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AUR30405
CERTIFICATE III IN AUTOMOTIVE MECHANICAL TECHNOLOGY




AURT366108A

Carry out diagnostic procedures

LEARNER WORKBOOK

© Commonwealth of Australia 2011



ISBN: 978-1-876838-24-9

This document is available under a “Free for Education” licence for educational purposes – see http://www.aesharenet.com.au/FfE2 for details.

This work is copyright. You may download, display, print and reproduce this material in whole or in part or in modified form (retaining this notice) for your personal, non-commercial use or use within your organisation. If you use, display, or reproduce this material or a modified form of it in whole or in part within your organisation you must include the following words in a prominent location within the material in font not less than size 12: ‘The views expressed in this publication do not necessarily represent the view of the Minister for Education or the Australian Government. The Australian Government does not give any warranty nor accept any liability in relation to the contents of this work’. Apart from any use as permitted under the Copyright Act 1968, all other rights are reserved. Requests and inquiries concerning reproduction and rights should be addressed to the Commonwealth Copyright Administration, Attorney General’s Department, Robert Garran Offices, National Circuit, Barton ACT 2600 or posted at http://www.ag.gov.au/cca.

Funded under the Workplace English Language and Literacy (WELL) Program by the Australian Government Department of Education, Employment and Workplace Relations.

The views expressed in this publication do not necessarily represent the view of the Minister for Education or the Australian Government. The Australian Government does not give any warranty nor accept any liability in relation to the contents of this work.


AURT366108A Carry out diagnostic procedures 1

Elements: 1

About the workbook 1

Assessment 3

Skills Recognition 4

Access and equity 4



Introduction 5

What is ‘diagnosis’? 5

What is ‘normal’ and ‘abnormal’? 6

What is a diagnostic procedure? 6

Safety 7

Tasks and hazards 9

Activity 1 11

Carrying out automotive diagnosis 14

The importance of diagnosis 14

Symptoms, faults and causes 17

Activity 2 23

The steps in a diagnostic procedure 29

Gathering information for diagnosis 31

Types of diagnostic procedures 32

Activity 3 35



Six-step diagnostic procedure 38

Apply six-step diagnosis to a real problem 42

Activity 4 50

Activity 5 56



Reporting and documenting diagnosis and repairs 58

Why do we need to document the diagnostic process? 58

Activity 6 64

Writing a diagnostic report 69

Parts of a Report 70

Activity 7 73



Other diagnostic approaches 75

Branching diagnostic procedures 75

Activity 8 77

‘Black Box’ Diagnosis 79

On-Board Diagnostics 81

Reading codes and information with a scan tool 84

Proprietary and generic scan tools 86

What information is available from an OBD system? 87

Activity 9 93

Activity 10 99



Glossary 102


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