callenrsue Posted September 6, 2010 Report Share Posted September 6, 2010 I have a 08 Edge Limited AWD I just bought it and the sub does not work at all no bass at all I have found where it is but I am not sure if there is an amp behind it or in the vehicle somewhere else. Does anyone have any troubleshooting ideas or am I missing somthing simple that can shut it off? I checked the fuse that owners manual said was for the sub still nothing I can't find anything in the owners manual about an amp or sub thanks for any help! Quote Link to comment Share on other sites More sharing options...
rwbronco Posted September 6, 2010 Report Share Posted September 6, 2010 (edited) I'd get a little voltage tester (never know when they'll come in handy) and see if the amp on the sub is getting any power (it should be one piece if I'm not mistaken). If it is - then it's the subwoofer unit and you'll need to buy another one. If it's not getting power - well then you'll have to cross that bridge when you get there. But your first step is to see if it's even getting power. Here's a PDF from the Ford Professional Technician Society (PTS... we don't get paper workshop books any more, we do it all online). Here's an image from the PDF if you'd rather just take a gander at it. (pdf is attached to post) S8VF0018.pdf Edited September 6, 2010 by rwbronco Quote Link to comment Share on other sites More sharing options...
rwbronco Posted September 6, 2010 Report Share Posted September 6, 2010 (edited) PS I didn't see if you had Nav or not. You can do a little self-diagnostic to see if the sub is actually not working or if you have it set low somehow and just can't hear it. If you don't have nav: Audio Systems Without Navigation Turn the Audio Control Module (ACM) on...this is your head-unit. Operate the audio system in radio tuner (AM/FM) mode. Press and hold preset buttons 3 and 6 for 3 seconds until the speaker walk-around test begins. The display indicates each speaker as it is tested. NOTE: If the speaker walk-around test is the only test required, this procedure can be stopped after Step 3 by turning the ACM off. Before the speaker walk-around test is complete, carry out any of the following actions: Preset Button Press Diagnostic Function Display Diagnostic Function Description Press button: 1 Diagnostic Function: ACM Self-Test Display: SELF TEST Description: The ACM carries out a self-test. At the end of the self-test, the display either indicates SELF PASS or scrolls through any DTCs present. Note that the self-test may not indicate all DTCs that are present. If DTCs are suspected, retrieve continuous and on-demand DTCs using the scan tool. Press Button 2 Diagnostic Function: View DTCs Display: NO DTCS, or scrolls through DTCs Description: The ACM displays any DTCs that are present. To scroll through the DTCs, press the TUNE UP button. If no DTCs are present, the display reads NO DTCS. Press Button: 3 Diagnostic: AM/FM Antenna Signal Strength Display: SIGNAL ### Description: The ACM displays the AM/FM antenna signal strength. To run this test, the audio system should be in AM radio tuner mode before entering the ACM self-diagnostic mode. Press Button: 4 Diagnostic: Software Levels Display: SOFT LEVELS Description: The ACM displays software levels for various components of the audio system. Knowing the software levels may not aid diagnostics. Press the TUNE UP button to scroll through the software levels. Press Button: 5 Diagnostic: Display Test Display: DISPLAY TEST, then all segments illuminate All of the ACM segments illuminate. Description: If the vehicle is equipped with an Front Display Interface Module (FDIM), the segments on the FDIM illuminate, rather than the ACM. Press Button: 6 Diagnostic: Retrieve ACM Part Number Display: RADIO CONFIG Description: The ACM displays the ACM part number, and various configuration levels. Press the TUNE UP button to scroll to the desired function. To exit the self-diagnostic mode, turn the ACM off. If you do have Navigation, it's basically the same except you have labeled buttons on the screen you can press instead of having to press preset numbers. It's a lot easier with Nav lol edit: spelling and formatting Edited September 6, 2010 by rwbronco Quote Link to comment Share on other sites More sharing options...
rwbronco Posted September 6, 2010 Report Share Posted September 6, 2010 Sorry for the third post in a row - but here's a PDF that might help you in testing to see whether the sub is bad or not. It's another PDF. Scroll down to Page 39/40 and refer to Pinpoint Test E. This is a much more technical test and if you're uncomfortable doing it or aren't sure what most of it means, take it by your local dealership. SAVF0003.pdf Quote Link to comment Share on other sites More sharing options...
callenrsue Posted September 13, 2010 Author Report Share Posted September 13, 2010 Thanks for the great info. sorry for not posting back right away I will let you know how I come out Thanks again. Quote Link to comment Share on other sites More sharing options...
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