Ok so whats happening. In the winter the heater wasn't getting very warm at all, flushed the cooling system and back flushed the matrix. Had a nice lot of rusty water out did this a few times and was flowing full bore so no restrictions all good. Heater then seems better but not right. Bleed it well no air in system. Checked all the flaps/motors and rods i could see with the glove box removed all looked to be working correctly. So just left it, until now when the hot weather has appeared! Guess what now the air con is only semi cold. I had re gassed it in the winter replaced a couple o rings on the condenser fittings all ok. Have now noticed the compressor is running all the time weather the ac button is lit up or not. Well that might explain the heater problem if the air con is always on. with the engine off it turns free so the clutch must be ok. Not checked supply yet. Tried the old hold the buttons down for heater diagnostic and flashes up top LED on fan (not sure what that one means) one for front demist/windscreen which says solar sensor (was in the garage at the time) and one feet/face which says ambient air temp sensor(Have i got these correct?), so had a look around for it behind the bumper found a connector but no sensor. Called Keron and he sent one down, plugged it on and still the same codes. Is there a reset? Has anyone has anything like this before? Does anyone have a wiring diagram of the heater circuit? is there a separate ECU or is it all done in the control panel? Had the supra 11 years now and this is the first electrical fault not bad for a 25 year old car
Any help greatly appreciated
