Help locating crank position sensors on 2011 cm2250?

[jimeneztrans84]

Just got code for crank position sensors and dealer is saying there's 2 for 2011 cm2250. Anyone know the location on both of them? Thanks

[Nilao]

one is right behind the harmonic balancer on the drivers side, kind of sandwiched between the air compressor and harmonic balancer. the 2nd is actually the cam shaft sensor. It's up top beside the engine brake harness plug. The ecm will default to it IF the crank shaft sensor loses reference....kind of like a redundant sensor.