Place the voltmeter positive probe on terminal 6 and the negative on terminal 4. Your previous content has been restored. Free shipping . Still no update from the dealership. A blown fuse is often the cause of a scan tool that simply wont power up. Module located at-> under Battery Junction Box.Restraints Control Module: if data-bus wiring is damaged or module is defective, this can cause an OBD linking error. 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.. This code means that the Transmission Control Module (TCM) and other control modules on the vehicle are not talking to each other. I have to call the dealer and see what's going on. . See more 2008 Ford Focus Communication Control 8L2T14D2. Had transmission rebuilt (Pro).My problem is that when it gets around 35, 8L90E Specs, Performance, and Identification, TH400 Transmission Specs, ID, and Common Problems, Ford Fiesta U0100: Lost Communication with ECM/PCM A, Ford Mondeo U0100: Lost Communication with ECM/PCM A, Mazda 6 P0320: Meaning, Causes, & Diagnosis, PCM (Powertrain Control Module) or ECM (Engine Control Module). Raydog (Two different names for the same thing). Im passing it on. The newer it is, the more likely it is that more modules are communicating with the PCM. We have very precise tools for this job, but you can still nail this test by improvising a fine paper clip or such. found fuse #36 in the batt dist box blown and pops a new on right away. To help stabilize resistance, the CAN circuit employs two 120-ohm resistors in parallel. Nissaki You can disconnect the HID/DRL connectors or fuses as a test. LW16-11 OEM 2008 2009 FOCUS EXPLORER TAURUS . But opting out of some of these cookies may have an effect on your browsing experience. Not only this but we also engineer-out the faults to ensure that the Ford instrument cluster problems do not return. Moisture caused by water leaks is a common cause of failure. Checking your vehicles socket is a little more work but not much. It could be a result of a software issue, for example. We also use third-party cookies that help us analyze and understand how you use this website. Copyright 2023 ECU Testing LTD. All Rights Reserved. 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. They are the communication terminals your scan tool uses to access the vehicles CAN network. and a flashing automatic drive logo on the dash cluster, selecting gears was also vey clunky. 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. i have 12v to coils etc but no ref voltage to sensors. I just had it for 6 months and now I have to scrap it? 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. Controllers are connected via multiplexers which facilitate communication and the sharing of information. Failure Date: 08/13/2022. Today i have gone to look at a 59 plate ford fiesta first of the newer shape model. Common failing ECU causing a constant 2 cylinder misfire of the engine,speedo and mileage failure or even 'EAC Fail' message on the dash. ABS Control Module: if data-bus wiring is damaged or module is defective, this can cause an OBD linking error. 8L2T-14D212-AF | FORD OEM COMMUNICATION CONTROL MODULE UNIT . Wiring issues are the easiest thing to diagnose at home. Probably shorted when reconnecting a cable putting the PCM in protect mode or whatever it might be called. If the resistance returns to the normal 60-70 Ohms, youve found the problem controller. 2002 ford focus 2.0 dohc no start, no crank, no pcm communication, . 2014 Ford Focus Se 2.0L (Lot# 64456922, VIN: 1FADP3F27EL204541). If the ECU with the terminating resistor is disconnected, resistance between CAN Bus wires will become 120. We take a great deal of pride in our work and will always handle your instrument cluster as if it where our own, we understand how important it is for your instrument cluster to always look as good as new when it is fitted back to your vehicle. Stock ECU Programmed When Ford Motor . The electrical distribution shows fuses/relays providing power to ECU. Now, hook up the lab scope to the DLC as follows; Channel # 2 of your lab scope to Pin # 10, Ground lead to Pin # 4 (or you can use a good chassis ground). Ok Adding New Oil Without Draining? 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. Or the only option is Ford themselfs? You can use this link to go to the NHTSA website VIN lookup tool. Any ideas what fault could be to my ford? 2WD. 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. and a flashing automatic drive logo on the dash cluster, selecting gears was also vey clunky. Each controller has a set time to communicate. FORD FOCUS 2003 1.8 REF 727 / ECU SET KIT 2M5A-12A650-PE FREE P&P. 100. 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. could the ecm be causing it. 221,000 MILES. Catching a glitch in an information packet would require pure luck when using a simple voltmeter. 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. Started December 13, 2022, By You can jump ahead to voltage and resistance tests below in the CAN network fault section. i dont have a wiring diagram for that circut. Marteinn Were using our ability to feel the difference in tension from one terminal to another. 2013 2014 FORD FOCUS SE COMMUNICATION VOICE RECOGNITION SYNC MODULE OEM . The contact stated while stopped in traffic the vehicle lost all power and the warning message " transmission failure" illuminated on the instrument panel. 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.. These cookies do not store any personal information. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. The problem turned out to be a shorted EBP sensor. 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, Check terminal 16 and terminal 5 (signal ground) also. Labor: 1.0. Started Monday at 08:19 PM, By 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. 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. I do have WMI installed, if i want to blame that wiring for this but then its fine for 6 months with that install. Stock or modified HID/DRL headlight equipped cars: in some rare cases, defects of HID/DRL systems can cause an OBD linking error. By far, the two most common causes of control module failure, in my experience, are old age and moisture. Often the instrument cluster will fail completely and will stay that way, leaving you with a Ford Focus not starting. Using a good heat shrink insulator and solder will repair the wiring to NASA standards. 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. It can be an exceptionally difficult code to diagnose. Well place a fine metal tool between the pins and feel the resistance when we remove it. I went back to work on it and the lady who it belongs to, her father had it picked up and taken to Ford. 119.99. Obviously there's more of an issue. I haven't done that because its not in the instructions from Autostyled shifter. No mods or chips. Share | Add to Watchlist. I will get delivery tomorrow,but there is small hope its will work. I susspect the issues is in the Instrument Cluster. No the car is hard to start and misfires like a thunderstrom. From there, youll be able to look up the TSBs for your 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 . Many older vehicles combined the PCM and TCM into one unit. Drive train problem. I went and picked it up and it wouldn't run and had to have it towed. If that isnt the case, check voltage terminal 16 (scan tool voltage) and terminal 4 (chassis ground). This causes a no-start issue. What to do if the OBD II scanner doesn't communicate with the vehicle. The ECU aka PCM is powered by a fuse that also feeds the fuel bowl heater. (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. Computers are great most of the time, but when they dont work, theyre a pain in the jacksie. So I bought new Diagnostic scan tool to make sure that there is linking error. This code tells you that communication has been lost between the ECM/PCM (main computer) and a particular control module has been completely lost. It can be found in the console storage compartment, cup holder, or other location depending on your vehicle. jimmytheford As said, vehicles employ lots of controllers. Started 4 hours ago, By 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. The other day I was driving arroud the city and a warning light came up. Guide with pics. 97 it's a, I have a 2007 h3 hummer base model. Package the Ford Focus dashboard inside a sturdy box with plenty of packaging material (make sure you include your confirmation email in the box). As said at the beginning of this post, Ive assumed you have power in the scan tool, but it isnt communicating. U0100 is a generic trouble code, which means it can be seen in various makes and models. 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. 5.8L. Hey, ImJohn, and I'm a technical writer here at Rustyautos.com. : 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. You can disconnect the HID/DRL connectors or fuses as a test.Edit: Also check health of wiring shown in the pics at this link (rear hatch door)->http://www.focusfanatics.com/forum/s09&postcount=5. rq. If you would like us to diagnose your vehicle electrical problems give us a call on 07340341790. The two wires are identified as CAN high and CAN low, so-called because of the range of volts they use to communicate on the network. Upload or insert images from URL. Speedo is dissplaying dashes where the milage should be and the same warning light is flashing. They fail to work and stop communication completely the other controllers register the controller as faulty. There are at least two CAN bus locations on a vehicle. Heres a pinout of your vehicles DLC you can use to follow along. All warning and dash lights would be on and SCT would power up and go through all modes except datalogging and loading a tune . The readings between 1.5 and 2.5 volts indicate normal. EFI Software Problems: Often times, when EFI software related functions don't work properly, it's caused by a corrupted software download/installation. 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. Required fields are marked *. Bus + circuit # 914.and is found on Pin 2 of the DLC, Bus circuit # 915.and is found on Pin 10 of the DLC. Commonly failing Focus (Mk III) and C-Max (Mk II) engine ECU will prevent the vehicle from starting when it becomes faulty. Restraints Control Module: if data-bus wiring is damaged or module is defective, this can cause an OBD linking error. I bought all that,but still he couldn't communicate with ECU,linking error. When a vehicle has U0100, most of the time, it won't run or drive anywhere. Place the voltmeter positive probe on terminal 14 and the negative on terminal 4. ENGINE ECU FORD FOCUS MK4 C519 2018 On TITANIUM 999 PETROL B7DA - 11936760. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. A visual test comes first. If all controllers talk at once, messages are lost. The Ford FCSD aftermarket remote entry system comes with a starter interrupt that should be disabled on PATS equipped vehicles. Ford Focus 2006 / 2007 with the rare automatic transmission. You also have the option to opt-out of these cookies. 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. I would wait until the new batteries are installed before doing any more digging or part purchases. Next morning the car would not start. 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. Or check out the Amazon auto repair tools link below. Check for corrosion or debris in the plug. Started 2 hours ago, By Login Register. Car worked just fine, no limp mode or anything. To diagnose this network, you will need a high-impedance DVOM and a scanner. 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. If, on the other hand, resistance is lower or higher than expected but not open, then a faulty controller is a likely suspect. The voltage should now be at or near battery voltage. Common fault codes: C1095 - Pump Motor Circuit Failure. Ford Fusion Club Cannot Communicate With Abs Cannot Communicate With Abs By mikejt, May 2, 2014 in Ford Fusion Club Share Reply to this topic Start new topic mikejt Budding Enthusiast 5 Name: mike Ford Model: Focus Ford Year: 2008 UK/Ireland Location: Lancashire Posted May 2, 2014 Hi, first of all, sorry my first post is a cry for help.
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