OBD II Diagnostics: Checking into Mode $06
In this scan tool diagnostics article, we take a look at Mode $06 functions which govern non-continuous monitors (EVAP, catalyst, EGR, etc.)
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
News: Babcox Publications Acquires Fleet Equipment & T3 Magazines
cations for the automotive aftermarket to now include the truck fleet equipment management and information technology (IT) arenas. These respected magazines, and their editorial staffs, broaden our reach and offer outstanding publications for the marketplace.” Each month, Fleet Equipment targets an audience of qualified fleet equipment managers who are directly responsible for specifying and buying
Diagnostic Dilemmas: The Effects of Warm-Up Laps on a Running Engine
Most diagnostic technicians have experienced the frustrations of troubleshooting temperature-related engine performance problems. All too often, the true nature of the problem is concealed by the very fact that it occurs only at specific engine temperatures. If the engine quickly passes through the critical temperature range needed to duplicate the problem, the problem can easily
The Origins to a Breakdown
It’s interesting to see the look on a technician’s face as a vehicle gets towed into a shop on the back of a truck. That’s the opening scene for a no-start problem. You can usually tell when a technician thinks it’s good, and you can definitely tell when he thinks it’s bad. Not many techs
Why Go Digital? For Precision and Protection
These days, no matter what kind of automotive repair work you specialize in, virtually every system has a certain amount of electronics. Consequently, one diagnostic tool every technician needs is a digital multimeter. To figure out electrical and electronic problems, you have to “see” what’s going on inside the circuits and components. Trouble is, you
Checking into Mode $06
Mode 06 is the actual system test data that OBD II looks at when it decides to set a pending code or a current fault code. If the test data is within the limits established by the vehicle manufacturer, the item gets a PASS and no codes are set. But if a value is out of range, OBD II flags it with a FAIL and keeps an eye on the component until the system monitor has run at least twice. Then, if the problem is still there, a DTC is set and the MIL light comes on.
Aftermarket Update: Lighting Problems Top Recent GM Recalls<
General Motors Corp. will recall nearly 1.7 million vehicles in North America, including nearly 1 million sport utility vehicles, to fix tail lights that could loosen and flicker. According to the U.S. National Highway Traffic Safety Administration, (NHTSA), GM said in early November it will recall 946,817 SUVs, which would include 2002 to 2004 model-year
OHC Engine Repairs and Service on Chrysler’s 3.5L V6
Chrysler’s 24-valve 3.5L single overhead cam V6 engine was introduced back in 1993 in their LH platform cars (Chrysler Concorde, Dodge Intrepid and Eagle Vision). Since then it has been used in a variety of Chrysler models. The 3.5L engine is an even-firing power plant with aluminum cylinder heads, a single camshaft in each cylinder
A Tutorial in Hyundai Driveability
Diagnosing a driveability problem starts with the customer interview. When you are able to obtain the proper details about the vehicle’s symptoms, you will be able to diagnose the source of the problem more efficiently. Clues provided by the customer, such as “vehicle starts but runs rough until warm; worse when wet,” is invaluable information