My tilt sensor is triggering at night!

I have been watching my car the past few days because my car alarm goes off at night. In the morning I do the zone intrusion check and the flashes indicate it's the impact/optional sensor. I have the OEM 2 zone shock sensor connected with the 2 zone motion sensor which I have off and the tilt/motion sensor and a glass sensor connected on the optional sensor wire. They all have diodes to isolate them. I have reduced the sensitivity of the tilt sensor to normal tilt and low motion but it still goes off. The alarm seems to work fine if I unplug the sensor but I have to test that tonight. Can a bad diode do this? Is it the temperature change? Please point me in the right dirrection with this. Thanks. BTW the tilt sensor is the DEI electronic tilt/motion sensor model 570TI have no idea what I am talking about..I'm I talking?

It's either, the sensor is messed up, a diode went bad...or the temperatur change...But the temp changes haven't been that radical lately to cause it...replace the diode..if it still goes off...REplace the sensor...if it still goes off...take the sensor out...if it still goes off....time for a shop to look at itĐễẳ†ђş 12\/ Ĵęśŧē®™