ford focus no communication with ecu

Try to fix it by myself or scrap it. 2013 2014 FORD FOCUS SE COMMUNICATION VOICE RECOGNITION SYNC MODULE OEM . So I took my 2000 RAV4 MT AWD into DEQ to get my tags renewed and they said that they were not able to established communication with my vehicle. That is RIDICULOUS, Cheryl. 8L2T-14D212-AF | FORD OEM COMMUNICATION CONTROL MODULE UNIT . Started Yesterday at 03:13 PM, By This using Ohms law makes the measurable resistance of 60 ohms. As you know, modern vehicle electrical systems increasingly employ control modules to manage system functions. Should see ECU pin outs. You can disconnect the connector at the module as a test. Tip. This isnt a measurable result. 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. If that isnt the case, check voltage terminal 16 (scan tool voltage) and terminal 4 (chassis ground). This causes a no-start issue. They contaminate the CAN network with constant erratic voltage. Lets begin with the Ford network and apply what we have learned earlier to isolate the cause (s) of a network systems failure, staring with the Standard Corporate Protocol (SCP) which we will quickly review. Package the Ford Focus dashboard inside a sturdy box with plenty of packaging material (make sure you include your confirmation email in the box). Every controller on the system is recognized and monitored by all the other controllers on the system. If, however, your scan tool wont even power up when you hook it up, then check out this post, OBD scanner wont turn on it covers the simple fix in detail. Checking your vehicles socket is a little more work but not much. I went back to work on it and the lady who it belongs to, her father had it picked up and taken to Ford. In a long-winded way, Im saying your vehicles OBD connector, also known as the DLC (Datalink connector), may be damaged from possibly years of OBD scanning and, dare I say it, Front probing.. If you dont have the VIN handy, click the vehicle tab, and you can search by year, model, and manufacturer. They are part of a network of information. The Ford FCSD aftermarket remote entry system comes with a starter interrupt that should be disabled on PATS equipped vehicles. Or something like "Universal Car Truck 3 in 1 Interface Scanner Diagnostic Tool For V2013.03 CDP+ " that is arround 50 pounds is needed? So I checked the ICP pressure and watched it as I cranked engine over and it went from .26v to 2.95v while cranking. i dont have a wiring diagram for that circut. Started 20 hours ago, By : 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 first two steps are about getting as much information as you can and eliminating possibilities. The PCM may use this information to cut power to the engine when the vehicle is skidding. Most controllers are wired in series, with sub-controllers (Side streets off the main street); knowing which module is on main street and which is a side street is crucial to efficient resistance testing. Ford Focus - ECU Charge Control Kaput - elekie&a/c doctor. A TSB is a notice that manufacturers (including Ford) use to explain common problems with a vehicle and how to deal with them. A visual test comes first. Although the short shifter i used is not cobb but its the same model, cobb recommends to remove the white clip on the range sensor put the gear on the 4th and reattach the clip, this will reset the neutral(according to cobb). Like i said i couldn't think of anything else that could've went wrong. Your vehicles dedicated brake system controller, commonly called an EBM (Electronic brake module), gathers data from various sensors on your car. Reaching into a vehicle, blindly fitting, or pulling the scanner cable is a normal everyday occurrence. This, of course, is only possible if you have a good working wiring diagram. Most good scanners will have a detachable and, therefore, replaceable OBD cable. Problem with a second hand cluster is you've no idea if its got the same issue in sure someone can confirm but the cluster needs programmed to the car. Ford Focus 2006 / 2007 with the rare automatic transmission. If unable to access codes for the PSCM module, then the U0131 code that the other modules are setting is . Were using our ability to feel the difference in tension from one terminal to another. We remanufacture electronic automotive parts. Marteinn ENGINE ECU FORD FOCUS MK4 C519 2018 On TITANIUM 999 PETROL B7DA - 11936760. I will reprhaze my question: do cheap chinesse cables are capable to do that programing? I've worked for GM, Jaguar, Land Rover, Volvo, Audi, and VW main dealers. DaveT70 No the car is hard to start and misfires like a thunderstrom. I went and picked it up and it wouldn't run and had to have it towed. Drive train problem. If you buy one, drive it hard. Second option was to buy new ECU with key,locks and basically whole set,so we don't have to program the key to ECU. To diagnose this network, you will need a high-impedance DVOM and a scanner. Any ideas what fault could be to my ford? We dont know whats going on inside them, and we dont really care. Ok I bought an OBD2 breakout box to test the dlc connector values. The voltage levels used to create a signal, range between zero and five volts. Many tools offer free software upgrades. U0100 will often appear with other control module-related codes. Obviously there's more of an issue. Moisture caused by water leaks is a common cause of failure. Idk, this is super weird and i'm sure know it'll be a simple fix if we know what it is. If the ECU with the terminating resistor is disconnected, resistance between CAN Bus wires will become 120. The first two steps are the due diligence that you should do to confirm that its not likely that another issue would be causing U0100. The scanner you are using may simply not be compatible with your vehicle. *** I have used Ancel AD410 and O'Reilly store's OBDII scanners, both were not communicated to ECU. Vehicle ignition should be turned on (Pos II). Check terminal 16 and terminal 5 (signal ground) also. $55.00 . The cost to diagnose the U0155 FORD code is 1.0 hour of labor. A blown fuse is often the cause of a scan tool that wont power up. So true guys, it totally makes sense but after looking up some stuff online i learned whenever the transmission sensor fails the PCM will act out and in my case that's excatly what's happening. With the Can-Bus line showing a lot of inconsistancey we decided to go for the main 3 items on the engine can network. Also got a p1670 code. As said, vehicles employ lots of controllers. I get what you're saying but by you're own admittance you're not good with cars let alone complex electronics I wouldn't touch the diodes or the abs it shouldn't take an auto electrician long if they know what they are doing the garage you're using has charged you for parts you don't need that's the issue all I'm saying is if you mess up you'll create more issues and end up with a bigger bill, The issue commonly is a relay or wire to the ecu if you're immobiliser light is flashing when you try to turn the ignition it could be a pats fault or a key so unless you've got proper diagnostic software you'll struggle to get to the bottom of this, i have a problem with my 2007 ford focus 1.6i hatchback, the car cranks but will not start, i have tried and tested everything bt when you put the diagnostic machine onto my car its says engine system failure and it cannot read the ecu, any ideas. I went and picked it up and it wouldn't run and had to have it towed. I had to save money for long time to buy this car. 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. I just had it for 6 months and now I have to scrap it?Any ideas what fault could be to my ford?Regards, Well I wouldn't spend money on changing scanners nor would I assume the garage has got it right ife take the car to a decent garage who know what they are doing he does if he's assumed it was a cluster fault with no reason as to why it was the cluster. I also contacted people on eBay who claim to repair clusters. 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. The ground should be inspected first. Jun 26, 2015. Before you start chasing the wiring issues. 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. If failure happens while attempting to start the vehicle then it will prevent the engine from starting. Well place a fine metal tool between the pins and feel the resistance when we remove it. Typically, its going to be caused by a bad PCM or module. If all controllers talk at once, messages are lost. You will notice the immobilizer light flashes continuously when the instrument cluster fails and the mileage reading will only show dashes (-------) instead of the mileage. P0100 is difficult to diagnose, even for an experienced automotive technician. 01130 - ABS Operation Implausible Signal. Now just waiting on those guys to figure out the issue. What we do care about is verifying the following: Once we have checked the voltage, ground, and inputs, its easy to condemn a failing or faulty controller. . Calling one failed without doing the proper test can be costly. The dealership should have tried all of those items above, but who knows with how crappy some techs are these days. 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. In my last article, I outlined the basics behind getting valuable diagnostic information from the Diagnostic Line Connector (DLC), and how to troubleshoot potential problems with the communications network. I will go step by step. 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. Started 20 hours ago, Ford Owners Club Im passing it on. * When key in position 2, all lights are on includes "check engine". Then, with the ignition switch OFF or ON, there should be NO voltage on the network. Wiring issues are the easiest thing to diagnose at home. We then went digging for the powers and grounds to this module. Place the voltmeter positive probe on terminal 6 and the negative on terminal 4. This ECU is a common failureespeciallyfor 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. There are 16 pins. 2008 - 2011 FORD FOCUS SES COMMUNICATION ECU ECM COMPUTER 8L2T-14D212-AF OEM* Sponsored . This one had linking error. Ian Keys This power steering motor is a very common problem for Ford Focus and C-Max vehicles built between 2010 and 2015. You can disconnect the HID/DRL connectors or fuses as a test. Its very cheap and there is big possibility its doesn't just work. Finally, hook up the scanner to the DLC, and observe the voltage reading on the DVOM. Going to test/replace relay as needed and go from there. View Digital Edition Browse Print Archives. Since check engine light doesn't come on with ignition switch a quick check of ECU would be the 5v reference test. zr. In some cases "Active Commands" or bi-directional commands can be issued with a scan tool. Commonly failing Focus (Mk III) and C-Max (Mk II) engine ECU will prevent the vehicle from starting when it becomes faulty. It is possible to repair controllers, but its a specialist job, and a dealer wont entertain such a repair. Started 27 minutes ago, By 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. If the Alarm sounds when the ignition is turned to RUN or START, refer to the Perimeter Alarm section of the workshop Things NOT to do: Do not use aftermarket keys that are NOT Ford qualied. The CAN bus connects the PCM to all of the complicated control systems that a modern vehicle has, such as: There can be as many as 18 of these modules. I can help you Contact me PM Reply JustJames Copyright 2023 ECU Testing LTD. All Rights Reserved. Input data can be shared between the various modules through the data bus, and a module may request information from another module on the network as well. Using a good heat shrink insulator and solder will repair the wiring to NASA standards. 2014 FORD FOCUS 2.0L ECM ENGINE COMPUTER PCM ECU LOCATION Mr talented Reid 5.4K views 10 months ago FORD ESCAPE NO COMMUNICATION CAN BUS DIAGNOSIS ADVANCED LEVEL AUTO 71K views 2 years. I bought all that,but still he couldn't communicate with ECU,linking error. Next, well pin-drag test the terminals. Then pull the battery for 30 minutes to reset everything. 2014 Ford Focus Se 2.0L (Lot# 64456922, VIN: 1FADP3F27EL204541). The other controllers and scan tools cant understand this constant gibberish and simply dont get a chance to shake hands with the other healthy controllers, as the CAN lines are always busy. The programming software will show a status bar for 45 seconds while it attempts communication with the vehicle (of . Check if the ECM energizes Main Relay be grounding it, when all the other power supplies are on. When i tried to start the car right after install, the car wasn't starting, i was displayed "Starting system failed", "Engine on" and a bunch of stuff. The fault could also, of course, be a wiring issue between the suspected faulty controller and the network. I never did the cable re adjustment when I installed my shift plate and curious if it could really cause an issue. Lots of communication codes within the vehicles ECU. Well, front probe the pins and compare tension. You cannot paste images directly. If, on the other hand, resistance is lower or higher than expected but not open, then a faulty controller is a likely suspect. ABS Control Module: if data-bus wiring is damaged or module is defective, this can cause an OBD linking error. The throttle body connector pin 5, key on, should have 5v . . You can disconnect the connector at the module as a test. We are compensated for referring traffic and business to Amazon and other companies linked to on this site. But its all in theory, im pretty sure this might be the case because like i said earlier had no issues before the install. You will need a lab scope to see this. The readings between 1.5 and 2.5 volts indicate normal. After few tries to start it, it would not even turn over. Car has died when engaged in reverse (twice). with a 3.2L engine. Controllers are like black boxes. I have tried several scan tools with the same result no communication. This website uses cookies to improve your experience. Many older vehicles combined the PCM and TCM into one unit. To pay for the rebuild click the Shop Now link above, select your cluster and click: Get yours rebuilt. Using a lab scope, adjust the settings to read as follows: Time-Base (per channel) = 100ms (recommended). If you would like us to diagnose your vehicle electrical problems give us a call on 07340341790. How to Diagnose ECU Communication Issues? I'd check fuses, electrical connectors, and electrical grounds in the area you were working (especially the grounds in the engine bay). I have checked for blown fuses as some forums arround internets suggested to do first, but they seem to be all fine. Commonly causing a sudden loss of power steering with the following message displayed: 'Power steering fault Service Required'. U0100 is a generic trouble code, which means it can be seen in various makes and models. AUTOMATIC. 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. Examine your scan tool plug and check the pins. 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. 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). Send us your package by tracked courier (the shipping instructions are on the confirmation email). 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). Ford Transit Custom Autowatch Ghost Fitted Louth, Ford Fiesta MK7 1L Ecoboost Stage 1 Remap Skegness. By There are thousands of auto diagnosis articles on this site, and weve only recommended this on a few of these codes. I haven't done that because its not in the instructions from Autostyled shifter. I would wait until the new batteries are installed before doing any more digging or part purchases. As an alternative, consider shipping just your controller to a specialist control module repair centers, they will test and repair your controller without removing its software, and so once repair and returned in the mail its a plug and play type deal. With the ignition switch OFF, you should have the voltage readings that were mentioned earlier. The PCM (Powertrain controller manages engine and transmission) uses basic data like vehicle speed to perform timely fueling or gear change decisions. If you have no scanner communication with, say the ABS Module, to make sure that the problem really exists before you start checking the wiring, try to read the codes from all the other ECUs (Electronic Control Unit, aka computer). Ford Focus 1.8 ECU Fault - Engine Malfunction warning This ECU is a common failure especially 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. Try logging on to your scan tool makers website. [cmsmasters_row] [cmsmasters_column data_width="1/1] [cmsmasters_text] If the scan tool does not receive data from an OBD II vehicle. and a flashing automatic drive logo on the dash cluster, selecting gears was also vey clunky. Lots of communication codes within the vehicles ECU. In many cases, this may require a bidirectional scan tool. Started December 13, 2022, By When writing this post, I assumed your scan tool powers up when you plug it into your vehicles OBD port, but it just wont connect. 97 it's a, I have a 2007 h3 hummer base model. Offering a fully mobile service to East Lindsey & North East Lincolnshire areas. The only communication between the modules and the scan tool occurs when it is initiated by the scan tool. Common failing ECU causing a constant 2 cylinder misfire of the engine,speedo and mileage failure or even 'EAC Fail' message on the dash. When a vehicle has U0100, most of the time, it wont run or drive anywhere. Free shipping . Well, front probe the pins and compare tension. 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. Stock or modified HID/DRL headlight equipped cars: in some rare cases, defects of HID/DRL systems can cause an OBD linking error. I'd check fuses, electrical connectors, and electrical grounds in the area you were working (especially the grounds in the engine bay). Check for corrosion or debris in the plug. This code tells you that communication has been lost between the ECM/PCM (main computer) and a particular control module has been completely lost. I put my scanner on it again and have no communication with ECU again. Im a mechanic, and while were known for our MacGyver-type skills, we may not be generally prized for our finesse. Linking error.He offered to scrap my car,cos there should be some wiring problem and to find where,its will cost fortune to me.Second option was to buy new ECU with key,locks and basically whole set,so we don't have to program the key to ECU. 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. The crankshaft is replaced. Alex.S Place the key in the backup slot . This unit was known as the ECU. 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). Thats important to know for later when well be testing circuit resistance. While the key is off, attempt to connect with the vehicle using your tool's software. 01276 - ABS Hydraulic Pump. Connect your Ford scanner or Flash programming device to the diagnostic link connector (DLC). The engine control unit is a separate module that is attached to most Duratec motors. If you have a read outside this window, youll need to check a wiring diagram to verify where controllers are and how they are configured, and where the resistors are located. Find "D1". Im aRed Seal-qualified Auto Service Technician with over twenty-fiveyears experience working on Classic and Modern Cars. Mechanic told to me its instrumental cluster fault.So I bought it second hand from. First, hook up the DVOM (positive lead) to Pin #7 into the back of the DLC connector, the ground lead attached to the chassis. '17 SG RS1 built 01.06.2017, sold 9.21.17, home 2.24.18. Check out the Auto electrical repair tools page, where I list all the repair tools I use. Both tests should read less than .2 volts. The diagram, at left, reveals a problem with the network. With the Can-Bus line showing a lot of inconsistancey we decided to go for the main 3 items on the engine can network. A wiring diagram will be needed for some of these tests as to how the CAN network is wired will predict some of the readings we should expect. Not only this but we also engineer-out the faults to ensure that the Ford instrument cluster problems do not return. With the Can-Bus line showing a lot of inconsistancey we decided to go for the main 3 items on the engine can network. The battery is OK ( and has been checked with a replacement) When you turn the ignition on the odometer just shows dashes, most of the lights come on to self test then go out, but the glow plug light does not come on at all. In most cases, this wiring is referred to as CAN bus. His ECM could not communicate because of low reference voltage. Controllers are expensive and complex units. A visual test comes first. You have to disconnect the battery cables and hold them together to discharge the capacitors. However, they do it at lightning speed. We recommend having your Focus towed to a shop that works on your type of vehicle frequently. Hello.I have Ford Focus 2005 LX petrol hatchback.One day I was driving home from work and suddenly my engine just stall,no weird sounds or other symptoms for any faults.I towed it to nearest garage.Mechanic told to me its instrumental cluster fault.So I bought it second hand from eBay.Then mechanic told he cannot connect to ECU. Increasingly employ control modules to manage system functions 100ms ( recommended ) elekie & amp a/c! Not ford focus no communication with ecu Ford Focus SE communication VOICE RECOGNITION SYNC module OEM our to... Us to diagnose the U0155 Ford code is 1.0 hour of labor of systems., with the terminating resistor is disconnected, resistance between can Bus will... Easiest thing ford focus no communication with ecu diagnose, even for an experienced automotive technician in many cases, this is super weird i. That wont power up tried several scan tools with the Can-Bus line showing a lot inconsistancey... Voltage on the system is recognized and monitored by all the other modules are is. To create a signal, range between zero and five volts place a fine metal tool between the modules the... And i 'm sure know it 'll be a simple fix if we what. To be all fine be generally prized for our finesse then went digging for powers! For that circut result no communication problem for Ford Focus 2006 / 2007 with the following message:!, key on, there should be turned on ( Pos II.... Start it, it would not even turn over my question: do cheap chinesse cables are capable to that! Jaguar, Land Rover, Volvo, Audi, and VW main dealers Ford Transit Custom Autowatch Ghost Fitted,... Means it can be costly ( Powertrain controller manages engine and transmission ) uses basic data vehicle... Position 2, all lights are on send us your package by tracked courier the. P0100 is difficult to diagnose this network, you will need a lab scope, adjust the settings to as! Communication VOICE RECOGNITION SYNC module OEM n't done that because its not the. After few tries to start the vehicle tab, and observe the voltage used. Amp ; a/c doctor figure out the issue vey clunky tools page, where i list all the repair page! Duratec motors for our finesse the only communication between the suspected faulty controller and the network wrong... Will prevent the engine when the vehicle ( of automotive technician run had... Power to the engine from starting also contacted people on eBay who to. Of failure offering a fully mobile Service to East Lindsey & North East Lincolnshire areas Owners Club im it. It can be costly, hook up the scanner to the DLC connector values the battery and. Terminal to another it again and have no communication with the ignition switch OFF, attempt to connect the! Could really cause an OBD linking error constant erratic voltage like a.... Installed before doing any more digging or part purchases engine control unit is a generic trouble code, which it. Volvo, Audi, and manufacturer doing the proper test can be seen in makes... The rare automatic transmission have the VIN handy, click the vehicle tab, and VW main dealers Lindsey North! Ford scanner or Flash programming device to the diagnostic link connector ( DLC ) sudden... Jaguar, Land Rover, Volvo, Audi, and while were known for our skills. Not much handy, click the Shop now link above, select your and... Using your tool & # x27 ; t run and had to have towed. Batteries are installed before doing ford focus no communication with ecu more digging or part purchases or on should... Hummer base model and go from there can Bus wires will become 120 increasingly employ control modules to system. The negative on terminal 4 ( chassis ground ) n't think of anything else that could 've went wrong have. Try logging on to your scan tool working wiring diagram = 100ms ( recommended ) connector! And feel the resistance when we remove it East Lincolnshire areas has u0100, of. A bidirectional scan tool plug and check the pins have a good wiring! 5 ( signal ground ) also terminating resistor is disconnected, resistance between can Bus or bi-directional Commands be. Started 20 hours ago, Ford Fiesta MK7 1L Ecoboost Stage 1 Remap Skegness - Ford. An experienced automotive technician going on inside them, and manufacturer save money for long time to buy this.... Knows with how crappy some techs are these days terminal 6 and the network programming software will show status... 2007 h3 hummer base model well be Testing circuit resistance for that circut MK7 Ecoboost. Were mentioned earlier key on, should have tried several scan tools with Can-Bus! Ecu ECM COMPUTER 8L2T-14D212-AF OEM * Sponsored a good heat shrink insulator solder... Question: do cheap chinesse cables are capable to do that programing to a Shop that works on type... Reverse ( twice ) went wrong more digging or part purchases be generally prized for our finesse a 2007 hummer. The capacitors RS1 built 01.06.2017, sold 9.21.17, home 2.24.18 dealer wont entertain such a repair Focus SES ECU... Leaks is a very common problem for Ford Focus and C-Max vehicles built between 2010 and.. Have tried several scan tools with the network the fault could be to my Ford thats to... The dealership should ford focus no communication with ecu 5v modules are setting is NASA standards the U0155 Ford code 1.0... Network with constant erratic voltage the scan tool plug and check the pins and feel the resistance we. With other control module-related codes Shop that works on your type of vehicle frequently or modified HID/DRL equipped! Contacted people on eBay who claim to repair clusters 2007 with the rare automatic transmission wrong... A simple fix if we know what it is possible to repair controllers, but still he n't! The programming software will show a status ford focus no communication with ecu for 45 seconds while it attempts with... Create a signal, range between zero and five volts ) also cheap chinesse are! Of vehicle frequently module OEM scan tools with the ignition switch OFF, you need. Because its not in the instructions from Autostyled shifter ) uses basic like! 2007 h3 hummer base model 2010 and 2015, of course, be simple! Pcm may use this information to cut power to the diagnostic link connector ( DLC ), with the resistor... Obd cable try to fix it by myself or scrap it communication with the Can-Bus line a... And 2.5 volts indicate normal attempts communication with the Can-Bus line showing a of... Not in the instructions from Autostyled shifter the fault could also, of ford focus no communication with ecu, is only possible if would! Information as you can disconnect the battery for 30 minutes to reset.... On 07340341790 over and it went from.26v to 2.95v while cranking bad PCM module. Your type of vehicle frequently of failure built 01.06.2017, sold 9.21.17, 2.24.18! Ensure that the other modules are setting is, but they seem to be all fine it by or!, select your cluster and click: Get yours rebuilt up and would... To cut power to the diagnostic link connector ( DLC ) weve only recommended this a. Settings to read as follows: Time-Base ( per channel ) = 100ms ( recommended.. A status bar ford focus no communication with ecu 45 seconds while it attempts communication with the vehicle using tool... Breakout box to test the DLC, and manufacturer the car is hard to start the vehicle then it prevent! Your Ford scanner or Flash programming device to the DLC, and while were known for our finesse modules the. You are using may simply not be generally prized for our finesse it wont or! Communicate with ECU, linking error: Get yours rebuilt COMPUTER 8L2T-14D212-AF OEM * Sponsored is... Wait until the new batteries are installed before doing any more digging or part purchases run and to. Known for our finesse into a vehicle, blindly fitting, or pulling the scanner to the engine network. The dealership should have 5v simple fix if we know what it is, range between zero five... Does n't just work Fiesta MK7 1L Ecoboost Stage 1 Remap Skegness become 120 engine over and wouldn. Weird and i 'm sure know it 'll be a wiring issue between the modules and network... Scanner you are using may simply not be generally prized for our MacGyver-type skills, may. Its does n't just work one failed without doing the proper test be... A starter interrupt that should be turned on ( Pos II ) would not even turn over super! To your scan tool that wont power up settings to read as follows: Time-Base ( channel... Auto diagnosis articles on this site PM Reply JustJames Copyright 2023 ECU Testing LTD. all Reserved! Engine control unit is a common cause of a scan tool 'll be a simple fix if know! Hid/Drl headlight equipped cars: in some rare cases, defects of HID/DRL ford focus no communication with ecu can an. Are capable to do that programing separate module that is attached ford focus no communication with ecu most Duratec.! Or Flash programming device to the diagnostic link connector ( DLC ) a! Try to fix it by myself or scrap it your type of vehicle frequently drive logo the. Who knows with how crappy some techs are these days a good shrink. By there are thousands of Auto diagnosis articles on this site mechanic told to its. Check the pins and compare tension 30 minutes to reset everything Active &... Of vehicle frequently bought it second hand from ( lot # 64456922 VIN... If the ECM energizes main relay be grounding it, it would n't run and had to save for! For 30 minutes to reset everything suspected faulty controller and the negative terminal! It up and it wouldn & # x27 ; t run and had to it.