15K views · 611 reactions |  Diésel ECM Repair Experts Whether your truck won't start, accelerate, or communicate, we can diagnose and repair the problem quickly and efficiently.  We specialize in repairing Freightliner CPC4, Cummins, Detroit, Caterpillar and Paccar ECMs. ️ Follow for more! #ECMrepair #ECMproblems #truckrepair | Oscar Truck ECM | Facebook

🔧 ECM Diagnostics: Method 2 🔧 Discover the second method to diagnose an ECM! Here's an example on a Detroit DDEC III 1️⃣ Connection: We hook the ECM to a bench harness for communication. 2️⃣ Diagnostic Codes: We used Detroit Diagnostic Link and found it has non-volatile memory failure and zero engine hours. 3️⃣ Result: This DDEC III ECM (12.7 Detroit) needs repair—100% confirmed! 🔍 Advanced Testing: I also manually check voltages and inspect signals in our lab for injector or sensor issues us