Cornwell Scan Tools Glossary
General Testing Capabilities
Auto/Light Truck - The most common scan tool application.
Heavy Duty - For class 6 through Class 8 over the road semi’s
Motorcycle - Scan tools for 2-wheelers!
Marine - Scan tool for boats.
The following functions make up the the OBDII specification. Not all tools perform all modes.
Mode 01 - Readiness Monitors & Datasteam - Inspection & Maintenance monitors and generic scan tool data.
Mode 02 - Freeze Frame Data - Generic data that is captured when a trouble code is set.
Mode 03 - Read Trouble Codes - Read the trouble codes set in the vehicle.
Mode 04 - Clear Trouble Codes - Clears the trouble codes.
Mode 05 - O2 Sensor Monitoring - Sometime called an O2 sensor test. Helps verify the operation of the O2 sensor(s)
Mode 06 - Other Tests - Vehicle manufactures can do anything they want with Mode 6. Also called continuous tests. This is where Ford puts misfire tests.
Mode 06 - Enhanced - Traditional Mode 6, but with the Scan Tool Manufacturers attempting to make it easier to read and understand.
Mode 07 - Pending Codes - Codes that are almost ready to be set.
Mode 08 - Generic Bi-Directional Control - The basic ability to cause an action to happen with the vehicle. Very limited. See Enhanced Bi-Directional for more information.
Mode 09 - Request Vehicle Information - A way to recall the VIN number of the vehicle
Mode 10 - Permanent Codes/Recall Cleared Codes - Codes that have recently been cleared.
Clears All Trouble Codes from All Systems - The ability to clear trouble codes on all systems on the vehicle, not just engine and transmission.
OBDI - Software and hardware required to test vehicles older than 1996. European and Asian coverage gets spotty with OBDI.
ABS - Tests the Anti-Lock Brake Systems
SRS (Airbag) - Airbag Systems
TPMS - Tire Pressure Monitoring Systems
Module Coding - Needed when replacing certain modules in the vehicle.
Anti-Theft/Key Duplication - The ability to duplicate a key. Warning, coverage is highly variable. Not all systems are supported. Suggest you contact the Scan Tool manufacturer directly with specific questions.
Entertainment - Radio, CD Player, etc.
Environmental (HVAC) - Tests the Heating and Cooling systems
Reflashing (J2534) - The ability to reflash a module. Needed to update the vehicles systems with new software, or install a new module.
Enhanced Bi-Directional Controls - Turn on lights, control windows as an example. Used to help confirm the operation of various systems.
Reset Oil Lights - Used to turn off or reset “Change Oil” lights
Inspectional Interval Lights - Used to turn off other service lights other than Oil lights.
Electronic Brake Service - Works on vehicles with brake systems that require a scan tool to replace brake pads and perform routine brake service.
Steering Angle Service - Works on vehicles that require steering angle service after an alignment.
Monochrome Display - A Black & White Display
Color Display - A color display
Graphing Capability - The scan tool can display data over time in the form of a graph.
Touch Screen - You use a finger or stylus to control the scan tool.
Built In Printer - There is a printer built in to the scan tool
Uses PC Printer - The printer uses software in the tool or on your PC to print to your PC’s printer.
Records Data - Record data for later playback.
Video Out - Scan tool has a VGA connector you can attach a second monitor.
Wireless Vehicle Connector - Using Bluetooth or other technology, there is no wire from the vehicle to the scan tool
Multimeter - The scan tool includes a Volts and Ohms measurement.
Multimeter Amps - The scan tool has the ability to measure amperage
Expansion Modules Available - The scan tool manufacturer has other options available for this tool.
WiFi Built-in - The tool has a wifi card built in to access your local wireless network
Ethernet Jack - A network connection to the tool.
Limited Browser - A browser that does not support Flash or other popular plugin’s
Full Browser - Internet Explorer that runs on a windows XP, or windows 7 platform.
Free Updates - Just what it means
Integrated Internet Updates - Updates are accessed within the tool.
PC Required - You need a PC to download or install the update
Subscription - You have access to any and all updates for a period of time, generally a year.
Annual Update - The tool is updated one time per year.
Irregular Updates - The tool is updated on a variable schedule. Could be a couple of times per year, or it could be more than a year. Typically tools with free updates are updated irregularly.
This is help on finding problems with the vehicle. What does the trouble code mean, wiring diagrams, etc.
Internet from your computer - The tool has no assistance built in.
Internet from Device - You can access the internet from the scan tool, but here is no built in help for this device.
Embedded Help - There is help built in to the unit in a fashion to help the technician diagnose a vehicle.
Enhanced Data Stream
This is manufacturer vehicle specific data stream information. Typically the most desirable data and the most expensive for the scan tool manufacturer to obtain.