alpine sec 150r major trouble

I have an alpine sec-150 in my 02 Miata. Has been working fine until today...

Alarm was disabled but the car won't start. The battery is fine (I checked). I pressed the valet button to see if I needed to reprogram some feature, and then the system went nuts. Very rapid door locking/unlocking (good thing it is a convertible) rapid chirps and lights blinking, rapid clicking in the ignition.

I had to disconnect the battery to stop this.

Am really stuck. Any advice would be greatly appreciated! Thanx.

Check the ground connection

Some installers will use a self tap screw and this drills the hole to big for a tight fit

check the ground

Hi Mike.

Thanks for replying.

I can find the ground to the siren (very secure) but can not find the main unit or its ground to check for tightness. I've disconnected the battery, and will keep it off over night as recommended by another posting to see if the system resets itself.

We are keeping our fingers crossed. I am afraid that, even if we can get the alarm to shut off properly (reset), will the car be able to start again enabling us to get it to a shop to get the darn thing fixed properly. Here's hoping.

chubbg

Does the vehicle have a manual transmission?   Have you thought about push starting it to get it to a shop?   If you find the alarm brain, follow the ORANGE / Black wire to a relay.  This relay will have 3 other wires connected to it.  Follow the wires and see if 2 of them each to to a WHITE/ Black wire.  If they do, simply connect the WHITE/ Black wires back together.  This should allow the car to start, even with the alarm brain malfunctioning.   To find the brain, follow the siren wire back into the cabin of the vehicle.

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Let's Go Brandon Brown. Congratulations on your first Xfinity Series Win. LGBFJB

Thanks for this. We have an auto transmission, but it was a great suggestion.

Finally found the brain tucked away behind the fuse box, all zip tied to death deep in the steering column. Looks like a rat's nest and damned hard to get at. Beyond our skill set I'm thinking...

We'll call auto club tomorrow and have it towed to a audio/security place for fix or replacement.

Appreciate the help!

g

Thought I'd let you all know the final outcome - could help others another time...

The culprit was not the alarm. It was the battery. Apparently if the battery charge gets too low it triggers the alarm lock. Who knew?

It was a last minute thought before we called the auto club. Tested the battery and sure enough it was pretty much gone. Charged it up overnight and all was well the next AM. I guess the trunk was left open or the dome light on and this drained the battery. No troubles at all since, and the battery is holding a charge just fine.

Phew!

Thanks for all the help
g

Frankly don't insult people with that line "it was the battery who'd have known". It's my first test object when I do call outs. If not the battery I'd have measured voltage at the power entry and the alarm's ground point. The locks recycling should have been the clue.