If you are experiencing problems with your 1999 Dodge Durango, the issue may be with your PCM (Powertrain Control Module). The PCM is responsible for controlling various components in your vehicle, including the engine, transmission, and emissions systems. When your PCM is not functioning properly, it can lead to a variety of issues, such as poor performance, reduced fuel efficiency, and even damage to other components in your vehicle.
What is a PCM?
A PCM, or Powertrain Control Module, is a type of computer that is responsible for managing the various electronic systems in your vehicle. This includes the engine, transmission, and emissions systems, and is responsible for ensuring that they are all functioning properly. The PCM receives information from various sensors in your vehicle, and then uses this information to control various components, such as the fuel injectors and ignition timing.
Without a functioning PCM, your vehicle may experience a variety of issues, including reduced performance, decreased fuel efficiency, and even damage to other components in your vehicle. That is why it is important to address any issues with your PCM as soon as possible.
Common Issues with the PCM
There are a variety of issues that can occur with your PCM. Some of the most common issues include:
| Issue | Symptoms |
|---|---|
| PCM Failure | Engine not starting, stalling, check engine light on |
| PCM Software Issues | Check engine light on, poor performance |
| PCM Wiring Issues | Engine not starting, stalling, poor performance |
Wiring Diagram for the 1999 Dodge Durango PCM
If you are experiencing issues with your PCM, it may be helpful to have a wiring diagram to help you troubleshoot the issue. The following is a wiring diagram for the PCM in a 1999 Dodge Durango.
PCM Pinout Diagram
The following is a pinout diagram for the PCM in a 1999 Dodge Durango:
| Pin Number | Color | Function |
|---|---|---|
| 1 | Orange/Black | Transmission Range Sensor Signal A |
| 2 | Orange/Red | Transmission Range Sensor Signal B |
| 3 | Gray/Black | Pump Relay Output |
| 4 | Dark Blue/Black | Gage Sending Unit Signal |
| 5 | Yellow/Black | Vehicle Speed Sensor Signal |
FAQ
What is a PCM?
A PCM, or Powertrain Control Module, is a type of computer that is responsible for managing the various electronic systems in your vehicle. This includes the engine, transmission, and emissions systems, and is responsible for ensuring that they are all functioning properly. The PCM receives information from various sensors in your vehicle, and then uses this information to control various components, such as the fuel injectors and ignition timing.
What are the symptoms of a faulty PCM?
The symptoms of a faulty PCM can vary depending on the issue. Some common symptoms may include engine not starting, stalling, poor performance, decreased fuel efficiency, and a check engine light on.
What should I do if I suspect an issue with my PCM?
If you suspect an issue with your PCM, it is important to have it diagnosed by a professional mechanic as soon as possible. They can use diagnostic tools to determine the cause of the issue and recommend the appropriate repairs.
Can I fix a faulty PCM myself?
Fixing a faulty PCM yourself can be difficult and should only be attempted by experienced mechanics. It is important to have the issue diagnosed by a professional to ensure that the repair is done correctly.
