2010 SHO touch screen failure

[Scott Milligan]

Hi folks, my screen is non responsive. I have sync 1 with the buttons below display. All functions work from display, bluetooth still works but most of the time the screen is inop. My autel scanner is giving me code U0162 lost communication with navigation display module. The screen goes blank in reverse also, no backup camera. I downloaded the sync upgrade from syncmyride but it doesn't launch. My scanner indicates USB communication is good.

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[krewat]

If you're losing communications between Sync and the Nav display, a software update isn't going to help that.

 

[Johnbigdog]

If you're losing communications between Sync and the Nav display, a software update isn't going to help that.

He doesn't have a front display interface module (navigation touch screen). He has a front controls display interface module that is a seperste beast in and of itself. With sync gen 1, however with a 2010 if he does have navigation, it sounds like he has sync with navigation (next gen nav?) where the ACM is the screen and navigation unit.

I will agree that updating sync (which is a separate module when dealing with a gen 1 system) will not affect your display screen with a gen 1 system.

 

[Scott Milligan]

He doesn't have a front display interface module (navigation touch screen). He has a front controls display interface module that is a seperste beast in and of itself. With sync gen 1, however with a 2010 if he does have navigation, it sounds like he has sync with navigation (next gen nav?) where the ACM is the screen and navigation unit.

I will agree that updating sync (which is a separate module when dealing with a gen 1 system) will not affect your display screen with a gen 1 system.

Car is at the dealer, he said most likely the APIM module under center console. I do have gen 1 sync with navigation. I'll update when verified. I'll buy a used module, install it and have the dealer program it. My autel scanntool doesnt upload software.

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[Scott Milligan]

Car is at the dealer, he said most likely the APIM module under center console. I do have gen 1 sync with navigation. I'll update when verified. I'll buy a used module, install it and have the dealer program it. My autel scanntool doesnt upload software.

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Dealer uploaded sync update and said the screen was bad although its been working fine so far. Picked up a new junk yard screen for $100 as a backup. Sounds like it's going bad. Dealer said if car will accept a new software update the apim is usually ok.

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[Scott Milligan]

Dealer uploaded sync update and said the screen was bad although its been working fine so far. Picked up a new junk yard screen for $100 as a backup. Sounds like it's going bad. Dealer said if car will accept a new software update the apim is usually ok.

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Replacement screen is also intermittent so I'm thinking it's the APIM. Looks like the center console has to come out to get to it.

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[Scott Milligan]

Replacement screen is also intermittent so I'm thinking it's the APIM. Looks like the center console has to come out to get to it.

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So I replaced the APIM under the console and put in another used touch screen and I have the same issue. It works for about 10 to 15 min then no response on touch screen. Is there another module besides apim that interfaces with the touch screen? All functions appear to work on the screen using the hard buttons but when the screen is non responsive the backup camera is always just a black screen.

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[luigisho]

Keep posting as you track this down. What a PITA.

 

[Johnbigdog]

He doesn't have a front display interface module (navigation touch screen). He has a front controls display interface module that is a seperste beast in and of itself. With sync gen 1, however with a 2010 if he does have navigation, it sounds like he has sync with navigation (next gen nav?) where the ACM is the screen and navigation unit.

I will agree that updating sync (which is a separate module when dealing with a gen 1 system) will not affect your display screen with a gen 1 system.

I'm going to have to apologize to the O.P. and krewat as I didnt look up in the w.s.m. how this system operated and was going off memory.

Reading about the system, the ACM enables the FDIM over an enable circuit.

The ACM sends a video signal to the touch screen. The ACM is also a pass through for other networked messages like hvac to display.

The touch screen sends touch input to the acm over another circuit.

If the video circuits are damaged the screen may have a backlight, but no video.

Rear camera video feed is a direct input to the FDIM. What I'm not reading is if the acm to fdim circuits are damaged, if the rear camera should work?

I'm also perplexed by the DVD circuit. The LVDS circuits may be for video?

Looking at the pinpoint test the test checks the TX and TX circuits before ondeming the screen or the acm so I would assume this is how the acm knows the tou screen is there. Treating that like a communication circuit, if the screen is blank/inop it could be a power, ground, enable circuit or communication circuit and finally the acm. The apim has nothing to do with this sustem.

So for clairifiaction for me. Is their anything displayed on the screen? If their is, or there is a back light, the module has some power, ground and the enable circuit is working. What is uncertain is the TX and RX circuit and the ACM itself.

If you got the screen from a junk yard, may want to look at pinfit or swap the TX and RX circuits with the DVD circuits (substitute the circuit for an overlay and rule out pinfit) before condemning the acm.

I don't know if it helps.

 

[Scott Milligan]

I'm going to have to apologize to the O.P. and krewat as I didnt look up in the w.s.m. how this system operated and was going off memory.

Reading about the system, the ACM enables the FDIM over an enable circuit.

The ACM sends a video signal to the touch screen. The ACM is also a pass through for other networked messages like hvac to display.

The touch screen sends touch input to the acm over another circuit.

If the video circuits are damaged the screen may have a backlight, but no video.

Rear camera video feed is a direct input to the FDIM. What I'm not reading is if the acm to fdim circuits are damaged, if the rear camera should work?

I'm also perplexed by the DVD circuit. The LVDS circuits may be for video?

Looking at the pinpoint test the test checks the TX and TX circuits before ondeming the screen or the acm so I would assume this is how the acm knows the tou screen is there. Treating that like a communication circuit, if the screen is blank/inop it could be a power, ground, enable circuit or communication circuit and finally the acm. The apim has nothing to do with this sustem.

So for clairifiaction for me. Is their anything displayed on the screen? If their is, or there is a back light, the module has some power, ground and the enable circuit is working. What is uncertain is the TX and RX circuit and the ACM itself.

If you got the screen from a junk yard, may want to look at pinfit or swap the TX and RX circuits with the DVD circuits (substitute the circuit for an overlay and rule out pinfit) before condemning the acm.

I don't know if it helps.

The screen displays the correct info and the hard buttons work fine to activate functions. The touch screen works for about 5 or 10 minutes. The backup camera works until the touch screen stops responding. After that it shows a black screen in reverse. Is the acm an actual module or is it simply the box on the back of the buttons? Sounds like I should try and replace the acm. It may be unrelated but my right side blend door is inop.

Thanks for the info, im really stumped here.

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[Johnbigdog]

The screen displays the correct info and the hard buttons work fine to activate functions. The touch screen works for about 5 or 10 minutes. The backup camera works until the touch screen stops responding. After that it shows a black screen in reverse. Is the acm an actual module or is it simply the box on the back of the buttons? Sounds like I should try and replace the acm. It may be unrelated but my right side blend door is inop.

Thanks for the info, im really stumped here.

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I dont know how the harness runs to say they are not. Blend doors are a common failure. With everthin working it seems like the TX and RX circuits or ACM. The Audio Control Module is the box you put cds in.

I could maybe see if the acm isn't sending a signal how the backup camera may not work, but not 100% sure.

 

[Scott Milligan]

I dont know how the harness runs to say they are not. Blend doors are a common failure. With everthin working it seems like the TX and RX circuits or ACM. The Audio Control Module is the box you put cds in.

I could maybe see if the acm isn't sending a signal how the backup camera may not work, but not 100% sure.

Ok, thanks. I'll replace acm and let you know.

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[SM105K]

This is exactly what I am saying in this thread...


https://shoforum.com/index.php?thre...-and-radio-controls-not-working-right.138754/

 

[Scott Milligan]

Ok, thanks. I'll replace acm and let you know.

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Johnbigdog- you called it. I replaced the acm and this fixed the issue. As a bonus I now have this cool hybrid screen! Donor car must have been a hybrid. The fuel mileage gauge works but the rest of course doesnt. Everything else works fine. Non programming required. Thanks for the help. I have 2 extra apim and touch screen if anybody needs one.

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[SHOdded]

Nice!

 

[Johnbigdog]

Having a dealership complete a Programable Module Instaltion (PMI) with the a.c.m. disconected should be able to restore normal function. If As-Built selection is available, this then PMI will bring it back. Maybe.

Unless your happy, then dont worry about it.

 

[SHOdded]

1. NOTE: Module configuration is required when a new ACM is being installed.
   
   Upload the ACM configuration information to the scan tool. For additional information, refer to Programmable Module Installation (PMI) in Section 418-01 .

1. Remove the Front Display Interface Module (FDIM). For additional information, refer to Front Display Interface Module (FDIM) in this section.

1. Remove the 4 screws and the ACM .
   • Disconnect the electrical connectors.

1. To install, reverse the removal procedure.
   • Download the ACM configuration information from the scan tool. For additional information, refer to PMI in Section 418-01 .

 

[Johnbigdog]

1. NOTE: Module configuration is required when a new ACM is being installed.
   
   Upload the ACM configuration information to the scan tool. For additional information, refer to Programmable Module Installation (PMI) in Section 418-01 .

1. Remove the Front Display Interface Module (FDIM). For additional information, refer to Front Display Interface Module (FDIM) in this section.

1. Remove the 4 screws and the ACM .
   • Disconnect the electrical connectors.

1. To install, reverse the removal procedure.
   • Download the ACM configuration information from the scan tool. For additional information, refer to PMI in Section 418-01 .

The reason that I advise against this is that P.M.I. is an inhale exhale process. Meaning if there is incorrect data in the module in the first place, it will exhale the same data. This inhale starts when the vehicle session is started with I.D.S. so a normal P.M.I will not work too well at the moment.

The other possibility is that although the box works, it 8s possible that the I.D.S. will see that this box is not supposed to be in the car and not program at all. The I.D.S. will pull the part number of the module and look for the corect superseded software.

 

[Scott Milligan]

The reason that I advise against this is that P.M.I. is an inhale exhale process. Meaning if there is incorrect data in the module in the first place, it will exhale the same data. This inhale starts when the vehicle session is started with I.D.S. so a normal P.M.I will not work too well at the moment.

The other possibility is that although the box works, it 8s possible that the I.D.S. will see that this box is not supposed to be in the car and not program at all. The I.D.S. will pull the part number of the module and look for the corect superseded software.

It all seems to work fine so I'm going to just leave it as is. I like the mileage graphic indicator. On the home screen it just shows the moving graph. I dissected the old acm out of curiosity. The hard drive in these looks like a standard laptop 40 GB drive.

I paid $17 for the acm on Ebay by the way.

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[SHOdded]

That belongs in the Smithsonian LOL