Alarm Troubleshooting - Viper 790XV Installation Manual

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Troubleshooting

Alarm Troubleshooting

Starter kill doesn't work:
Is the correct wire being interrupted? If the car starts when the starter kill relay is completely
disconnected, the wrong starter wire has been cut and interrupted.
Is the yellow wire of the starter kill relay going to primary ignition? This wire must be powered
in the run and start positions.
Shock sensor doesn't trigger the alarm:
Has the NPC™ system been triggered? If so, you will hear 5 chirps when disarming. To check
this, turn the ignition key on and off to clear the NPC™'s memory, and then retest the shock
sensor. For a detailed description of NPC™, see Nuisance Prevention Circuitry section of this
guide.
If the Warn Away
does not work, check the four-pin harness and verify that the end with the
®
GREEN wire is plugged into the alarm module.
Door input does not immediately trigger full alarm. Instead, chirps are heard for the first 3 seconds:
That's how the progressive two-stage door input works! This is a feature of this system. This is
an instant trigger, remember, since even if the door is instantly closed again, the progression
from chirps to constant siren will continue.
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. See the Techsoft DirectFax to identify the polarity of the door
trigger.
System will not passively arm until it is remotely armed and then disarmed:
Are the door inputs connected? Is the H1/6 blue wire connected to the door trigger wire in the
vehicle? Either the H1/5 green or the H1/7 violet should be used instead. (See wiring diagrams.)
Door input does not respond with the progressive trigger, but with immediate full alarm:
Does the Status LED indicate that the trigger was caused by the shock sensor? (See Diagnostics
section of this guide.) The shock sensor, if set to extreme sensitivity, may be detecting the door
unlatching before the door switch sends its signal. Reducing the sensitivity can solve this
problem.
©
2002
Directed Electronics, Inc.
39

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