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About samtech1214

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    Head Tech working on Mack LEUs MRs MRUs LEs

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    03 RD690 03 RD69P Ten 05 MR688S 2 05 CH's 03 LE600S 07 Granite 917 11 LEU 11 LEU 13 LEU 08 LEU 08 LEU 88 B 02 Ford f-250 06 Dodge 1500 02 Sterling 01 Sterling Condor 07 Int. DT466e 05 Hino 11 Int. MAXX Force Dt 466 02 Int. DT466E 2012 Freightliner M2

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  1. I have a Mack LEU that the Mack Dealership couldn't fix, on a pretty new truck. After the Variable Geometery Turbo (VGT) failed we had a new code pop up. Data-link J1939 Can 2. Tech Tool said ACM offline due to J1939 Can 2 missing signal. The ACM was tested and works fine. the Turbo was installed correctly and calibrated. we tore apart the wiring harness for the ACM no faults were found. We checked all fuses. followed the twisted yellow and green Can 2 wires. We also broke open the sealed engine wiring harness by the turbo and it was normal as well. I need locations for the Terminating resistors. but also We found engine oil wicking to the ECU would this be the fault, or do i need to trace the entire J1939 circuit? any help is worth it thank you. Replaced the Batteries as well
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