Nissan X-Trail 32. Manual - part 1609

MWI-118

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORKFLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work flow

INFOID:0000000010715003

OVERALL SEQUENCE

• Reference 1···

MWI-84, "On Board Diagnosis Function"

.

• Reference 2···

MWI-105, "DTC Index"

.

• Reference 3···

MWI-134, "Diagnosis Procedure"

.

• Reference 4···

MWI-135, "Component Inspection"

.

• Reference 5···

MWI-129, "COMBINATION METER : Diagnosis Procedure"

.

DETAILED FLOW

1.

OBTAIN INFORMATION ABOUT SYMPTOM

Interview the customer to obtain as much information as possible about the conditions and environment under
which the malfunction occurred.

>> GO TO 2.

JSNIA4491GB

MWI

DIAGNOSIS AND REPAIR WORKFLOW

MWI-119

< BASIC INSPECTION >

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2.

CHECK SYMPTOM

• Check the symptom based on the information obtained from the customer.
• Check that any other malfunctions are present.

>> GO TO 3.

3.

CHECK ON BOARD DIAGNOSIS OPERATION

Check that the on board diagnosis function operates. Refer to 

MWI-84, "On Board Diagnosis Function"

. 

Does the on board diagnosis function operate normally?

YES

>> GO TO 4.

NO

>> GO TO 6.

4.

CHECK CONSULT SELF-DIAGNOSIS RESULTS

1.

Connect CONSULT and perform self-diagnosis. Refer to 

MWI-105, "DTC Index"

.

2.

When DTC is detected, follow the instructions below:

-

Record DTC and Freeze Frame Data.

Are self-diagnosis results normal?

YES

>> GO TO 5.

NO

>> GO TO 10.

5.

NARROW DOWN THE MALFUNCTIONING PARTS BY SYMPTOM DIAGNOSIS

Perform symptom diagnosis and narrow down the malfunctioning parts.

>> GO TO 10.

6.

CHECK METER CONTROL SWITCH SIGNAL CIRCUIT

Check meter control switch signal circuit. Refer to 

MWI-134, "Diagnosis Procedure"

. 

Is inspection result OK?

YES

>> GO TO 7.

NO

>> GO TO 10.

7.

CHECK METER CONTROL SWITCH

Check meter control switch. Refer to 

MWI-135, "Component Inspection"

. 

Is inspection result OK?

YES

>> GO TO 8.

NO

>> GO TO 10.

8.

CHECK COMBINATION METER POWER SUPPLY AND GROUND CIRCUITS

Check combination meter power supply and ground circuits. Refer to 

MWI-129, "COMBINATION METER :

Diagnosis Procedure"

. 

Is inspection result OK?

YES

>> GO TO 9.

NO

>> GO TO 10.

9.

REPLACE COMBINATION METER

Replace combination meter.

>> GO TO 11.

10.

REPAIR OR REPLACE MALFUNCTIONING PARTS

Repair or replace the malfunctioning parts.
NOTE:
If DTC is displayed, erase DTC after repair or replace malfunctioning parts.

>> GO TO 11.

MWI-120

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORKFLOW

11.

FINAL CHECK

Check that the combination meter operates normally.
Do they operate normally?

YES

>> INSPECTION END

NO

>> GO TO 1.

MWI

U1000 CAN COMM CIRCUIT

MWI-121

< DTC/CIRCUIT DIAGNOSIS >

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DTC/CIRCUIT DIAGNOSIS

U1000 CAN COMM CIRCUIT

DTC Description

INFOID:0000000010715004

CAN (Controller Area Network) is a serial communication system for real time application. It is an on-vehicle
multiplex communication system with high data communication speed and excellent error detectability. Many
electronic control units are equipped onto vehicles, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with two communication lines (CAN-H line, CAN-L line) 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

The combination meter activates the fail-safe control if CAN communication with each unit is malfunctioning.
Refer to 

MWI-103, "Fail-Safe"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait for 2 seconds or more.

2.

Check “Self Diagnostic Result” of “METER/M&A.”

Is “CAN COMM CIRCUIT” displayed?

YES

>> Refer to 

MWI-121, "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:0000000010715005

1.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

1.

Turn ignition switch ON.

2.

Erase DTC.

3.

Perform DTC confirmation procedure again. Refer to 

MWI-121, "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)

When combination meter is not transmitting or receiving CAN communication signal for 2 
seconds or more.