Nuisance Prevention Circuitry; Troubleshooting - Viper 300 ESP Installation Manual

nuisance prevention circuitry

™
NPC™ requires that you change the way you test the system as NPC™ will bypass an input zone for 60 minutes.
If the system "sees" the same zone trigger three times AND the triggers are spaced less than an hour apart, the
system will bypass that input zone for 60 minutes. If that zone does not attempt to trigger the system during
the 60-minute bypass period, the zone's monitoring will begin again at the end of the hour. If it does attempt
to trigger while bypassed, the 60-minute bypass starts over again.
Disarming and rearming the system does not reset NPC™. The only way to reset NPC™ is for the 60 minutes to
pass, without a trigger, or for the ignition to be turned on. This allows the system to be repeatedly triggered,
disarmed and rearmed, and still allow NPC™ to bypass a faulty zone.
When disarming the system, 5 chirps indicate NPC is activated. The LED will report the zone that has been
bypassed. (See Diagnostics section of this guide.)

troubleshooting

I Starter kill does not work:
Is the correct starter wire being interrupted? If the car starts when the starter kill relay is completely discon-
nected, the wrong starter wire has been cut and interrupted.
Yellow wire is not connected to true ignition. It is connected to an accessory circuit.
I Shock sensor does not trigger the alarm:
Has the NPC™ system been triggered? If so, you will hear five chirps when disarming. To check this, turn the
ignition key on and off to clear the NPC™ from memory, and then retest the shock sensor. For a detailed descrip-
tion of NPC™, see Owner's Guide.
I Door input does not immediately trigger full alarm. Instead, I hear chirps for the first three seconds:
That's how the progressive two-stage door input works! This is the instant response feature of this system. Even
if the door is closed immediately, the system provides an instant trigger by chirping, and then progressing to a
constant siren.
I Closing the door triggers the system, but opening the door does not:
Have you correctly identified the type of door switch system? This happens often when the wrong door input has
been used.
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© 2000 Directed Electronics, Inc. Vista, CA