Ni 9437 always "on"

Hello,

I have a cDaq 9178 with some module. All of my modules works well except one, the NI 9437. it is a module with 8 DI.

When i connect it on my chassis, the Leds of the modules are always on, so when I launch my application on labview, I have always my Inputs on even when I have nothing connected to my module.

Someone know why ? 

I installed the last version of the driver, and I use labview 2014.

Thanks a lot.

Mehdi