Nissan X-Trail 32. Manual - part 1944

SN-232

< DTC/CIRCUIT DIAGNOSIS >

[WITH PARK ASSIST]

U1010-49 CONTROL UNIT (CAN)

U1010-49 CONTROL UNIT (CAN)

DTC Description

INFOID:0000000010736697

DTC DETECTION LOGIC

POSSIBLE CAUSE

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 2 seconds or more.

4.

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

5.

Check DTC.

Is DTC U1010-49 detected?

YES

>> Proceed to 

SN-232, "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:0000000010736698

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-232, "DTC Description"

.

Is DTC U1010-49 detected again?

YES

>> Replace sonar control unit. Refer to 

SN-237, "Removal and Installation"

.

NO

>> INSPECTION END

DTC

Trouble diagnosis

(Trouble diagnosis contents)

Detecting condition

U1010-49

CONTROL UNIT (CAN)
[Control unit (CAN)]

Malfunction is detected during initial diagnosis of the sonar control unit CAN con-
troller.

SN

POWER SUPPLY AND GROUND CIRCUIT

SN-233

< DTC/CIRCUIT DIAGNOSIS >

[WITH PARK ASSIST]

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POWER SUPPLY AND GROUND CIRCUIT

SONAR CONTROL UNIT

SONAR CONTROL UNIT : Diagnosis Procedure

INFOID:0000000010736703

1.

CHECK FUSE

Check for blown fuses.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Be sure to eliminate cause of malfunction before installing new fuse.

2.

CHECK IGNITION POWER SUPPLY CIRCUIT

1.

Turn ignition switch ON.

2.

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

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace sonar control unit power supply harness.

3.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect sonar control unit connector.

3.

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

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace sonar control unit ground harness.

Power source

Fuse No.

Ignition switch ON or START

#30

Terminals

Condition

Standard

Reference value

(+)

(

−

)

Sonar control unit

Connector

Terminal

B129

14

Ground

Ignition switch ON

9.0 - 16.0 V

Battery voltage

Sonar control unit

Ground

Continuity

Connector

Terminal

B128

13

Existed

SN-234

< DTC/CIRCUIT DIAGNOSIS >

[WITH PARK ASSIST]

SONAR SYSTEM SWITCH CIRCUIT

SONAR SYSTEM SWITCH CIRCUIT

Description

INFOID:0000000010828083

The sonar control unit turns the sonar system activation OFF when inputting the sonar system switch signal.

Diagnosis Procedure

INFOID:0000000010828084

1.

CHECK HARNESS SONAR SYSTEM SWITCH SIGNAL CIRCUIT

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 sonar system switch harness con-
nector.

4.

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 HARNESS SONAR SYSTEM SWITCH GROUND CIRCUIT

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

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK VOLTAGE SONAR CONTROL UNIT

1.

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

2.

Turn ignition switch ON.

3.

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

Is the inspection result normal?

YES

>> Replace sonar system switch. Refer to 

SN-238, "Removal and Installation"

.

NO

>> Replace sonar control unit. Refer to 

SN-237, "Removal and Installation"

.

Sonar control unit

Sonar system switch

Continuity

Connector

Terminal

Connector

Terminal

B128

16

M142

16

Existed

Sonar control unit

Ground

Continuity

Connector

Terminal

B128

16

Not existed

Sonar system switch

Ground

Continuity

Connector

Terminal

M142

2

Existed

(+)

(

−

)

Voltage

(Approx.)

Sonar control unit

Connector

Terminal

B128

16

Ground

12.0 V

SN

SONAR SYSTEM SYMPTOMS

SN-235

< SYMPTOM DIAGNOSIS >

[WITH PARK ASSIST]

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SYMPTOM DIAGNOSIS

SONAR SYSTEM SYMPTOMS

Symptom Table

INFOID:0000000010792966

Symptom

Check item

Diagnosis method

All sonar sensors do not acti-
vate.

—

Check sonar control unit power supply and ground 
circuit.
Refer to 

SN-233, "SONAR CONTROL UNIT : Di-

agnosis Procedure"

.

When there is no malfunction in those compo-
nents, replace the sonar control unit.
Refer to 

SN-237, "Removal and Installation"

.

Front sonar sensors do not ac-
tivate.

Buzzer does not 
beeps when indicating 
“On” on “FRONT 
BUZZER” screen of 
the ACTIVE TEST.
Refer to 

SN-131, 

"CONSULT Function"

.

Buzzer is beeped.

Check front sensor ground circuit.
Refer to 

SN-191, "Diagnosis Procedure"

.

Buzzer is not 
beeped.

Check front buzzer drive signal circuit.
Refer to 

SN-215, "Diagnosis Procedure"

.

Rear sonar sensors do not ac-
tivate.

Buzzer does not 
beeps when indicating 
“On” on “REAR BUZZ-
ER” screen of the AC-
TIVE TEST.
Refer to 

SN-131, 

"CONSULT Function"

.

Buzzer is beeped.

Check rear sensor ground circuit.
Refer to 

SN-158, "Diagnosis Procedure"

.

Buzzer is not 
beeped.

Check front rear buzzer drive signal circuit.
Refer to 

SN-215, "Diagnosis Procedure"

.