- Open the hood of the Ford. Loosen the lock nut located on the negative battery cable connector with a socket and ratchet. ...
- Wait for 20 minutes while the PCM bleeds off the electricity it stores for backup power. Once the power drains from the PCM, it resets.
Can you reset a bad PCM?
You can either reset your FORD PCM through the fuse box or the simple yet effective way that is to just unplug the battery.
How do I reset my PCM?
- Open the hood of the vehicle.
- Disconnect the negative battery cable from the battery. Use a wrench to loosen the lock nut, and pull the cable off. This cuts the power to the PCM. Wait for five minutes.
How do I program my new PCM key?
PERFORMANCE REPROGRAMMING A PCM Reprogramming is usually required after installing an aftermarket performance cam, bigger cylinder heads, a different intake manifold or fuel induction system to compensate for changes in airflow.
What is Ford PCM reprogram?
Powertrain Control Module reflashing is essentially a software upgrade . PCMs are built with microchips that can be reprogrammed electronically without being removed from the vehicle.
Can you fix a PCM?
PCMs are not rebuilt in the same way that alternators and water pumps because there are no mechanical parts that wear out. Remanufacturing in this case usually means testing the computer, isolating and repairing any faults that may be found, then retesting the computer to make sure everything works correctly.
Does a PCM need to be reprogrammed?
You will simply have to take your car to the dealership and set aside some time for them to make the updates. But if you purchased a used PCM as a replacement (usually from a vehicle that was totaled in an accident), you will need to have it reprogrammed for it to be able to work with your vehicle .
Do you need 2 keys to program a PCM?
ACTUAL PRODUCT MAY VARY. Your vehicle has the Passive AntiTheft System (PATS) which requires two keys to be programmed to a replace- ment ECM/PCM in order to start. This requires a scan tool with capability to program PATS type E keys.
What do you need to flash a PCM?
Reflashing PCMs requires three things: a scan tool or J2534 pass-through device that is flash capable , a Windows laptop computer (Most require Windows 7 but some older applications may require Windows XP) with an internet connection for downloading the flash software from the vehicle manufacturer website (Click Here ...
Can I program a car key myself?
You can't, for example, take a remote for your old car and program it to your new car even if they are the same make and model. With newer cars, most likely you will not be able to program a new key yourself. You will have to visit a dealer or locksmith .
What are signs of a bad PCM?
- Your ‘Check Engine' Light is On. ...
- Your Car Won't Start or Starts Roughly. ...
- Sudden Loss of Gas Mileage. ...
- You Failed Your Emissions Test. ...
- Your Engine Stutters or Stalls. ...
- Erratic or Random Shifting. ...
- You're Receiving a PCM-Related Error Code. ...
- What to Do If You Experience PCM Failure Symptoms.
How do you test a PCM?
You need to check the sensors that are connected to your PCM , as well as the wires that connect them. If you're seeing a PCM code – or two, or three – it can really help you narrow in on which sensors or wires are faulty. Perform a visual inspection of these wires, as well as checking them with a multimeter.
How much does a PCM update cost?
In some cars, there are multiple computers, and with other cars, there are just a few. The PCM controls more than 100 factors in your car, and for that reason, is very important – and expensive. A typical pcm replacement cost comes to between $500 and $1,500 on average .
Can I drive with a bad PCM?
Bad PCM shouldn't be a cause for worry, though, and many states allow drivers to pass checks despite the engine light is on. Nonetheless, the sooner you fix it, the better your engine will perform and you can also protect other parts and systems that could get compromised.
Will a bad PCM throw a code?
The PCM should give you a code for P0600 through P0606 indicating that the computer has a processor error. However, if the PCM is corrupt, then just like a desktop computer, there is no accessing anything and no codes are put out for the computer would have no way of sending a signal.
Is it hard to replace a PCM?
Replacement of the PCM is not very common, but when your Vehicles is diagnosed with a failing PCM it's important to replace it immediately to ensure the Vehicles continues to operate. ... You can replace the PCM without the help of a mechanic , but you must first purchase the correct PCM Vehicles your car.
