indigo as (wwh-)obd scan tool · u jobd and obd ii u jobd and eobd u jobd, eobd, and obd ii u obd,...

V1.3 | 2018-10-30

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Indigo as (WWH-)OBD Scan Tool

2 © 2018. Vector Informatik GmbH. All rights reserved. Any distribution or copying is subject to prior written approval by Vector. V1.3 | 2018-10-30

u OBD Introduction

Diagnostic Protocol

Discover OBD ECUs

Read Diagnostic and Vehicle Data

Fault Memory

Request On-Board Monitoring Test Results

Generic OBD Service Access

OBD Automation API

Further Readings

Agenda


u California Environmental Protection Agency (CARB)

u California has the right to set its own legislation concerning OBD

u Today the OBD requirements defined by the CARB are not only valid for the state California but for the overall US

u CARB always leads the debate in the US, the other states follow

u European Union (EU)

u EU has defined its own set of OBD requirements which are based on the CARB OBD II requirements but are not identical

u This version of OBD II is called EOBD (European OBD)

History of OBD

OBD Introduction


u Different OBD requirements (PID $1C)u OBD II (California ARB)

u OBD (Federal EPA)

u OBD and OBD II

u OBD I

u EOBD

u EOBD and OBD II

u EOBD and OBD

u EOBD, OBD and OBD II

u JOBD

u JOBD and OBD II

u JOBD and EOBD

u JOBD, EOBD, and OBD II

u OBD, EOBD and KOBD

u OBD, OBD II, EOBD and KOBD

u Engine Manufacturer Diagnostics (EMD)

u Engine Manufacturer Diagnostics Enhanced (EMD+)

u Heavy Duty On-Board Diagnostics (Child/Partial)

u Heavy Duty On-Board Diagnostics

u World Wide Harmonized OBD

u Heavy Duty Euro OBD Stage I without NOx Control

u Heavy Duty Euro OBD Stage I with NOx Control

u Heavy Duty Euro OBD Stage II without NOx Control

u Heavy Duty Euro OBD Stage II with NOx Control

u Brazil OBD Phase 1

u Brazil OBD Phase 2 and Phase 2+

u Korean OBD

u India OBD I

u India OBD II

u Euro VI

u OBD, OBD II and HD OBD

u Brazil OBD Phase 3

History of OBD

OBD Introduction


u United Nations (UN)

u UN try to consolidate the different OBD standards and issued a legislative document to replace the local legislative documents

u WWH OBD (World Wide Harmonized OBD)

OBD Introduction

History of OBD


OBD Introduction

u Diagnostic Protocol

Discover OBD ECUs


Fault Memory



OBD Automation API

Further Readings

Agenda


OBD II

Diagnostic Protocol

SAE J1979ISO 15031-5Modes 01-0A

OBD II/EOBD

Services

Data

DTCSAE J2012-DA

PID/MID/TIDSAE J1979-DA

references

DA: Digital Annex (Excel)


WWH-OBD

Diagnostic Protocol

u The “Digital Annexes” of SAE J2012 and SAE J1979 are referenced in WWH-OBD

27145-2

Data

DTCSAE J2012-DA (+J1939 Format)

PID/MID/TID/InfoTypesSAE J1979-DA

references

DA: Digital Annex (Excel)

Services

ISO 27145-3UDS Services


OBD Introduction

Diagnostic Protocol

u Discover OBD ECUs


Fault Memory



OBD Automation API

Further Readings

Agenda


Discovery Message and CAN IDs

Discover OBD ECUs

u Only OBD ECUs send positive responses

1022F

F8

7DFF

P7E0 7E7...

P7E8 7EF...

11 Bit CAN-IDs

18 DB 33 F1F

P ...

P ...

29 Bit CAN-IDs

OBD II

01F

00

18 DA 00 F1

18 DA F1 00

18 DA FF F1

18 DA F1 FF

WWH-OBD


Discovery Message and CAN IDs

Discover OBD ECUs

Indigo

u Simply start connection to run OBD discovery


OBD Introduction

Diagnostic Protocol

Discover OBD ECUs

u Read Diagnostic and Vehicle Data

Fault Memory



OBD Automation API

Further Readings

Agenda


Read Current Diagnostic Data


PID22

+

62 F4

+

PID Data

F4

PID

( )

( )

WWH-OBDP

P

OBD II

PID01

+

41 PID

+

F

PPID Data

( )

( )




u Which data can be read?

u Parameter Ids (PIDs) are defined in SAE J1979 DA




u System State and Vehicle Readiness: PID $01

u Byte A: System State (DTCs and MIL)

u Byte B: Support and Status of Monitors

u Byte C: Supported Tests (run at least once per trip)

u Byte D: Status of Tests (run at least once per trip)


Indigo: OBD Vehicle Status





u Which data can be read?

u Secondary Air Status

u Air Flow Rate

u Intake Air Temperature

u Absolute Throttle Position

u O2 Sensors for each block and each bank

u OBD Type (OBD II, EOBD, …)

u …


Indigo: OBD Sensor Data



Request Vehicle Information


OBD II

IT22

+

62 F8

F8

IT

( )

(

WWH-OBD

P

P

49

IT09

+

+

IT

F

PInfo Type Data

( )

( )

+

Info Type Data)


Request Vehicle Information


Examples

IT Meaning

02 VIN

04 Calibration ID

06 Calibration Verification Number

… …


Indigo: OBD Vehicle Info



Indigo: In-Use Performance Tracking



OBD Introduction

Diagnostic Protocol

Discover OBD ECUs


u Fault Memory



OBD Automation API

Further Readings

Agenda


Read Pending DTCs

Fault Memory

19 42

59 42

FGID

FGID FI*

19 42

59 42

FGID

FGID SeAM FID

SeM04

Sev

WWH-OBD

( )StatusRoot DTC FTBSAM

OBD II

P

P

47No of DTCs

07+

F

P

D TC( )

Value Description

FGID Functional Group ID (0x33)

SM Status Mask

SeM Severity Mask

SAM Status Availability Mask

SeAM Severity Availability Mask

FID Format Identifier

Sev Severity


DTC Structure

Fault Memory

Value Description

00 Powertrain (P)

01 Chassis (C)

10 Body (B)

11 Network (U)

Value Description

00 ISO/SAE controlled

01 Manufacturer controlled



Area of vehicle system

3rd character of code

4th character of code

7 06 5 4 13 2 7 06 5 4 13 2

Value Description

P00-P02 Fuel and air metering

P03 Ignition system or misfire

P04 Auxiliary emission controls

P05 Vehicle speed, idle control, and auxiliary inputs

P06 Computer and auxiliary outputs

P07-P09 Transmission

P0A-P0E Hybrid Propulsion

Fault location AND type

Example: P0070 (0x0070) Ambient Air Temperature Sensor Circuit "A"


Read Confirmed DTCs

Fault Memory

19 42

59 42

FGID

FGID FI*

19 42

59 42

FGID

FGID SeAM FID

SeM08

Sev

WWH-OBD

( )StatusRoot DTC FTBSAM

OBD II

P

P

43No of DTCs

03+

F

P

D TC( )

Value Description

FGID Functional Group ID (0x33)

SM Status Mask

SeM Severity Mask

SAM Status Availability Mask

SeAM Severity Availability Mask

FID Format Identifier

Sev Severity


Read Freeze Frame Data / Snapshot Data Records

Fault Memory

42 PID

02

F

1..3

PID

1..3

F

P

F

PID Data

( )( )

19 04

00*

NOID )

NO

ID

0459 Status D ID S D

000..1

( )( ( )

Root DTC FTB

Root DTC FTB

P

P

WWH-OBD

OBD II


WWH-OBD: 0x19 06 Read Extended Data Record

Fault Memory

u Extended Data Records contain statistical data of DTCs

u Example: Occurrence counter or B1 counter

19 06 90

59 06 90

0..1

Status ( )FS B1C

Root DTC FTB

Root DTC FTB

P

P


Clear/Reset Emission Related Diagnostic Data

Fault Memory

OBD II

04

44

F

P

14

54

FF FF 33

WWH-OBDP/F

P


Clear Diagnostic Data

Fault Memory

Data Mode PID

Number of DTCs 01 01

Freeze Frames 02

Confirmed DTCs 03

Pending DTCs 07

Oxygen Sensor Monitoring Test Results 05

On-Board Monitoring Test Results for Specific Monitored Systems 06

I/M Readiness Data 01 01

Distance Traveled While MIL is Activated 01 21

Number of warm-ups since DTCs cleared 01 30

Distance traveled since DTCs cleared 01 31

Monitor status this driving cycle 01 41

Engine run time while MIL activated 01 4D

Engine run time since DTCs cleared 01 4E

EWMA (Exponential Weighted Moving Average) misfire counts 06 0B


Indigo: OBD DTC Browser

Fault Memory

u Read OBD DTCs

u Confirmed

u Pending

u Permanent

u Read Freeze Frames &Extended Data Records

u Clear Diagnostic Data

u Reports


OBD Introduction

Diagnostic Protocol

Discover OBD ECUs


Fault Memory

u Request On-Board Monitoring Test Results


OBD Automation API

Further Readings

Agenda


Introduction to O2 sensors


u Stoichiometric combustion

u 1kg GAS (95 ROZ) requires 14,7kg air (14,7 : 1 = Lambda 1)

Source: https://en.wikipedia.org/wiki/File:Ideal-stoichiometry.jpg


Introduction to OBD Mode $06


u Allow access to results for on-board diagnostic monitoring tests of specific components (continuous / non-continuous monitored)

u Latest valid test values (results) are retained over multiple ignition OFF cycles

u Test values (results) are requested by OBD Monitor ID

u Always reported with minimum and maximum test limits

u Many OBD monitors have multiple tests

u PID $41: Monitor status this driving cycle


Protocol


Abb. Description

MID Monitor ID

TID Test ID

US Unit Scaling

TV Test Value

MinTL Min. Test Limit

MaxTL Max. Test Limit

MID22

+

62 F6

F6

MID TID MaxTLTVUS

+

MinTL

( )

( )

P

P

WWH-OBD

MID06

+

46 MID TID MaxTLTVUS+

MinTL

F

P

( )

( )


Indigo: OBD Monitoring Test Results


u OBD Monitoring Test Results Window


OBD Introduction

Diagnostic Protocol

Discover OBD ECUs


Fault Memory


u Generic OBD Service Access

OBD Automation API

Further Readings

Agenda


Indigo: OBD Diagnostic Console


u OBD Diagnostic Console allows sending all OBD request to

u An OBD Functional Group (all OBD ECUs)

u A selected OBD ECU

u Filter by supported data

u Search OBD Service Data

u Read data cyclically


OBD Introduction

Diagnostic Protocol

Discover OBD ECUs


Fault Memory



u OBD Automation API

Further Readings

Agenda


u Vector.Diagnostics.OBD

u Based on Microsoft .NET

u Additional library to Vector Diagnostics Scripting Library

u Read out OBD information with just a view lines of C# code

u Use Cases

u Implement your own OBD logger

u Implement your own OBD report in your own format / output

u Access OBD PIDs/MIDs/TIDs as well as OBD DTCs and Freeze Frames conveniently

u Runtime environment

u Indigo

u vScriptDiagnostics on VN8810

Introduction

OBD Automation API


Examples: Reading out IUMPR

OBD Automation API

// run OBD discovery and detect OBD ECUs

var result = ObdDiscovery.Discover();

// decide whether working with the OBD functional

// group or OBD ECUs via physical communication

var functionalGroup = result.ObdFunctionalGroup;

// read out InfoType $08 - In-Use Performance Tracking

var performanceTracking =

functionalGroup.ReadObdInfoType(ObdInfoTypeCategory.InfoType_08_InUsePerformanceTracking);

// Iterate through the response data and output content

foreach (var obdInfoType in performanceTracking)

{

Output.WriteLine("ECU: " + obdInfoType.Ecu);

foreach (var data in obdInfoType.Data)

{

Output.WriteLine(string.Format("{0} : Value {1}", data.Name, data.Value));

}

}


Examples: Reading out IUMPR

OBD Automation API


Examples: Reading out OnBoard Monitoring Tests

OBD Automation API

var discovery = ObdDiscovery.Discover();

var functionalGroup = discovery.ObdFunctionalGroup;

foreach (ObdMonitoringTestResultCategory obdMonitorId inEnum.GetValues(typeof(ObdMonitoringTestResultCategory)))

{

Output.WriteLine("Monitor: " + obdMonitorId);

//Read out all Monitoring Test Results

var monitoringTestResultsData = functionalGroup.ReadObdMonitoringTestResult(obdMonitorId);

foreach (var dataCollection in monitoringTestResultsData)

{

foreach (var testResult in dataCollection.ObdMonitoringTestResults)

{

Output.WriteLine(string.Format("Test {0}: Minimum : {1} | Maximum: {2} | Value: {3}", testResult.Name, testResult.MinimumValue, testResult.MaximumValue, testResult.TestValue));

}

}

}


Examples: Reading out OnBoard Monitoring Tests

OBD Automation API


OBD Introduction

Diagnostic Protocol

Discover OBD ECUs


Fault Memory



OBD Automation API

u Further Readings

Agenda


“WWH-OBD – made simple! Implementation of the new WWH-OBD Requirements for OEMs and Suppliers”

Author: Helmut Frank

https://assets.vector.com/cms/content/know-how/_technical-articles/diagnostics/WWH_OBD_AEL_201208_PressArticle_EN.pdf

Press Articles

Further Readings

https://assets.vector.com/cms/content/know-how/_technical-articles/diagnostics/WWH_OBD_AEL_201208_PressArticle_EN.pdf


Vector solutions for OBD

u Embedded Software

u Diagnostic Testers

u Validation

u Hardware

u Engineering and Consulting

http://www.obd-solution.com

Vector OBD Solution

Further Readings

http://www.obd-solution.com/


Author:Abramowitsch, RalfVector Germany

For more information about Vectorand our products please visit

www.vector.com

http://www.vector.com/

indigo as (wwh-)obd scan tool · u jobd and obd ii u jobd and eobd u jobd, eobd, and obd ii u obd,...

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