© 2010 Snap-on Incorporated; All Rights Reserved MODIS TM Level 1 Basic—Intermediate

© 2010 Snap-on Incorporated; All Rights Reserved

MODISTM

Level 1 Basic—Intermediate

© 2008 Snap-on Incorporated; All Rights Reserved 2

Level 1 Course Objectives

• In this course, you will learn about basic MODIS features and functionality. You will learn how to:– Power-up the unit

– Work with controls and navigation

– Work with menus

– Configure settings

– Work with the Component Test Meter

– Work with the Lab Scope


Agenda• MODIS Component Test Overview

– The MODIS platform (hands-on, no power)– MODIS navigation and setup functions (power on)

• Component Test Meter – Digital Multimeter– Graphing Meter– Component Testing Info

• Lab Scope– Introduction to Lab Scope– Scope functions and exercises (demo board)– Scope tour



Introduction

• This module covers:– MODIS Component Test Meter overview

– Who, What, When, Why, and Where we need a component test meter

• When you complete this module, you will: – Understand the cause is found at the “front door”

– Understand the role component testing has in a diagnostic routine

MODIS Module 1-1-1


Diagnostic Basics

Front DoorFront Door

Back DoorBack Door

PCMPCMPCMPCMCause or Effect?


Component Test Overview• Who

– needs component test capabilities and information?

• What– is a component test tool?

• When– should we do component testing?

• Why– are component test capabilities and information

so valuable?

• Where– do we perform these tests?


Back Door Checks•Trouble Codes•Graphing Data History •Troubleshooter

The Back Door gives you a Direction

Back DoorBack DoorFront

Door =Inputs from: Sensors Power & Ground

Front Door =Inputs from: Sensors Power & Ground


Remember: Back door info shows effect only! This is a “road sign” as to the direction to take in finding the cause.

The Cause is Always Found at the Front Door

Front DoorFront Door Back

Door =Processed Information, Outputs, Data, Trouble Codes, etc.

Back Door =Processed Information, Outputs, Data, Trouble Codes, etc.


The MODIS Overview

• This module covers:– The MODIS tool (hands-on, no power)

• When you complete this module, you will: – Be familiar with the MODIS expandable platform– Be familiar with MODIS hardware and peripherals– Be familiar with MODIS plug-ins– Understand MODIS controls

MODIS Module 1-2-1


Serial PortAccessories:5 Gas & HDS

IRDA (infrared)Bi-directional

wireless printer

Top CF Card SlotUpgrades,

Additional storage, Wireless communication

USB PortKeyboard/Mouse,

Printer, and Data Storage

Battery IndicatorSource and status

Power InputConverter, cig/batt adapter

MODIS ExpandablePlatform


Side Panel

Mini-USB ConnectionDirect Cable Connection

for connection to PC

Side CF SlotCF Slot for Software upgrades,

and Memory Storage


Another MODISExclusive

VGA OutputDirect VGA interface

for monitors or projection units


MODIS Plug-insAccessory Port

RPM, split cable with transducersIgnition Trigger Pick-up

Scope Inputs4-channel Input,

1-2 Hi Impedance,3-4 Ohms

Scanner™ ModuleUpgradeable

Lab Scope Module4-channel scope

DVOM, Low Amps,and Ignition Scope


Yes–No ButtonsFamiliar,

intuitive navigation

Display ControlContrast, brightness,And programmable

Power Button

Thumb PadMulti-directional

Mouse-type navigation

FilterReplaceable cooling filter

MODISControl Features



MODIS Navigation and Setup• This module covers:

– General navigation and functions

• When you complete this module, you will:– Know basic navigation – Understand the Main Menu (Toolbox)– Understand Utilities content and setup options

• Exercise:– Setting basic tool settings and defaults

MODIS Module 1-3-1


Power Up!


Main Menu—Diagnostic Tool Box

Fast Track Component Test Meter & Online Info

US, Asian, Global OBD, Troubleshooters (Euro & HD Opt.)

DVOM, Single & Dual Power Graphing Meters

4 Trace Lab Scope, Secondary Ignition, & Pre-sets

FGA interface -Digital, Graph & Combination display

Tool Help, Software Update, and Set-up Options

Store/Label/Recall Data from internal or CF Memory


Main Menu

• The SCANNER drawer accesses vehicle communication

at the back door.


Main Menu

• The INFO drawer provides information for individual component testing and an online shortcut.

• This “just-in-time” training addresses front-door diagnostics.


Main Menu

• The MULTIMETER drawer contains a wide choice of multimeters, including digital (DVOM) and single or dual graphing meters.

• Scroll down.


Main Menu

• The SCOPE drawer holds Lab Scopes and Ignition Scopes.

• Scroll down.


Main Menu

• The GASES drawer can hold a powerful, but optional, FGA (Flexible Gas Analyzer) interface.

• Scroll down.


Main Menu• The SAVED DATA drawer is the filing cabinet.• It stores, labels, and recalls data from internal,

CF memory or USB Thumb Drive memory. • Scroll down.


Main Menu

• The UTILITIES drawer contains custom set-up options, tool help, and more.


Utilities—Tool Setup

• Scroll right to Tool Setup. • Scroll right again to Units.• Press Y.



• Highlight Vacuum window inHg and Press Y.• Scroll up or down to make your selection.• Press N to close window.



• Highlight Temperature window and Press Y.• Scroll up or down to make your selection.• Press N to close window.



• Scroll down to Ignition System.• Press Y.



• Here you can make changes to the type of vehicle you are testing.• Press Y to open Ignition Type window, and choose your system

specifications.• Press N to close window.



• Scroll down to Power Management.• Press Y.



• Scroll up or down to select.• Press N to close window.



• Scroll down to Save Data.• Press Y.



• Press Y again. • Press N to close window.



• Scroll down to Printer.• Press Y.



• Press Y again.



• Choose your printer.• Press N to close.



• Scroll down to Date.• Press Y.


Utilities—Tool SetupEXERCISE:• Highlight Day, Month, Year, or preferred Style.• Press Y to open, scroll up or down to correct choice,

press Y to select. Press N to close window.



• Scroll down to Time.• Press Y.


Utilities—Tool SetupEXERCISE:• Set the clock.• Highlight the time, and Press Y to select.• Press N to close window.



• Scroll down to the Brightness/Contrast Button.• Press Y.



• What function do you want the button to perform?• Select S Button Popup.• Press Y.• Press N to close window.



• Selections are available between the classic MODIS desktop and a white background theme.



• Scanner View allows the user to save the previous scanner view.



• FGA Demo allows viewing the 5 Gas analyzer program in a demonstration mode.

• A check mark indicates DEMO is selected.


Utilities—Gas Bench Setup

• Scroll to Gas Bench Setup.• This function allows for Gas Bench testing and other

options.


Utilities—System Tools

• Scroll down to System Tools.• Add Program allows you to add optional software.• Update Scanner files.• System Restore allows you to re-install software.


Utilities—Legacy Software

• Designed to be used when directed by customer care.


Utilities—HDS Units

• Scroll down to HDS.


Utilities—Tool Help

• Scroll down to Tool Help.• Press Y.



• Note the similarity to the Windows help function on your PC.

• Topics are in the left (contents) window, information is on the right.



• Scroll down and highlight About Help.

• Press Y.

• Scroll right to the Info window, then up or down to view the article.



• Continue moving up or down to view the article.• Note the slide bar position… There’s more….


Utilities—Easy Scroll

• Easy Scroll lets you use only the Thumb Pad arrows to highlight and select items.


Utilities—Easy Scroll

• Press Y to add or remove a check mark.• When you see a check mark, Easy Scroll is turned on.


Utilities—Charge Battery• Scroll down to Charge Battery.• A √ will appear when MODIS is charging.• There is no need to select √ unless you wish to “top off”

the battery.


Utilities—Charge Battery• Scroll down to Charge Battery.• A √ will appear when MODIS is charging.• There is no need to select √ unless you wish to “top off”

the battery.


Utilities—Connect to PC

• Connecting your MODIS unit to a computer to share files requires optional Hardware & Software.

• Do not press Y


Utilities—Run…

• The Run... option is used to access special Snap-on® CF card applications.


Utilities—Shop Info

• Scroll down to Shop Info.• Press Y.


Utilities—Shop Info

• Use a USB keyboard to enter information.• Press Y.• You can print this information.


Utilities—System Info

• Scroll down to System Info.• Press Y.


Utilities—System Info

• The System Info option lets you view your display unit’s configuration and software revision.

• Press N to exit.


Open Second Drawer (INFO)• This module covers:

– Vehicle identification– Vehicle systems selection– Component information and test configurations– Multiple tests for components leveraging the built-in instrumentation with information

• When you complete this module, you will:– Be familiar with navigation techniques needed to get the most out of the CTM (Component Test Meter)

• Exercise:– Built-in (“just-in-time”) Training

MODIS Module 1-4-1


Main Menu—INFO

• Scroll to the second drawer (INFO).• Component Testing Menu will appear;


Info—Component Testing• Highlight New Vehicle.• Choose US DOMESTIC, Chevrolet, Fuel Injection, 2001,

Tahoe, 5.3L• Press Y to accept new vehicle.


Info—Component Testing

• MODIS defaults to the Component Testing menu after selecting New Vehicle.



• Scroll down and select Injector.• Press Y to select Component Information.



• What is a component?• Why is it bolted on the car?• How does it work?• Where is it located?

• What is the best test location (not always at the component)?

• When testing, which wires do we test?



• “N” will back you up to the Injector Menu.• Scroll down to Tests. • Press Y to select.



• There are different tests for different situations.• KOEC (Key On Engine Cranking) tests the injectors

signature while cranking.



• Pulse Width Test graphs the command from the PCM of the injectors on time.

• Scroll down.



• Resistance Test measures ohms on individual injectors.• Scroll down.



• Signature Test is used to display a waveform voltage over time.

• Scroll down.



• Current Ramp Test displays the picture of current flow through a circuit.

• With CURRENT RAMP TEST highlighted, press Y.



• Note the down arrow button in the procedure window.• More information is available.• Scroll down to highlight the window.



• Notice the blue highlight around the procedure window. • To access additional information, press Y. • Now you can scroll down for more information.



• Note the support window, in the upper right corner.• The instructions match the pictures. • Scroll down.



• To get accurate readings, the current probe calibration adjustments must be made.

• On-screen instructions guide you through the process.



• Circuit hook-up instructions show examples.• Use the > option to expand.



• Note the sample pattern to compare when testing at the source.

• On a live vehicle, we should see a similar pattern in the lower display window.

• Scroll down for more information.



• The procedure window will have tips for the test selected.



• Different examples with different possibilities.• The procedure window lists some possible causes. • Note: Press < to return to single injector testing.



• Hooking up to an individual injector shows an individual sample pattern.



• Perform the test and comparison to confirm the cause.


Second Drawer—INFO

• This module covers:– The Second Drawer (INFO) additional information– Just-in-time training and built-in classes

• When you complete this module, you will:– Know how to use Previous Vehicle– Know what is in the A-Z Index– Know when to review Power User Tests– Understand Classes, Tests, Tips, and more, which will strengthen your diagnostic understanding

• Exercise:– Find information contained within CTM

MODIS Module 1-5-1


Info—Previous Vehicle

• Starting from the Component Test menu.• Scroll to Previous Vehicle.• Press Y.


Info—Previous Vehicle

• Save time by using the list of previous vehicles instead of re-entering the new vehicle information.

• Highlight the vehicle, then press Y to select or,• Press N to close window.


Info—A-Z Index

• Scroll down to select A-Z Index.


Info—A-Z Index

EXERCISE:• How can you visually identify the difference between a Titanium and

a Zirconia oxygen sensor?• Begin now


Info—A-Z Index

• Scroll down to T.• Scroll down and select Titanium O2 Sensor.


Info—A-Z Index

• “Just-in-time” training.• Note the down arrow in the lower right corner.• Scroll down for more information.


Info—A-Z Index

• Scroll down to find your clue….• Press N to return to Component Test menu.


Info—Power User Test

• Scroll to Power User Setups (with help).• Scroll to and select Transducer Tests.• Scroll to and select Exhaust Backpressure Test.


Info—Power User Test

• The instructions will prompt you to connect a pressure probe (transducer) to the MODIS unit.

• Press N (in our case) to continue.• The procedure window provides the information.


Info—Features & Benefits

• Press N to return to the Component Testing menu.


Info—How To

• Scroll down and select How To.

• Choose from the list to learn how to perform certain tests and procedures.

• Review as needed.


Info—How To

• Scroll down and select How To.

• Choose from the list to learn how to perform certain tests and procedures.

• Review as needed.


Lab Scope

• This section covers:– Introduction to Lab Scope– Scope functions – Scope tour– Menu Navigation

• When you complete this module, you will:– Understand Measurements vs. Time– Understand single and multiple Channels


Multimeter• This module covers:

– Multimeter

• When you complete this module, you will:– Understand Digital vs. Graphing and Min / Max– Know how to use Graphing, ALL Available Selections– Know how to use Calibration– Understand Channel 3 and 4 functionality

• Exercises:– Test the 9-volt battery from Demo Board– Demo Board exercises digital and graphing

MODIS Module 1-6-1


Multimeter

• Scroll down to Multimeter.• Scroll right to open the Multimeter drawer.


Multimeter

• The Graphing Meter menu shows all available measurements.

• Scroll down to Digital Meter.


Multimeter—Digital

• The Digital Meter Menu shows all available measurements.

• Scroll right to Volts DC and select.



Exercise:• Test the 9-volt battery from the demo board.• Scroll to the reset, press Y, note min/max.• Press N to close.



• Scroll down to Ohms.• Press N to use the previous calibration value.



• Connect the test leads together.• Note Ohms…what’s wrong?• Is this an open, or shorted circuit?


Multimeter—Options• Move test leads to Channel 3 and 4.• Try again.


Multimeter—Digital• Remove the battery from the demo board.• Find out which circuits are closed and which are open.• This example shows a closed circuit: some resistance.• Press N to return to Multimeter menu.



• Select Volts DC.• Move leads back to Ground and Channel 1.• Don’t press Y yet.• Connect to the demo board as shown on the next slide.


Power

Button

Power

Button

Fuel Injector

Fuel Injector

VariableFrequency

& Duty

VariableFrequency

& Duty FrequencyFrequency GROUNDGROUNDSine WaveSine Wave

VariableVoltage

VariableVoltage

Secondary

Ignition

Secondary

Ignition

GROUNDGROUND

Injector Type

Injector Type Normal / GlitchNormal / Glitch

VoltageVoltageFrequencyFrequency InjectorPulse

InjectorPulse


Info—Demo Board Exercise

• The Demo Board is a signal generator.

• The various switches and buttons simulate most patterns.– Self study exercises are available in CTM Features & Benefits

section.

Switches KNOBS


AA

BB CC

DD

Power

Button

Power

Button

Fuel Injector

Fuel Injector

VariableFrequency

& Duty

VariableFrequency

& Duty FrequencyFrequency GROUNDGROUNDSine WaveSine Wave

VariableVoltage

VariableVoltage

Secondary

Ignition

Secondary

Ignition

GROUNDGROUND

Injector Type

Injector Type Normal / GlitchNormal / Glitch

VoltageVoltageFrequencyFrequency InjectorPulse

InjectorPulse


Multimeter—Digital• On a digital signal with a 5-volt reference, what would

the voltage reading be on the input circuit?• Let’s find out – Turn knobs straight up.• Power on the demo board and press Y.



• What happens when we turn the center knob?• Let’s look at it a different way• Press N to return to the Multimeter menu.



• Scroll left to Graphing Meter.• Scroll to Frequency and select.


Multimeter—Graphing

• Still connected to the demo board we can see the frequency measured in Hz.

• Make sure View is set for Full Digital.



• Adjust the center button and notice that frequency changed while voltage remained the same.

• Highlight view, scroll to split screen and press Y.



• Adjust the center button.• Note the change in the graph as well as min/max.• Turn the glitch switch to on.



• Can you spot the intermittent glitch?



• Scroll down to the lower toolbar and highlight Ch 1.• Scroll down and highlight Ch 2.• Scroll right, highlight Displayed and press Y.



• Hook your Ch 2 leads to the same frequency signal as Ch 1.

Green/Black Ch 2 Lead



• Dual-channel viewing allows you to compare relationships.

• We’re viewing voltage on Ch 2 and frequency on Ch 1.



• Adjusting the center button again changes frequency but not voltage.

• The comparison shows the story.



• Press N to return to Multimeter menu.



Scope• This module covers:

– Scope

• When you complete this module, you will:– Understand Measurements vs. Time– Understand single and multiple Channels– Know why a DMM is not good enough– Know when and where to use a lab scope

• Exercise:– Demo board exercises, digital and graphing

MODIS Module 1-7-1


MODIS 1

Main Menu–Scope


Lab Scope Quick Review

• It displays (“paints a picture”) of voltage (and other measurements) over time.

• It pinpoints the cause of the problem at the front door.


Scope

What is a lab scope?

• It displays (“paints a picture”) of voltage (or other measurements) over time.

• Voltage is measured vertically; time is measured horizontally.


Scope

What is a lab scope?

• Use single channel to view a signal’s “signature.”

• Use multi-channel to view “relationships”, comparing component reactions.


Scope

Why did we start using lab scopes?

• A DMM was not showing enough information about computer-controlled circuits.

• On newer systems, the speed at which the systems are checked (sample time) has greatly increased.


Scope

Why did we start using lab scopes?

• In the 1980s and early 90s, a 500 millisecond glitch may not have affected driveability at all.

• Today, a 500 microsecond glitch can affect a vehicle’s drivability.


Scope

Why? Intermittent problems.

• A Ford EEC 4 controller performs 625 calculations a second.

• A Ford EEC 5 controller performs 1.5 million calculations a second.

• We see CAN systems moving even faster in the future

• The best DMMs sample and display 4 times a second (250 ms).


Scope

When and where would I use a lab scope?

• Front door


Scope

When and where would I use a lab scope?

• Front door

Remember that the scan tool only shows us the effect of a problem. Being able to view the effect is valuable and gives a major clue, but…

IT IS STILL ONLY THE EFFECT!


Exercise—Scope Channels

• This module covers:– Scope Channels

• When you complete this module, you will:– Understand 4 color-coded channels– Know how to select and deselect channels

• Exercise:– Turn 4 trace Lab Scope to Single Trace Lab Scope

MODIS Module 1-8-1


Scope

• Scroll right to open the Scope drawer.


Scope

• Scroll right to 4 Ch Lab Scope.• Press Y.



• Notice four color-coded channels.• Let’s begin by focusing on just one channel.• Convert this to a single channel lab scope for now.



• Scroll down to the lower tool bar, highlight “Channel.”• Press Y to open channel window.• Scroll to Ch2.



• Scroll right, highlight Displayed.• √ indicates selected channel is displayed.• Press Y to de-select the channel.• √ will be removed.



• The green trace (Ch 2) is gone.• Highlight Ch 3.• Scroll right, and remove Ch 3 and then Ch 4.



• We now have a single-trace Lab Scope.



Menu Navigation

• This module covers:– Menu Navigation

• When you complete this module, you will:– Understand the functionality of each menu option

• Exercise:– Tour the top and bottom menu bars

MODIS Module 1-9-1


Scope—Views • Highlight View, and RPM. Press Y to activate.• Notice the digital and bar graph RPM drop-down window.• Scroll down to Digital and press Y.• Notice the Digital display, including min/max, also color-coded to the

active channel.


Scope—Settings

• Scroll to the far right, highlight Setup, and press Y.• Scroll down to Units. • Press Y.


Scope—Settings

• This is a shortcut to the setup drawer for items and settings that pertain to Lab Scope.

• Press N to close.


Scope—Settings

• Scroll down to Ignition System.• Press Y.


Scope—Settings • Changes to the type of ignition system can be made

without closing the scope drawer. – This is also accessed from Utilities



Scope—Settings

• Scroll down to Grid.• Press Y.


Scope—Settings • A grid allows for accurate comparison testing without

looking at numbers as reference.• A √ will turn the grid on, or off.• Leave the grid off for now.


Scope—Settings • Scroll down to Trigger Display.• Press Y.• Trigger Display lets you know exactly where the trigger

point is set.


Scope—Settings

• Scroll down to Scales Display.• Press Y to activate.• Note the Voltage and Sweep scales.


Scope—Settings

• Scroll down to Inverse Colors. Press Y.• Observe the “new” screen.• Press Y to deselect Inverse Colors.


Scope—Lower Toolbar• Scroll down to the lower toolbar.• Select Ch 1

– Displayed

– Inverted


Scope—Channel Options

• Coupling AC—subtracts the average value of a waveform to see small variations.

• Blocks the DC portions of an input signal.



• Peak Detect helps see high-speed glitches.



• Filter selected helps block noise and RFI on the channel so you have a clearer picture of what’s happening.



• Auto Find is a quick way to fit a selected signal on the screen.



Scope—Test Lead

• Scroll right.• Press Y. • Note the ability to test various items on each channel.


Scope—Voltage

• Scroll right, highlight Channel Voltage.• Press Y open up the voltage selection menu.


Scope—Signal Zero Offset

• Scroll right to signal zero offset and press Y.• Scroll up or down.• Note the zero (ground) line move.


Scope—Sweep • Scroll right to sweep.• Press Y to expand the menu.• This sets the amount of time displayed across the

screen.


Scope—Sweep

• Return sweep time to 10 ms.


Scope—Display Trigger

• Scroll right to Display Trigger Ch 1 and Press Y.• Selecting TRIGGER TYPE lets you set the criteria used

to start the display of data. There are three types of Trigger settings:



• This allows you to choose which channel is triggered when using multi channels.




• Scroll right to Trigger Slope.• Pressing Y toggles between the rising and falling edge of

the displayed pattern..



• Scroll right to Trigger position and press Y• Scroll up, down, right, or left to position trigger.


Main Menu

• Press N to return to the Main Menu.


Diagnostic Tool Box

Documents

© 2010 Snap-on Incorporated; All Rights Reserved MODIS TM Level 1 Basic—Intermediate