What is ECM and TCM?
ECU (Engine Control Unit) / ECM (Engine Control Module) – This is an electronic control unit that manages the engine only. TCU (Transmission Control Unit) / TCM (Transmission Control Module) – This is a control unit that manages the transmission and associated sensors, switches, actuators and solenoids.
Is ECU and ECM the same thing?
The ECU is your car’s main computer. The engine control unit (ECU), also commonly referred to as the engine control module (ECM) or powertrain control module (PCM), is one of the most important components found on virtually all modern vehicles.
Where is the transmission control module located on a Jeep Commander?
Welcome to Just Answer Jeep my name is Mark. The TCM or Transmission Control Module is incorporated into the PCM on your Jeep. The PCM is attached to the right-front inner fender located in the engine compartment.
Where is the TCM on a 2005 Jeep Grand Cherokee?
The NAG1 transmission (used with 3.7, 3.0 diesel, and 6.1 engines) have a separate TCM located under the dash near the steering column. The 4.7 and 5.7 engines have the TCM integrated with the engine computer (PCM).
Where is the PCM located on a 2006 Jeep Grand Cherokee?
The 2006 Jeep Grand Cherokee is usually located in the engine bay on the driver side, on the firewall or near the battery.
Where is the TCM located on a 2004 Jeep Liberty?
The 2004 Jeep Liberty transmission control module can be found on the top of the transmission housing with wiring that goes to it. It is a small black box that has a wire harness if You are looking for it.
Where is the transmission control module on a 2003 Jeep Liberty?
This is mounted under the hood on the passenger side of the engine compartment.
What does the final drive control module do?
Final Drive Control Module detects excessive voltage fluctuation on the Mode Sensor Signal circuit.
Where is the TCM on a 2003 Jeep Liberty?
On my 2003 Jeep Liberty (steering wheel on the left) the TCM was under the hood, on the passenger side, about 9 inches from the top, and centered from front to back.
Where is the PCM located on a 2005 Jeep Liberty?
The location of the PCM is in the engine compartment in the back right near the battery. Before we start, make sure to do this to ensure safe replacement. Turn off the ignition key and disconnect the negative battery cable before unplugging the PCM connectors.