yeah i hate the brave blue verts too! had to do 2 engines in one of those in 30degree weather.... sucked

 

so I have a similar odd problem -



I have a 90 vert that now has a high beam problem. The original problem was the constant flashing and beeping of the seat belt light. The beeping would stop, but the flashing would continue once the seatbelt was engaged.



So a purchased a CPU on ebay from a 1991 which shares the same model number FC66. Plugged it in and the seatbelt light is fine - but the high beams did not work. So I puchased another one on ebay from a 1991 vert. Same thing.



Then I plugged in the original cpu - the beeping is back, but the highbeams work. I never use the high beams and the beeping bothered me - so I installed one of the 1991 units for 3 months until it was time for inspection.



put in the original cpu, and now the flashing and beeping seatbelt light are intermittent, but the high beams do not work.



Any ideas? I am wondering if the Relay or switch is different in the 1991 and mated to the CPU - even though the cpu's from the 1990 and 1991 share the same model number.



Or as a fall back - how does one install a simple toggle switch to turn on the high beams - I just want to pass inspection

thx

 

I'm gonna take a guess and say the two cpu's you bought were probably from non-airbag cars, on NON-airbag cars the cpu wont control the highbeams...the switch and everything is different, god knows why.



If the only problem you're having is the seatbelt light blinking, beeping just cut the wire going to the seatbelt buckle, that should stop the seatbelt warning from working at all, and its not required for inspection so you'll be fine. if you cut the wire and it doesnt work try grounding the wire that should fix it. Be careful I know newer cars have airbag stuff in the seatbelt buckle but i dont think rx7's ever did, however i could be wrong, so check out a wiring diagram first if there's more then one wire.



kevin.

 

Just in case somebody comes across this with Google. If you are having problems with the cpu in your rx7 and you don't want to pay the $100 for a new one the repair is actually quite easy...probably.

Common symptoms: flashing seatbelt light, weird high beam low beam stuff.

There are 3 things that commonly go wrong, but I could imagine a fourth.

Cold solder joints: very easy to fix. Flip the board over so you see the solder joints. Look closely as you gently wiggle the components on the other side. If you see any pins wiggling resolder them.

Burnt traces: Look for blisters, flakes or burnt spots on the traces of the board. Scrape of any loose points and connect points a and b where you have broken the connections.

Bad capacitors : this is actually what happened to me. Remove the capacitors, one at a time if you have a bad memory, you can test them with a meter or simply replace them, they are under a dollar each. Find some electrolytic capacitors (radial lead) and match the farad rating. It is okay to go up in voltage, just not down. Solder in the new ones. Should be a 47, 220, and about five 10 micro farad capacitors to replace. 4 of mine were bad. Make sure you solder them in the right way!

Lastly could get some bad transistors, these are the electronic switches. Most of them appeared to be 2sd1981's, but you can cross reference these.

All of the repairs above are pretty danged easy and can save you $100 or more.

Good luck!

 

I also have a 91 vert and solved parking light issue with a new switch. I also have FTP working but the high beams not coming on.

If someone could tell me which of the three boards to look for in the FC66 "CPU" (I don't see any program able components so not sure why it's a cpu.. maybe an ECU.. ) and ideally what components on what board are controlling the HIGH BEAMS I'll be most appreciative.

I just got this from my neighbor and am really enjoying it and the high-beams are the only thing left for me to take to inspection (gotta love Virginia..).

ALso I know people rewire these to separate relays and if you have suggestions on that would love it. This design burns switches out.. which I'd like to avoid happening again. Tearing apart "cpu's" looking for bad capacitors is not fun..

 

If someone has thoughts on this point.. I just need to get the beams working to pass VA inspection..