Auto Diagnostics and Codes
TPMS Sensor Signals

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

Listen Better to Improve Repair Shop Diagnostic Skills

Great service advisors focus 100% on the customer’s complaint and ask “when” and “where” questions.

Air Management For The FSI V6 And V8 Engines

The FSI 3.2 L V6 & 4.2 L V8 have a lot in common with the FSI 2.0 L four-cylinder engine, including carbon deposit problems.

Ford Illuminated Malfunction Indicator Lamp

Replace the crankcase pressure sensor/tube assembly and reprogram the PCM.

Lost Or Stolen Key GM Vehicles

If the customer has requested to have the keys changed to a different key cut, use the procedure provided.

Ford Power Steering Inoperative After Collision Damage Repair

Here are the case details behind a message center displaying a “STEERING LOSS STOP SAFELY” warning message.

FORD Explorer High-Speed Cooling Fan Motor RELAY Overheating

A damaged non-functional relay, causing the fan to never turn on may lead to engine overheating at idle.

Ignition And Coil Flashover

If you see carbon tracking or “flash over” on a spark plug, boot or coil, it is not normal.

Fuel Injector Wave Forms

Diagnosing a fuel injector circuit with a scope can help you to confirm the health of the drivers and injectors.

Ford: Permanent Diagnostic Trouble Codes (DTC’S)

A Permanent DTC can only be cleared by the module strategy & cannot be erased by clearing with a scan tool.

Ignition Diagnostics

This part of the cycle is when the mixture of air and fuel ignites and how the flame front spreads in the cylinder.

Fuel Injector Waveform Diagnostics

On the majority of injectors, an electromagnetic coil is energized by a driver in the engine control module.