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Alarm one beep

hi8ha
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hi8ha Member

hi8ha

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Posted (edited)

1999 996 standard coupe. It is my understanding that when you lock the car and there is one beep, is sign there is an open circuit in regards to the alarm circuit. However, PST2 does not shows any alarm error codes o the Alarm module. Why? What could be the probem. If there is an open circuit, should the Alarm module show error codes?

Edited by hi8ha
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Richard Hamilton Member

Richard Hamilton

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If you look under Input Signals for the alarm control unit, you should be able to see the state of the door/compartments/radio contacts, etc.

Aftermarket radio perhaps?  People often connect the alarm wire to the cage, thinking it is a ground connection, when in fact it needs isolating.

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