Mike25tt Posted October 6, 2005 Share Posted October 6, 2005 My aerial won't go up!.......I have an after market double din kenwood cd player fitted (Jap spec).....so ive installed the wave band expander....noticed that the aerial lead wasn't plugged in2 the back of the head unit.....so i put it back in.....job sorted i thought.......wrong!.......The aerial still won't go up. Is it a relay problem? aerial motor / teeth knacked problem?..........If anyone has any ideas, please help! Link to comment Share on other sites More sharing options...
Pete Posted October 6, 2005 Share Posted October 6, 2005 You've connected both the aerial AND the signal wire to tell it to go up? Link to comment Share on other sites More sharing options...
Mike25tt Posted October 7, 2005 Author Share Posted October 7, 2005 Yeh I have..........I will however double check on that!................ Link to comment Share on other sites More sharing options...
chilli Posted October 7, 2005 Share Posted October 7, 2005 Can you hear the motor spinning? You should be able to hear (with engine off) if the motor is running. If not, prob wiring or dead motor, if it is then unscrew and pull the areal out and have a look, might be jammed or teeth stripped... Link to comment Share on other sites More sharing options...
dangerous brain Posted October 7, 2005 Share Posted October 7, 2005 Check to see if you have a voltage at the pins going into the motor when you cycle the ignition. Link to comment Share on other sites More sharing options...
stevie_b Posted October 7, 2005 Share Posted October 7, 2005 Check to see if you have a voltage at the pins going into the motor when you cycle the ignition. ^ What DB said. If you get a voltage, it must be the motor (or the teeth inside) that's knackered. If you don't it must be either the aerial relay, or the that the HU isn't sending the UP signal to the relay in the first place. All relatively straightforward to test. When I plugged my new headunit in, it wouldn't operate the aerial. It turns out that whatever wiring harness had been fitted, it wasn't passing on the aerial signal as required. Autoleads harnesses are the ones to get. There's 2 terminals on the back of the aerial relay that directly control the aerial. When one goes +v, the aerial goes up, when the other goes -v, it goes down. I can dig out the info if you still need it. Steve Link to comment Share on other sites More sharing options...
Mike25tt Posted October 7, 2005 Author Share Posted October 7, 2005 Cheers for the advice ppl. Ive jus checked the motor (can't hear a thing) so ive ripped the lot out so I can check the teeth inside (after my tea!) I will also check voltage 2mor. Funny thing was, that when my gf was searching through stations, I had my thumb over the aerial and I was able to pick up alot of them. Does that mean that the relay is fine? or just that the aerial lead is ok?! .......also, are the aerial motor's from a celica or mr2 the same as the supe? cos Im going to a breakers 2mor an I might as well try it. Cheers, Mike Link to comment Share on other sites More sharing options...
dangerous brain Posted October 7, 2005 Share Posted October 7, 2005 if you dont have a multimeter try using a bulb on a couple of bits of wire to test the input to the motor. Link to comment Share on other sites More sharing options...
Mike25tt Posted October 7, 2005 Author Share Posted October 7, 2005 I do have a multimeter hiding in the garage somewhere. If I cant find it then I will do the bulb trick. I will let you know the outcome 2mor, Cheers for that. Link to comment Share on other sites More sharing options...
dangerous brain Posted October 7, 2005 Share Posted October 7, 2005 Yup if the bulb is a torch one and pops don't worry about it you'll know there is current there Link to comment Share on other sites More sharing options...
Mike25tt Posted October 8, 2005 Author Share Posted October 8, 2005 Just used the trusty multimeter and Ive got no voltage coming through to the aerial motor. Is that the relay at fault then? Link to comment Share on other sites More sharing options...
Mike25tt Posted October 8, 2005 Author Share Posted October 8, 2005 Just ripped the head unit out to locate the aerial relay box and I cant find it. It's a kenwood unit and there is a kenwood black box plugged in2 it. Not sure what that actually does. Any ideas? Link to comment Share on other sites More sharing options...
stevie_b Posted October 8, 2005 Share Posted October 8, 2005 Above the dashboard's double-DIN headunit hole, there are 2 boxes bolted on top of the frame that the HU clips in to. The lower one is beige (I think), that's the aircon control. The upper one (brown) is the aerial relay. The thumb trick probably means the signal cable is OK, although radio reception can be affected by ways you wouldn't even imagine! Link to comment Share on other sites More sharing options...
Mike25tt Posted October 8, 2005 Author Share Posted October 8, 2005 Cheers Steve. I will try and locate the relay 2mor mornin. I will crack this problem eventually! Link to comment Share on other sites More sharing options...
Mike25tt Posted October 9, 2005 Author Share Posted October 9, 2005 There is no relay!!!! Could this have been taken out when the after market head unit was put in? Can't the headunit power the aerial without a relay anyway????? Link to comment Share on other sites More sharing options...
stevie_b Posted October 10, 2005 Share Posted October 10, 2005 I'm not sure if the HU would be able to power the aerial. It's odd that you don't have the relay at all. I can't remember what colour the plug is that goes into the relay box (my dash is apart at the moment too!), but I'm guessing that it's just dangling in fresh air in your dash. There's quite a few wires that go into the relay box (10 ish), and I don't know what the others do. Someone more knowledgeable may be along soon! Link to comment Share on other sites More sharing options...
Mike25tt Posted October 10, 2005 Author Share Posted October 10, 2005 Well it's got me baffled! All I know is that the aerial and signal wire are plugged in2 the head unit. There's no relay about and there are a few plugs dangling about at the back! I can't find anything for them to plug in2 so I assumed it was for the old head unit! It might mean a trip to Mr. T 2mor. Cheers for your help and advice tho Steve. Link to comment Share on other sites More sharing options...
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