Bulletin: *SD70M-2*


The SD70M-2 is a DC traction version of the SD70ACe, and the two models are nearly identical in every other respect. Production commenced in 2005. Like the SD70ACe the SD70M-2 models are equipped with the 16-710G3C-T2 prime mover which is rated at 4,300 horsepower. One of the main differences in the SD70M-2/SD70ACes from previous SD70s is the addition of Air Start. This loud burst of air in the start sequence is not present on most earlier EMD locomotives. All SD70M-2s and SD70ACes, except for the ones bought by CITX, are equipped with the Airchime model K5LLA air horn and an electronic bell.

Key Function Soundslots Volume CVs Volume value
LightDirectional Headlights
F2Playable Airhorn3275128
F3Coupler Clank5291128
F4Dynamic Brake6299128
F5AUX3 output (pre-set to Mars Light)
F6AUX1 + AUX2 (Ditch Light)
F7Switching Mode
F8Sound (On/Off)1259128
F9Diesel Manual Notching (Up)
F10Diesel Manual Notching (Down)
F11Radiator (Fan) Sound8315128
F12Dimmer (Headlights)
F13AUX4 function output
F14Detector Sound9323128
F15Crossing Communication10331128
F16Rail Clank (works only if F8 is On)11339128
F17Brake Set / Brake Release12347128
F18Sanding Valve13355128
F19Short Air Let Off14363128
F20Compressor7, 15307, 37150, 116
F21Pop Valve Sound15371116