To troubleshoot a code 65, you'll need to systematically check several areas:
* Power Distribution Center (PDC): This is your main fuse and relay box, often located under the hood. Check all relays within the PDC, focusing on those related to major systems (ignition, fuel pump, etc.). Look for any burned-out relays, loose connections, or corroded terminals. A visual inspection is crucial. You'll need a wiring diagram for your specific truck to know which relay controls what.
* Ignition Switch: A faulty ignition switch can prevent power from reaching certain circuits, triggering the code.
* Wiring Harnesses: Inspect the main wiring harnesses for any damage, chafing, or broken wires, especially those leading to and from the PDC.
* Battery and Connections: Ensure the battery terminals are clean, tight, and corrosion-free. A weak or failing battery can also manifest as this type of code.
You absolutely need a wiring diagram for your specific 2000 Dodge Ram 2500. This diagram will show you the location of all relays and fuses within the PDC, and the circuit paths they control. You can usually find these diagrams online through forums dedicated to Dodge Ram trucks or by purchasing a repair manual specific to your vehicle's year and model.
Without a wiring diagram, attempting to troubleshoot this code is extremely difficult and potentially dangerous. Incorrectly diagnosing and fixing this could cause further damage. Consider taking your truck to a qualified mechanic for diagnosis and repair if you're not comfortable working with automotive electrical systems.
