What is PCM on Jeep Grand Cherokee?
What is PCM on Jeep Grand Cherokee?
The Powertrain Control Module (PCM) is the computer that controls most of your Jeep’s essential systems. The PCM controls the engine timing, the fuel to air ratio, the transmission, and the anti-lock brakes, along with dozens of other smaller functions.
How to reset your Jeep ECM ( Engine Control Module )?
Here is a little summary of it , the ECM is the brain of the vehicle and just like everything else you’re going to have to reset it and test it to make sure it’s in a great working condition. To reset your Jeep ECM you’re going to have to follow a couple of easy steps and you’ll be done before you even know it.
How do I Reset my Jeep Grand Cherokee?
Leave all doors closed for about 16 seconds until the Vehicle Security Light on the instrument cluster stops flashing quickly. When the light flashes at a slower rate, this signifies that the system has been reset and rearmed. “2011 Jeep Grand Cherokee Owner’s Manual”; Chrysler Group LLC; 2010
What to do if your Jeep PCM is not working?
As an experienced Electronics Engineer, I have gone the extra step and added the use of a deoxidizer on the connectors, which will protect the connections as well as increase their electrical integrity. I have personally used this cure myself on several Jeeps having been a longtime Jeeper with myfirst being a 76 Cherokee S.
What’s the difference between ECM and PCU in a jeep?
The Jeep Engine Control Module, known as the PCM ( Powertrain Control Module) ECU ( Electrical Control Unit ) or to simply it put the Automotive Engine Computer . Confusing right? If you would like to know more about their differences you can read up on our previous post ” Difference between ECM, ECU & PCM ” which we covered it in details.
How do you reset the ECM on a jeep?
The following sequence is used to reset the ECM or PCM as it is sometimes refered too. 1. Disconnect the battery by removing the Negative battery cable (This will ensure that any possibility of grounding the power side to the vehicle [or yourself – think wedding ring] does not happen.) 2. Disconnect the Positive battery cable 3.
How to reset your Jeep engine control module?
3- Once the time has passed you should now turn the headlights “on” and “off” twice to drain the Engine Control Module from any remaining power. 4- Now plug back in the negative terminal and your Jeep ECM should now be reset. To finish off this post , here are a couple of things you should keep in mind.
How do you reset the computer on a Jeep Cherokee?
Put the key into the ignition and start the vehicle. Verify that all warning lights and service lights have shut off on the instrument panel. Most auto parts retailers will let you borrow their computerized scan tools for free for the purpose of clearing the codes and resetting the computer.
The Jeep Engine Control Module, known as the PCM ( Powertrain Control Module) ECU ( Electrical Control Unit ) or to simply it put the Automotive Engine Computer . Confusing right? If you would like to know more about their differences you can read up on our previous post ” Difference between ECM, ECU & PCM ” which we covered it in details.
