HVAC module programming error

[DK4]

Hey @Jesse-Infotainment sir, I was talking with John F. earlier today and he said you might have an idea to help me out.

I got a digital knob HVAC module from eBay a while back. I assumed it was used but it didn’t have any screw marks in it, it was in mint condition, and certainly didn’t have all the address blocks programmed in Foscan.

When I tried to write my 2022 OEM settings to it, Forscan says NOPE. I get the service interrupted error.

I tried writing one block at a time, or all… doesn’t matter. I have the latest official release of Forscan. I have a OBDLink Ex adapter. I don’t save a profile and scan all the modules every time I connect.

Any ideas? Or is it ask Forscan Support for help and a test version time?

The module did sorta work when I first put it in. Knobs and fan control worked, but no heated/cooled seats or steering wheel. I didn’t try everything on it.

Swapped my OEM one back in and it works fine.

Thank you.

(Pic shows my old version of Forscan here, but I did update it and tried again after this pic)

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[Jesse-Infotainment]

Upgrade your forscan.. You are on a old version

 

[DK4]

I installed 2.3.50 and tried again after that pic was taken. I put a note about that, but I knew I should have taken another pic, haha.

Edit, Just took a pic.

 

[XLT22]

WSM wants a PMI if replacing the component. Forscan is hit or miss when attempting to replace a module from my experience.

 

[Je1279]

Is this common when replacing the HVAC module? First I'm hearing of this.

 

[DK4]

WSM wants a PMI if replacing the component. Forscan is hit or miss when attempting to replace a module from my experience.

Interesting. What is the PMI process?

Just googled it. Hmm, not sure I can do all that with Forscan.

 

[XLT22]

You already have the expensive part. FDRS is a $50 subscription for 2 days to run the PMI.

 

[DK4]

Thanks for the info XLT22.

 

[Jesse-Infotainment]

Do a freshscan in the neweestversion.. When it asks yes or no. click no

 

[Jesse-Infotainment]

It wont PMI in there.. its not the correct part number aslo need a J2534 Cable to do it. Cant do it with a OBD link.

 

[DK4]

Do a freshscan in the neweestversion.. When it asks yes or no. click no

I don’t ever save a profile and scan all modules every time I connect.

 

[DK4]

It wont PMI in there.. its not the correct part number aslo need a J2534 Cable to do it. Cant do it with a OBD link.

I might have a J2534 adapter, but can’t seem to find it at the moment. Of course.

 

[Jesse-Infotainment]

I might have a J2534 adapter, but can’t seem to find it at the moment. Of course.

Still wont PMI. not the right part number forthe truck so it will boot it.

Im still not sure why its not pulling the as build. It shouldnt stop when reading. You may try another cable.. Not sure which cable you are using but that is odd. I would understand it failing during write but read is not normal

 

[DK4]

It is failing on the write. It reads fine.

I was using the OBDLink Ex wired adapter. I have a couple other cheap ones too I can try.

Edit, this is what the 21 module had on it before I try to write the 22 data to it.

 

[crazywayne311]

sorry you’re running into issues. Just bought one brand new from ford for $111 and it went in and took my as built.

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