Can alarm disable fuel system?
Yes, it is more commonly used on diesel powered vehicles.
To disable the alarm system on the 2002 Honda Odyssey, just use the key fob to turn the system off. You can then use your vehicle's manual to learn how to disable the passive alarm system. This generally involves a series of steps that include turning the ignition key on and off and honking the horn.
The most common cause is that the rechargeable battery in the alarm siren is failing, giving a low voltage to the alarm system. When the voltage from he battery drops below a certain level the alarm system thinks someone is trying to disable the alarm by disconnecting the battery. As it thinks someone is trying to disable the alarm, it sets the alarm off.