Parasitic Current Draw
AVI teams up with Delphi instructor and electrical mastermind, Dave Hobbs to bring you the most comprehensive class on parasitic battery drains
Battery Drains Tech Tip
Parasitic drains can be measured with ammeters with the battery cable. Now the problem with taking the battery cable off to install the ammeter is that, sometimes electronic modules are the source of the parasitic draw. In this technical tip clip instructor Dave Hobbs talks about some other tricks for diagnosing these problems. He talks about the class two message monitor– a feature available on the Tech Two and also the Master Tech– it basically tells which module’s active and which module is inactive. He also goes on to cover using a parasitic draw tool in order to not disrupt the circuit while using an ammeter. Watch this clip to learn how to use the class two message monitor and or a simple knife switch that can actually be used for some neat tricks in diagnosing some stubborn, hard to find, parasitic battery drains.
Tech Tip: Sign of Low Refrigerant
Join Dave Hobbs of Delphi Product and Service Solutions as he discusses some signs of low refrigerant in moodier automotive AC systems. He goes on to discuss how environmental factors such as ambient air temperature, and the AC system’s ‘cycling switch can cause low refrigerant like symptoms.
A4 Alignment Basics Tire Wear Tip Clip
In this short video clip from the A4 Suspension and Steering class, Delphi instructor Dave Hobbs discusses and shows some basic tips and knowledge to help you better diagnose alignment issues based on tire wear helping you more quickly and accurately use the alignment machine to put everything in spec.
A4 Power Steering Fluid Check & Maintenance Tip Clip
Watch this tip clip excerpt from the A4 Steering and Suspension ASE Test prep course presented by Dave Hobbs. Dave talks about proper testing and maintenance of power steering fluid and related components–showing examples and highlighting the things you should know both as a technician and to pass the ASE A4 certification test.
FRED Kicks the CAN
Watch the hands-on training action from instructor Dave Hobbs, and learn all the latest tricks and kick that CAN bus problem right out the door!
CAN Data: Class-2 Loop Configuration Tip
Check out this technical tip clip on CAN Data with Dave Hobbs. In this clip Dave talks about Class 2 layouts, specifically the ‘loop configuration’ systems. He breaks down the layout of theses systems in an easy to understand manner and talks about how the modules communicate on this type of system as well as how they are electrically wired.
Victory Over Voltage Drops
With Dave Hobbs and AVI, you can learn to diagnose voltage drops in a simple and effective manner to transform frustration into profits for your shop.
FREDS Tech Tip: SCI Interface FKTC
In this tip clip, Dave Hobbs talks about what to do if you have a vehicle with no PCM data. You plug in your brick, and you go to pull codes or look at PIDs in this late 90s, whatever, early 2000 Chrysler. It’s got CCD. You think you’re talking on the CCD. You’re actually talking on SCI, and scan tool just sits there and says no communications. What could the problem be? Is it a bad scan tool? Bad computer? Bad bus wires? Well, in this clip Dave gives some quick pointers on what to look for next.
FRED Kicks the CAN: Chevy Malibu FKTC Tip Clip
In this case study with Dave Hobbs, we learn about the complexities and challenges of diagnostics of data bus systems. Dave talks about a Chevy Malibu he once worked on: it couldn’t start several modules. He talks about how, sometimes, bus issues can be things you would never suspect and how keeping up with learning about these systems and understanding their complexities is necessary if you want to work on cars with these problems.
