🔧 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

🔍 ECM Diagnostics on Detroit Series 60. The truck won’t start and techitian wasn’t getting any communication with ECM. We recieved it for a diagnostic, connected the power supply and communication adapter, but there's still no response, confirming the ECM is faulty. 📉The next step? Open it up to see if the customer wants to repair or replace it. 🔁💡 Got questions about Detroit diagnostics? Drop them in the comments! 💬📲 Follow me for more tips and diesel solutions. #Trucks #ECMDiagnostics #T