JNk10 Posted May 31, 2008 Share Posted May 31, 2008 Could someone just tell me what the black box is under my driver seat. It is in a metal clip and has a strap holding it in place. Has alot of electrical wires runing to it - its like a very small ecu. Its a J spec NA Auto btw Link to comment Share on other sites More sharing options...
hiten55 Posted May 31, 2008 Share Posted May 31, 2008 ejector seat ecu Link to comment Share on other sites More sharing options...
JNk10 Posted May 31, 2008 Author Share Posted May 31, 2008 ill move it under the passenger seat then haha Link to comment Share on other sites More sharing options...
Homer Posted May 31, 2008 Share Posted May 31, 2008 A few cars have these, I think a few have suggested they are to do with the TV systems some cars came with. Link to comment Share on other sites More sharing options...
JNk10 Posted May 31, 2008 Author Share Posted May 31, 2008 ahhh i do have a dvd sat nav jobbie under the passenger seat, but sadly no face plate for the alpine tv - previous owner lost it, must be that. Thankyou Link to comment Share on other sites More sharing options...
MRX Posted May 31, 2008 Share Posted May 31, 2008 Found one under mine too. Had some kind of aerial plugged in so i presumed it was part of a factory fitted alarm system or remote doors or something. Ripped it out and all still worked so not really sure... Link to comment Share on other sites More sharing options...
Wez Posted August 26, 2009 Share Posted August 26, 2009 Thread revival, is this what people are talking about, if so, what is it? Link to comment Share on other sites More sharing options...
MRX Posted August 26, 2009 Share Posted August 26, 2009 I'm sure the thing i pulled out was a small metal box, kind of like a small sound amp. Does that thing have a socket that an aerial lead could plug in to? Link to comment Share on other sites More sharing options...
Wez Posted August 26, 2009 Share Posted August 26, 2009 Dont think so, I will double check tomorrow. Link to comment Share on other sites More sharing options...
Kirk Posted August 26, 2009 Share Posted August 26, 2009 thought they were for remote central locking? Link to comment Share on other sites More sharing options...
CarlM Posted August 26, 2009 Share Posted August 26, 2009 I took this out of my car but don't have a clue what its for?! Link to comment Share on other sites More sharing options...
tony666 Posted August 27, 2009 Share Posted August 27, 2009 i think its somethink toyota fitted to do with central locking and alarm dont think all cars have them. Link to comment Share on other sites More sharing options...
Andy Blyth Posted August 27, 2009 Share Posted August 27, 2009 (edited) Been wondering about this box for a while, thought I'd open mine up and see what's inside. It looks a little bit different to Wez's, but with the same (or similar) blue connector: Here's a shot of the inside: The large IC on the bottom right has the part number 75004CU 421 which seems to be a 4-bit micro. The ceramic oscillator next to it (identifier CL) is 4.19 MHz, searching for this frequency reveals it's used in some TV sets. The SIL device at the bottom in the middle has a part number TA8000S, which comes up as a 5V regulator with watchdog. The shielded enclosure at the top only has 6 connections to the rest of the circuitry, the antenna socket to its left is one of those connections. The 2 outer connections of the six are grounds. One of the pins (the rightmost one) goes to the inverting input of the LM2903 comparator IC4 It's also fed via and RC filter to the non-inverting input of the same comparator. I just haven't got the willpower to trace out the other 2 connections - too many passives in the way! I'm not really sure what this is. I would have said some kind of TV tuner, but I don't think there's enough in this box to get to baseband video and audio. Any thoughts? Edit: All the date codes on the ICs are around March 93, which ties in with the manufacture date of my car. This leads me to believe the box has been there since the beginning. Edited August 27, 2009 by Andy Blyth (see edit history) Link to comment Share on other sites More sharing options...
MRX Posted August 27, 2009 Share Posted August 27, 2009 Thats the same doodang i found under my seat Andy. Link to comment Share on other sites More sharing options...
Kirk Posted August 27, 2009 Share Posted August 27, 2009 its for factory fitted alarm and central locking im sure of it.. Link to comment Share on other sites More sharing options...
T2 MSW Posted August 27, 2009 Share Posted August 27, 2009 its for factory fitted alarm and central locking im sure of it.. I think your right dude, central locking control unit. Certainly not missed on mine Link to comment Share on other sites More sharing options...
Kirk Posted August 27, 2009 Share Posted August 27, 2009 lightweight and everything ey mike Link to comment Share on other sites More sharing options...
themodifiedkid Posted August 27, 2009 Share Posted August 27, 2009 I was wandering the exact same thing. I found one under my seat, when i was checking all wiring as I was getting battery drain. I just unplugged it and everything still works fine, although I do have aftermarket alarm systems. So im guessing as said earlier it is factory fitted alarm etc. Link to comment Share on other sites More sharing options...
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