2007 NISSAN LATIO Lan system

LAN-12
[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
Self-DiagnosisUKS005Y6
DTCSelf-diagnosis item
(CONSULT-II indication)DTC detection condition Inspection/Action
U1000 CAN COMM CIRCUITWhen ECM is not transmitting or receiving CAN
communication signal of OBD (emission-related
diagnosis) for 2 seconds or more.
Refer to LAN-15,
"TROUBLE DIAG-
NOSES WORK FLOW" . When a control unit (except for ECM) is not
transmitting or receiving CAN communication
signal for 2 seconds or more.
U1001 CAN COMM CIRCUITWhen ECM is not transmitting or receiving CAN
communication signal other than OBD (emis-
sion-related diagnosis) for 2 seconds or more.
U1002 SYSTEM COMMWhen a control unit is not transmitting or receiv-
ing CAN communication signal for 2 seconds or
less.Start the inspection.
Refer to the applicable
section of the indicated
control unit.
U1010 CONTROL UNIT [CAN]When an error is detected during the initial diag-
nosis for CAN controller of each control unit.Replace the control unit
indicating “U1010”.

TROUBLE DIAGNOSES WORK FLOW
LAN-15
[CAN FUNDAMENTAL]
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LAN
Revision: June 20062007 Versa
TROUBLE DIAGNOSES WORK FLOWPFP:00004
Information Needed for Trouble DiagnosisUKS005Y8
CAN communication system performs trouble diagnosis with the following tools.
How to Use CAN Communication Signal ChartUKS005Y9
The CAN communication signal chart lists the signals needed for trouble diagnosis. It is useful for detecting
the root cause by finding a signal related to the symptom, and by checking transmission and reception unit.
Tool Usage
Interview sheet For filling in vehicle information and interview with customer.
Data sheet For attaching CONSULT-II data or on-board diagnosis data.
Diagnosis sheetFor detecting the root cause. (Diagnosis sheet includes system diagram for every CAN system
type)
SELECT SYSTEM
(CONSULT-II)
For checking the condition of control units and the status of CAN communication. SELF-DIAG RESULTS
(CONSULT-II)
CAN DIAG SUPPORT MNTR
(CONSULT-II)
CAN communication signal
chartFor converting information received from a customer into CAN communication signal transmission
and reception. This information can be used to judge whether a circuit between control units is nor-
mal or abnormal.
Abbreviation list For checking abbreviations in CAN communication signal chart and diagnosis sheet.
SKIB8715E

TROUBLE DIAGNOSES WORK FLOW
LAN-17
[CAN FUNDAMENTAL]
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LAN
Revision: June 20062007 Versa
Trouble Diagnosis ProcedureUKS005YB
INTERVIEW WITH CUSTOMER
Interview with the customer is important to detect the root cause of CAN communication system errors and to
understand vehicle condition and symptoms for proper trouble diagnosis.
Points in interview

What: Parts name, system name

When: Date, Frequency

Where: Road condition, Place

In what condition: Driving condition/environment

Result: Symptom
NOTE:

Check normal units as well as error symptoms.
–Example: Circuit between ECM and the combination meter is judged normal if the customer indicates
tachometer functions normally.

When a CAN communication system error is present, multiple control units may malfunction or go into fail-
safe mode.

Indication of the combination meter is important to detect the root cause because it is the most obvious
from the customer, and it performs CAN communication with many units.
SKIB8717E

TROUBLE DIAGNOSES WORK FLOW
LAN-19
[CAN FUNDAMENTAL]
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Revision: June 20062007 Versa
CHECK OF CAN SYSTEM TYPE (HOW TO USE CAN SYSTEM TYPE SPECIFICATION CHART)
Determine CAN system type based on vehicle equipment. Then choose the correct diagnosis sheet.
NOTE:
There are two styles for CAN system type specification charts. Depending on the number of available system
types, either style A or style B may be used.
CAN System Type Specification Chart (Style A)
NOTE:
CAN system type is easily checked with the vehicle equipment identification information shown in the chart.
SKIB8888E

LAN-20
[CAN FUNDAMENTAL]
TROUBLE DIAGNOSES WORK FLOW
Revision: June 20062007 Versa
CAN System Type Specification Chart (Style B)
NOTE:
CAN system type is easily checked with the vehicle equipment identification information shown in the chart.
SKIB8889E

TROUBLE DIAGNOSES WORK FLOW
LAN-21
[CAN FUNDAMENTAL]
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LAN
Revision: June 20062007 Versa
CREATE INTERVIEW SHEET
Fill out the symptom described by the customer, vehicle condition, and CAN system type on the interview
sheet.
Interview Sheet (Example)
SKIB8890E

LAN-22
[CAN FUNDAMENTAL]
TROUBLE DIAGNOSES WORK FLOW
Revision: June 20062007 Versa
CREATE DATA SHEET
Create CONSULT-II Data Attachment Sheet
Print out the following CONSULT-II screens, and attach them to the CONSULT-II data attachment sheet.

SELECT SYSTEM

SELF-DIAG RESULTS

CAN DIAG SUPPORT MNTR
NOTE:
Some items may not be needed depending on CAN system type of vehicle.
SKIB8721E

LAN-24
[CAN FUNDAMENTAL]
TROUBLE DIAGNOSES WORK FLOW
Revision: June 20062007 Versa
CREATE DIAGNOSIS SHEET
NOTE:
Be sure to use the diagnosis sheet for the correct CAN system type.
Print Diagnosis Sheet
Print the diagnosis sheet for the applicable CAN system type.
Check of Received Data
Check the created data sheet for missing information.

For abbreviations, refer to LAN-41, "Abbreviation List" .
SKIB8891E