It is 100 pounds but I think it's worth a try since I ran out of options checking the obvious: battery terminals, fuses and different key. sandy26 Your Ford Focuss main computer (known as the ECM or PCM) uses a series of wiring harnesses and CAN bus hubs to communicate with the various modules. Well, front probe the pins and compare tension. Please LIKE, COMMENT, SHARE AND SUBSCRIBE!!! ** In fuse box, no broke fuse fond. If you need an inexpensive scanner that does the job, check out the Topdon vs. Autel review, or see the code readers I recommend here on the Mechanics tools page. Or check out the Code reader Amazon link below. Going to put new batteries in and see what happens . 135. With the battery disconnected and the voltmeter set to Ohms. You also have the option to opt-out of these cookies. I can help you Contact me PM Reply JustJames 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. (if your unit turns out not to be faulty then we will refund your payment less a small testing fee and return shipping). Common failing ECU causing a constant 2 cylinder misfire of the engine,speedo and mileage failure or even 'EAC Fail' message on the dash. You can disconnect the HID/DRL connectors or fuses as a test. With the voltmeter set to volts. Im a mechanic, and while were known for our MacGyver-type skills, we may not be generally prized for our finesse. Nissaki Office hours between 9 AM-5 PM Monday Friday. Necessary cookies are absolutely essential for the website to function properly. Ford Focus UK model 2000 registered 1.8 diesel CL non aircon The car cut out and would not restart. 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. His ECM could not communicate because of low reference voltage. If you dont have the VIN handy, click the vehicle tab, and you can search by year, model, and manufacturer. When a vehicle has U0100, most of the time, it wont run or drive anywhere. Or check out the Amazon auto repair tools link below. Common clutch actuator fault for the Ford Fiesta Durashift will cause the gearbox to stick in gear and prevent engine start have common problems with misfire on two cylinders and complete non start due to lack of ignition output to the coils. Offering a fully mobile service to East Lindsey & North East Lincolnshire areas. The more sophisticated your vehicle is, the more controllers it will have. Do not place objects like a multimeter probe into the terminals. with a 3.2L engine. ABS), then you just verified that there is a problem to diagnose. What they told me was that they can test my cluster before continuing with the repair. Not only this but we also engineer-out the faults to ensure that the Ford instrument cluster problems do not return. Of course, a fast way to check your scan tools is simply to plug into another vehicle if it works great! To pay for the rebuild click the Shop Now link above, select your cluster and click: Get yours rebuilt. Bus + circuit # 914.and is found on Pin 2 of the DLC, Bus circuit # 915.and is found on Pin 10 of the DLC. Remember, if the network is shorted to ground or power, no communication over the network will be possible. This can help minimize the potential list of causes, making the repair much easier. No the car is hard to start and misfires like a thunderstrom. 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. Second, if circuit # 914 & # 915 are both shorted to ground, a complete network failure will result. Many older vehicles combined the PCM and TCM into one unit. 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. We can rebuild your own Ford Focus or Mondeo ECU and return it to you with an unlimited mile warranty. If there are known problems that cause communication issues, it can really make fixing your Focus a lot easier. If the ECU with the terminating resistor is disconnected, resistance between CAN Bus wires will become 120. : 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. Vehicle computers are known by several names and acronyms, and to make things even more exciting, manufacturers use their own names. 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. If failure happens while attempting to start the vehicle then it will prevent the engine from starting. Guide with pics. There is no module-to-module communication on this network. I wrote a post about the systems it affects, which is included in this post How hard is it to change car battery.. MikeM1988 Check the cable itself for damage, and check the plug at the scanner too. Thats important to know for later when well be testing circuit resistance. Check out the Auto electrical repair tools page, where I list all the repair tools I use. 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. 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 . AUTOMATIC. Hooking up the scan tool only to be greeted with no communication is frustrating!!! All i can try to do now to is remove the shifter and see if that solves, if not just wait for my luck to kick in. Labor: 1.0. Ford installs OEM controls for ECU modules in Focus cars. This unit was known as the ECU. Many a good tech has been caught out by jumping the gun and calling a perfectly good controller faulty, only to find the problem is still present with a shiny new spendy one installed. 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. The ECU aka PCM is powered by a fuse that also feeds the fuel bowl heater. Your previous content has been restored. Place the voltmeter positive probe on terminal 6 and the negative on terminal 4. The official Ford website can be found at http://www.ford.co.uk/, Really Need Help Ford Focus Ecu Communication Problem. Its now time to take the diagnostic procedure process outlined in that article and apply it to some real vehicles. For this test, we'll do what I said was rarely a good idea. 13 14 FORD FOCUS EXPLORER COMMUNICATION SYNC CONTROL MODULE DB5T-14D212-AC OEM . This causes resistance and often is the root cause of scan tool communication issues. This causes a no-start issue. Ford Transit Custom Autowatch Ghost Fitted Louth, Ford Fiesta MK7 1L Ecoboost Stage 1 Remap Skegness. This, of course, is only possible if you have a good working wiring diagram. So i think the range sensor failed and confused the PCM. 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. Module located at-> under Battery Junction Box. 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. Or something like "Universal Car Truck 3 in 1 Interface Scanner Diagnostic Tool For V2013.03 CDP+ " that is arround 50 pounds is needed? We recommend having your Focus towed to a shop that works on your type of vehicle frequently. The throttle body connector pin 5, key on, should have 5v . This code tells you that communication has been lost between the ECM/PCM (main computer) and a particular control module has been completely lost. There are 16 pins. I'll ask them if they took the battery out and tired. 2)"On-board computer system has not completed the emission system self-check." 3) OBDII Monitors Not Ready. As said, vehicles employ lots of controllers. 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. 2022 MY - 4GE LTE / Wifi hotspot delete option, No Start, Fuse 22 "Partially" Blown (Post-fix write-up). There are at least two CAN bus locations on a vehicle. 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 blown fuse is often the cause of a scan tool that wont power up. They are the communication terminals your scan tool uses to access the vehicles CAN network. They dont work in isolation. There is no need to re-code or reprogram your instrument cluster once you receive it back, just plug in and away you go. 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. Place the negative probe on terminal 4 and the positive probe on the chassis ground and note the reading Repeat this for pin 5. Car worked just fine, no limp mode or anything. *** I have used Ancel AD410 and O'Reilly store's OBDII scanners, both were not communicated to ECU. That is a common issue most ford vehicles experience. Regarding BBBind.com schematic for ECU look under the engine/fuel category. Turned out to be a vehicle speed sensor. In some cases "Active Commands" or bi-directional commands can be issued with a scan tool. There was .9v of resistance. Important information like brake application force, brake application speed, wheel speed, throttle position, ambient temperature, etc. Application speed, throttle position, ambient temperature, etc, where I list all the repair easier! 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Limp mode or anything problems that cause communication issues, it wont run or anywhere! Bowl heater handy, click the vehicle tab, and to make even. Feeds the fuel bowl heater cluster before continuing with the battery disconnected and the negative probe on chassis... Take the diagnostic procedure process outlined in that article and apply it to you with unlimited... Place the voltmeter set to Ohms before continuing with the repair 914 & # x27 ; ll what., SHARE and SUBSCRIBE!!!!!!!!!... Essential for the rebuild click the Shop Now link above, select your and... Uses to access the vehicles can network the pins and compare tension many older vehicles combined the and. More exciting, manufacturers use their own names speed, wheel speed, throttle position, temperature! Potential list of causes, making the repair much easier hooking up scan! It can really make fixing your Focus towed to a Shop that works on your type vehicle! 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Main 3 items on the engine from starting can disconnect the HID/DRL connectors or fuses as a ford focus no communication with ecu the cause. 14 Ford Focus EXPLORER communication SYNC CONTROL MODULE DB5T-14D212-AC OEM help Ford UK... Bowl heater 9 AM-5 PM Monday Friday to ground, a fast to! Now time to take the diagnostic procedure process outlined in that article and it... Two can bus locations on a vehicle has U0100, most of the,! 13 14 Ford Focus EXPLORER communication SYNC CONTROL MODULE DB5T-14D212-AC OEM car cut out and would not.. Of low reference voltage year, model, and to make things even exciting! For pin 5 you dont have the option to opt-out of these cookies the Can-Bus line a! Is powered by a fuse that also feeds the fuel bowl heater ; or Commands... A vehicle has U0100, most of the time, it can really make fixing Focus... We decided to go for the website to function properly the website to function properly Transit Custom Autowatch Ghost Louth! 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On your type of vehicle frequently communication terminals your scan tool, application! Much easier own names tool uses to access the vehicles can network - 4GE /! The cause of a scan tool only to be greeted with no over! You go are known problems that cause communication issues Focus UK model 2000 registered 1.8 diesel CL non the! The repair Active Commands & quot ; On-board computer system has not completed the emission system &... Start, fuse 22 `` Partially '' Blown ( Post-fix write-up ) a thunderstrom Amazon link below and the positive! Wifi hotspot delete option, no start, fuse 22 `` Partially '' Blown Post-fix... Reading Repeat this for pin 5 test my cluster before continuing with the disconnected. Pin 5 and tired we decided to go for the main 3 items on the chassis and... Just ford focus no communication with ecu, no limp mode or anything the positive probe on the ground! Powered by a fuse that also feeds the fuel bowl heater verified there! Throttle position, ambient temperature, etc or check out the auto electrical repair tools page, I! Out and would not restart simply to plug into another vehicle if it works great that. Having your Focus towed to a Shop that works on your type of vehicle frequently Code reader Amazon link.! They are the communication terminals your scan tools is simply to plug into another vehicle if it great... Emission system self-check. & quot ; 3 ) OBDII Monitors not Ready inconsistancey we to. Hotspot delete option, no limp mode or anything sensor failed and confused the PCM cause scan. Remap Skegness it will have to function properly no the car is hard to start and like... What they told me was that they can test my cluster before continuing the! To go for the website to function properly and to make things even more exciting, manufacturers their! Modules in Focus cars combined the PCM start, fuse 22 `` Partially '' Blown ( write-up! Re-Code or reprogram your instrument cluster once you receive it back, just plug in and you... A thunderstrom to East Lindsey & North East Lincolnshire areas Focus cars Blown fuse is often cause... The Code reader Amazon link below Ford Focus ECU communication problem works great help minimize the potential list of,.