Nissan X-Trail 32. Manual - part 1940

SN-216

< DTC/CIRCUIT DIAGNOSIS >

[WITH PARK ASSIST]

B272D-12 FRONT BUZZER

Is the inspection result normal?

YES

>> Replace buzzer (frontward). Refer to 

SN-242, "FRONT : Removal and Installation"

.

NO

>> Repair harness or connector.

Sonar control unit

Ground

Standard

Reference value

(Approx.)

Connector

Terminal

B129

10

—

NOTE:
• Voltage depends on volume.
• Cycle depends on distance between sensor 

and obstacle.

JSNIA5232GB

SN

B272D-14 FRONT BUZZER

SN-217

< DTC/CIRCUIT DIAGNOSIS >

[WITH PARK ASSIST]

C

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B272D-14 FRONT BUZZER

DTC Description

INFOID:0000000010736701

DTC DETECTION LOGIC

POSSIBLE CAUSE

Harness between sonar control unit and buzzer (frontward)

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 B272D-14 detected?

YES

>> Proceed to 

SN-217, "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:0000000010736702

1.

CHECK CONTINUITY BUZZER (FRONTWARD) POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect sonar control unit connector and buzzer (frontward) connector.

3.

Check continuity between sonar control unit harness connector and buzzer (frontward) harness connec-
tor.

4.

Check continuity between sonar control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK CONTINUITY BUZZER DRIVE SIGNAL CIRCUIT

DTC

Trouble diagnosis

(Trouble diagnosis contents)

Detection condition

B272D-14

FRONT BUZZER
(Front buzzer)

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

A break in harness between sonar control unit and buzzer (front-
ward) or a short circuit between sonar control unit and ground is de-
tected when ignition switch is turned ON.

Sonar control unit

Buzzer (frontward)

Continuity

Connector

Terminal

Connector

Terminal

B129

2

M79

2

Existed

Sonar control unit

Ground

Continuity

Connector

Terminal

B129

2

Not existed

SN-218

< DTC/CIRCUIT DIAGNOSIS >

[WITH PARK ASSIST]

B272D-14 FRONT BUZZER

1.

Check continuity between sonar control unit harness connector and buzzer (frontward) harness connec-
tor.

2.

Check continuity between sonar control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK CONTINUITY SONAR CONTROL UNIT

1.

Check continuity between terminals of sonar control unit.

2.

Check continuity between sonar control unit harness connector and ground.

Is the inspection result normal?

YES

>> Replace buzzer (frontward). Refer to 

SN-242, "FRONT : Removal and Installation"

.

NO

>> Replace sonar control unit. Refer to 

SN-237, "Removal and Installation"

.

Sonar control unit

Buzzer (frontward)

Continuity

Connector

Terminal

Connector

Terminal

B129

10

M79

3

Existed

Sonar control unit

Ground

Continuity

Connector

Terminal

B129

10

Not existed

Sonar control unit

Continuity.

Terminal

2

10

Not existed

Sonar control unit

Ground

Continuity

Terminal

2

Not existed

10

SN

B272E-12 SIDE SENSOR [FL]

SN-219

< DTC/CIRCUIT DIAGNOSIS >

[WITH PARK ASSIST]

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B272E-12 SIDE SENSOR [FL]

DTC Description

INFOID:0000000010776920

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors (side sensor front LH circuit)
• Side sensor front 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 B272E-12 detected?

YES

>> Proceed to 

SN-225, "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:0000000010776921

1.

CHECK SIDE SENSOR SIGNAL FRONT LH CIRCUIT FOR SHORT (1)

1.

Turn ignition switch OFF.

2.

Disconnect sonar control unit harness connector and side sensor front LH 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 SIDE SENSOR SIGNAL FRONT LH CIRCUIT FOR SHORT (2)

Check the continuity between side sensor front LH harness connector and ground.

DTC

Trouble diagnosis

(Trouble diagnosis contents)

Detecting condition

B272E-12

SIDE SENSOR [FL]
(Side sensor front-left)

SHORT-BAT
(Short to battery)

Short circuit to power supply is detected in harness between sonar 
control unit and side sensor front LH when ignition switch is turned 
ON.

Terminals

Voltage

(Approx.)

(+)

(

−

)

Sonar control unit

Connector

Terminal

B128

28

Ground

0 V