CAN Archives - Page 3 of 3 - UnderhoodService
Mode $06 Diagnostic Update

Mode $06 has been around since the introduction of second-generation onboard diagnostic (OBD II) systems back in the mid-1990s. Essentially, Mode $06 is the raw test data the OBD II system uses to evaluate the operating status of various components in the engine management and emission control systems

Downloading Repairs

Have you looked at technical service bulletins lately? Especially ones for vehicles built since 2004? The fixes have changed drastically. I remember a time, not too long ago when the fix in a typical TSB was to install an updated part. From where I stand now in a Ford dealership, it seems like the hardware

ReFlashing Control Modules

You don’t have to be Microsoft A+ certified to flash reprogram automotive PCMs, but the process requires a certain amount of know-how as well as special tools and access to the latest OEM software upgrades. What’s more, it’s not a risk-free endeavor. Certain precautions must be undertaken before you begin, and there are pitfalls that

Update On CAN Diagnostics

Whether you like it or not, Controller Area Networks (CAN) have taken over. CAN technology has been steadily creeping into more and more new vehicles since it first appeared in 1992 on certain Mercedes-Benz models. Thanks to federal emissions rules, it is now required on all 2008 model year vehicles, and will be forevermore. What

Mercedes: Addressing MIL Issues

‘Systems Operation’ Knowledge and Proper Equipment Saves Diagnostic Time and Speeds Repair Process It may not be a Mother-in-Law light, but the effect can be about the same. Just when you don’t want to see it, there it is! The Malfunction Indicator Light (MIL) has been around for more than 25 years, but since OBD

Predicting Failures

spect that at one time or another, we’ve all had a customer return with a check engine light on with a new fault code that wasn’t there last time they were in. The events probably went something like this: Customer: “You couldn’t see that when you looked at it last time?” Shop: “No ma’am, there’s

Mercedes: Deciphering Driveability Dilemmas

As the oldest surviving automotive manufacturer on the planet, Mercedes-Benz has developed a reputation for superior engineering and quality. Models with new features and mechanical developments have been consistently introduced for more than a century. For the automotive technician, this line of vehicles has been a source of never-ending education. Innovation after innovation has challenged

Troubleshooting MIL Issues: OBD II & “CAN” Scan Tool Diagnostics

The Malfunction Indicator Lamp (MIL) is one of the most misunderstood warning lights on vehicles today. Most motorists have no idea what the light means or why it’s on. Some think the MIL light is an oil change reminder light. Others realize something must be amiss to cause the light to come on, but don’t

Diagnostics Through CAN Networks

Since model year 2003, a growing number of domestic and import vehicles have been built with a new onboard communications protocol called CAN (Controller Area Network). CAN is essentially an engineering standard for how computers and modules talk to one another via the serial data bus in a vehicle’s wiring system. It’s a high speed

The Future of Diagnostics Is In The CAN

Since model year 2003, a growing number of domestic and import vehicles have been built with a new onboard communications protocol called CAN (Controller Area Network). CAN is essentially an engineering standard for how computers and modules talk to one another via the serial data bus in a vehicle’s wiring system. It’s a high-speed standard

Foreign Affairs: Can Your Shop Handle OBD Multiplexing?

“CAN” is the new buzz word in automobile diagnostics. It stands for Controller Area Network and is a protocol for onboard diagnostics and scan tools. CAN is a high-speed data link that provides more information at a faster rate for better communication between onboard electronics and external diagnostic equipment. Many manufacturers have already started incorporating

Mastering Mercedes Multiplexing

“CAN” is the new buzz word in automobile diagnostics. It stands for Controller Area Network and is a protocol for onboard diagnostics and scan tools. CAN is a high-speed data link that provides more information at a faster rate for better communication between onboard electronics and external diagnostic equipment. Many manufacturers have already started incorporating