dashboard electrical TR87

I am also VERY interested in HOW this light is triggered and why.

When I have driven the first time per day, there is no red light at all.

As soon as I have a break, no matter how long, and start the engine, this light is red.

Looked in all sensors at the brakecilinder but they don't send a signal. (If disconnected, the light stays on...)

Have looked many hrs but WHO can HELP ?


I also see that the two lights Engine Check are not yet installed in your dash but that is because your car is a EURO version and not USA !

Install these lights and read my thread !!

 

Those lights are the "slowdown" warning lights used on the US version and '87 (and later) CH version. Go here:

www.ferraridatabase.com

and select "The Downloads", then "Other Manuals". Select the US TR wiring diagram 509/88 -- see Fig 7 -- they are shown there.

Is yours a CH (Swiss) version? Have you ever decoded your VIN or checked the engine family marking ('87 CH = F113B046)?

(Mel -- your 512TR is Motronic -- no check engine lights on any version of TR which is K or KE-Jetronic)

 

Thanx Steve ..... of course you are correct ....

 

Romano,
Your post is perfect timing for me--I have an illumination bulb burned out on my speedometer. I'm told you can change without removing instruments (if your arms are long and skinny--I'll enlist my daughter!), just wanted to verify if there are two bulbs only (one each side) and that they appear to have a socket that is just press fit into the holder on the housing--no need to push in and twist like many other sockets. So just pull straight out to replace bulb??

Also, for your question Steve is saying that by verifying your market and engine family you can determine if (likely that) your car originally had catalytic converters installed--if no cats from factory I wouldn't think your slowdown lights would even be wired at the dash, don't know that for sure though. Regardless, without the cats now your thermocouple's aren't installed and likely your cat ECU's aren't connected either, defeating the slowdown lights on the dash. That's why you have never seen them illuminate. BTW the CAT ECU's are hidden under a panel just above the bank 1-6 fuel accumulator. If installed would further suggest your car originally had cats.

 

Can you please post the engine family marking shown on the engine block above cylinder #1 -- should be something like F113B, F113B000, or F113B046 (and/or the VIN)?

It's always possible that F decided to just use a common wiring and dash assembly to keep things simple in the factory and intentionally not use the warning lights on versions that didn't need them. The red and green wires on US and CH versions run to the thermocouple warning light ecus mounted under the small cover inboard of the RH rear wheel just above the RH fuel accumulator as Tim mentioned:
Image Unavailable, Please Login
Image Unavailable, Please Login

 

Now I'm curious. Can you read what the symbols/icons/text on the warning lights are (remove socket and shine a light in to illuminate?). Would be curious if they are just red lenses or if they say "SLOW DOWN CYL 1-6" or "SLOW DOWN CYL 7-12" (or something like that, mine have never worked so I don't know the exact verbiage). Could see F putting in a "generic" dash but would not expect they would have plumbed the thermocouples and installed the ECU's, so will be curious to hear if they are in-fact installed.

Thanks for this info. AFAIK I have to remove the knee bolster (USA model) to get to the lower nuts/bolts on the cluster, which is major work, so I'll live with it for now.

 

Steve, how are your ECUs holding up--did you finally get a good set? I guess I should be glad mine aren't installed, though my OCD is negatively triggered every time I start the engine and don't see the lights flash

 

Yes (knock on wood). I just replaced one that was failing the self-test about 50% of the time (even though it was one of the supposedly "better" style with the green potting -- the two earlier pairs that I replaced had the earlier black potting). It is nice to always get BOTH lights at start-up .

I've got a late TR so my thermocouple warning light ECUs are the later type like this:

Image Unavailable, Please Login

(those previous photos showing the location aren't from my TR):

 

In 14 years of ownership do not recall having had the joy of seeing both 'slow down ligths' lighting up at the same time during starting...is either one or the other.

Have also tried to clean and re-weld the contacs on the Thermocouples board but no joy.

 

ECU= electronic Computer Unit = (Zuendungs) Steuer Komputer imo.

Number 7 of this 512TR parts drawing is the Motronic ECU.
Image Unavailable, Please Login

 

Yes, of course -- brain freeze on my part (the V8 location popped into my head and out of my fingers instead of the correct flat 12 location).

Yes, F113B decodes to a euro KE-Jet (without cats) so the bulbs in those positions wouldn't be used for anything.

 

We understand your confusion--Mel likes to tease TR guys with 512TR technology. If you did have ECU's (I think correctly Electronic CONTROL Units), they would look like what is depicted in post #7 or #10. So, do you have 2 ECU's there, is that what is marked "LENZ TURBOTRONIC"? And no wiring is connected?

 

Impressive Roman ... please keep us so well updated, plus lots of photo's please !