What do you need to know about replacing your PCM?
Close enough isn’t good enough when it comes to replacing PCMs. It must be the correct replacement for the application. Accurately identifying the PCM requires not only the vehicle year, make, model and engine size, but also the OEM part number on the PCM itself. Most supplier’s catalogs list replacement PCMs both ways.
Can a PCM be installed in the same car?
Many PCMs appear to be exactly the same on the outside (same sized box and connectors) but may be wired or calibrated differently inside. If the wrong PCM is installed in a vehicle, it may run but probably won’t run well. Close enough isn’t good enough when it comes to replacing PCMs. It must be the correct replacement for the application.
Can a PCM be repaired after a flood?
Most remanufacturers won’t even attempt to repair a PCM if the vehicle it came out of was submerged in a flood. Replacement is the only option. Thermal stress and vibration can form microcracks in circuit boards (which are repairable).
What are the components of a FCM implementation?
An FCM implementation includes two main components for sending and receiving: A trusted environment such as Cloud Functions for Firebase or an app server on which to build, target, and send messages. An iOS, Android, or web (JavaScript) client app that receives messages.
When to replace your PCM ( and when not to )?
The onboard computer is the brains of the engine control system, so when the brain isn’t functioning correctly neither is the engine or anything else that the microprocessor controls – which may include the charging system, transmission, various emission controls and communications with other onboard control modules.
What are the signs of a failing ECM?
Common signs of a failing PCM/ECM/ECU include the Check Engine Light coming on, engine performance issues, and the car not starting. 1. Check Engine Light Turns On 2. Engine Stalling or Misfiring 3. Engine Performance Issues 4. Car Not Starting
What does Dodge says I need a new FCM module?
Dodge says I need a new FCm module. What is this and what are… My 2004 Dodge Durango was broken into and the immobilizer antenna was broken along with a few fires from the ignition switch. Can a junkyard … read more
Can a dealer diagnose a failed FCM module?
The dealer has a scan tool (StarScan) that can diagnose the FCM’s inputs and outputs. If the dealer diagnosed it as a failed FCM, then it probably is. If for some reason replacing the FCM does not fix your problem then the dealer needs to stand behind their diagnosis and repair and then re diagnose the issue for free.
How long does it take for security light to turn off?
Insert ignition key and turn to the “ON” position. Do not attempt to start the engine. Leave the key in the “ON” position for approximately 11 minutes. The security light will be steady on or flashing for the 11-minute period. Do not proceed to Step 2 until the security light turns off or stops
How to turn on security light without starting engine?
Turn key to the “ON” position without starting the engine. Security light should turn on and stay on. Turn key to the “ON” position without starting the engine. Security light should turn on and stay on. Turn key to the “ON” position without starting the engine. Security light should turn on and stay on. Turn key to the “OFF” position.
What to do when your PassLock security light goes out?
The Body Control Moudle should re-learn the security signal, and the “SECURITY” light should go out. When it does, Turn the ignition OFF for five (5) seconds, and then try to re-start the car. The “SECURITY” light should remain off this time, and the car should keep running. If not, don’t give up.
What happens when you replace the PCM in a car?
After replacing the PCM, the engine may crank and even fire initially, but die almost immediately. Certain Ford vehicles incorporate the Passive Anti-Theft System (PATS). This security feature immobilizes the vehicle by disabling the fuel pump, injectors and possibly the starter, until the ignition key relearn is performed on the car.
What does the security feature on Ford PCM do?
This security feature immobilizes the vehicle by disabling the fuel pump, injectors and possibly the starter, until the ignition key relearn is performed on the car. Motorcraft Service provides a reference chart that identifies all Ford PATS vehicles.
What should I do if my PassLock security light goes off?
If nothing happens or the engine starts and dies, the security light will be flashing. Wait ten minutes. The flashing light should go off or illuminate without flashing. When it does, turn the ignition off, wait twenty seconds, and then try to start the engine. If it starts and runs, everything is okay.
Insert ignition key and turn to the “ON” position. Do not attempt to start the engine. Leave the key in the “ON” position for approximately 11 minutes. The security light will be steady on or flashing for the 11-minute period. Do not proceed to Step 2 until the security light turns off or stops