Auto Diagnostics and Codes
VW DSG 02E Transmission: A Diagnostic Pre-Checklist

This particular transmission is frequently powered by a diesel engine.

Diagnosing Secondary Ignition Problems

Kilovolt demand can vary widely according to air/fuel ratio, running compression and spark timing.

Tips For Investing In A New Tire Changer

An extremely busy tire shop that mounts 500 to 1,000 tires per month may get only a few years out of a tire changer.

Drivetrain: Diagnostic Test Drive

Once the vehicle is moving, you might hear a whine coming from the center of the vehicle.

Understanding Five Volt Reference Signals

A 5-volt reference flows through a sensor with a resistance that varies according to changes in temp., pressure or position.

TPMS Diagnostic, Replacement Tips

Using new TPMS tools, you can have several options to replace and reprogram a sensor.

Diagnosing Audi A8 TPMS Issues

These are all the steps you’ll need to pinpoint fault issues in TPMS for 2009-2016 Audi A8 vehicles.

Turbo Tools: Boost Drivability, Diagnostics

The two most important parameters to look at are the desired boost pressure and actual boost pressure during a test drive.

Voltage Drop Testing Is The One Meter Test That Doesn’t Lie

The measurement of voltage is like the speed of highway traffic – when loads are light, the voltage does not drop.

Tech Tip: TPMS Relearn Procedures

Double-check as you go that the steps are done correctly. There are no shortcuts to the relearn process.

Understanding The Function Of Serial Data Buses

Serial data buses help to eliminate multiple sensors and wiring. One sensor can share information with multiple modules without having to connect directly to the multiple modules.

Scoping Ignition Waveforms

The secret to being able to capture and analyze secondary ignition waveforms is understanding what is happening in the coil and at the spark plug and how the scope measures and graphs the voltages and ignition event.