Hi everyone 2003 360 Spider....with a roof that doesnt want to go down. Any help would be hugely appreciated. Roof fuses all ok, (15A / 7.5A / 30A). Windows drop on roof switch, main valve solenoid clicks once they have dropped....but absolutely no signs of life from the pump. Changed relay on roof solenoid / valve block - no better. Going to check voltage at roof relay - any other voltages to check? No roof error code or beeping, just shows constantly roof open once the sequence has started with the roof drop. Can end the sequence by pushing switch back forwards (although windows stay down but are then operational via the window switches again). Fluid level is fine - a leaking ram was replaced a few months ago and roof worked correctly afterwards. Before this happened it could be slightly odd and sometimes not go down...but moving the car tended to solve that issue. Are there any microswitch triggers to trigger hydraulic pump? Anything I can try to close / open manually that might get me somewhere? Guidance and expertise greatly appreciated.
confirmed 12V and GND on the switched circuit for the pump relay GND on the signal circuit but when activating the switch, only 70 milivolts coming through (from 4 milivolts when windows are dropping). ECU trouble?
So you have a clear change of state between 1) button not pressed 2) button pressed, windows coming down 3)button pressed, windows down. It does sound like an ECU issue, but I think I'd be checking the roof operating logic before having the ECU repaired/replaced. There is another message thread currently running on the roof... Pump operation prerequisites here: https://www.ferrarichat.com/forum/posts/150077032/
Hi thank you for the reply. Went through it end to end and deduced it had to be the ECU....hey presto donor ECU and the roof now works perfectly. So this can be put to bed. Essentially the ECU was intermittently (nearly never but enough to cause major confusion) sending the P.M signal to the pump relay. Now onto a dead resistor pack for the HVAC. The joys of Ferrari ownership!
Too easy (for us). Thanks for the follow-up. Glad you found a donor. Will you be sending the old one away to be repaired? NLA? Might have to have it repaired.
Yep had it repaired so now have a spare...and hedgehog also repaired so all working again. Hedgehog resistor pack failure in this case killed the blower completely, rather than making it blow full beans all the time.
