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MODISTM
Level 1 Basic—Intermediate
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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
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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
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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
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Diagnostic Basics
Front DoorFront Door
Back DoorBack Door
PCMPCMPCMPCMCause or Effect?
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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?
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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
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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.
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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
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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
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Side Panel
Mini-USB ConnectionDirect Cable Connection
for connection to PC
Side CF SlotCF Slot for Software upgrades,
and Memory Storage
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Another MODISExclusive
VGA OutputDirect VGA interface
for monitors or projection units
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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
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Yes–No ButtonsFamiliar,
intuitive navigation
Display ControlContrast, brightness,And programmable
Power Button
Thumb PadMulti-directional
Mouse-type navigation
FilterReplaceable cooling filter
MODISControl Features
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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
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Power Up!
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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
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Main Menu
• The SCANNER drawer accesses vehicle communication
at the back door.
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Main Menu
• The INFO drawer provides information for individual component testing and an online shortcut.
• This “just-in-time” training addresses front-door diagnostics.
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Main Menu
• The MULTIMETER drawer contains a wide choice of multimeters, including digital (DVOM) and single or dual graphing meters.
• Scroll down.
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Main Menu
• The SCOPE drawer holds Lab Scopes and Ignition Scopes.
• Scroll down.
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Main Menu
• The GASES drawer can hold a powerful, but optional, FGA (Flexible Gas Analyzer) interface.
• Scroll down.
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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.
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Main Menu
• The UTILITIES drawer contains custom set-up options, tool help, and more.
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Utilities—Tool Setup
• Scroll right to Tool Setup. • Scroll right again to Units.• Press Y.
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Utilities—Tool Setup
• Highlight Vacuum window inHg and Press Y.• Scroll up or down to make your selection.• Press N to close window.
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Utilities—Tool Setup
• Highlight Temperature window and Press Y.• Scroll up or down to make your selection.• Press N to close window.
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Utilities—Tool Setup
• Scroll down to Ignition System.• Press Y.
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Utilities—Tool Setup
• 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.
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Utilities—Tool Setup
• Scroll down to Power Management.• Press Y.
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Utilities—Tool Setup
• Scroll up or down to select.• Press N to close window.
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Utilities—Tool Setup
• Scroll down to Save Data.• Press Y.
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Utilities—Tool Setup
• Press Y again. • Press N to close window.
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Utilities—Tool Setup
• Scroll down to Printer.• Press Y.
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Utilities—Tool Setup
• Press Y again.
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Utilities—Tool Setup
• Choose your printer.• Press N to close.
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Utilities—Tool Setup
• Scroll down to Date.• Press Y.
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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.
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Utilities—Tool Setup
• Scroll down to Time.• Press Y.
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Utilities—Tool SetupEXERCISE:• Set the clock.• Highlight the time, and Press Y to select.• Press N to close window.
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Utilities—Tool Setup
• Scroll down to the Brightness/Contrast Button.• Press Y.
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Utilities—Tool Setup
• What function do you want the button to perform?• Select S Button Popup.• Press Y.• Press N to close window.
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Utilities—Tool Setup
• Selections are available between the classic MODIS desktop and a white background theme.
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Utilities—Tool Setup
• Scanner View allows the user to save the previous scanner view.
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Utilities—Tool Setup
• FGA Demo allows viewing the 5 Gas analyzer program in a demonstration mode.
• A check mark indicates DEMO is selected.
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Utilities—Gas Bench Setup
• Scroll to Gas Bench Setup.• This function allows for Gas Bench testing and other
options.
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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.
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Utilities—Legacy Software
• Designed to be used when directed by customer care.
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Utilities—HDS Units
• Scroll down to HDS.
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Utilities—Tool Help
• Scroll down to Tool Help.• Press Y.
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Utilities—Tool Help
• Note the similarity to the Windows help function on your PC.
• Topics are in the left (contents) window, information is on the right.
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Utilities—Tool Help
• Scroll down and highlight About Help.
• Press Y.
• Scroll right to the Info window, then up or down to view the article.
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Utilities—Tool Help
• Continue moving up or down to view the article.• Note the slide bar position… There’s more….
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Utilities—Easy Scroll
• Easy Scroll lets you use only the Thumb Pad arrows to highlight and select items.
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Utilities—Easy Scroll
• Press Y to add or remove a check mark.• When you see a check mark, Easy Scroll is turned on.
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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.
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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.
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Utilities—Connect to PC
• Connecting your MODIS unit to a computer to share files requires optional Hardware & Software.
• Do not press Y
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Utilities—Run…
• The Run... option is used to access special Snap-on® CF card applications.
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Utilities—Shop Info
• Scroll down to Shop Info.• Press Y.
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Utilities—Shop Info
• Use a USB keyboard to enter information.• Press Y.• You can print this information.
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Utilities—System Info
• Scroll down to System Info.• Press Y.
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Utilities—System Info
• The System Info option lets you view your display unit’s configuration and software revision.
• Press N to exit.
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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
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Main Menu—INFO
• Scroll to the second drawer (INFO).• Component Testing Menu will appear;
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Info—Component Testing• Highlight New Vehicle.• Choose US DOMESTIC, Chevrolet, Fuel Injection, 2001,
Tahoe, 5.3L• Press Y to accept new vehicle.
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Info—Component Testing
• MODIS defaults to the Component Testing menu after selecting New Vehicle.
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Info—Component Testing
• Scroll down and select Injector.• Press Y to select Component Information.
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Info—Component Testing
• 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?
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Info—Component Testing
• “N” will back you up to the Injector Menu.• Scroll down to Tests. • Press Y to select.
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Info—Component Testing
• There are different tests for different situations.• KOEC (Key On Engine Cranking) tests the injectors
signature while cranking.
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Info—Component Testing
• Pulse Width Test graphs the command from the PCM of the injectors on time.
• Scroll down.
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Info—Component Testing
• Resistance Test measures ohms on individual injectors.• Scroll down.
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Info—Component Testing
• Signature Test is used to display a waveform voltage over time.
• Scroll down.
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Info—Component Testing
• Current Ramp Test displays the picture of current flow through a circuit.
• With CURRENT RAMP TEST highlighted, press Y.
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Info—Component Testing
• Note the down arrow button in the procedure window.• More information is available.• Scroll down to highlight the window.
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Info—Component Testing
• Notice the blue highlight around the procedure window. • To access additional information, press Y. • Now you can scroll down for more information.
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Info—Component Testing
• Note the support window, in the upper right corner.• The instructions match the pictures. • Scroll down.
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Info—Component Testing
• To get accurate readings, the current probe calibration adjustments must be made.
• On-screen instructions guide you through the process.
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Info—Component Testing
• Circuit hook-up instructions show examples.• Use the > option to expand.
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Info—Component Testing
• 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.
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Info—Component Testing
• The procedure window will have tips for the test selected.
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Info—Component Testing
• Different examples with different possibilities.• The procedure window lists some possible causes. • Note: Press < to return to single injector testing.
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Info—Component Testing
• Hooking up to an individual injector shows an individual sample pattern.
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Info—Component Testing
• Perform the test and comparison to confirm the cause.
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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
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Info—Previous Vehicle
• Starting from the Component Test menu.• Scroll to Previous Vehicle.• Press Y.
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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.
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Info—A-Z Index
• Scroll down to select A-Z Index.
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Info—A-Z Index
EXERCISE:• How can you visually identify the difference between a Titanium and
a Zirconia oxygen sensor?• Begin now
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Info—A-Z Index
• Scroll down to T.• Scroll down and select Titanium O2 Sensor.
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Info—A-Z Index
• “Just-in-time” training.• Note the down arrow in the lower right corner.• Scroll down for more information.
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Info—A-Z Index
• Scroll down to find your clue….• Press N to return to Component Test menu.
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Info—Power User Test
• Scroll to Power User Setups (with help).• Scroll to and select Transducer Tests.• Scroll to and select Exhaust Backpressure Test.
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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.
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Info—Features & Benefits
• Press N to return to the Component Testing menu.
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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.
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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.
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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
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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
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Multimeter
• Scroll down to Multimeter.• Scroll right to open the Multimeter drawer.
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Multimeter
• The Graphing Meter menu shows all available measurements.
• Scroll down to Digital Meter.
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Multimeter—Digital
• The Digital Meter Menu shows all available measurements.
• Scroll right to Volts DC and select.
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Multimeter—Digital
Exercise:• Test the 9-volt battery from the demo board.• Scroll to the reset, press Y, note min/max.• Press N to close.
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Multimeter—Digital
• Scroll down to Ohms.• Press N to use the previous calibration value.
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Multimeter—Digital
• Connect the test leads together.• Note Ohms…what’s wrong?• Is this an open, or shorted circuit?
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Multimeter—Options• Move test leads to Channel 3 and 4.• Try again.
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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.
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Multimeter—Digital
• 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.
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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
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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
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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
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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.
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Multimeter—Digital
• What happens when we turn the center knob?• Let’s look at it a different way• Press N to return to the Multimeter menu.
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Multimeter—Digital
• Scroll left to Graphing Meter.• Scroll to Frequency and select.
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Multimeter—Graphing
• Still connected to the demo board we can see the frequency measured in Hz.
• Make sure View is set for Full Digital.
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Multimeter—Graphing
• Adjust the center button and notice that frequency changed while voltage remained the same.
• Highlight view, scroll to split screen and press Y.
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Multimeter—Graphing
• Adjust the center button.• Note the change in the graph as well as min/max.• Turn the glitch switch to on.
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Multimeter—Graphing
• Can you spot the intermittent glitch?
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Multimeter—Graphing
• Scroll down to the lower toolbar and highlight Ch 1.• Scroll down and highlight Ch 2.• Scroll right, highlight Displayed and press Y.
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Multimeter—Graphing
• Hook your Ch 2 leads to the same frequency signal as Ch 1.
Green/Black Ch 2 Lead
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Multimeter—Graphing
• Dual-channel viewing allows you to compare relationships.
• We’re viewing voltage on Ch 2 and frequency on Ch 1.
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Multimeter—Graphing
• Adjusting the center button again changes frequency but not voltage.
• The comparison shows the story.
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Multimeter—Graphing
• Press N to return to Multimeter menu.
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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
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MODIS 1
Main Menu–Scope
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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.
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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.
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Scope
What is a lab scope?
• Use single channel to view a signal’s “signature.”
• Use multi-channel to view “relationships”, comparing component reactions.
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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.
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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.
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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).
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Scope
When and where would I use a lab scope?
• Front door
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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!
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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
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Scope
• Scroll right to open the Scope drawer.
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Scope
• Scroll right to 4 Ch Lab Scope.• Press Y.
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Exercise—Scope Channels
• Notice four color-coded channels.• Let’s begin by focusing on just one channel.• Convert this to a single channel lab scope for now.
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Exercise—Scope Channels
• Scroll down to the lower tool bar, highlight “Channel.”• Press Y to open channel window.• Scroll to Ch2.
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Exercise—Scope Channels
• Scroll right, highlight Displayed.• √ indicates selected channel is displayed.• Press Y to de-select the channel.• √ will be removed.
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Exercise—Scope Channels
• The green trace (Ch 2) is gone.• Highlight Ch 3.• Scroll right, and remove Ch 3 and then Ch 4.
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Exercise—Scope Channels
• We now have a single-trace Lab Scope.
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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
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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.
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Scope—Settings
• Scroll to the far right, highlight Setup, and press Y.• Scroll down to Units. • Press Y.
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Scope—Settings
• This is a shortcut to the setup drawer for items and settings that pertain to Lab Scope.
• Press N to close.
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Scope—Settings
• Scroll down to Ignition System.• Press Y.
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Scope—Settings • Changes to the type of ignition system can be made
without closing the scope drawer. – This is also accessed from Utilities
• Press N to close.
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Scope—Settings
• Scroll down to Grid.• Press Y.
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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.
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Scope—Settings • Scroll down to Trigger Display.• Press Y.• Trigger Display lets you know exactly where the trigger
point is set.
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Scope—Settings
• Scroll down to Scales Display.• Press Y to activate.• Note the Voltage and Sweep scales.
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Scope—Settings
• Scroll down to Inverse Colors. Press Y.• Observe the “new” screen.• Press Y to deselect Inverse Colors.
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Scope—Lower Toolbar• Scroll down to the lower toolbar.• Select Ch 1
– Displayed
– Inverted
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Scope—Channel Options
• Coupling AC—subtracts the average value of a waveform to see small variations.
• Blocks the DC portions of an input signal.
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Scope—Channel Options
• Peak Detect helps see high-speed glitches.
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Scope—Channel Options
• Filter selected helps block noise and RFI on the channel so you have a clearer picture of what’s happening.
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Scope—Channel Options
• Auto Find is a quick way to fit a selected signal on the screen.
• Press N to close.
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Scope—Test Lead
• Scroll right.• Press Y. • Note the ability to test various items on each channel.
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Scope—Voltage
• Scroll right, highlight Channel Voltage.• Press Y open up the voltage selection menu.
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Scope—Signal Zero Offset
• Scroll right to signal zero offset and press Y.• Scroll up or down.• Note the zero (ground) line move.
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Scope—Sweep • Scroll right to sweep.• Press Y to expand the menu.• This sets the amount of time displayed across the
screen.
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Scope—Sweep
• Return sweep time to 10 ms.
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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:
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Scope—Display Trigger
• This allows you to choose which channel is triggered when using multi channels.
• Press N to close.
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Scope—Display Trigger
• Scroll right to Trigger Slope.• Pressing Y toggles between the rising and falling edge of
the displayed pattern..
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Scope—Display Trigger
• Scroll right to Trigger position and press Y• Scroll up, down, right, or left to position trigger.
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Main Menu
• Press N to return to the Main Menu.
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Diagnostic Tool Box
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