Electronics Diagnosis: Toyota Models Find out the latest innovations in scan tool technology, and what your scan tool should be doing for you. More

ECMs Rarely Fail By Themselves CARDONE offers technical advice on the causes of EMC failures. More

Getting The Most Data From Your Scan Tool It's more than likely that many technicians use their scan tools as diagnostic trouble code (DTC) readers rather than as the analytical and testing tools that they really are. More

Diagnosing Mercedes-Benz Low Range Light Flashes, Code P1831 If you receive customer reports in the affected model vehicles of the low range light flashing rapidly (18 times) after vehicle start with fault code P1831 (positioner motor, position sensor or power supply is faulty) in transfer case ECU, do not replace the transfer case motor. More

Tech Feature: Mass Airflow Sensors Are Critical In Today's Engine Management Systems In addition to providing an exact measurement of airflow into the engine, airflow sensor inputs can be used to provide a load-sensing input to the powertrain control module (PCM) to help control the shift points and shift quality of an automatic transmission. More

Tech Tip: Scan Tools Needed for Some ABS, ESC and A/C Service Some new technologies may require the use of scan tools to service them - in unexpected ways. A scan tool may be necessary when servicing vehicles equipped with ESC (Electronic Stability Control), for instance, even with simple service such as an alignment. This scan tool helps perform the steering center calibration, which, if not performed correctly, can result in the vehicle pulling to one side or the other... More

Tech Feature: Cooler 'Heads' Prevail - Pouring Over GM's LT1 Engine and Reverse-Flow Technology The LT1 engine was used in a variety of General Motors models, including 1992-'96 Corvette (Y-body), 1993-'97 Camaro and Firebird (F-body), and 1994-'96 Chevy Caprice and Impala (B-body), Buick Roadmaster and Cadillac Fleetwood (D-body). More

Active Safety Technology: Adaptive Cruise Control, Lane Departure Warning & Collision Mitigation Braking A vehicle that stops itself may sound like something out of a futuristic sci-fi movie, but the technology is here and now. From collision mitigation braking to adaptive cruise control, find out how many of today's next generation active safety systems come into play. More

Nissan Tech Tip: DTC For Variable Valve Timing Control Function On any 1996-2009 vehicle with variable vale timing, if the MIL is on with any of the following DTCs stored: P0011, P0014, P0021, P0024, P1110 or P1135, do not replace the variable valve timing solenoid valve or the sprocket(s) without performing the complete diagnosis indicated in the EC section of the service manual. More

Porsche Engine Diagnostics: Finding Hidden Components and How to Access Them is Half the Battle Porsche has been building engines for decades that will literally fit in a suitcase, but are still able to put out horsepower that rivals many larger engines. Find out how to keep the Porsche Boxster engine running smoothly. More