Auto Diagnostics and Codes
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.

Driveline Tech Tip: Clunk Or Knock

Some vehicles with rear-wheel drive and may exhibit a driveline clunk or bump that occurs as the vehicle starts to move forward following a stop. This condition may be caused by the slip yoke not sliding smoothly on the output shaft splines. Action: Lubricate the slip yoke with a PTFE lubricant or a lubricant specified

Bosch Announces Major Updates In 4.0 Software Release For ADS Diagnostic Scan Tools

ADS 4.0 introduces many new and improved features, including faster scanning capabilities with Quick-Scan, enhanced European vehicle coverage, access to FCA Secure Gateway (SGW) vehicles and continued free access to Repair-Source.

Navigating Wiring Diagrams To Test Circuits

Wiring diagrams and the correct probes are ways technicians can avoid scarring a vehicle for life.