Where is the PCM located on a 2002 Jeep Grand Cherokee?

Where is the PCM located on a 2002 Jeep Grand Cherokee?

We’ll show you how to replace a PCM ECM ECU Module on a 2002 Jeep Liberty. Begin replacing the Jeep PCM of your 2002 Jeep Liberty by locating the module. The location of the PCM is in the engine compartment in the back right near the battery.

What is the difference between PCM and ECM?

Most people, including automobile technicians, confuse the two for each other. The main difference between the two is that the ECM controls specific parts of the engine, regulating and sending commands. While the PCM is used in newer models to control almost all engine functions.

How do you reset the computer on a 2002 Jeep Grand Cherokee?

Jeep Cherokee and Jeep Grand Cherokee 1984-2004: How to Reset ECU

1. Step 1 – Prepare to reset the ECU.
2. Step 2 – Disconnect the battery.
3. Step 3 – Ground positive cable to the negative cable.
4. Step 4 – Reconnect the battery.
5. Step 5 – Turn the headlights on and then off.
6. Step 6 – Turn key to the “OFF” position.

How many miles does it take to reset a jeep computer?

So why is the light still on? Here’s something you probably don’t know: after clearing the car’s computer you will need to drive for about 50 to 100 miles. As you drive your car the computer will monitor all the sensors and register the results.

Does a used PCM need to be reprogrammed?

If a PCM, TCM, BCM or other control module is being replaced on a vehicle, reprogramming may be required to calibrate the new module to that particular vehicle (unless it has been preflashed by the OEM or module supplier).

Is the PCM the same as ECM?

The main difference between the two is that the ECM controls specific parts of the engine, regulating and sending commands. While the PCM is used in newer models to control almost all engine functions.

What does the ECM do on a Jeep Cherokee?

The ECM is your Cherokee’s main computer. Almost all of the essential functions of the vehicle are controlled by the ECU/ECM. The ECM takes all of the data from the various sensors, and uses it to operate the engine in a way that is significantly more efficient than traditionally controlled engines.

Do you carry engine&transmission computers for Jeep model vehicles?

We carry Engine & Transmission Computers for All JEEP Model vehicles. Please call us if you do not see the part you need. If we don’t have it, it doesn’t exist. This item is currently out of stock!

What happens to a car with a bad ECM?

An engine with a bad ECM will often run rough and misfire. The misfire can come or go depending on what is going on with the ECM. It may stall, and not be able to start again, until you turn the ignition all the way off and back on again.