Cats Pcm Flash Software Protocols Called

If youre not under warranty or using a dealer for tune-ups, your car could benefit from reflashing.

Well help you understand how reflashing works and what your options are, so you can make the right decision for your car and budget.

The first computers appeared in cars during the late 1960s and early 1970s.

Circuit boards had specific roles like regulating fuel injection systems.

It wasnt until the 1980s that microchips and microprocessors became small enough to fit into cars.

They could now control most of the electrical processes of the car, including climate controls, braking systems, and odometer.

Cars are upgradeable and customizable, giving the backyard mechanic incredible control over performance.

Modern vehicles have a set of computers (commonly referred to as modules) that communicate with sensors throughout the car.

Cats Pcm Flash Software Protocols Called

They do this through a system of wires and software protocols called the Controller Area Network, or CAN.

Theyre now standard on all 2008 and newer cars and light trucks.

Its often referred to as the brain of your car because it controls so many functions.

Sometimes ECM or ECU are used interchangeably with PCM, so lets clarify the differences.

TCM functionality has improved over the years, adding input from cruise control, throttle and traction control system.

By combining them, the PCM can better regulate their functions together.

For example, when the PCM changes gears, it can pull back the throttle to shift smoother.

It could include systems like the ones above, or Body Control Module (BCM), Brake Control Module (BCM or EBCM), Central Control Module (CCM), Central Timing Module (CTM), and many others.

The PCM senses and monitors more than 100 factors in a car or truck.

For example, when the cars engine is cold, the PCM adjusts the ratio of gas to be greater than the air.

Once warmed up, the PCM adjusts the ratio to decrease the fuel being pumped in.

When the PCM cant restore these to ideal levels, it will notify the car owner with the check engine light.

A qualified mechanic can understand this error code and make the necessary repairs.

PCMs are built with microchips that can be reprogrammed electronically without being removed from the vehicle.

Reflashing is a process where you electronically transfer approved files from a vehicle manufacturers website using a diagnostic connector.

You might hear the terms PCM programming, PCM reprogramming, PCM flash, or PCM reflash.

Dealers or car repair shops might call it a PCM or ECM reprogramming service.