Re: Door Locks/Key Fob Followup - Saab 9000 Bulletin Board -

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Re: Door Locks/Key Fob Followup 1 Members Like This Post!
Posted by FDavalos [Email] (more from FDavalos) on Wed, 6 Jun 2018 05:30:00

In Reply to: Re: Door Locks/Key Fob Followup, Rob Randall, Tue, 5 Jun 2018 18:05:26
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The alarm is activated two ways. With the alarm fob and keys. There's a switch in the driver's and passenger's door handle and when you insert the key and turn it ether left or right it sends a ground signal to the alarm module telling it to arm or disarm depending on witch way you turn the key. The alarm module is located behind the passenger's side air vent basically inside the dash board. The alarm module then in turn sends ground signals(lock or unlock)to the central lock relay pack located above the driver's side feet in the dash board which in turn sends alternating 12 volt signals to the motors to ether lock or unlock doors. But this is not your problem. You already established that the alarm and central lock relay are working properly when activated via key only. You're problem is that you can't recreate this with the alarm fob. First determine if the alarm fob has power. With a good fob battery, On the fob when you press the left button you should see a green light come on and when you press the right button a red light. If everything checks out than at the very least the fob is alive. Then determine if the fob is actually communicating with the alarm module. When you press the buttons on the fob and you don't see a change in the speaker led light than the fob is not communicating with the alarm. Keep in mind that when the fob battery is replaced you must stand close to the car and press the lock/unlock button repeatedly(three times)to once again zinc it with the alarm module which is different than programing a fob and yes a tech II is required to program an alarm fob to the alarm module.


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