Vision 1480 Series Owner's Manual page 18

TROUBL ESHOOTING
CANNOT DISARM WHILE THE SIREN IS SOUNDING
Ensure all doors & trunk are closed, then try to Unlock to Disarm.
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SHOCK SENSOR 1st STAGE "WARNING" TRIGGER DOESN'T WORK
Examine the shock sensor and look closely at the two LEDs.
If you never see Green light, adjust the sensitivity knob on the sensor.
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If after increasing sensitivity you still don't see the Green LED, it
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could be that the suspended element inside the sensor body was shifted
out of place. See page 15 in the Install Guide on how to resolve this.
If you do see a Green light, the sensor is functioning properly. That
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means there is like a wiring problem. Check that the sensor wire har-
ness is properly connected at both ends.
FULL SIREN BLASTS WITH ONLY LIGHT IMPACT TO THE VEHICLE
Turn down the shock sensor sensitivity.
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If you also have an optional Ultrasonic sensor installed along with the
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shock sensor, it is very likely that the main body of the ultrasonic sen-
sor (not the 2 emitters) was placed too close to the shock sensor. The
main body of the Ultrasonic sensor should be placed more than 30cm (1
foot) away from the shock sensor to avoid interference.
HOOD TRIGGERS SIREN BUT TRIGGER MEMORY REPORTS DOOR & HOOD
Some Mercedes and BMW cars send a digital "door open" message on
the CAN when the Hood is opened. On these cars, if the 1480 is Armed,
the siren will trigger when the Hood is opened, even if the 1480's Gray
wire is not connected to an optional Hood pin switch. But in this case,
Trigger Memory will report a Door Open trigger, not a Hood trigger.
However, if you purchase an optional pin switch and connect the 1480's
Gray wire to it, Hood triggers will then report as both a Hood and a
Door trigger on the Status LED on some Mercedes and BMWs. You may
also see the Door and Hood icons on the LCD pager, if you purchase the
optional Paging System.
On cars where there is no digital CAN message sent when the Hood is
opened, a Hood open condition will not trigger the siren on those cars
unless you purchase an optional Hood pin switch and connect the 1480's
gray wire to it. In this case, Trigger Memory and the LCD Pager will
report only a Hood trigger via the Gray wire.
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