Cummins

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A bench harness is useful when a Cummins engine shows signs of an ECM issue: no communication with your scan tool or laptop, a no-start condition, intermittent shutdowns, or persistent fault codes. Connecting the ECM on the bench lets you power it up, verify communication, and test the module off the truck to confirm whether the ECM itself is the problem before reinstalling it.

 

Each Cummins ECM platform needs its matching bench harness. Choose the one for your ECM:

Celect / Celect Plus: N14, M11, L10
CM550: ISB, QSB (1999–2002)
CM570: ISX, ISM (1998–2002)
CM870: ISX, ISM (2002–2006)
CM871: ISX, ISM (2007–2011)
CM2150: ISB6.7, ISC, ISL (2007–2009)
CM2250: ISX15, ISX12, ISB6.7, ISL9 (2010–2012)
CM2350: ISX/X15, ISB6.7, ISL9 (2013–2017)

If you are not sure which platform your ECM uses, contact us before ordering.