diagnostics Archives - Tomorrows Technician
High-Pressure GDI Fuel Pumps

When solving a fuel pump issue, the scan tool is your best friend.

Diagnosing Driveability Problems

Understanding what comes out through the exhaust valve is critical to solving any emissions or driveability problem.

Ball Joint Inspection

It’s important to remember not to miss a worn joint. If a ball joint fails, the driver loses control of the vehicle.

Freeze Frame Diagnostics

Freeze frame data is a “snap shot” of when the code occurs of the specific sensor PIDs.

Electric Power Steering Diagnostics

Load management for steering systems.

TPMS Sensor Signals

TPMS sensor signals are low power and low frequency, with most sensors transmitting at 315MHz or 433MHz.

ABS Diagnostics

ABS is the foundation of the ESC system.

Knock Sensor Diagnostics

The knock sensor is not the only sensor responsible for detecting engine knock.

Checking The Auxiliary Water Pump

A car or truck comes into the shop with a complaint of poor heater performance. The issue may be the auxiliary water pump.

Tech holds up heater core
Manual Clutch Repair and Diagnostics

If the clutch gets too hot from excessive slippage or loading, the linings may burn, damaging the clutch.

Fuel Pressure Diagnostics

Direct injection pressure is measured with sensors, and the signals are used to determine pump speed and/or volume.

Diagnostic Procedures For Stop/Start Systems

Stop/start technology is more than just a switch wired to the brake pedal and starter.