Mitsubishi vehicle electrical system, Oulander Motor4G64 Model 2003 V. Amer

I have problems with the fuel pump, it is not all the time blocks the 24V signal at that time I have no indication of the light of (Chek ing) Failure indicator, but it does not start due to lack of fuel, I take out the pump and try it out of the tank and it works, I install it again and start without problems at 22 days it gives me the fault again, the pascon (filtering) of clean pump, clean tank.
If someone had this fault please help.