Nissan Frontier D40. Manual - part 806

 

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Nissan Frontier D40. Manual - part 806

 

 

LAN

TROUBLE DIAGNOSIS

LAN-11

< FUNCTION DIAGNOSIS >

[CAN FUNDAMENTAL]

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Self-Diagnosis

INFOID:0000000005530344

CAN Diagnostic Support Monitor

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CONSULT-III and CAN diagnostic support monitor (on-board diagnosis function) are used for detecting root
cause.

MONITOR ITEM (CONSULT-III)

Example: CAN DIAG SUPPORT MNTR indication

Without PAST

DTC

Self-diagnosis item

 (CONSULT-III indication)

DTC detection condition

Inspection/Action

U0101

LOST COMM (TCM)

When ECM is not transmitting or receiving CAN commu-
nication signal of OBD (emission-related diagnosis) from 
TCM for 2 seconds or more.

Start the inspection. Refer 
to the applicable section 
of the indicated control 
unit.

U0140

LOST COMM (BCM)

When ECM is not transmitting or receiving CAN commu-
nication signal of OBD (emission-related diagnosis) from 
BCM for 2 seconds or more.

U0164

LOST COMM (HVAC)

When ECM is not transmitting or receiving CAN commu-
nication signal of OBD (emission-related diagnosis) from 
A/C auto amp. or unified meter and A/C amp. for 2 sec-
onds or more.

U1000

CAN COMM CIRCUIT

ECM

When ECM is not transmitting or receiving 
CAN communication signal of OBD (emission-
related diagnosis) for 2 seconds or more.

Except 
for ECM

When a control unit (except for ECM) is not 
transmitting or receiving CAN communication 
signal for 2 seconds or more.

U1001

CAN COMM CIRCUIT

When ECM is not transmitting or receiving CAN commu-
nication signal other than OBD (emission-related diagno-
sis) for 2 seconds or more.

U1002

SYSTEM COMM

When a control unit is not transmitting or receiving CAN 
communication signal for 2 seconds or less.

U1010

CONTROL UNIT(CAN)

When an error is detected during the initial diagnosis for 
CAN controller of each control unit.

Replace the control unit 
indicating “U1010” or 
“P0607”.

P0607

ECM

PKID1075E

LAN-12

< FUNCTION DIAGNOSIS >

[CAN FUNDAMENTAL]

TROUBLE DIAGNOSIS

With PAST

MONITOR ITEM (ON-BOARD DIAGNOSIS)

NOTE:
For some models, CAN communication diagnosis result is received from the vehicle monitor. (CONSULT-III is
not available.)

Example: Vehicle Display 

Item

PRSNT

Description

Initial diagnosis

OK

Normal at present

NG

Control unit error (Except for some control units)

Transmission diagnosis

OK

Normal at present

UNKWN

Unable to transmit signals for 2 seconds or more.

Diagnosis not performed

Control unit name

(Reception diagnosis)

OK

Normal at present

UNKWN

Unable to receive signals for 2 seconds or more.

Diagnosis not performed

No control unit for receiving signals. (No applicable optional parts)

Item

PRSNT

PAST

Description

Transmission diagnosis

OK

OK

Normal at present and in the past

1 – 39

Normal at present, but unable to transmit signals for 2 seconds or more 
in the past. (The number indicates the number of ignition switch cycles 
from OFF to ON.)

UNKWN

0

Unable to transmit signals for 2 seconds or more at present.

Control unit name

(Reception diagnosis)

OK

OK

Normal at present and in the past

1 – 39

Normal at present, but unable to receive signals for 2 seconds or more 
in the past. (The number indicates the number of ignition switch cycles 
from OFF to ON.)

UNKWN

0

Unable to receive signals for 2 seconds or more at present.

Diagnosis not performed.

No control unit for receiving signals. (No applicable optional parts)

Item

Result indi-

cated

Error counter

Description

CAN_COMM

(Initial diagnosis)

OK

0

Normal at present

NG

1 – 50

Control unit error
(The number indicates how many times diagnosis has been 
run.)

CAN_CIRC_1

(Transmission diagnosis)

OK

0

Normal at present

UNKWN

1 – 50

Unable to transmit for 2 seconds or more at present.
(The number indicates how many times diagnosis has been 
run.)

CAN_CIRC_2 – 9

(Reception diagnosis of each unit)

OK

0

Normal at present

UNKWN

1 – 50

Unable to transmit for 2 seconds or more at present.
(The number indicates how many times diagnosis has been 
run.)

Diagnosis not performed.

No control unit for receiving signals. (No applicable optional 
parts)

LAN

DIAGNOSIS AND REPAIR WORKFLOW

LAN-13

< BASIC INSPECTION >

[CAN FUNDAMENTAL]

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Information Needed for Trouble Diagnosis

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CAN communication system performs trouble diagnosis with the following tools.

How to Use CAN Communication Signal Chart

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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 copying on-board diagnosis data.

Diagnosis sheet

For detecting the root cause. (Diagnosis sheet includes system diagram for every CAN system type)

ECU list
(On the “CAN DIAG SUPPORT 
MNTR”)

For checking the condition of control units and the status of CAN communication.

SELF-DIAG RESULTS
(CONSULT-III)

CAN DIAG SUPPORT MNTR
(CONSULT-III)

CAN communication signal 
chart

For 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

LAN-14

< BASIC INSPECTION >

[CAN FUNDAMENTAL]

DIAGNOSIS AND REPAIR WORKFLOW

Trouble Diagnosis Flow Chart

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Trouble Diagnosis Procedure

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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

PKID1210E

 

 

 

 

 

 

 

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