you need a new battery.. takedaily said: you need a new battery.. maybe not....but if the two things i mentioned don't work then yes you do need a new battery. the second recommendation i gave will allow you to reinstall the battery driver...if it gets corrupted your laptop won't charge it. Mar 25, 2013, 7:05 AM.
A power-train control module, abbreviated PCM, is an automotive component, a control unit, used on motor vehicles. It is generally a combined control unit, consisting of the engine control unit (ECU) and the transmission control unit (TCU). On some cars, such as many Chryslers, there are multiple computers: the PCM, the Transmission Control Unit, and the Body Control Module, for a total of three separate computers as an example. These automotive computers are generally very reliable. The PCM commonly controls more than 100 factors in a car or truck.
When you start a car/truck, the knock sensor allows the PCM to adjust timing by sensing pinging or knock immediately. This allows the engine to get the most power out of the fuel you happen to be running.If the knock sensor malfunctions, the PCM just runs a default timing routine (like running 87).etonation can be caused by several factors; low octane fuel, too much spark advance, or a lean fuel mixture. The knock sensor will send a signal back to the PCM (power control module) to lower advance and/or enrichen the fuel mixture.