Apim not seen via ODB2

Ford Non SYNC 3 Support
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1

I’ve been working on doing a sync 3 to sync4 apim swap. However I now have an issue where I cannot see my sync 3 apim via odb2 scan including Forscan. I previously could see my sync 3 apim via forscan.

So my question is where do I start troubleshooting the issue?
Is there a pair of wires on the APIM that directly connects to the ODB2 that could be causing the issue?
Is there a fuse that would cause the APIM to not be detected but still allow the APIM to function?

Any help would be appreciated. 2018 expedition with factory sync 3 APIM.

2

There are pins you will need to remove in the 52 pin plug to get it to work. Here are the Pinout for the APIM plug for a Sync 4 Expedition that you will need and no more than this shows…

C2383A APIM
C2383A APIM2356×1323 291 KB

3

So my problem is I can’t see the sync 3. I’m assuming something I the wiring harness is messed up which is the reason I can longer see the sync 3 but not sure which wires send the signal from the apim to the odb2

4

Anyone have any clue on this. Sync 3 apim not visible from ODB2 port. I’m assuming its a pair on the APIM that does not have a good connection.

5

Well, you keep bouncing around on your info. Now you can’t see your SYNC 3 APIM? Or do you mean the SYNC 4 APIM you’re trying to get to work?

6

I was trying to explain what happened prior to not being able to see the APIM.

I cannot see my SYNC 3 APIM via ODB2 port on 2018 expedition. Radio works fine just not detected via ODB2

7

Did you delete your vehicle profile in Forscan and start a new one every time you swapped modules or do a calibration update?

Also what OBD connector are you using?

8

I did delete the profile. I just upgraded forscan to the newest version but generic automotive odb2 readers give a APIM not detected error. One of the adapters listed on the forscan website.

I have not done a calibration update. How would I do that? I also read pulling a fuse can reset apim but the fuse suggested is not on my 2018 model.

I’m guessing the issue is from a lose wire or pin at apim connection but not sure which pair would cause the issue.

9

You’ll need to be more clear about what the issue is really…

Can you see the Sync 3 APIM after it is installed in the vehicle and you scan a NEW PROFILE with FORScan?
Can you see the Sync 4 APIM after it is installed in the vehicle and you scan a NEW PROFILE with FORScan?

Did you remove pins to get Sync 4 to work?
Did you put them back when you installed Sync 3?

10

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