Nissan X-Trail 32. Manual - part 1904

SN-72

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT PARK ASSIST]

B2728-11 LED

B2728-11 LED

DTC Description

INFOID:0000000011009380

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness between sonar control unit and sonar system switch
• Sonar control unit

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 B2728-11 detected?

YES

>> Proceed to 

SN-72, "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:0000000011009381

1.

CHECK SONAR SYSTEM SWITCH INDICATOR SIGNAL CIRCUIT FOR SHORT

1.

Turn ignition switch OFF.

2.

Disconnect sonar control unit harness connector and sonar system switch harness connector.

3.

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

Is the inspection result normal?

YES

>> Replace sonar control unit. Refer to 

SN-111, "Removal and Installation"

.

NO

>> Repair harness or connector.

DTC

Trouble diagnosis

(Trouble diagnosis contents)

Detection condition

B2728-11

LED
(Light emitting diode)

SHORT-GND
(Short to ground)

Short circuit to ground is detected in harness between sonar control 
unit and sonar system switch when ignition switch is turned ON.

Sonar control unit

Ground

Continuity

Connector

Terminal

B101

17

Not existed

SN

B2728-12 LED

SN-73

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT PARK ASSIST]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

B2728-12 LED

DTC Description

INFOID:0000000011009376

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness between sonar control unit and sonar system switch
• Sonar control unit

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 B2728-12 detected?

YES

>> Proceed to 

SN-73, "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:0000000011009377

1.

CHECK SONAR SYSTEM SWITCH INDICATOR SIGNAL CIRCUIT FOR SHORT

1.

Turn ignition switch OFF.

2.

Disconnect sonar control unit harness connector and sonar system switch harness connector.

3.

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

Is the inspection result normal?

YES

>> Replace sonar control unit. Refer to 

SN-111, "Removal and Installation"

.

NO

>> Repair harness or connector.

DTC

Trouble diagnosis

(Trouble diagnosis contents)

Detection condition

B2728-12

LED
(Light emitting diode)

SHORT-BAT
(Short to battery)

Short circuit to battery is detected in harness between sonar control 
unit and sonar system switch when ignition switch is turned ON.

Terminals

Voltage

(Approx.)

(+)

(

−

)

Sonar control unit

Connector

Terminal

B101

17

Ground

0 V

SN-74

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT PARK ASSIST]

B2728-14 LED

B2728-14 LED

DTC Description

INFOID:0000000011009373

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness between sonar control unit and sonar system switch
• Sonar control unit
• Sonar system switch

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 B2728-14 detected?

YES

>> Proceed to 

SN-74, "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:0000000011009374

1.

CHECK SONAR SYSTEM SWITCH INDICATOR SIGNAL CIRCUIT FOR SHORT

1.

Turn ignition switch OFF.

2.

Disconnect sonar control unit harness connector and sonar system switch harness connector.

3.

Check the 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 SONAR SYSTEM SWITCH INDICATOR SIGNAL CIRCUIT FOR OPEN

Check the continuity between sonar control unit harness connector and sonar system switch harness connec-
tor.

DTC

Trouble diagnosis

(Trouble diagnosis contents)

Detection condition

B2728-14

LED
(Light emitting diode)

OPEN/SHORT-
GND
(open/short to 
ground)

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

Sonar control unit

Ground

Continuity

Connector

Terminal

B101

17

Not existed

Sonar control unit

Sonar system switch

Continuity

Connector

Terminal

Connector

Terminal

B101

17

M142

5

Existed

SN

B2728-14 LED

SN-75

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT 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 harness or connector.

3.

CHECK SONAR SYSTEM SWITCH INDICATOR SIGNAL GROUND CIRCUIT

Check the continuity between sonar system switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK SONAR SYSTEM SWITCH

Check the sonar system switch. Refer to 

SN-75, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace sonar control unit. Refer to 

SN-111, "Removal and Installation"

.

NO

>> Replace sonar system switch. Refer to 

SN-112, "Removal and Installation"

.

Component Inspection

INFOID:0000000011009611

1.

CHECK SONAR SYSTEM SWITCH (1)

1.

Turn ignition switch OFF.

2.

Remove sonar system switch. Refer to 

SN-112, "Removal and Installation"

.

3.

Check the continuity between sonar system switch terminals.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace sonar system switch. Refer to 

SN-112, "Removal and Installation"

.

2.

CHECK SONAR SYSTEM SWITCH (2)

Check the continuity between sonar system switch terminals as per the following condition.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace sonar system switch. Refer to 

SN-112, "Removal and Installation"

.

Sonar system switch

Ground

Continuity

Connector

Terminal

M142

6

Existed

Sonar system switch

Continuity

Terminals

(+)

(

−

)

Terminal

5

6

Existed

Sonar system switch

Condition

Continuity

Terminal

1

2

Sonar sys-
tem switch

Press

Existed

Except for 
above

Not existed