Question about 1993 Toyota Pickup

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1993 Toyota Pickup Alarm


I have an alarm that the factory put in when I bought this in 93. For the last 8 years or so, I had it in valet mode. Last night, the alarm went absolutely nuts. Without being set, it started going off (which led me to think that the car battery went dead and the alarm was resetting.) Either way, the end result is that the truck won't start...won't even turn over(kill switch??). The headlights are the only thing with power. Tried disconnecting the battery to reset and put in valet mode, however it will not go into valet mode. Basically, I went to just disconnect the alarm. I am mechanically inclined (although in engines, not electrical) so I could probably figure it out with a little guidance. I am not sure what type of alarm it is. I believe I found the brain behind the left kick panel. The brain box has no name on it nut the keypad says MEDUSA. Can you help me please?


Posted by 400pilot on

  • 3 more comments 
  • 400pilot Dec 11, 2008

    In hindsight, that is correct...the dealer put it in. Either way, I removed it yesterday. It wasn't as hard as I thought. However, that wasn't the problem. Turns out that the main 80amp fuse blew. I replaced that and the truck will now turn over but will not start. I am going to check for spark and fuel here in a little bit. I am wondering if something else got fried with that many amps going through the system...

  • 400pilot Dec 12, 2008

    That was it.....thank you.

  • Anonymous May 11, 2010

    Sorry, 15 amp EFI FUSE. Not relay.

  • Anonymous May 11, 2010

    Look to see if your 15 amp EFI relay is blown.

  • Anonymous May 11, 2010

    The MEDUSA is not a factory system. It was installed by the dealer. I would recommend that you elimate it completely.



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Posted on Dec 12, 2008


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