31S15T0 advanced engine perfomance 2006

FCS-14570-REF

Updated January, 2006



IMPORTANT SAFETY NOTICE
Appropriate service methods and proper repair procedures are essential for the safe, reliable operation of all motor vehicles,
as well as the personal safety of the individual doing the work. This manual provides general directions for accomplishing
service and repair work with tested, effective techniques. Following them will help assure reliability.
There are numerous variations in procedures, techniques, tools and parts for servicing vehicles, as well as in the skill of the
individual doing the work. This manual cannot possibly anticipate all such variations and provide advice or cautions as to each.
Accordingly, anyone who departs from instructions provided in this manual must first establish that he compromises neither his
personal safety nor the vehicle integrity by his choice of methods, tools or parts.
As you read through the procedures, you will come across NOTES, CAUTIONS, and WARNINGS. Each one is there for a
specific purpose. NOTES give you added information that will help you to complete a particular procedure. CAUTIONS are
given to prevent you from making an error that could damage the vehicle. WARNINGS remind you to be especially careful in
those areas where carelessness can cause personal injury. The following list contains some general WARNINGS that you
should follow when you work on a vehicle.

•
•
•
•

•
•
•

Always wear safety glasses for eye protection.
Use safety stands whenever a procedure requires you to

be under the vehicle.
Be sure that the ignition switch is always in the OFF
position, unless otherwise required by the procedure.
Set the parking brake when working on the vehicle. If you
have an automatic transmission, set it in PARK unless
instructed otherwise for a specific service operation. If you
have a manual transmission it should be in REVERSE
(engine OFF) or NEUTRAL (engine ON) unless instructed
otherwise for a specific service operation.
Operate the engine only in a well-ventilated area to avoid
the danger of carbon monoxide.
Keep yourself and your clothing away from moving parts
when the engine is running, especially the fan and belts.
To prevent serious burns, avoid contact with hot metal

•
•
•

•

To prevent serious burns, avoid contact with hot metal
parts such as the radiator, exhaust manifold, tail pipe,
catalytic converter and muffler.
Do not smoke while working on the vehicle.
To avoid injury, always remove rings, watches, loose
hanging jewelry, and loose clothing before beginning to
work on a vehicle. Tie long hair securely behind your
head.
Keep hands and other objects clear of the radiator fan

blades. Electric cooling fans can start to operate at any
time by an increase in underhood temperatures, even
though the ignition is in the OFF position. Therefore,
care should be taken to ensure that the electric cooling
fan is completely disconnected when working under the
hood.

The recommendations and suggestions contained in this manual are made to assist the dealer in improving his dealership parts
and/or service department operations. These recommendations and suggestions do not supersede or override the provisions of the
Warranty and Policy Manual, and in any cases where there may be a conflict, the provisions of the Warranty and Policy Manual shall
govern.
The descriptions, testing procedures, and specifications in this handbook were in effect at the time the handbook was
approved for printing. Ford Motor Company reserves the right to discontinue models at any time, or change specifications,
design, or testing procedures without notice and without incurring obligation. Any reference to brand names in this manual is
intended merely as an example of the types of tools, lubricants, materials, etc. recommended for use. Equivalents, if available,
may be used. The right is reserved to make changes at any time without notice.
WARNING: MANY BRAKE LININGS CONTAIN ASBESTOS FIBERS. WHEN WORKING ON BRAKE COMPONENTS, AVOID
BREATHING THE DUST. BREATHING THE ASBESTOS DUST CAN CAUSE ASBESTOSIS AND CANCER.
Breathing asbestos dust is harmful to your health.
Dust and dirt present on car wheel brake and clutch assemblies may contain asbestos fibers that are hazardous to your health when
made airborne by cleaning with compressed air or by dry brushing.
Wheel brake assemblies and clutch facings should be cleaned using a vacuum cleaner recommended for use with asbestos fibers.
Dust and dirt should be disposed of in a manner that prevents dust exposure, such as sealed bags. The bag must be labeled per
OSHA instructions and the trash hauler notified as to the contents of the bag.
If a vacuum bag suitable for asbestos is not available, cleaning should be done wet. If dust generation is still possible, technicians
should wear government approved toxic dust purifying respirators.
OSHA requires areas where asbestos dust generation is possible to be isolated and posted with warning signs. Only technicians
concerned with performing brake or clutch service should be present in the area.
Copyright © 2006 Ford Motor Company

Produced and Coordinated by
Technical Support Operations
Ford Customer Service Division
March, 2006


CUSTOMER EXPECTATIONS
Customer Expectations: Service

1. Make it convenient to have my vehicle
serviced at your dealership.

2. The Service Advisor should

demonstrate a genuine concern for my
service needs.

3. Fix it right the first time.
4. Complete servicing my vehicle in a

5. Provide me with a clear and thorough
explanation of the service performed.

6. Call me within a reasonable amount of

time after my service visit to ensure that
I'm completely satisfied.

7. Be responsive to questions or concerns
I bring to your attention.

timely and professional manner.

Expectation 3
“Fix It Right The First Time, on Time.”
Both service advisors and technicians are important players when it comes to Expectation #3.
Why
Customers tell us “Fixing It Right The First Time, on Time” is one of the reasons they
would decide to return to a dealer to buy a vehicle and get their vehicles serviced.
Technician Training
It is our goal to help the technician acquire all of the skills and knowledge necessary to
“Fix It Right The First Time, on Time.” We refer to this as “competency.”
Technician’s Role
Acquire the skills and knowledge for competency in your specialty via:
STST
– Self Study
– FordStar Broadcasts
– Ford Multimedia Training (FMT)
– Instructor Led

New Model
– Self Study
– FordStar Broadcasts
– Instructor Led

The Benefits
The successful implementation of expectations means:
– Satisfied customers
– Repeat vehicle sales
– Repeat service sales

– Recognition that Ford and Lincoln/Mercury technicians are “the Best in the Business”


TABLE OF CONTENTS
INTRODUCTION

Engine Performance Curriculum Goals .......................................................................................................... Intro 1
Planned Training Pathway .............................................................................................................................. Intro 1
Engine Performance Curriculum Overview .................................................................................................... Intro 1
How to Complete the Curriculum.................................................................................................................... Intro 2
Course Description .......................................................................................................................................... Intro 3
Course Length ................................................................................................................................................. Intro 3
Target Audience .............................................................................................................................................. Intro 3
Course Prerequisites ........................................................................................................................................ Intro 3
Course Structure .............................................................................................................................................. Intro 3
Course Objectives ........................................................................................................................................... Intro 4
PC-Assisted Activities .................................................................................................................................... Intro 5
Evaluation Strategy ......................................................................................................................................... Intro 5
Day One Flowchart ......................................................................................................................................... Intro 6
Day Two Flowchart ....................................................................................................................................... Intro 8
Day Three Flowchart ................................................................................................................................... Intro 10
Day Four Flowchart ..................................................................................................................................... Intro 12

MECHANICAL CONCERNS

Student Objective ..................................................................................................................................................
Transmission Concerns .........................................................................................................................................
Base Engine Concerns ..........................................................................................................................................
Air Conditioning ...................................................................................................................................................

1-1
1-2
1-2
1-2

MODE 6 DATA

Student Objective .................................................................................................................................................. 2-1
Mode 6 Data .......................................................................................................................................................... 2-2

ALTERNATIVE FUEL DIAGNOSIS, ESM EGR, ELECTRONIC THROTTLE CONTROL

Student Objective .................................................................................................................................................. 3-1
Service Area Precautions ...................................................................................................................................... 3-3
Diagnosing Engine Performance Concerns on Alt. Fuel Vehicles ....................................................................... 3-5
Alternative Fuel Systems ...................................................................................................................................... 3-7
ESM EGR / Electronic Throttle Control ............................................................................................................. 3a-1
ESM EGR Overview............................................................................................................................................ 3a-2
Electronic Throttle Control Overview ................................................................................................................. 3a-3

DAY ONE WORKSHEETS

Worksheet 1 – Hands-on (Rough Idle) ...........................................................................................................
Worksheet 2 – WDS Recorded Session ..........................................................................................................
Worksheet 3 – Hands-on (Hesitation) .............................................................................................................
Worksheet 4 – WDS Recorded Session ..........................................................................................................

WS1-2
WS1-5
WS1-6

WS1-8

DTC-DRIVEN DIAGNOSIS

Student Objectives ................................................................................................................................................. 4-1
Introduction............................................................................................................................................................ 4-2

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TOC-1


TABLE OF CONTENTS
SYMPTOM-DRIVEN DIAGNOSIS

Student Objectives ................................................................................................................................................ 5-1
System Relationships ............................................................................................................................................ 5-3

DAY TWO WORKSHEETS

Worksheet 1 – Hands-on (Engine Miss) ........................................................................................................ WS2-2
Worksheet 2A – PC-Assist (Crank/No Start) .................................................................................................. WS2-4
Worksheet 2B – PC-Assist (Rough Running Engine) .................................................................................... WS2-6
Worksheet 3 – Hands-on (No Start)................................................................................................................. WS2-8
Worksheet 4 – PC-Assist (Crank/No Start) ................................................................................................... WS2-10

INTERMITTENT DIAGNOSIS

Student Objectives ................................................................................................................................................ 6-1
PID Selection ........................................................................................................................................................ 6-7

DAY THREE WORKSHEETS

Worksheet 1 – Hands-on (Intermittent Buck/Jerk) .........................................................................................
Worksheet 2 – PC-Assist (Intermittent Rough Idle) ......................................................................................
Worksheet 3 – Hands-on (Intermittent Rough Idle) .......................................................................................
Worksheet 4A – WDS Recorded Session (Data Analysis)..............................................................................
Worksheet 4B – WDS Recorded Session (Data Analysis) ..............................................................................

TOC-2

January,2006

WS3-2
WS3-4
WS3-6
WS3-8
WS3-9

Advanced Engine Performance


INTRODUCTION
Planned Training Pathway
Ford Motor Company has identified the skills and knowledge necessary to meet the Engine Performance
Curriculum goals. The Planned Training Pathway is a sequence of courses that are designed to provide students
with these skills and knowledge.

Engine Performance Curriculum Overview
The Engine Performance Curriculum consists of all of the following types of courses:
Web-based – These courses are self-paced. The technician is responsible for learning the material on his/her own
time. The courses are posted on the Internet and technicians are given the appropriate access codes.
Classroom – The classroom courses allow for application of the skills and knowledge learned in the prerequisite
courses through hands-on, real-world scenarios.

Advanced Engine Performance

January,2006

Intro 1


INTRODUCTION
How to Complete the Curriculum
To successfully complete the Engine Performance Curriculum, the student must take the following sequence of
courses:

Ignition Theory and Operation –
Course Code 31S01W0
Fuel and Air Theory and Operation –
Course Code 31S02W0
Exhaust/Emission Theory and Operation –
Course Code 31S03W0
Fuel, Air, Ignition and Emission Relationships –
Course Code 31S04W0
OBD II Monitors –
Course Code 31S05W0
Engine Performance Theory and Operation –

Course Code 31S07T0
Driveability Diagnostic Process –
Course Code 31S06W0
Driveability Diagnostic Routines –
Course Code 31S08W0
Engine Performance Diagnosis and Testing –
Course Code 31S10T0
Diagnosis and Testing of OBD II Vehicles –
Course Code 31S09M0
31S12W0
Advanced Engine Performance –
Diagnosis and Testing – Course Code 31S15T0

Intro 2

January,2006

Advanced Engine Performance


INTRODUCTION
Course Description
This course is designed to provide the technician with hands-on application of advanced diagnosis and testing
skills related to driveability concerns. The course specifically addresses critical thinking skills needed for the
application of the advanced engine performance diagnosis and testing concepts. Although the technicians work
together in groups, each technician is responsible for completing their own worksheets. The course includes
instructor lecture, instructor-led group discussion, student activities, and student hands-on workstations.

Course Length
This is a four-day, hands-on classroom course.

Course Structure
The Advanced Engine Performance Diagnosis and Testing classroom course includes the following:
•

Instructor-led Discussion – The students are asked to complete review questions that address content
previously covered in the curriculum. Instructor-led group discussions focus on critical thinking skills and
specific concepts that are critical to advanced diagnosis and testing.

•

Instructor Lecture – The instructor presents information related to advanced diagnosis and testing.

•

Student Activities – The student activities are designed to reinforce concepts presented during the instructor
lecture.

•

Workstations – The instructor presents the concepts that are critical to successfully completing the
workstations. Technicians participate in six on-vehicle exercises, interpret data from four WDS recordings,
and four PC-assisted activities during the workstation portion of the course.

•

Worksheets – All activities and workstations have an accompanying worksheet designed to complement the
hands-on activities and are identified by number and by name.

•

Evaluation – At the end of the four-day course, the instructor asks the technicians to complete a final written
test, a final hands-on workstation, an interpretation of a WDS recording, and a course evaluation.

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Intro 3


INTRODUCTION
Course Objectives
Upon completion of the Advanced Engine Performance Diagnosis and Testing classroom course, the technician
will be able to:
1. Use critical thinking skills to evaluate and diagnose DTC-driven, symptom-driven, and intermittent
concerns.
a. Use critical thinking skills to evaluate and diagnose DTC-driven concerns
i. Discuss the critical thinking that must take place when following pinpoint tests to
diagnose faulty circuits or components.
ii. Discuss causes that could set a component or condition generated DTC.
iii. Discuss how to address multiple DTCs.
b. Use critical thinking skills to evaluate and diagnose symptom-driven concerns.
i. Discuss grouping symptoms/concerns.
ii. Discuss viewing PIDs to determine condition.
iii. Discuss comparing values with diagnostic reference values from PC/ED.
iv. Discuss checking possible causes of abnormal values
c. Use critical thinking skills to evaluate and diagnose intermittent concerns.
i. Explain how to use pinpoint test Z, including:
• PID selection

• Reference values
• Recreating the symptom
• Capturing and interpreting data
2. Identify if a concern is fuel related when diagnosing alternative fuel vehicles.
a. Discuss service area precautions.
b. Discuss how to diagnose engine performance concerns on alternative fuel vehicles.
c. Discuss Bi-fuel Liquefied Petroleum Gas (LPG), Bi-fuel Compressed Natural Gas (CNG), and
Dedicated CNG operation.
d. Discuss changes to base vehicle operation strategies.
3. Perform simulated hands on diagnosis to resolve intermittent, DTC-driven, and symptom-driven
concerns.
a. Perform simulated hands-on diagnosis of the following concerns:
i. Villager - Crank / No Start
ii. Villager - Rough Running Engine
iii. Ranger - Crank / No Start
iv. Town Car – Intermittent Rough Idle
4. Perform hands-on diagnosis to resolve intermittent, symptom-driven, and DTC-driven concerns.
a. Perform hands on diagnosis of the following concerns:
i. Rough Idle
ii. Hesitation
iii. No start
iv. Engine Miss
v. Intermittent Buck / Jerk
vi. Intermittent Rough Idle

Intro 4

January,2006

Advanced Engine Performance

INTRODUCTION
Student Reference Book
The Student Reference Book includes all student information. The book contains sample PC/ED pages, as well
as, applicable graphics that the students can use to follow along as the instructor discusses information that is
critical to understanding advanced diagnosis and testing of engine performance concerns. The Student Reference
Book includes:
•

Introduction - This contains general information for the Advanced Engine Performance Diagnosis and
Testing classroom course.

•

Engine Performance Information – This includes specific lessons that address the critical thinking that should
take place when performing diagnosis and testing of driveability concerns.

•

Activity/Workstation Information - This includes information and worksheets that are used during the student
activities and hands-on portion of the course.

PC-Assisted Activities
The PC-assisted activities are workstation activities delivered via CD. They do not include the use of video and
audio elements. These are simulated hands-on practice in advanced diagnosis and testing of driveability concerns.
The PC-assisted activities include DTC-driven, symptom-driven, and intermittent routines that address advanced
driveability concerns and allow the technicians the opportunity to apply their knowledge of advanced diagnosis
and testing.

Evaluation Strategy
Student evaluation is based on the score of a final written test, interpretation of a WDS recording, and a hands-on
workstation. These are completed on the afternoon of the last day. A non-passing grade in either of these three
evaluation areas constitutes a failing grade for the course. There are no make-up tests or "do-overs" available.
Any technician that fails this course must sign up to take the course for a second time, or take the entire
curriculum, whichever is applicable for their situation.
Final Written Test
Technicians complete the final written test at their seats, with occasional monitoring to ensure that they are not
sharing answers. The written test consists of 30 multiple-choice questions. The questions focus on diagnostic
concerns and processes identified during the classroom session and require the technician to use critical thinking
skills. Each student must correctly answer 80% of these questions (24 of 30 questions) to pass.
Final WDS Recording Interpretation
Technicians complete the final WDS recording interpretation at a PC, with occasional monitoring to ensure that
they are not sharing answers. The written responses to the recording consist of answering 10 questions. The
questions focus on interpreting data identified during the classroom session and require the technician to use
critical thinking skills. Each student must correctly answer 80% of these questions (8 of 10 questions) to pass.
Final Hands-on Workstation
The technician must accurately diagnose the final hands-on workstation. The hands-on activity is done without
instructor assistance. The technicians may use all of the reference material available to them in the classroom,
including workshop manuals, and the student reference book.

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Intro 5


INTRODUCTION
Day One Flowchart

Instructor-Led Discussion
Instructor
Introduction

Review
Questions

• Review Theory and
Operation
• Review Diagnosis and
Testing

Instructor-Led Discussion
Lunch

Introduce
Workstations

End of
Day 1

Intro 6

• Mechanical Concerns
• Mode 6 Data
• Alternative Fuels ESM
EGR, Electronic Throttle
Control

Day 1
Workstations
• Rotation 1
• Rotation 2

Day 1
Wrap-up

January,2006

Break

Break

Day 1
Workstations
• Rotation 3
• Rotation 4

Advanced Engine Performance


INTRODUCTION
DAY ONE WORKSTATION ROTATIONS

Team 1

Worksheet 1
• Rough Idle
(Hands-on)

Team 2

Team 2

Worksheet 2
• WDS Recorded
Session

Team 3

Worksheet 3
• Hesitation
(Hands-on)

Team 1

Team 1

Worksheet 3
• Hesitation
(Hands-on)

Worksheet 2
• WDS Recorded
Session

Team 2

Worksheet 3

• Hesitation
(Hands-on)

Worksheet 4
• WDS Recorded
Session

Team 3

Team 3

Worksheet 4
• WDS Recorded
Session

Team 4

Worksheet 4
• WDS Recorded
Session

Advanced Engine Performance

Team 4

Worksheet 1
• Rough Idle
(Hands-on)

Worksheet 1

• Rough Idle
(Hands-on)

Team 4

Worksheet 2
• WDS Recorded
Session

January,2006

Team 1

Worksheet 4
• WDS Recorded
Session

Team 2

Worksheet 1
• Rough Idle
(Hands-on)

Team 3

Worksheet 2
• WDS Recorded
Session

Team 4

Worksheet 3
• Hesitation
(Hands-on)

Intro 7


INTRODUCTION
Day Two Flowchart

Review Day 1
Workstations

Introduce Day 2
Workstations

Day 2
Workstations
• Rotation 1
• Rotation 2

Intro 8

Instructor Lecture

• DTC-Driven Diagnosis

Lunch

Break

Instructor Lecture
• Symptom-Driven
Diagnosis

Break

Day 2
Workstations

End of
Day 2

Day 2
Wrap-up

January,2006

• Rotation 3
• Rotation 4

Advanced Engine Performance


INTRODUCTION
DAY TWO WORKSTATION ROTATIONS

Team 1

Worksheet 1
• Engine Miss
(Hands-on)

Team 1

Team 2

Worksheet 3
• No Start
(Hands-on)

Worksheet 3
• No Start
(Hands-on)

Team 2

Team 2

Worksheet 2
• No Start
• Rough Engine
(PC-Assist)

Team 3

Team 1

Worksheet 2

• No Start
• Rough Engine
(PC-Assist)

Worksheet 4
• Crank / No
Start
(PC-Assist)

Worksheet 3
• No Start
(Hands-on)

Team 3

Team 3

Worksheet 4
• Crank / No
Start
(PC-Assist)

Team 4

Worksheet 4
• Crank / No
Start
(PC-Assist)

Advanced Engine Performance

Team 4

Worksheet 1
• Engine Miss
(Hands-on)

Worksheet 1
• Engine Miss
(Hands-on)

Team 4

Worksheet 2
• No Start
• Rough Engine
(PC-Assist)

January,2006

Team 1

Worksheet 4
• Crank / No
Start
(PC-Assist)

Team 2

Worksheet 1

• Engine Miss
(Hands-on)

Team 3

Worksheet 2
• No Start
• Rough Engine
(PC-Assist)

Team 4

Worksheet 3
• No Start
(Hands-on)

Intro 9


INTRODUCTION
Day Three Flowchart

Review Day 2
Workstations

Lunch

Day 3
Workstations
• Rotation 1

• Rotation 2

Instructor Lecture
• Intermittent
Diagnosis

Introduce Day 3
Workstations

Break

End of
Day 3

Intro 10

January,2006

Break

Instructor Lecture
• Intermittent
Diagnosis
(continued)

Day 3
Workstations
• Rotation 3
• Rotation 4

Day 3
Wrap-up

Advanced Engine Performance


INTRODUCTION
DAY THREE WORKSTATION ROTATIONS

Team 1

Worksheet 1
• Intermittent
Buck/Jerk
(Hands-on)

Team 2

Worksheet 2
• Intermittent
Rough Idle
(PC-Assist)

Team 4

Worksheet 4
• WDS Recorded
Sessions

Worksheet 3

• Intermittent
Rough Idle
(Hands-on)

Worksheet 2
• Intermittent
Rough Idle
(PC-Assist)

Team 2

Team 2

Worksheet 3
• Intermittent
Rough Idle
(Hands-on)

Team 3

Worksheet 3
• Intermittent
Rough Idle
(Hands-on)

Team 1

Team 1

Worksheet 4

• WDS Recorded
Sessions

Team 3

Team 3

Worksheet 4
• WDS Recorded
Sessions

Team 4

Team 4

Worksheet 2
• Intermittent
Rough Idle
(PC-Assist)

Worksheet 1
• Intermittent
Buck/Jerk
(Hands-on)

Advanced Engine Performance

Worksheet 1
• Intermittent
Buck/Jerk

(Hands-on)

January,2006

Team 1

Worksheet 4
• WDS Recorded
Sessions

Team 2

Worksheet 1
• Intermittent
Buck/Jerk
(Hands-on)

Team 3

Worksheet 2
• Intermittent
Rough Idle
(PC-Assist)

Team 4

Worksheet 3
• Intermittent
Rough Idle
(Hands-on)

Intro 11


INTRODUCTION
Day Four Flowchart

Review of Day 3
Worksheets

Instructor review of
course material

Break

Final Exam

• Written Test
• WDS
Recording
• Hands-on

End of
Day 4

Intro 12

January,2006

Advanced Engine Performance

DAY ONE

MECHANICAL CONCERNS

Student Objective
•

Explain the importance of diagnosing mechanical concerns.

Content
•

Discuss the importance of diagnosing mechanical concerns

Advanced Engine Performance

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1-1


MECHANICAL CONCERNS

DAY ONE

Mechanical Concerns

Step 3: No DTC(s) Present Symptom Charts

Chart 1

SYSTEM/COMPONENT

REFERENCE (Section 5 Pinpoint
Test unless noted)

•

Automatic Transmission

•

Automatic
Transaxle/Transmission Section 307-01 of the
Workshop Manual

•

Base Engine

•

Engine System - General
Information, Section 303-00
of the Workshop Manual

•

A/C pressure sensor input to PCM

•

GO to DS22

Transmission Concerns
Most transmission failures on newer Ford vehicles will store DTCs, but not all. If you suspect the transmission is
the root cause of the concern, and no DTCs are stored, then road test the vehicle with an experienced transmission
technician. The transmission specialist may be able to confirm your diagnosis.
Base Engine Concerns
When diagnosing engine performance concerns you must not forget the possibility of internal engine damage.
Some base engine concerns are first thought to be engine performance issues and can quickly lead you in the
wrong direction.
A misfire DTC could be set by internal failures that affect compression in the combustion chamber. If the
powertrain control systems check out, performing a relative compression test using WDS may quickly reveal the
failure is internal.
Vibrations are a lot trickier. An out of balance flywheel may be perceived as an engine running rough. Trust your
knowledge and experience. If the powertrain control systems check out, think about internal or mechanical
systems that could create the symptom. Use EVA, reed tachometer, Sirometer, and Vibrate software to rule out
base engine concerns.
Air Conditioning
A malfunctioning air conditioning system can create sensations that may be perceived as an engine performance
concern. The A/C clutch cycling on and off could result in a surge or idle concern.

1-2

January,2006

Advanced Engine Performance

DAY ONE

MECHANICAL CONCERNS

NOTES

Advanced Engine Performance

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1-3


DAY ONE

MODE 6 DATA

Student Objective
•

Explain Mode 6 data.

Content
•

2-1

Explain Mode 6
-

Explain what it is

-

Explain what it is used for

January,2006

Advanced Engine Performance


MODE 6 DATA

DAY ONE

Mode 6 Data

WDS Mode 6 Data
Selecting Mode 6 on the scan tool provides access to the OBDII monitor diagnostic test results. This information
can be helpful when trying to identify a component you suspect is failing. The Mode 6 screen displays the
acceptable limits within which the component can function without setting a DTC. It also gives you the
component’s value stored at the time of the particular monitor completion. If the component, such as the catalyst,
is getting close to the failed limit, it may warrant a closer look.

Formula For (k) Counts To Volts
Formula
A

Units

Counts/13107

Counts to volts

Example: 32000 (k) counts divided by 13107 = 2.44 volts (scaled from 0 to 5)

Advanced Engine Performance

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2-2


DAY ONE

MODE 6 DATA

NOTES

2-3

January,2006

Advanced Engine Performance


DAY ONE

ALTERNATIVE FUEL DIAGNOSIS

Student Objective
•
•

Identify if a repair can be performed on a bi-fuel vehicle
Identify the components used on Alternative Fuel Vehicles

Content
•

Service area precautions

•

Engine Performance Concerns in relation to alternative fuel vehicles

•

-

Preliminary diagnostic steps

-

DTCs - Identify whether repair can be made

Alternative Fuel Vehicle components

Advanced Engine Performance

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3-1