Nissan X-Trail 32. Manual - part 1912

SN-104

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT PARK ASSIST]

U1000-01 CAN COMM CIRCUIT

U1000-01 CAN COMM CIRCUIT

DTC Description

INFOID:0000000010735602

DESCRIPTION

CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independently). In CAN communication, control units are connected with 2
communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring. Each
control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to 

LAN-41, "CAN COMMUNICATION SYSTEM : CAN Communica-

tion Signal Chart"

.

DTC DETECTION LOGIC

POSSIBLE CAUSE

CAN communication system

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 U1000 detected?

YES

>> Proceed to 

SN-104, "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:0000000010735603

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-104, "DTC Description"

.

Is DTC U1000 detected again?

YES

>> Perform the trouble diagnosis for CAN communication system. Refer to 

LAN-17, "Trouble Diagno-

sis Flow Chart"

.

NO

>> INSPECTION END

DTC

Trouble diagnosis

(Trouble diagnosis contents)

Detecting condition

U1000

CAN COMM CIRCUIT
(CAN communication circuit)

Sonar control unit is not transmitting or receiving CAN communication signal for 
2 seconds or more.

SN

U1010-49 CONTROL UNIT (CAN)

SN-105

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT PARK ASSIST]

C

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U1010-49 CONTROL UNIT (CAN)

DTC Description

INFOID:0000000010735604

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-105, "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:0000000010735605

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-105, "DTC Description"

.

Is DTC U1010-49 detected again?

YES

>> Replace sonar control unit. Refer to 

SN-111, "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-106

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT PARK ASSIST]

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

SONAR CONTROL UNIT

SONAR CONTROL UNIT : Diagnosis Procedure

INFOID:0000000010735610

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

Voltage

(+)

(

−

)

Sonar control unit

Connector

Terminal

B101

12

Ground

Ignition switch ON

9.0 - 16.0 V

Battery voltage

Sonar control unit

Ground

Continuity

Connector

Terminal

B101

15

Existed

SN

SONAR SYSTEM SWITCH

SN-107

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT PARK ASSIST]

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SONAR SYSTEM SWITCH

Description

INFOID:0000000010792463

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

Diagnosis Procedure

INFOID:0000000010792465

1.

CHECK SONAR SYSTEM SWITCH SIGNAL

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 2.

NO

>> Replace sonar control unit. Refer to 

SN-111, "Removal and Installation"

.

2.

CHECK 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 3.

NO

>> Repair harness or connector.

3.

CHECK SONAR SYSTEM SWITCH 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.

Is the inspection result normal?

Terminals

Voltage

(Approx.)

(+)

(

−

)

Sonar control unit

Connector

Terminal

B101

16

Ground

12.0 V

Sonar control unit

Sonar system switch

Continuity

Connector

Terminal

Connector

Terminal

B101

16

M142

1

Existed

Sonar control unit

Ground

Continuity

Connector

Terminal

B101

16

Not existed

Sonar system switch

Ground

Continuity

Connector

Terminal

M142

2

Existed