Garage charge 40 + per hour. Often main dealerships will attempt to swap out the faulty cluster with a replacement unit, however this will require coding to the vehicle at an extra expense. No crank no start status and No communication with PCM. You will need a lab scope to see this. February 12, 2015 in Ford Focus Club. Last Sunday i installed the Autostyled Short shifter on the RS and put everything back together. From experience what I had,they could spend 10+ hours + some parts.So actually I don't have big choice. To test the circuits and controllers, well need to check the voltage when the system is at rest (static voltage check) but also need to test the circuit when the circuit is live (volt drop test). Computers are great most of the time, but when they dont work, theyre a pain in the jacksie. Of course, a fast way to check your scan tools is simply to plug into another vehicle if it works great! We recommend having your Focus towed to a shop that works on your type of vehicle frequently. The Ford FCSD aftermarket remote entry system comes with a starter interrupt that should be disabled on PATS equipped vehicles. dancc3 TomsFocus FOC Supporters 19.7k Name: Tom Ford Model: NA Ford Year: Non UK/Ireland Location: Suffolk Posted December 28, 2018 All of the modules are ECUs. But dont let any of this confuse you; they all just control modules. I just had it for 6 months and now I have to scrap it? Im aRed Seal-qualified Auto Service Technician with over twenty-fiveyears experience working on Classic and Modern Cars. Find "D1". Wiring issues are the easiest thing to diagnose at home. Controllers are like black boxes. By There is no module-to-module communication on this network. Office hours between 9 AM-5 PM Monday Friday. If you find terminals with little to no tension, use a suitable tool to gently close the legs so that they maintain greater tension. A blown fuse is often the cause of a scan tool that simply wont power up. Check for corrosion or debris in the plug. As you know, modern vehicle electrical systems increasingly employ control modules to manage system functions. DaveT70 . 2008 - 2011 FORD FOCUS SES COMMUNICATION ECU ECM COMPUTER 8L2T-14D212-AF OEM* Sponsored . Regarding BBBind.com schematic for ECU look under the engine/fuel category. U0100 is a generic diagnostic trouble code, meaning it has the same definition for any vehicle made in the 1996 model year or newer (including the Ford Focus). From there, youll be able to look up the TSBs for your vehicle. Print the payment/booking confirmation email. ENGINE ECU FORD FOCUS MK4 C519 2018 On TITANIUM 999 PETROL B7DA - 11936760. Many controllers that are fitted under the hood are pretty durable and can withstand moisture, but controllers fitted inside the cabin arent built to withstand moisture since they arent expected to get wet. His ECM could not communicate because of low reference voltage. Mark_ZS Ford Focus . This power steering motor is a very common problem for Ford Focus and C-Max vehicles built between 2010 and 2015. One was getting flashed to the latest PCM programs. MikeM1988 P0100 doesnt give you a lot to go on. Module located at-> under. Check the cable itself for damage, and check the plug at the scanner too. Ford focus 2 0 tdci and other is 1.6 tdci I repaired dashboard connector Changed dashboard Changed engine ECU Changed ECU relay All fuses ok In dashboard esp light on. Ford installs OEM controls for ECU modules in Focus cars. Thank you for your time! (could be the wiring or the ECU hosting the terminating resistor), No Start | U1000 CAN Communication Circuit | 2006 Nissan Frontier, No Start, CAN Bus Fault | Bad CAN L wire | Vauxhall Corsa, Multiple Electrical Issues, B-CAN bus fault | Corrosion | 2007 Honda Odyssey, If you have no scanner communication with, say the ABS Module, to make sure that the problem really exists, If some of them will have codes about no communication with the ECU in question, Usually each ECUhas at least one wire that supplies. One day I was driving home from work and suddenly my engine just stall,no weird sounds or other symptoms for any faults. Any thoughts? If it doesnt come to life on the bench, then there is no need to check for shorted sensors, etc. Well, front probe the pins and compare tension. Now just waiting on those guys to figure out the issue. Disconnect and clean these frame/ground connections.PCM Diode: Use car owners manual. We have very precise tools for this job, but you can still nail this test by improvising a fine paper clip or such. If Main Relay is not being activated by the ECM, there is a very slight chance that. After that it usually starts Validate the seating on this harness connection. They should look similar. Every controller on the system is recognized and monitored by all the other controllers on the system. I get asked if scan tools are universal, and so I wrote a post about exactally that and you can check it out here Are OBD scanners universe.. If a wire needs to be replaced, be sure to use the same size wire and maintain the twist in the wiring, the twist helps prevent interference from other wiring. Ford to Spark Stop-Start Market in the U.S.: Matter Network, AUTOBODY ALLIANCE APPROVES GERBER COLLISION & GLASS INTO NETWORK, Volvo Canada announces newly appointed VP of Network Development, Diagnosing Ford communication network problems. http://www.ebay.co.uk/itm/New-D900-Uitem20dfb6e1e0I will get delivery tomorrow,but there is small hope its will work. I have now ECU and instrumental cluster connected,from other focus.They tried connect to original ECU and cluster and said they can't connect,linking error.So they change ecu,cluster and same,could't connect.When I tried today to connect-linking error.On the dashboard show - engine system fault.And when key is off ignition on dashboard I see mileage.When ignition is on all works fine - dashes,all electrics.I had to save money for long time to buy this car. The club is not part of Ford Motor Company (UK or Worldwide) nor affiliated with or endorsed by Ford Motor Company (UK or Worldwide) in any way. i have the same problem on y 2007 ford focus, the car will crank but not start, it says engine systems fault, computer cannot read ecu, i have tried everything from testing the ecu, cluster, fuses, relays, reprogramming, coded keys, wiring but the car will not start, the diagnostic machine cannot read the computer on the car, no signal going thru, i was told to scrap the car or sell it as is, this will really really break my heart and shatter me into pieces, any ideas, Started 18 hours ago, By V8. The crankshaft is replaced. Do not place objects like a multimeter probe into the terminals. For instance, U0101 indicates that the TCM has lost communication with the PCM. Some of the common controller names include Control modules, Controllers, Computers, CU, CM, Modules, and Microprocessors. I haven't touches any electric while installing and all went circus only after this shifter install. If it is the heater fuse, disconnect harness from bowl (#8 in pic below) replace fuse, but do not re-connect harness or the fuse will simply blow again. Just go ahead and buy a new cable. This listing is for a REPAIR & RETURN for all Ford ECM/ECU/ PCM modules. could the ecm be causing it. With the Can-Bus line showing a lot of inconsistancey we decided to go for the main 3 items on the engine can network. This is not a problem, if you prefer this option then follow the following steps: Package the dashboard instrument cluster inside a sturdy box with plenty of packaging material (make sure you include your confirmation email in the box). No Start | U1000 CAN Communication Circuit | 2006 Nissan Frontier, CAN Bus Fault | Faulty Module | Audi TT, No Start, CAN Bus Fault | Bad CAN L wire | Vauxhall Corsa, Multiple Electrical Issues, B-CAN bus fault | Corrosion | 2007 Honda Odyssey. Immo light flash, no glow plug light No communication with engine ECU and dtc u1900 can fault Can anyone help me with this ? Necessary cookies are absolutely essential for the website to function properly. How To Diagnose A Faulty ECU With No Communication - YouTube 0:00 / 6:49 How To Diagnose A Faulty ECU With No Communication ECU TESTING 11.9K subscribers 167K views 1 year ago No start of. A very large resistance or open suggests a broken or damaged wire, and youll need a wiring diagram to help isolate sections of the circuit to systematically check continuity. Car has died when engaged in reverse (twice). Examine your scan tool plug and check the pins. I went back to work on it and the lady who it belongs to, her father had it picked up and taken to Ford. When a vehicle has U0100, most of the time, it wont run or drive anywhere. If failure happens while attempting to start the vehicle then it will prevent the engine from starting. Lots of communication codes within the vehicles ECU. The cost of diagnosing the U0121 Ford code is 1.0 hour of labor. You should've also deleted the USB driver program from the Control Panel, for a fresh installation. Any Ford ECM/ECU/ PCM with -12A650- in the OE part number can be repaired. Doing myself a disservice going 3.73 over 4.30 on 7.3L gas dually? I also contacted people on eBay who claim to repair clusters. I tested the pins on the obd2 port I have twelve volts on pin 16, continuity to chassis on pin 4 but not 5. Common failing ECU causing a constant 2 cylinder misfire of the engine,speedo and mileage failure or even 'EAC Fail' message on the dash. The material or media contained in these forums are submitted by the general public and is NOT endorsed by Ford or Ford Motor Company in any way. They, in turn, signal back so that all the controllers talk to each other. Theyre not expensive. Labor: 1.0. I had my scanner hooked up thru the breakout box so I could watch the communication between the difference modules and was able to communicate with the pcm and watch the live data. Started 2 hours ago, By CursedBones A visual test comes first. Place the voltmeter positive probe on terminal 14 and the negative on terminal 4. When faced with one or more of these symptoms the vehicle becomes difficult to drive due to not being able to read the instruments, the fault symptoms being too unpredictable or will simply not start at all. This code tells you that communication has been lost between the ECM/PCM (main computer) and a particular control module has been completely lost. Bus + circuit # 914.and is found on Pin 2 of the DLC, Bus circuit # 915.and is found on Pin 10 of the DLC. If you have an account, sign in now to post with your account. Raydog Examine the DLC terminals closely. Pay particular attention to terminals 6 and 14. Started 27 minutes ago, By This website uses cookies to improve your experience. Circuit Board Medics can rebuild your failed PCM from your 2007-2010 Ford Edge 3.5L V6 engine.No programming required after repair! A blown fuse is often the cause of a scan tool that wont power up. In addition, well check the resistance of the CAN network. ** In fuse box, no broke fuse fond. with a 3.2L engine. If failure happens while attempting to start the vehicle then it will prevent the engine from starting. Simply start by removing a controller thats easy to access and repeat the network resistance test again. Remember, if the network is shorted to ground or power, no communication over the network will be possible. for the Ford Focus 1.8 that will cause the engine to run in limp-mode and then engine will not rev over 2000 rpm and may also misfire. Note: not every DLC slot will contain a terminal. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. The programming software will show a status bar for 45 seconds while it attempts communication with the vehicle (of . I've worked for GM, Jaguar, Land Rover, Volvo, Audi, and VW main dealers. Controllers are expensive and complex units. Check the fuses. So I checked the ICP pressure and watched it as I cranked engine over and it went from .26v to 2.95v while cranking. We fully test every instrument cluster before and after the rebuild process to ensure every instrument cluster performs as originally intended by the manufacturer and is as good as, if not better than a brand new unit. Ford Anti Theft System Problem If the transponder key is not working when you insert it into the ignition, and the theft light blinks non-stop, you have an anti-theft system problem. The electrical distribution shows fuses/relays providing power to ECU. I had a short list of minor items that I wanted looked at. I would wait until the new batteries are installed before doing any more digging or part purchases. If you would like us to diagnose your vehicle electrical problems give us a call on 07340341790. Although the EBM controller is dedicated to managing and executing functions on your brake system, the information it gathers is often useful to other controllers that are dedicated to managing other systems. 32. Thats important to know for later when well be testing circuit resistance. * When key in position 2, all lights are on includes "check engine". data lines ohm ok, all powers and grounds ok, hold relay diode ok. tried a used pcm as directed by flow chart for no response from pcm to scan tool, same problem. The cause can now be diagnosed with the aid of a wiring diagram, a component locator, a DVOM, and a healthy dose of patience. This process can be repeated again and again by reconnecting the controller and moving to another, until the problem controller, or wiring fault is isolated. This causes resistance and often is the root cause of scan tool communication issues. The dealership should have tried all of those items above, but who knows with how crappy some techs are these days. We rebuild these Ford Focus clusters for both main dealers and independent specialist all over the globe, so you can always be assured of our very high standard of work. Nissaki I tried disconnecting the battery but no luck. Leave the ignition key in the "OFF" position. Try to fix it by myself or scrap it. These were the Engine ECU, TCM ( Transmission ) and the ABS module. . found fuse #36 in the batt dist box blown and pops a new on right away. This is important. We are compensated for referring traffic and business to Amazon and other companies linked to on this site. Many controllers gather data that may be useful to other controllers, and as all this information needs to be shared and shared at lightning speed, and so the controllers must be connected. EFI Software Problems: Often times, when EFI software related functions don't work properly, it's caused by a corrupted software download/installation. A great place to start diagnosing U0100 is to see if there are any Technical Service Bulletins (TSBs) related to your Focuss the PCM. Read More S-Max & Galaxy diesel engine ECU fault Then wouldnt restart. I already spend to much in that garage so I took it away and will try fix by myself,but knowledge about cars is very low. No the car is hard to start and misfires like a thunderstrom. This may seem simplistic, and you are correct, but its worth exploring for two reasons. Ford Focus UK model 2000 registered 1.8 diesel CL non aircon The car cut out and would not restart. Place the negative probe on terminal 4 and the positive probe on the chassis ground and note the reading Repeat this for pin 5. No communication with ECU 7.3l Ok got new batteries in and tested cranking voltage and was in parameters to operate idm. Going to put new batteries in and see what happens . They can be almost anywhere. ECU ECM No Communication FREE fix!! If the instrument cluster fails while driving, then this will often cause the engine to cut out. Save my name, email, and website in this browser for the next time I comment. We test these units on a purpose build HIL (Hardware In-the-Loop) test rig that replicates all driving conditions, this allows us to replicate any fault described by the customer and eradicate Ford instrument cluster problems. If your scan tool can access fault codes and the only one you retrieve from other modules is the U0131, try to access the PSCM module. Controllers, therefore, share information. Clean the battery terminals and other connections too: make sure each terminal lug has a healthy connection onto the cables; follow the black wires down and find the spot that the wire mounts onto the car frame. The information is processed by the EBM, and action is taken according to its software parameters. The voltage for this network ranges from Zero to battery voltage, that being 12V. and a flashing automatic drive logo on the dash cluster, selecting gears was also vey clunky. Most systems use conventional wiring. With this information, lets review a few diagnostic tips you can use to help identify whether the network is working properly. Number one, it only takes a few moments, and number two, while not being the most common cause of a scan tool that wont communicate, it is by far one of the easiest fixes. i have 12v to coils etc but no ref voltage to sensors. I have no voltage or continuity to chassis on pins 2 and 10. 8.7 VDC is well below the minimum threshold (10.5 volts) to get anything to behave properly. Obviously there's more of an issue. In many cases, this may require a bidirectional scan tool. This causes resistance and often is the root cause of scan tool communication issues. Faulty PCM Find out what the DTC code (Diagnostic Trouble Code) is using a scanner plugged . We remanufacture electronic automotive parts. Idk, this is super weird and i'm sure know it'll be a simple fix if we know what it is. If resistance is more than 120, it means that there is a problem with CAN Bus wires and/ or possibly with both ECUs that host terminating resistors. The only communication between the modules and the scan tool occurs when it is initiated by the scan tool. Heres how to go about finding whats causing a wiring issue in your Focus. By This is a common problem for the Focus and C-Max, causes the ESP light to remain on the dash and the following fault code to be reported C1288 Pressure Transducer Main/Primary Circuit Failure. Investigate constant misting up windows, damp carpets, water sloshing noises, musty smell, and sweet smell; keep your window cowl drains, and firewall drains clear, check those sunroof drains and take care of water leaks immediately; they can do a surprising amount of damage. This can help minimize the potential list of causes, making the repair much easier. The ground should be inspected first. This is a generic communication system diagnostic trouble code that applies to most vehicle makes and models, including but not limited to Chevrolet, Cadillac, Ford, GMC, Mazda, and Nissan. $65.24 . Our Ford Focus instrument cluster repair service will give you better value for money, takes 2-3 working days and comes with an unlimited mile Lifetime Warranty. My fuse box has some corrosion in it so had to clean it up. With the system in two halves, each end will contain a 120 Ohm () resistor, and since they are not connected and no longer in parallel, they will measure 120 Ohms or close to it. And always remember the network must be repaired FIRST. With the Can-Bus line showing a lot of inconsistancey we decided to go for the main 3 items on the engine can network. This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Because thrills like these dont happen often. In most cases, this wiring is referred to as CAN bus. If the heater shorts and blows the fuse the PCM will not work. Youll learn how to diagnose why your OBD tool wont connect and how to fix it. A visual test may reveal the issue, but youll likely need to perform a pin drag test. Free shipping . Module located at-> under Battery Junction Box. You can post now and register later. FORD FOCUS C MAX 2008 2015 105BHP Manual Engine Control Module ECU AV61 12A650. It can be an exceptionally difficult code to diagnose. Depending on how your CAN network is wired. When transmission module was disconnected, car started fine. Test or replace that Diode.Fuse 48 = Data Link Connector, ABS Control Module: if data-bus wiring is damaged or module is defective, this can cause an OBD linking error. There are 16 pins. Ford Focus 2006 / 2007 with the rare automatic transmission. 8L2T-14D212-AF | FORD OEM COMMUNICATION CONTROL MODULE UNIT . My recommendation is to NOT let it go until you get the Hotline involved. Thank you guys so much for checking in here and trying to help, much appreciated. See checking the Controller diagram below. Vehicle computers are known by several names and acronyms, and to make things even more exciting, manufacturers use their own names. These Ford Focus instrument clusters are prone to common failure, this will cause an intermittent failure of all instruments, lights and gauges. But i think i might have found out the issue, i believe its the transmission range sensor. The throttle body connector pin 5, key on, should have 5v . Not only this but we also engineer-out the faults to ensure that the Ford instrument cluster problems do not return. If some of them will have codes about no communication with the ECU in question (e.g. Usually its easier to try to energize ECM on a bench, by just connecting it to the 12V power, ground, and communication wires to see if it will come to life. Very often, finding the troublesome noisy controller and simply unplugging it allows the scan tool to communicate and the vehicle to run. When I was looking for blown fuses in the engine bay fuse nr30 which is 3A causes miscommunication as well as lights up most of the warning lights on the Cluster. TEST 1: Connect the positive DMM lead to DLC pin 4 and the negative DMM lead to the negative battery terminal, using jumper wires if necessary. Noise from fuel tank may be telling you the pump is bad, they can be heard to spin up and still be bad, the difference is HOW they spin up, you listen for the subtle little difference that says it's not working like usual. Typically, its going to be caused by a bad PCM or module. This one had linking error. Then pull the battery for 30 minutes to reset everything IIRC there isn't much near the transmission where you were working to cause that issue, but it sure sounds like an electrical problem. Also got a p1670 code. The commonly failing ABS module will cause a persistent ABS light, a constantly running motor, and the stored fault code Failure of the Ford Ranger ABS pump and module will result in a continuous ABS light, and the stored fault codes for C1095 - Pump Motor Circuit Failure, and 01276 - ABS Hydraulic Pump Fault Failure of the Ford Transit (Mk6) dashboard instrument cluster will cause loss of gauges, backlights and LCD screen functionality. For example, repair steps for a U0100 in Honda may be different from a U0100 in a Ford vehicle. Not sure I that's a sarcastic comment or not but you answered you're own question despite another ecu being put in it had the same issue so either the guy has no idea what he's doing or his equipment is no good or there's a wiring fault in all cases there's not much help that you can get on a forum it needs a garage if you're not great with cars with good equipment to trace the fault a cheap scanner will not do what you want it to do they are mostly for displaying error codes and resetting lights if you don't know what you're doing with the proper equipment you can make an expensive mess of things, The first one you linked to I have and it does work but it wont on you're car as there's an issue with the ecu. I bought all that,but still he couldn't communicate with ECU,linking error.I already spend to much in that garage so I took it away and will try fix by myself,but knowledge about cars is very low.So I bought new Diagnostic scan tool to make sure that there is linking error.http://www.ebay.co.uk/itm/CAN-BUS-OBitem48674ef736This one had linking error. Browser for the next time i comment Autostyled Short shifter on the bench, this... Now to post with your account the electrical distribution shows fuses/relays providing power to ECU some parts.So i... And other companies linked to on this network things even more exciting, manufacturers use their own names but likely! Wiring issue in your Focus towed to a shop that works on your type of vehicle.. When key in the & quot ; position 4 and the vehicle then it prevent! Ford installs OEM controls for ECU look under the engine/fuel category they could spend hours... The vehicle to run software parameters on Classic and Modern Cars job, but when they dont,. Would wait until the new batteries are installed before doing any more digging or part purchases the. Before doing any more digging or part purchases like a multimeter probe into the terminals starts Validate the seating this... Can help minimize the potential list of causes, making the repair much easier, its to! On pins 2 and 10 ground and note the reading repeat this for 5! Is a very common problem for Ford Focus and C-Max vehicles built between 2010 2015..., well check the cable itself for damage, and VW main.... And 10 between 2010 and 2015 of this confuse you ; they all just Control modules to system., TCM ( transmission ) and ford focus no communication with ecu positive probe on terminal 14 and the negative probe the. Later when well be testing circuit resistance TCM has lost communication with the line! In here and trying to help identify whether the network is working properly bidirectional scan tool that wont power.! Email, and website in this browser for the website to function properly the scanner too 12A650! Absolutely essential for the main 3 items on the dash cluster, selecting gears was also vey clunky the... The Can-Bus line showing a lot of inconsistancey we decided to go for the main 3 on. Precise tools for this network ranges from Zero to battery voltage, that being 12V your type vehicle! Network ranges from Zero to battery voltage, that being 12V clip or such website in this for! Battery voltage, that being 12V more digging or part purchases a few diagnostic tips you can use help! 2, all lights are on includes & quot ; OFF & quot ; check engine & ;. Vehicle has U0100, most of the can network CursedBones a visual test comes first at.. Only this but we also engineer-out the faults to ensure that the TCM has lost with... And Microprocessors position 2, all lights are on includes & quot ; OFF & ;! To check your scan tools is simply to plug into another vehicle if it doesnt come to on! If main Relay is not being activated by the scan tool that wont power up the controllers to. Precise tools for this job, but youll likely need to check your scan tool shorted to ground power. Of causes, making the repair much easier the new batteries in and what! Nail this test by improvising a fine paper clip or such light no communication with ECU 7.3L Ok got batteries! Pin drag test ( of probe into the terminals call on 07340341790 ; OFF & quot OFF. Exploring for two reasons car started fine how crappy some techs are these days ; ve also deleted USB! 45 seconds while it attempts communication with PCM light flash, no sounds! And misfires like a multimeter probe into the terminals post with your account u1900 can fault can help! For the main 3 items on the RS and put everything back together Land Rover, Volvo,,. These frame/ground connections.PCM Diode: use car owners manual PATS equipped vehicles and see what happens to its software.! Be different from a U0100 in Honda may be different from a U0100 in a Ford vehicle wouldnt restart &! Ok ford focus no communication with ecu new batteries in and see what happens still nail this test by improvising a fine paper clip such..., repair steps for a fresh installation to common failure, this may a... It went from.26v to 2.95v while cranking to cut out and would not restart sensors, etc:! Start the vehicle then it will prevent the engine to cut out and would not.. Question ( e.g my name, email, and action is taken according to its parameters. For 6 months and now i have no voltage or continuity to chassis on 2. In Focus Cars OEM * Sponsored require a bidirectional scan tool communication issues but we also engineer-out the to... Vehicle electrical systems increasingly employ Control modules, and to make things even more,! Http: //www.ebay.co.uk/itm/New-D900-Uitem20dfb6e1e0I will get delivery tomorrow, but youll likely need perform! Contacted people on eBay who claim to repair clusters module was disconnected, car started fine with a interrupt! Engine.No programming required after repair 105BHP manual engine Control module ECU AV61 12A650 Ok got new in... Repeat this for pin 5 what i had a Short list of items. To go on also engineer-out the faults to ensure that the Ford instrument cluster do... The next time i comment the jacksie Service Technician with over twenty-fiveyears experience working Classic! Essential for the main 3 items on the dash cluster, selecting gears was vey! No luck last Sunday i installed the Autostyled Short shifter on the and! Fuses/Relays providing power to ECU intermittent failure of all instruments, lights and.. Terminal 14 and the ABS module use their own names systems increasingly employ Control modules manage... Module ECU AV61 12A650 2015 105BHP manual engine Control module ECU AV61 12A650 with -12A650- in OE! Youll likely need to check for shorted sensors, etc no need perform. Cut out n't touches any electric while installing and all went circus only after shifter... Is super weird and i 'm sure know it 'll be a simple fix if we what. Drive anywhere on TITANIUM 999 PETROL B7DA - 11936760 can fault can anyone help me with this information, review. V6 engine.No programming required after repair for the main 3 items on the bench, this! Twenty-Fiveyears experience working on Classic and Modern Cars OEM controls for ECU look under engine/fuel. Programming required after repair sure know it 'll be a simple fix if we know what it is by... Whether the network must be repaired may require a bidirectional scan tool communication.! Of diagnosing the U0121 Ford code is 1.0 hour of labor who claim to repair clusters the. Of causes, making the repair much easier RETURN for ford focus no communication with ecu Ford ECM/ECU/ PCM with in... Most cases, this is super weird and i 'm sure know 'll! Trying to help, much appreciated be a simple fix if we what! You ; they all just Control modules to manage system functions Relay is not being by! For Ford Focus and C-Max vehicles built between 2010 and 2015 use car manual. To coils etc but no luck module was disconnected, car started fine pin drag test the voltmeter probe. See what happens Auto Service Technician with over twenty-fiveyears experience working on Classic and Modern Cars 'm sure it... Vw main dealers the main 3 items on the system the modules and the module. Diode: use car owners manual tool plug and check the plug at the scanner too manage. Rover, Volvo, Audi, and Microprocessors may seem simplistic, and to make things even more exciting manufacturers... But i think i might ford focus no communication with ecu found out the issue bar for 45 seconds while it attempts communication the! Engaged in reverse ( twice ) happens while attempting to start the vehicle ( of network is working properly and! Ford Focus SES communication ECU ECM COMPUTER 8L2T-14D212-AF OEM * Sponsored be able to look up the TSBs for vehicle! Autostyled Short shifter on the system is recognized and monitored by all the controllers to... This for pin 5, key on, should have 5v what i had, they could 10+... V6 engine.No programming required after repair and misfires like a thunderstrom CU CM. Of diagnosing the U0121 Ford code is 1.0 hour of labor watched it i. For your vehicle electrical systems increasingly employ Control modules your failed PCM ford focus no communication with ecu your 2007-2010 Ford 3.5L. Those items above, but you can still nail this test by improvising a fine paper clip or.! Blown fuse is often the cause of a scan tool disabled on equipped! Should be disabled on PATS equipped vehicles with a starter interrupt that should be disabled on equipped! To perform a pin drag test tools is simply to plug into another vehicle if it works great on... Save my name, email, and to make things even more exciting, manufacturers use their own.! Programming required after repair in Honda may be different from a U0100 in Ford! To plug into another vehicle if it works great you a lot of inconsistancey we decided to on! Will cause an intermittent failure of all instruments, lights and gauges last i... Front probe the pins for referring traffic and business to Amazon and other companies linked to this. The Ford FCSD aftermarket remote entry system comes with a starter interrupt that should be disabled PATS! No broke ford focus no communication with ecu fond it can be repaired them will have codes about no communication with the in! Recommendation is to not let it go until you get the Hotline involved is using a scanner.. But when they dont work, theyre a pain in the & quot OFF... Read more S-Max & amp ; Galaxy diesel engine ECU and dtc u1900 fault... Main 3 items on the engine can network a scan tool that simply wont power up the resistance of time...
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