I don't know if it's either yet. Could be a sensor or actuator issue. If it's intermittent, maybe your best bet is to either find someone with a scanner to interrogate the system or just to throw the parts cannon at it. I haven't yet seen any FChat posts showing the insides of a control panel or what the outputs from the pins are when you turn the knobs, so I can't give any guidance on this. The F355 control panel looks like this inside: Image Unavailable, Please Login Bulbs, switches, diodes and resistors.. Yes, components burn out, circuit board tracks fail, switches don't latch properly, but the ECU fails more often (at least on the F355). If you open up the control panel, you may see something obvious... like burnt bits.. but if the issue is intermittent, you might not. Can someone else check his/her F430? This seems to be normal on the 360, despite what the manuals say. The F430 uses the same ECU, but there are dipswitch settings inside. I'm not sure if they change the behaviour of the system.
From the outside, they are nearly identical, with only some of the labeling being different (for example, the F430 has "OFF" instead of "STOP" for the A/C... I never understood why it isn't just labeled "A/C", LOL).
I didn't realise, thanks... but I was actually comparing the internals of the F355's panel with the 360/430's. They have no complex electronics inside them, i.e. resistors, diodes, switches and PTC. Stuff which is easy to repair/replace.
Quick update ..I worked with Dale today just going thru a number of various settings and it appears everything is in order except for the air direction control ...we can't get the footwell to get flow or have dash vents and defrost vents working together .. everything else works ... heat, air condition , temperature regulation etc, dash vents solo, defrost solo Most of it was "fixed" once the off button was released ..meaning not pushed...the infamous button that confuses a number of owners The next step is to see if there's voltage on the flap motor on the footwell ....if there isn't any voltage most likely it's the ECU I asked Dale to do one more battery reset to see if it changes the behavior that would prove positive that it would be the ECU so hopefully he'll report back here I am going to attach some pictures to make it easier for people to see where the footwell module is... it's number five at the diagram and some of the other pictures to show and give guidance.. and also shows what the ECU looks like Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
I really appreciate Dominick's support on this matter. He's an awesome contributor to this forum! Just an update from my side: Another "battery reset" did not have any impact, Also, for some reason, I am unable to use the attached images, as they appear too blurry when I save them and zoom in. It's likely a combination of low-res images and my old eyes. Anyway, as of now, I don't know exactly what to test and how to test it.
Dale, I am not sure I follow - I mentioned above and on the phone to test the wires on the Footwell motor and if there isn't any volts there when using the controls to direct airflow there then most likely you need to repair or replace the ECU I thought I sent the pictures to you on text as well .. can you see them there If you cannot position yourself under dash .. get a friend who is works on cars and can crawl under dash to measure with a voltmeter .. there is not much anyone on this forum ( at a distance ) can do .. we have gotten to a point that we know what to do - just need to do it
