Hello. Sync 3 retrofit hardware is all here now.
I have mounted the APIM and ACM.
I have currently many DTCS:
===APIM DTC===
Code: U0121 - Lost Communication With Anti-Lock Brake System (ABS) Control Module ‘A’
Code: U0155 - Lost Communication With Instrument Panel Cluster (IPC) Control Module ‘A’
Code: U0198 - Lost Communication With Telematic Control Module ‘A’
Code: U0238 - Lost Communication With Digital Audio Control Module D
===ACM DTC===
Code: U201A - Control Module Main Calibration Data
I am actually rying to find out what is the cause of this. I noticed many of those modules run on HSCAN 3 so I checked my wiring to understand if that was the issue but it is not, I even checked the voltages of pin 19-20 on the apim connector for hs can 3 and it was correct.
Also checked the can lines between GWM and APIM and all are connected so what could be the issue?
Right now the ACM audio is fixed in AM radio, I connect change it (only if I do something to acm with forscan, like write as built with no changes, then it starts playing the audio selected). Volume knob works but on the screen it reports always zero, and ford chimes volume is extremly high.
Any suggestions?
I attached apim and acm as built already converted from abt acm.txt (1.3 KB) apim.txt (495 Bytes)
Here’s the AB that I’m using right now for APIM. ab.txt (502 Bytes)
I’ve currently deactivated anything strictly necessary for it to work but I still get DTCs.
Audio and volume control is working fine.
DAB is not working (but It might be because I have the car in the garage and it doesn’t get any signal, since also NAV is randomly working)
Ford Chime works but it is VERY LOUD.
DTCs are still:
===APIM DTC===
Code: U0121 - Lost Communication With Anti-Lock Brake System (ABS) Control Module ‘A’
Code: U0155 - Lost Communication With Instrument Panel Cluster (IPC) Control Module ‘A’
===ACM DTC===
Code: U201A - Control Module Main Calibration Data
I found online a vin from a fiesta with the same ACM (H1BT-18C815-VT) and download ab data but it keeps giving u201A. I noticed that it shows many ab values compared to a youtube video I saw… maybe it is somehow reading it as a combination acm? also considering that many of the edits in ab results in writing blocks failed (for example turing on dab radio… that this acm supports…). (and yes, this is from a new profile in forscan)
I even tried to get some data from fdrs but obviously it detectes that my car has another vin and aborts the procedure…
What ACM is this asbuilt from? I thought you changed the ACM, if so to what?
The L1TT-18D804-HS should be replaced with a standard ACM. That is Sync 2.5 and an ACM.
Yes I replaced it with the mentioned ACM H1BT-18C815-VT and the asbuilt is coming from it.
I just also downloaded from the same vin the ab for the apim and voilà, DTCs for ipc and abs disappered.
**Now I have just the ** Code: U201A - Control Module Main Calibration Data for ACM
̶a̶n̶d̶ ̶i̶n̶ ̶A̶P̶I̶M̶:̶ ̶C̶o̶d̶e̶:̶ ̶U̶0̶4̶5̶2̶ ̶-̶ ̶I̶n̶v̶a̶l̶i̶d̶ ̶D̶a̶t̶a̶ ̶R̶e̶c̶e̶i̶v̶e̶d̶ ̶F̶r̶o̶m̶ ̶R̶e̶s̶t̶r̶a̶i̶n̶t̶s̶ ̶C̶o̶n̶t̶r̶o̶l̶ ̶M̶o̶d̶u̶l̶e̶
̶a̶l̶o̶n̶g̶ ̶w̶i̶t̶h̶ ̶t̶h̶e̶ ̶v̶o̶i̶c̶e̶ ̶m̶e̶s̶s̶a̶g̶e̶ ̶t̶h̶a̶t̶ ̶e̶m̶e̶r̶g̶e̶n̶c̶y̶ ̶c̶a̶l̶l̶ ̶i̶s̶ ̶n̶o̶t̶ ̶w̶o̶r̶k̶i̶n̶g̶ (fixed by enabling emergency call in RCM) for some reason it was disabled even tho in the sync 2.5 emergency call was enabled?
Something in the asbuilt does not match the expected data or firmware. This is internal to the ACM, probably not going to affect anything, but should be corrected.
Do you have an outboard amplifier or DSP?
Well, looks pretty good now except the ACM. Good work.
I don’t have any external amp.
I uploaded the ab where the ACM was originally from, the only ab change I made was from 7 speakers to 6, since my car only has 6 (and even then, like in the first post of this thread, I would get two DTCs, one for calibration data and the other for speaker open circuit).
So I don’t know what it does not like in the configuration
This is the current ACM config: currentacm.txt (1.3 KB)
(there is a firmware update for the unit but forscan is unable to find ecu configuration: h1bt-14c654-fd. And I can’t do it with fdrs since it still thinks my car has sync 2.5)
Testing today the DAB radio shows on audio options but it isn’t able to get any signal (or find any station…) so it might me interesting to look into it as it might be related
I asked forscan support. They do not raccomand to do any firmware update since there is a flash memory erase collision… and cannot suggest any other thing I might try to fix the issue…
This is interesting.
I was able to force PMI using FDRS by disconnecting vci, read donor vehicle data via vin, start PMI, as soon as it starts, connect VCI and it started writing data (and even updated ACM).
Issue was gone, but it sets my speakers number to 7. Giving DTC for Speaker #6 Open circuit.
IF I set speaker number to 6 it gives DTC U201A!!!
Now I need to figure out how to set it to 6 since my car on old acm (with sync 2.5) had set 6 speakers.
If the front speakers are separate, 2 in each door, then that would be 2 speakers as defined here. If they are a woofer with a nested tweeter, they are only 1 speaker.
Speaker 3 and 4: What are the options there? Probably something like none, tweeter, non-tweeter, and woofer? What happens when you turn them all to ‘woofer and tweeter’?
yes. now updated to last version (PMI in FDRS updated the firmware to last version)
Looking at the drawings it’s just one speaker for each door, plus two tweeters near the windshield (for 6 speakers configuration).
In my configuration 18808D is missing. On the MK8 fiesta for basic audio you have 4 speakers in the 3 door saloon, 6 or 7, depening on the configuration for the 5 door saloon. Or 10 with the additional b&o package.
This is what you’re looking for. With this selected, the ACM will not set a DTC for missing speakers.
Do you know what values in the asbuilt these selections change?
Do you not have a center speaker?
I can see that there is no settings for the center channel in FORScan for that ACM. Other ACM’s do have this. You can try this:
From the file you posted, CurrentACM, your asbuilt reflects
727-01-01 0301-0102-0138
Change this to
727-01-01 0301-0102-81xx
(xx = let FORScan calculate the checksum.)
In theory, if this ACM lines up with others, this will disable the check for open function for the center channel. If it doesn’t work change it back. You will need to restart the ACM and clear the DTC’s to see if it works.
The change for center channel detection didn’t work — writing the blocks failed.
But, as luck would have it, I accidentally fixed it.
I restored the AsBuilt data from a donor VIN. The block 727-01-01 was set to 0301-0102-0138. When comparing changes between Easy Mode and raw AsBuilt, I noticed that this value corresponds to the “Output Channel Mode.”
Initially, I set it to 4 channels (and Speaker number to 6), since the old 2.5 ACM had that value. However, in Easy Mode, setting it to 2 returns “Not configured or wrong value,” while setting it to 3 shows “4 channels.” So, even though the donor AsBuilt had it set to 2, that appears to be invalid or non-functional in my case.
The key detail: any change to this value through Easy Mode causes a configuration error. But writing it manually as 0301-0103-0138 (Output Channel Mode = 3 to get “4 channels”) and leaving the speaker count at 7 works perfectly. No DTCs for speaker #6 being open or misconfigured acm.
