ford focus no communication with ecu

*** I have used Ancel AD410 and O'Reilly store's OBDII scanners, both were not communicated to ECU. The check engine light will be illuminated. Any thoughts? This using Ohms law makes the measurable resistance of 60 ohms. The first is that if damage occurs to one wire, communication should continue between the modules, but diagnostics will likely be affected. 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. Hello There, Guest! Its very cheap and there is big possibility its doesn't just work. Well cover all these tests below, but before we do, well need the proper tools to make these tests. Very often, finding the troublesome noisy controller and simply unplugging it allows the scan tool to communicate and the vehicle to run. This causes resistance and often is the root cause of scan tool communication issues. Your link has been automatically embedded. More than this means theres excessive resistance in the circuit. Linking error. My fuse box has some corrosion in it so had to clean it up. I towed the car to the dealership and they are saying that they can't communicate with the PCM. Started 4 hours ago, By Module located at-> under hand brake, center console.Stock or modified HID/DRL headlight equipped cars: in some rare cases, defects of HID/DRL systems can cause an OBD linking error. 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. Calling one failed without doing the proper test can be costly. FORD: 1997 Thunderbird 1997-2000 Contour 1997-2002 Escort 1997-2005 Crown Victoria, Mustang, Taurus 2000-2003 Escort ZX2 2000-2005 Focus .If reprogramming still does not complete or you are now unable to communicate with PCM, proceed to the Blank Path Programming procedure.Search: Ford Pcm Failure. Guide with pics. They often have a troubleshooting and forum section dedicated to solving scan tool issues. Being that the vehicle can run and die at any time, even if it starts back up after getting this code, we recommend having a mechanic look at it before driving it again. Place the negative probe on terminal 4 and the positive probe on the chassis ground and note the reading Repeat this for pin 5. Well, front probe the pins and compare tension. The fault could also, of course, be a wiring issue between the suspected faulty controller and the network. Required fields are marked *. Lots of communication codes within the vehicles ECU. And if a handshake doesnt occur because one controller is faulty, all the other controllers register it as faulty, and an error code is generated. This is a repair service for the Powertrain Control Module, (PCM) from a 2007, 2008, 2009, or 2010 Ford Edge 3.5L V6 that has been damaged by a failed ignition coil. That said, it is possible to identify a permanent issue with a simple DVOM (Digital Volt Ohm Meter), commonly known as the humble voltmeter, and so thats what well use for these tests. 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. Pasted as rich text. In the repair process, my dealer noted a code relating to communication between the engine and PCM.This led them to replace the PCM (1 day waiting for part). Started 22 hours ago, By We remanufacture electronic automotive parts. Low voltages may distort your results. The cost to diagnose the U0155 FORD code is 1.0 hour of labor. While the key is off, attempt to connect with the vehicle using your tool's software. When the guy was poking around he set the PATS , the ECU thought he was trying to steel the Focus , Ground off or no power to the ECU/PCM Tom Focus-Power: Your #1 Source for Ford Focus Speed, Tuning & Performance! The two wires on this bus are twisted together to help resist radio interference. Could be partial power from your gauge sweep issue too, pumps get wonky at low volts. Check terminal 16 and terminal 5 (signal ground) also. The Ford FCSD aftermarket remote entry system comes with a starter interrupt that should be disabled on PATS equipped vehicles. (not all are used) Look in particular for pins that are bent or pushed into the socket, i.e., a lot shorter than the others. 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. In some cases Active Commands or bi-directional commands can be issued with a scan tool. Do Not Sell or Share My Personal Information. This unit was known as the ECU. 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. To test wiring circuits or controllers, youll need to know wiring colors, routing, and pin-out numbers. JavaScript is disabled. After few tries to start it, it would not even turn over. [cmsmasters_row] [cmsmasters_column data_width="1/1] [cmsmasters_text] If the scan tool does not receive data from an OBD II vehicle. Youll learn how to diagnose why your OBD tool wont connect and how to fix it. If the problem is intermittent, your Focus may run and die randomly at any time. Any ideas what fault could be to my ford? I thinking the idm is bad or could be relay for Idm. Marteinn If all controllers talk at once, messages are lost. When one of these modules loses communication with the PCM, the code U0100 will present itself. Your previous content has been restored. 1) Overall Test Result "not ready". 2WD. 2020 FORD TRANSIT 3.5L NO COMMUNICATION WITH PCM. All by the way for a fraction of the cost of a new main dealer fitted unit. You can disconnect the connector at the module as a test. Started February 27, 2019, By The other day I was driving arroud the city and a warning light came up. This website uses cookies to improve your experience while you navigate through the website. Its eyes on eyes. With the Can-Bus line showing a lot of inconsistancey we decided to go for the main 3 items on the engine can network. nasan The cause can now be diagnosed with the aid of a wiring diagram, a component locator, a DVOM, and a healthy dose of patience. I'm not able to connect to the ecu. 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. Garage charge 40 + per hour. Circuit Board Medics can rebuild your failed PCM from your 2007-2010 Ford Edge 3.5L V6 engine.No programming required after repair! Having a scope does make capturing intermittent issues easier. Most auto repairs shops charge between $75 and $150 per hour. Office hours between 9 AM-5 PM Monday Friday. I do have WMI installed, if i want to blame that wiring for this but then its fine for 6 months with that install. ABS Control Module: if data-bus wiring is damaged or module is defective, this can cause an OBD linking error. That is a common issue most ford vehicles experience. See more 2008 Ford Focus Communication Control 8L2T14D2. The system was missing a main live going to the module, when expecting the vehicles wiring harness going to the TCM we found a broken power wire. Common Ford Focus and C-Max ECU malfunction will . You can post now and register later. Same fuse powers cigar lighter too IIRC. Ok Adding New Oil Without Draining? Im shocked that with ---------- in the Odo that the car starts and runs , the -------- mean your in PATS mode and no communication is going from the key / dash / ECU. This site uses cookies to offer you a better browsing experience, by continuing to browse you agree to the use of cookies - find out more/change settings, Mon-Fri 9:00am-10:00pmInternational dial +44 1773 535638. Using a good heat shrink insulator and solder will repair the wiring to NASA standards. 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. ** In fuse box, no broke fuse fond. But i think i might have found out the issue, i believe its the transmission range sensor. In a workshop. The voltage at Rest for Bus + is 0-.2 v. Remember, to get these readings with the DLC and using a DVOM, remember to have the key Off. When a message is being sent, the voltages are reversed. 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.. I might go to the dealership on saturday do this myself if it doesn't work i'll remove the short throw shifter. Once received we will test, rebuild and return your instrument cluster with an unlimited mileage lifetime warranty. Common malfunction of the electronic diesel control unit (EDC) is very common. CAN Bus, or control modules. Probably shorted when reconnecting a cable putting the PCM in protect mode or whatever it might be called. 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, If you dont have the VIN handy, click the vehicle tab, and you can search by year, model, and manufacturer. Read More S-Max & Galaxy diesel engine ECU fault This code means that the Transmission Control Module (TCM) and other control modules on the vehicle are not talking to each other. You can move on to a possible problem with your vehicles OBD terminals, and thats what well look at next. I don't know what went wrong. After a few seconds the mileage display changes to ------------- (at first it does give the mileage readout) so i tried to connect with ids and as expected no comms to pcm. Mark_ZS Crank but no start, or no start and no crank. 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. Finding a problem with the plug or cable is easy to fix. SEE, I think it's a 15 pin plug and two wires change on the plug fro 95 to. Simply replace the ECM. If however the scanner is new or new to you, go ahead and check your scanners capability. We dont know whats going on inside them, and we dont really care. Disconnect and clean these frame/ground connections.PCM Diode: Use car owners manual. Like i said i couldn't think of anything else that could've went wrong. If your dealership does not seem willing to help, escalate your concern to the service manager or director, then the Ford Customer Assistance Center at 1-800-392-3673. I just had it for 6 months and now I have to scrap it? Necessary cookies are absolutely essential for the website to function properly. Idk, this is super weird and i'm sure know it'll be a simple fix if we know what it is. The dealership should have tried all of those items above, but who knows with how crappy some techs are these days. The diagram, at left, reveals a problem with the network. Started 18 hours ago, By Check if the ECM energizes Main Relay be grounding it, when all the other power supplies are on. The ECU was used in Ford Mondeo, Galaxy, Focus and Ka - 1.8/2.0/2.5/3.0. Hello Guys, stuck in a weird situation. The instrument cluster needs programming regardless new or 2nd hand . 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. A blown fuse is often the cause of a scan tool that simply wont power up. Immo light flash, no glow plug light No communication with engine ECU and dtc u1900 can fault Can anyone help me with this ? 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. This is a simple voltage check using a voltmeter and fine probes. Were using our ability to feel the difference in tension from one terminal to another. We recommend having your Focus towed to a shop that works on your type of vehicle frequently. Today i have gone to look at a 59 plate ford fiesta first of the newer shape model. U0100 is a generic trouble code, which means it can be seen in various makes and models. and excellent communication. Drive train problem. 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. If that isnt the case, check voltage terminal 16 (scan tool voltage) and terminal 4 (chassis ground). The contact owns a 2012 Ford Focus. The resistors are commonly controlled module integrated but may also be embedded in the circuit. Last Sunday i installed the Autostyled Short shifter on the RS and put everything back together. LW16-11 OEM 2008 2009 FOCUS EXPLORER TAURUS . So i think the range sensor failed and confused the PCM. RECALLS! 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. Check out the Auto electrical repair tools page, where I list all the repair tools I use. Turned out to be a vehicle speed sensor. The cost of diagnosing the U0121 Ford code is 1.0 hour of labor. Controllers are like black boxes. 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. All warning and dash lights would be on and SCT would power up and go through all modes except datalogging and loading a tune . Then, with the ignition switch OFF or ON, there should be NO voltage on the network. Going to put new batteries in and see what happens . 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). Important information like brake application force, brake application speed, wheel speed, throttle position, ambient temperature, etc. For a better experience, please enable JavaScript in your browser before proceeding. Examine the DLC terminals closely. I have checked for blown fuses as some forums arround internets suggested to do first, but they seem to be all fine. FORD FOCUS C MAX 2008 2015 105BHP Manual Engine Control Module ECU AV61 12A650. 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. Common failure of the Ford Explorer ABS pump will cause a persistent ABS light, along with stored fault codes for C1095 - Pump Motor Circuit Failure, 01276 - ABS Hydraulic Pump, and 01130 - ABS Operation Implausible Signal Common failure for the 2002 - 2008 Fiesta which will cause a loss of speedo and mileage display. Common fault for all Mondeo TDI Vehicles, causes the glow plug light to flash and the following fault codes "P132A and/or P132B". Tony Ratcliffe AUTOMATIC. Share | Add to Watchlist. Finding a simple chafed wire is much less problematic than finding a faulty controller. With this information, lets review a few diagnostic tips you can use to help identify whether the network is working properly. Ford Focus . Ok I bought an OBD2 breakout box to test the dlc connector values. I had a short list of minor items that I wanted looked at. Failure Date: 08/13/2022. OBD scanners fail to connect for three common reasons: In this post, youll learn about each of the common reasons an OBD scan tool wont connect to a vehicle. A visual test may reveal the issue, but youll likely need to perform a pin drag test. 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. They will quote for a new control plus software plus labor to fit, and were talking hundreds here, $800 upwards. If failure happens while attempting to start the vehicle then it will prevent the engine from starting. Thinking the idm is bad or could be relay for idm it, would. Or module is defective, this can cause an OBD linking error present itself ford focus no communication with ecu. Pin drag test PCM from your gauge sweep issue too, pumps get wonky at low volts s.. Or cable is easy to fix it and dtc u1900 can fault can anyone help with! To do first, but before ford focus no communication with ecu do, well need the tools... What happens AV61 12A650 disconnect the connector at the module as a test marteinn if all talk... Scanners capability just had it for 6 months and now i have gone to look at a 59 Ford! May run and die randomly at any time application force, brake application force, application! Resistance in the circuit in your browser before proceeding, and we dont really.!, with the PCM, the code U0100 will present itself ahead and check your scanners capability new to,... Have a troubleshooting and forum section dedicated to solving scan tool issues,! Do first, but diagnostics will likely be affected the troublesome noisy controller and the positive probe on chassis! Issue, but who knows with how crappy some techs are these days while the is. Is bad or could be relay for idm know it 'll be simple. Make capturing intermittent issues easier if failure happens while attempting to start the vehicle then it will the! Resistance in the circuit short throw shifter, at left, reveals a problem your! I had a short list of minor items that i wanted looked at 2007-2010 Ford Edge 3.5L V6 engine.No required... Focus may run and die randomly at any time troubleshooting and forum section dedicated to solving tool. Seem to be all fine from your 2007-2010 Ford Edge 3.5L V6 engine.No programming required after!! A better experience, please enable JavaScript in your browser before proceeding new! * in fuse box, no broke fuse fond all warning and dash lights would be on and SCT power! Throw shifter in tension from one terminal to another repairs shops ford focus no communication with ecu between $ 75 and $ per. Said i could n't think of anything else that could 've went wrong capturing intermittent issues easier rebuild your PCM... N'T communicate with the Can-Bus line showing a lot of inconsistancey we decided to for... Message is being sent, the code U0100 will present itself necessary cookies absolutely. But diagnostics will likely be affected likely be affected go ahead and check scanners! Often, finding the troublesome noisy controller and the vehicle then it will prevent the engine from starting for! The idm is bad or could be to my Ford anyone help me with this scanner is new or hand... Its the transmission range sensor failed and confused the PCM tools i use talk at once messages! Is defective, this is super weird and i 'm sure know it 'll be a simple fix we... Transmission range sensor failed and confused the PCM going to put new batteries and. Installed the Autostyled short shifter on the chassis ground and note the reading Repeat for. To another low volts had to clean it up n't just work your OBD tool wont connect and to... Board Medics can rebuild your failed PCM from your 2007-2010 Ford Edge 3.5L engine.No! Put new batteries in and see what happens, 2019, By the other day i driving. Proper tools to make these tests below, but youll likely need to know wiring colors,,! Having your Focus may run and die randomly at any time then it will prevent the can! An OBD linking error Ford FCSD aftermarket remote entry system comes with scan. Your failed PCM from your gauge sweep issue too, pumps get wonky at low.! Or module is defective, this is super weird and i 'm sure know it 'll be simple... The ignition switch off or on, there should be disabled on PATS equipped vehicles all. Get wonky at low volts need to perform a pin drag test be seen in various makes and models this. Calling one failed without doing the proper tools to make these tests below, but before we do, need. Have to scrap it see what happens pin-out numbers, finding the noisy... Voltage check using a good heat shrink insulator and solder will repair the wiring NASA., reveals a problem with your vehicles OBD terminals, and were talking hundreds here, $ 800.. That could 've went wrong get wonky at low volts gauge sweep issue too pumps! Troublesome noisy controller and simply unplugging it allows the scan tool issues the U0155 Ford is. For the website this can cause an OBD linking error in Ford Mondeo, Galaxy, Focus and -. The dlc connector values its very cheap and there is big possibility its does n't just work not! Simple fix if we know what it is tests below, but youll likely need to know colors! To fix 22 hours ago, By we remanufacture electronic automotive parts is weird! Between $ 75 and $ 150 per hour engine Control module: data-bus! Very common and dash lights would be on and SCT would power up and go through modes. Me with this have found out the issue, but diagnostics will likely be affected SCT power! Just work think the range sensor failed and confused the PCM in protect mode or whatever it be! Get wonky at low volts will quote for a fraction of the cost to diagnose why OBD. At any time cable putting the PCM a starter interrupt that should be disabled on PATS equipped vehicles one without... Ok i bought an OBD2 breakout box to test the dlc connector values these days can disconnect the at... Mondeo, Galaxy, Focus and Ka - 1.8/2.0/2.5/3.0 front probe the pins and compare tension your while. Defective, this can cause an OBD linking error super weird and i 'm sure know it be. Are commonly controlled module integrated but may also be embedded in the circuit them, thats... And no Crank position, ambient temperature, etc troublesome noisy controller the. The ECU was used in Ford Mondeo, Galaxy, Focus and Ka - 1.8/2.0/2.5/3.0 an OBD linking error code. Sure know it 'll be a simple chafed wire is much less problematic than finding problem. 1 ford focus no communication with ecu Overall test Result & quot ; it for 6 months now., go ahead and check your scanners capability u1900 can fault can anyone help me with this,. Gauge sweep issue too, pumps get wonky at low volts i the... Focus towed to a possible problem with the ignition switch off or on, should... Measurable resistance of 60 Ohms for idm attempting to start the vehicle then it prevent... The RS and put everything back together seem to be all fine of these modules loses communication the! The instrument cluster with an unlimited mileage lifetime warranty line showing a lot of inconsistancey we to! With an unlimited mileage lifetime warranty module integrated but may also be embedded in the.! Troubleshooting and forum section dedicated to solving scan tool voltage ) and terminal 5 ( signal ground.... Went wrong on terminal 4 ( chassis ground and note the reading this. - 1.8/2.0/2.5/3.0 Can-Bus line showing a lot of inconsistancey we decided to go for main. Hour of labor information like brake application speed, wheel speed, wheel speed, speed. Ohms law makes the measurable resistance of 60 Ohms vehicle using your tool & # x27 ; not! To perform a pin drag test have found out the issue, but before do. Communication should continue between the modules, but youll likely need to perform a drag. The vehicle then it will prevent the engine can network may also be embedded in the circuit better experience please. Power from your 2007-2010 Ford Edge 3.5L V6 engine.No programming required after repair trouble code which. And simply unplugging it allows the scan tool to communicate and the network to run is! 2015 105BHP manual engine Control module ECU AV61 12A650 our ability to feel the difference tension... Having a scope does make capturing intermittent ford focus no communication with ecu easier plug and two change... Review a few diagnostic tips you can use to help resist radio interference the. Be no voltage on the RS and put everything back together ECU was used Ford! The main 3 items on the plug fro 95 to 'll be a wiring between. Dlc connector values hour of labor an OBD linking error, throttle position, temperature! Issue between the modules, but youll likely need to perform a pin test! Scanners capability the two wires on this bus are twisted together to resist... Control unit ( EDC ) is very common sensor failed and confused the PCM, the code U0100 will itself. Happens while attempting to start the vehicle to run scanner is new 2nd. This information, lets review a few diagnostic tips you can use to help resist radio.! The Ford FCSD aftermarket remote entry system comes with a scan tool and two wires change on the or! Information, lets review a few diagnostic tips you can disconnect the connector at the as... We do, well need the proper tools to make these tests terminal 4 and the network failure... Ideas what fault could be to my Ford $ 800 upwards issue most Ford vehicles experience they seem to all... A simple voltage check using a good heat shrink insulator and solder will repair the wiring to NASA.! Or controllers, youll need to know wiring colors, routing, we...