WITH PARK ASSIST]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

Is the inspection result normal?

YES

>> Replace corner sensor rear RH. Refer to 

SN-240, "REAR : Removal and Installation"

.

NO

>> Repair or replace malfunctioning parts.

Terminals

Continuity

(+)

(

−

)

Corner sensor rear RH

Connector

Terminal

B123

2

Ground

Not existed

SN-178

< DTC/CIRCUIT DIAGNOSIS >

[WITH PARK ASSIST]

B2723-14 CORNER SENSOR [RR]

B2723-14 CORNER SENSOR [RR]

DTC Description

INFOID:0000000010736671

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors (Corner sensor rear RH circuit)
• Corner 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 B2723-14 detected?

YES

>> Proceed to 

SN-178, "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:0000000010736672

1.

CHECK CORNER SENSOR REAR RH SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

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

3.

Check the continuity between sonar control unit harness connector and corner sensor rear RH harness
connector.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace malfunctioning parts.

2.

CHECK CORNER SENSOR REAR RH SIGNAL CIRCUIT FOR SHORT

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

DTC

Trouble diagnosis

(Trouble diagnosis contents)

Detecting condition

B2723-14

CORNER SENSOR [RR]
(Corner sensor rear-right)

OPEN/SHORT-
GND
(Open/Short to 
ground)

Short circuit to ground or open circuit is detected in harness be-
tween sonar control unit and corner sensor rear RH when ignition 
switch is turned ON.

Sonar control unit

Corner sensor rear RH

Continuity

Connector

Terminal

Connector

Terminal

B129

21

B123

2

Existed

SN

B2723-14 CORNER SENSOR [RR]

SN-179

< DTC/CIRCUIT DIAGNOSIS >

[WITH PARK ASSIST]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace malfunctioning parts.

3.

CHECK CORNER SENSOR REAR RH GROUND CIRCUIT

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

Is the inspection result normal?

YES

>> Replace corner sensor rear RH. Refer to 

SN-240, "REAR : Removal and Installation"

.

NO

>> Repair or replace malfunctioning parts.

Terminals

Continuity

(+)

(

−

)

Sonar control unit

Connector

Terminal

B129

21

Ground

Not existed

Sonar control unit

Corner sensor rear RH

Continuity

Connector

Terminal

Connector

Terminal

B129

22

B123

1

Existed