I had a short in the gauge cluster harness that would blow the hazard fuse. It has been fixed. But now the horn doesn't work and when I first turn the key the cluster doesn't light up (the various lights like cel etc.) except for battery. The tach doesn't work.
No codes and car runs.

Any ideas on what might be blown?

BTW car is a 90 crx w/b16. I think the main relay is on its way out because the fuel pump didn't prime a few times. I also think the integrated control unit is damaged because the intermittent wipers don't work. Also the ignition switch doesn't seem to give power to the starter - so it is wired to a momentary switch.

Ideas?


Modified by devnull at 4:36 PM 10/13/2004

 

My 91 CRX Si doesn't have intermittent wipers. Yours does?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drdisco69 &raquo;</TD></TR><TR><TD CLASS="quote">My 91 CRX Si doesn't have intermittent wipers. Yours does?</TD></TR></TABLE>

ehh. One setting on the wiper arm moves up once then never again unless I turn it off then on again. BTW, page 16-81 of the shop manual says that the icu controls intermittent wipers. 2+2=4 I guess.

Any idea on the rest of the problems?

 

All ideas welcome. Bump.

 

i know on the some of the newer 94-95 they have an interior fuse that blows and causes the symptons like your describing, so check and see if you have the same fuse, and another idea i might have is the ignition switch might be bad

 

All the fuses that I can find (under the dash and in the main box under the hood) are fine. I will be replacing/testing the main relay and icu shortly.

I was thinking about the ignition switch too. I will look in the service manual to see how to test it. It is bound to be something stupid like an unplugged plug or something plugged into somewhere it doesn't belong.

Thanks. Any ideas welcome - keep them coming. At least it starts up now.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PrettyLude &raquo;</TD></TR><TR><TD CLASS="quote">i know on the some of the newer 94-95 they have an interior fuse that blows and causes the symptons like your describing, so check and see if you have the same fuse, and another idea i might have is the ignition switch might be bad</TD></TR></TABLE>

 

One more thing:

When I had the short, before the fuse would blow, a relay (I assume) made a nasty buzzing coming from the drivers foot well.

Could it be this relay causing the problem?

 

Well here is an update:

I checked out the main relay as per the trouble shooting guide in the service manual and it is fine.

I also checked the harness where it plugs into the main relay - all is well except the test when I have the ignition in the start position. So that explains why it won't crank from the ignition switch. I checked the two wire harness from the ignition switch for breaks and continuity and they are fine. The under-dash harness is fine as far as I can tell. All the fuses are fine. I will try that starter relay that someone pointed out is next to the main relay.

I also swapped out the ICU. I now have intermittent wipers - yay - nothing else works that the icu controls (light on warning, brake warning etc.) nor do any of the original problems reported in the first post. Of course the icus that I used were from the junk yard so they might not work properly but it really doesn't look as though it has anything to do with my problems anyway.

There has to be something that is burned, shorted or unplugged that connects the horn, tach, and cluster stuff. Any suggestions? Maybe the fuse box itself is damaged?


Modified by devnull at 2:12 PM 11/1/2004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by devnull &raquo;</TD></TR><TR><TD CLASS="quote">Well here is an update:

I checked out the main relay as per the trouble shooting guide in the service manual and it is fine.

I also checked the harness where it plugs into the main relay - all is well except the test when I have the ignition in the start position. So that explains why it won't crank from the ignition switch. I checked the two wire harness from the ignition switch for breaks and continuity and they are fine. The under-dash harness is fine as far as I can tell. All the fuses are fine. I will try hat starter relay that someone pointed out is next to the main relay.

I also swapped out the ICU. I now have intermittent wipers - yay - nothing else works that the icu controls (light on warning, brake warning etc.) nor do any of the original problems reported in the first post. Of course the icus that I used were from the junk yard so they might not work properly but it really doesn't look as though it has anything to do with my problems anyway.

There has to be something that is burned, shorted of unplugged that connects the horn, tach, and cluster stuff. Any suggestions? Maybe the fuse box itself is damaged?</TD></TR></TABLE>

Sounds like you got some gremlins there man. Slap gdb on that thing, see what's up!

-PHiZ

 

I thought only VWs had electrical gremlins lol. PHiZ get down here and fix it and I will burn you a fresh new linux distro to get your fbsd POS puter running.

 

You've probably already tried this, but -- if you have the electrical diagrams for the car, I'd go through all the circuits that are malfunctioning; chances are, there is a common ground or something similar that everything runs through, and that will be your problem. Much easier to trace things on paper so you have some idea about what to check.

 

Thanks, but yeah I have been looking over all of the diagrams in the manual. The one thing I can't find though is this relay:


Someone told me it is the starter relay, but I can't find it in the manual.
Could it be causing some of the problems? I think it was buzzing really nasty when I had a short. Something down there was. <TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by acy76 &raquo;</TD></TR><TR><TD CLASS="quote">You've probably already tried this, but -- if you have the electrical diagrams for the car, I'd go through all the circuits that are malfunctioning; chances are, there is a common ground or something similar that everything runs through, and that will be your problem. Much easier to trace things on paper so you have some idea about what to check. </TD></TR></TABLE>

 

btw I noticed the turn signals don't work either. The hazards work though.

 

Just tested the ignition switch and it is fine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by devnull &raquo;</TD></TR><TR><TD CLASS="quote">Thanks, but yeah I have been looking over all of the diagrams in the manual. The one thing I can't find though is this relay:


Someone told me it is the starter relay, but I can't find it in the manual.
Could it be causing some of the problems? I think it was buzzing really nasty when I had a short. Something down there was. </TD></TR></TABLE>

Silly linux guy, that is your hood catch release, not a relay.
Sorry man, try unplugging it maybe? Just for giggles.
-PHiZ

 

lol. I unplugged it today and nothing changed.

I don't know. Maybe I need to take it in and let someone with one of those diagnostic pass through harnesses and a lot of time take a look at it. Damn it, it is like 79/hour for tech to play with it.

There has to be something somewhere grounding out.

 

TTT, im having the same fukin problem after I took off a msd box because it wouldnt run right with it.

 

back from the dead... ive got that problem now. What was the solution??

 

same here.. I need to know also..

 

The problem turned out to be a wire was not getting 12v or ground on the gauge cluster harness - I don't remember.

To fix:

Take a multi-meter and check for continuity on all of the different colored wires on the harness from end to end. If any are bad cut them out and replace with new wires. If all of them are good turn the car on and with the harness plugged into the fuse box check all of the grounds and 12v at the cluster end. (check manual for which color is what - I forget). I did not have continuity on a couple grounds and was not getting 12v on some wires. (I still don't exactly know why).

Now cut all of the grounds that where not grounding and ground them. If you were getting 12v that should fix the issue. If you need 12v as well get a different switched AND FUSED 12v and run it to the wires that need them. I grabbed it from one of the fuse box slots and added another fuse. Kinda ghetto but everything works