Wiring diargams
Discussion
I don't know if anyone has every had the luxury of pouring over these.
To start off, the scans are rubbish, I spent several hours correcting out shifts and missing sections. The fusebox is still a mystery and a whole section is as yet unknown. Once they have been corrected for general scan errors the diagrams themselves are also wrong. Several pins don't conform to standard convention where others do, many relays have pin 86 as ground, others have pin 85 as ground (FYI Relay Pin 30, 86, 87 87a are standardised, along with a plethora of other numbers).
Several pins that should do something, do nothing at all. IE, pin 30 on the flasher relay is not connected according to the diagram.
Certain items, don't trace back correctly, like Engine fan 2 signal connects to what I gather as the Main ignition relay. Then the engine fan 2 relay has no input signal at all, yet the output connects to the fan.... Oh, and the pin connections on the main ignition relay, don't actually make any electrical sense.
The lights ECU pinout doesn't have enough pin descriptions, check it out, they all need to be shifted down 1 pin and another line added at the top for "Fog Lamp Signal" - completely omitted on the diagram.
Absolutely infuriating and completely illogical.
Its no wonder no one can get their head round these, Im pretty good at wiring and its got me confused.
Its like the Monty python sketch where the animator suffered a heart attack and died suddenly. Then had the trainee finish the job, the trainee armed with a black light to show up the black writing on a black background. Then they had the technician check out the work with a dark coloured multimeter with a low battery that had a black light that lit up black to tell him that it was correct.
Anyway, to the point. Is there anyone on this earth that has the ORIGINAL cad DSN drawings to refer to. As working with the poor scans is bad enough, and its difficult to say if I have introduced errors. I honestly don't think that I have, but I need to check for my own sanity!
J
To start off, the scans are rubbish, I spent several hours correcting out shifts and missing sections. The fusebox is still a mystery and a whole section is as yet unknown. Once they have been corrected for general scan errors the diagrams themselves are also wrong. Several pins don't conform to standard convention where others do, many relays have pin 86 as ground, others have pin 85 as ground (FYI Relay Pin 30, 86, 87 87a are standardised, along with a plethora of other numbers).
Several pins that should do something, do nothing at all. IE, pin 30 on the flasher relay is not connected according to the diagram.
Certain items, don't trace back correctly, like Engine fan 2 signal connects to what I gather as the Main ignition relay. Then the engine fan 2 relay has no input signal at all, yet the output connects to the fan.... Oh, and the pin connections on the main ignition relay, don't actually make any electrical sense.
The lights ECU pinout doesn't have enough pin descriptions, check it out, they all need to be shifted down 1 pin and another line added at the top for "Fog Lamp Signal" - completely omitted on the diagram.
Absolutely infuriating and completely illogical.
Its no wonder no one can get their head round these, Im pretty good at wiring and its got me confused.
Its like the Monty python sketch where the animator suffered a heart attack and died suddenly. Then had the trainee finish the job, the trainee armed with a black light to show up the black writing on a black background. Then they had the technician check out the work with a dark coloured multimeter with a low battery that had a black light that lit up black to tell him that it was correct.
Anyway, to the point. Is there anyone on this earth that has the ORIGINAL cad DSN drawings to refer to. As working with the poor scans is bad enough, and its difficult to say if I have introduced errors. I honestly don't think that I have, but I need to check for my own sanity!
J
They probably wired them up to those drawings, which explains a lot.
I poured over them to figure out why every so often the little button with the green light starts flashing while I'm driving and then winds up the windows and won't let me open them again until I stop, turn off, open the door and start again. Would have stood some chance if I could even find said button on the drawings. Wouldn't mind if the aircon worked but that too bears little resemblance to the drawings.
I poured over them to figure out why every so often the little button with the green light starts flashing while I'm driving and then winds up the windows and won't let me open them again until I stop, turn off, open the door and start again. Would have stood some chance if I could even find said button on the drawings. Wouldn't mind if the aircon worked but that too bears little resemblance to the drawings.
Over the years I've found them really helpful, they take a bit of getting use to but it's not a problem following the odd broken line or two. The bad one is the fuse box drawing but I've had little use for that one. The rest I find very accurate apart from some of the descriptors. The TVR cad drawings of the steering wheel, light switch etc are invaluable.
Rich.
tofts said:
The lights ECU pinout doesn't have enough pin descriptions, check it out, they all need to be shifted down 1 pin and another line added at the top for "Fog Lamp Signal" - completely omitted on the diagram.
There is a descriptor missing but it isn't the fog lamp signal as that is what the fog lamp switch signal is referred to lower in the lights ECU. A1 and A2 should both read "rear fog w/l" (warning light) one wire goes to the rear fog light, the other goes to the warning lamp around the fog light switch Rich.
Your right Rich, just got infuriated at the time and didn't follow it up!
I've managed to tidy up all of the diagrams thus far, so they read correctly and make sense. Once done, I will probably upload them somewhere for people to use, as they are a vast improvement over the originals in terms of ease of tracing. Its just a shame you original CADs are not available somewhere!
I've managed to tidy up all of the diagrams thus far, so they read correctly and make sense. Once done, I will probably upload them somewhere for people to use, as they are a vast improvement over the originals in terms of ease of tracing. Its just a shame you original CADs are not available somewhere!
Likewise please - I would like to mirror them on www.tvr-cerbera.co.uk
Get ready for a world of pain. I had the same problem long ago. It ended up with me getting so annyoed by the wiring diagram I bought a second hand ECU and drew out a circuit diagram for it. I then decided that even that had some problems with th epins they had allocated on teh processor so eventually ended up dumping the ECU memory and recompiling it to make a working dump before slowly pouring through it to make sense of the outputs so i could step through it with a debugger.
That all ended about five years ago, and am quite happy that I've never bothered to look at it since.
That all ended about five years ago, and am quite happy that I've never bothered to look at it since.
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