I'll ask them if they took the battery out and tired. RECALLS! 2013 2014 FORD FOCUS SE COMMUNICATION VOICE RECOGNITION SYNC MODULE OEM . The PCM (Powertrain controller manages engine and transmission) uses basic data like vehicle speed to perform timely fueling or gear change decisions. 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. Set the voltmeter to resistance and probe the DLC terminals at terminal 6 (CAN high) and terminal 14 (CAN low); it should read 60-70 ohms. I haven't done that because its not in the instructions from Autostyled shifter. . The official Ford website can be found at http://www.ford.co.uk/, Really Need Help Ford Focus Ecu Communication Problem. They often have a troubleshooting and forum section dedicated to solving scan tool issues. The throttle body connector pin 5, key on, should have 5v . 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. Typically, its going to be caused by a bad PCM or module. 97 it's a, I have a 2007 h3 hummer base model. Then, with the ignition switch OFF or ON, there should be NO voltage on the network. 2003 Ford Focus ZX3 2.3l N/A = 221 HP, 162 ft-lbs, [email protected] - SOLD 2006 Ford Fusion 2.3l Turbo = 244HP, 247ft-lbs 2016 Ford Fusion Hybrid. found fuse #36 in the batt dist box blown and pops a new on right away. Module located at-> under hand brake, center console. Examine the DLC terminals closely. First, hook up the DVOM (positive lead) to Pin #7 into the back of the DLC connector, the ground lead attached to the chassis. CAN networks, as you know, connect all the controllers together using a twisted pair of wires known as the CAN lines. 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. 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. We are compensated for referring traffic and business to Amazon and other companies linked to on this site. This unit was known as the ECU. FocusRS.org is the largest forum community to discuss the 2016+ Focus RS. By We'll assume you're ok with this, but you can opt-out if you wish. When one of these modules loses communication with the PCM, the code U0100 will present itself. 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. It is possible to repair controllers, but its a specialist job, and a dealer wont entertain such a repair. I am new driver and its so disappointing. 2WD. Catching a glitch in an information packet would require pure luck when using a simple voltmeter. The most common causes of U0100 are a bad PCM/ECM or TCM. But still no communication with the ECU. Stock or modified HID/DRL headlight equipped cars: in some rare cases, defects of HID/DRL systems can cause an OBD linking error. Still no update from the dealership. This power steering motor is a very common problem for Ford Focus and C-Max vehicles built between 2010 and 2015. This website uses cookies to improve your experience. The problem is I already spend 400pounds just to try fix it. 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. Going to put new batteries in and see what happens . That will damage them. Most auto repairs shops charge between $75 and $150 per hour. Pasted as rich text. No Start | Shorted Vehicle Speed Sensor | 2002 Acura. Another handy thing to remember is that newer Ford vehicles are often equipped with more than one network, the second being the ISO 9141 protocol. Started 18 hours ago, By Place the voltmeter positive probe on terminal 6 and the negative on terminal 4. Simply start by removing a controller thats easy to access and repeat the network resistance test again. 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. 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. Place the negative probe on terminal 4 and the positive probe on the chassis ground and note the reading Repeat this for pin 5. Controllers are expensive and complex units. CAN networks communicate in a predictable square wave pattern? SEE, I think it's a 15 pin plug and two wires change on the plug fro 95 to. With the Can-Bus line showing a lot of inconsistancey we decided to go for the main 3 items on the engine can network. 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 can rebuild your own Ford Focus or Mondeo ECU and return it to you with an unlimited mile warranty. Moisture caused by water leaks is a common cause of failure. Today i have gone to look at a 59 plate ford fiesta first of the newer shape model. In many cases, this may require a bidirectional scan tool. Copyright 2023 ECU Testing LTD. All Rights Reserved, Comments on "Ford Focus Dashboard Instrument Cluster - common fault", Power Steering (EPS - Electric Power Steering), ECU (Transmission Combined Clutch Actuator), ECU (Comfort / Convenience Control Module), ECU (ELSD - Electronic Limited Slip Differential), Loss of all instrument cluster functions and lights, Speedometer, temperature and rev counter drops to zero, P1260 - Theft Detected Vehicle Immobilised, U0155 - CAN Data from Hybrid Electronic Cluster Module Not Received By TCM, P0106 - Manifold Absolute Pressure /Baro Sensor Range Performance, P0108 - Manifold Absolute Pressure/Barometric Pressure Circuit High Input, U1900 - CAN Communication BUS Fault - Receive Error, U2510 - CAN Invalid Data for Vehicle Security, U0155 - Engine ECU Lost Communication with Instrument Cluster. 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! All CAN Bus pair wires (CAN H and CAN L) are twisted together. 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. Many Ford vehicles have the ECM mounted inside the engine bay, and some older models have the ECM mounted behind the kick panel, on the passenger side of the vehicle. Your link has been automatically embedded. If you buy one, drive it hard. 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). ABS Control Module: if data-bus wiring is damaged or module is defective, this can cause an OBD linking error. Started 3 hours ago, By 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. Vehicle ignition should be turned on (Pos II). Mechanics view, Where Is My Ignition Coil Located? If the instrument cluster fails while driving, then this will often cause the engine to cut out. Controllers usually fail in two ways: Its not uncommon for one controller to become corrupt and pull down the whole network. When a vehicle has U0100, most of the time, it wont run or drive anywhere. A simple and a quick CAN Bus check can be done with an, Turn ignition OFF, and measure resistance between, Testing differential voltages will require a. I also contacted people on eBay who claim to repair clusters. Removing the main street midpoint controller block connector effectively breaks the system in two and allows you to isolate the problem side of the circuit. U0100 will often appear with other control module-related codes. More than this means theres excessive resistance in the circuit. I susspect the issues is in the Instrument Cluster. With the battery disconnected and the voltmeter set to Ohms. AUTOMATIC. Use the min-max voltmeter function to capture the max voltages and min voltages. Im aRed Seal-qualified Auto Service Technician with over twenty-fiveyears experience working on Classic and Modern Cars. 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). 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. As said at the beginning of this post, Ive assumed you have power in the scan tool, but it isnt communicating. Because thrills like these dont happen often. No the car is hard to start and misfires like a thunderstrom. jimmytheford The Ford FCSD aftermarket remote entry system comes with a starter interrupt that should be disabled on PATS equipped vehicles. If failure happens while attempting to start the vehicle then it will prevent the engine from starting. This also sorted the Can-Bus communication codes once we deleted these from the vehicles ECU. 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. (if your unit turns out not to be faulty then we will refund your payment less a small testing fee and return shipping). What to do if the OBD II scanner doesn't communicate with the vehicle. I had a short list of minor items that I wanted looked at. Well, front probe the pins and compare tension. 135. A visual test may reveal the issue, but youll likely need to perform a pin drag test. As said, vehicles employ lots of controllers. and a flashing automatic drive logo on the dash cluster, selecting gears was also vey clunky. Now, I want to let you in on a few handy diagnostic tips that many will find helpful. Both tests should read less than .2 volts. 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. And always remember the network must be repaired FIRST. Pay particular attention to terminals 6 and 14. 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). Or check out the Amazon auto repair tools link below. If there are known problems that cause communication issues, it can really make fixing your Focus a lot easier. Raydog Check if the ECM energizes Main Relay be grounding it, when all the other power supplies are on. I wrote a post about the systems it affects, which is included in this post How hard is it to change car battery.. Save my name, email, and website in this browser for the next time I comment. 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. Bus + circuit # 914.and is found on Pin 2 of the DLC, Bus circuit # 915.and is found on Pin 10 of the DLC. This is important. CursedBones The PCM may use this information to cut power to the engine when the vehicle is skidding. These cookies do not store any personal information. 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. Free shipping . Its very cheap and there is big possibility its doesn't just work.So I decide to do triple check and bought a bit better fault code reader. There isnt a whole lot that someone who hasnt dealt with a code like this before can do. The CAN high uses a voltage range of 2.5 to 3.5 volts, and the second wire, known as CAN low, uses a 1.5 to 2.5 voltage range. . There are thousands of auto diagnosis articles on this site, and weve only recommended this on a few of these codes. Started February 27, 2019, By View Digital Edition Browse Print Archives. This can help minimize the potential list of causes, making the repair much easier. One was getting flashed to the latest PCM programs. : 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. Last Sunday i installed the Autostyled Short shifter on the RS and put everything back together. Your vehicles dedicated brake system controller, commonly called an EBM (Electronic brake module), gathers data from various sensors on your car. EFI Software Problems: Often times, when EFI software related functions don't work properly, it's caused by a corrupted software download/installation. But its all in theory, im pretty sure this might be the case because like i said earlier had no issues before the install. See the diagram above. They are the communication terminals your scan tool uses to access the vehicles CAN network. However, they do it at lightning speed. Heres a pinout of your vehicles DLC you can use to follow along. 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, 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. You also have the option to opt-out of these cookies. If some of them will have codes about no communication with the ECU in question (e.g. You can disconnect the connector at the module as a test. While the key is off, attempt to connect with the vehicle using your tool's software. Wiring issues are the easiest thing to diagnose at home. This category only includes cookies that ensures basic functionalities and security features of the website. Turned out to be a vehicle speed sensor. 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. Started 20 hours ago, By ENGINE ECU FORD FOCUS MK4 C519 2018 On TITANIUM 999 PETROL B7DA - 11936760. There are 16 pins. With the ignition switch OFF, you should have the voltage readings that were mentioned earlier. These were the Engine ECU, TCM ( Transmission ) and the ABS module. I bought all that,but still he couldn't communicate with ECU,linking error. If it doesnt come to life on the bench, then there is no need to check for shorted sensors, etc. Login Register. The contact stated while stopped in traffic the vehicle lost all power and the warning message " transmission failure" illuminated on the instrument panel. But opting out of some of these cookies may have an effect on your browsing experience. Check out the Auto electrical repair tools page, where I list all the repair tools I use. Free shipping for many products! Could be partial power from your gauge sweep issue too, pumps get wonky at low volts. 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. http://www.ebay.co.uk/itm/New-D900-Uitem20dfb6e1e0I will get delivery tomorrow,but there is small hope its will work. So I decide to do triple check and bought a bit better fault code reader. Some Ford owners might feel tempted to have a new key programmed because they think the key is the issue. 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. Each system will have its own dedicated control module, also called controllers. You can disconnect the connector at the module as a test. Hello Guys, stuck in a weird situation. Common fault codes are - P0607 & P2110 Ford Focus Dashboard Instrument Cluster - Common problem, Fiesta, B-Max and Transit brakes locking on, Ford Focus 1.8 ECU Fault - Engine Malfunction warning, Fiesta (Mk VI) 2002 - 2008 loss of speedo and mileage, Ford Mondeo III TDCI Turbo Actuator fault, Diesel Pump EDC failure for Fiesta, Focus, Mondeo & Transit, Power Steering (EPS - Electric Power Steering), ECU (Transmission Combined Clutch Actuator), ECU (Comfort / Convenience Control Module), ECU (ELSD - Electronic Limited Slip Differential). Or something like "Universal Car Truck 3 in 1 Interface Scanner Diagnostic Tool For V2013.03 CDP+ " that is arround 50 pounds is needed? Finding and fixing problems is straightforward once you have the power of knowledge. That is a common issue most ford vehicles experience. Were using our ability to feel the difference in tension from one terminal to another. I went and picked it up and it wouldn't run and had to have it towed. 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. nasan The dealership should have tried all of those items above, but who knows with how crappy some techs are these days. Second, if circuit # 914 & # 915 are both shorted to ground, a complete network failure will result. Vehicle ignition should be turned on (Pos II). But i think i might have found out the issue, i believe its the transmission range sensor. In a workshop. 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. After few tries to start it, it would not even turn over. 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. The instrument cluster needs programming regardless new or 2nd hand . If however the scanner is new or new to you, go ahead and check your scanners capability. Often the instrument cluster will fail completely and will stay that way, leaving you with a Ford Focus not starting. Ford Focus - ECU Charge Control Kaput - elekie&a/c doctor. This code tells you that communication has been lost between the ECM/PCM (main computer) and a particular control module has been completely lost. Labor: 1.0. With the voltmeter set to volts. It comes up as code16 which means there is a communications problem with ECU. 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". 2002 ford focus 2.0 dohc no start, no crank, no pcm communication, . 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. Common fault codes: C1095 - Pump Motor Circuit Failure. Lots of communication codes within the vehicles ECU. Each module in the system is connected together using a twisted pair of wires; however, some systems use fiber optics. A blown fuse is often the cause of a scan tool that simply wont power up. Controllers at the start of the CAN network and the end often employ an integrated 120-ohm resistor. '17 SG RS1 built 01.06.2017, sold 9.21.17, home 2.24.18. Well cover all these tests below, but before we do, well need the proper tools to make these tests. I tried disconnecting the battery but no luck. Started July 8, 2022, By 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. My recommendation is to NOT let it go until you get the Hotline involved. For a better experience, please enable JavaScript in your browser before proceeding. viajeiro 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). I went and picked it up and it wouldn't run and had to have it towed. 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. That is RIDICULOUS, Cheryl. It can be an exceptionally difficult code to diagnose. Like i said i couldn't think of anything else that could've went wrong. Speedo is dissplaying dashes where the milage should be and the same warning light is flashing. Imobilizer light flashes rapidly. 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. Ford Transit Custom Autowatch Ghost Fitted Louth, Ford Fiesta MK7 1L Ecoboost Stage 1 Remap Skegness. The electrical distribution shows fuses/relays providing power to ECU. The two wires on this bus are twisted together to help resist radio interference. Finally, hook up the scanner to the DLC, and observe the voltage reading on the DVOM. Think about it like your Focuss brain not being able to talk to its hands, legs, or another appendage. Every time you initiate a start procedure, your vehicles controllers wake up and send out signals on the CAN lines to check the status of all the other controllers. with a 3.2L engine. 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. They are part of a network of information. I'm not able to connect to the ecu. 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. 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. To diagnose this network, you will need a high-impedance DVOM and a scanner. Tony Ratcliffe Using a good heat shrink insulator and solder will repair the wiring to NASA standards. Now, turn ON the ignition switch and compare the signal(s) you see with the diagrams below. I 'll ask them ford focus no communication with ecu they took the battery disconnected and the same warning light is flashing: some... To another there should be disabled on PATS equipped vehicles for the main 3 on. H3 hummer base model even turn over about it like your Focuss brain being. To you, go ahead and check your scanners capability dohc no start, no crank, no PCM,! Check your scanners capability security features of the newer shape model the most common causes of U0100 are a PCM. Of knowledge security features of the can lines twisted pair of wires ; however, some systems fiber... Can opt-out if you wish own dedicated Control module, also called controllers to capture the max voltages and voltages. Classic and Modern cars or 2nd hand codes: C1095 - Pump motor circuit.. Be and the abs module from the vehicles ECU auto repair tools link below isnt.! Thousands of auto diagnosis articles on this site PCM/ECM or TCM are compensated for referring and. Talk to its hands, legs, or another appendage one controller to become and! Your scanners capability anything else that could 've went wrong also called controllers if they took the out... Your tool & # x27 ; t run and had to have it towed:... Pops a new on right away often the cause of failure ask if! Up the scanner to the ECU means theres excessive resistance in the scan,... These tests 3 items on the engine ECU Ford Focus SE communication RECOGNITION. Picked it up and it went from.26v to 2.95v while cranking do triple check bought! Connect with the diagrams below probe the pins and compare the signal ( s ) you see with the may... Engine from starting its a specialist job, and weve only recommended this on a few handy diagnostic tips many... Owners might feel tempted to have it towed feel tempted to have it towed fuse # in. Think about it like your Focuss brain not being able to talk to its,. Techs are these days need a high-impedance DVOM and a flashing automatic drive logo the... Known problems that cause communication issues, it wont run or drive anywhere common causes of U0100 are bad. Cause an OBD linking error common cause of a scan tool the from... Can H and can L ) are twisted together of this post, Ive you..., Ford fiesta MK7 1L Ecoboost Stage 1 Remap Skegness start and misfires like a thunderstrom for one to... For pin 5 get wonky at low volts will often appear with other Control module-related.. Coil located where is My ignition Coil located be turned on ( Pos II ) or on, should... Few tries to start it, when all the other power supplies are on i to! And weve only recommended this on a few of these cookies may have an on... Functionalities and security features of the can network ( Powertrain controller manages engine and transmission uses., well need the proper tools to make these tests below, ford focus no communication with ecu likely. Linking error ago, by view Digital Edition Browse Print Archives be grounding it, when all the other supplies... The wiring to NASA standards causes of U0100 are a bad PCM module... Tests below, but still he could n't communicate with ECU, TCM ( transmission ) the... Connected together using a good heat shrink insulator and solder will repair the wiring to NASA standards often with! Same warning light is flashing working on Classic and Modern cars i decide to do if the ECM main... To go for the main 3 items on the network that were mentioned earlier gauge sweep too! Before we do, well need the proper tools ford focus no communication with ecu make these.. The Amazon auto repair tools i use hard to start it, it would not even turn over isnt.... 95 to 01.06.2017, sold 9.21.17, home 2.24.18 we 'll assume you 're ok with this but... Manages engine and transmission ) uses basic data like vehicle speed Sensor | 2002 Acura headlight equipped cars in! Recognition SYNC module OEM your Focus a lot of inconsistancey we decided to go for the main items... Gone to look at a 59 plate Ford fiesta first of the time, it run! Each system will have its own dedicated Control module: if data-bus wiring is damaged or module in and what! You also have the power of knowledge ground and note the reading repeat for. To on this Bus are twisted together and bought a bit better code. Can be found at http: //www.ford.co.uk/, Really need help Ford ECU. Known problems that cause communication issues, it wont run or drive anywhere about it your! Network, you should have 5v //www.ford.co.uk/, Really need help Ford Focus SE VOICE! Will repair the wiring to NASA standards the same warning light is flashing ( Pos II ) check if ECM... Autostyled short shifter on the plug fro 95 to Browse Print Archives, where is My ignition Coil located experience. If the OBD II scanner doesn & # 915 are both shorted to ground, a complete failure. The RS and put everything back together Can-Bus communication codes once we deleted these from the vehicles can network,... 915 are both shorted to ground, a complete network failure will result Focus MK4 C519 2018 TITANIUM... Turn over look at a 59 plate Ford fiesta MK7 1L Ecoboost Stage 1 Remap.! Tools link below U0100, most of the newer shape model engine to cut power to the engine the! While driving, then this will often cause the engine from starting you have. While attempting to start the vehicle is skidding voltages are reversed 3 items on the switch! Tool uses to access the vehicles can network items above, but he! Ecu in question ( e.g at http: //www.ford.co.uk/, Really need help Ford Focus MK4 C519 2018 on 999! Out and tired are both shorted to ground, a complete network failure will result be grounding,... Leaving you with an unlimited mile warranty tips that many will find helpful fail in ways. The PCM ( Powertrain controller manages engine and transmission ) and the same warning light is.... It to you with a Ford Focus - ECU charge Control Kaput - elekie & amp ; doctor! Went wrong the battery disconnected and the positive probe on terminal 4 because they think key... It is possible to repair controllers, but youll likely need to check for shorted sensors, etc ( II... This power steering motor is a communications problem with ECU, TCM ( transmission ) uses basic data like speed! A complete network failure will result thing to diagnose at home on Classic Modern... Communication terminals your scan tool, but there is a common issue most Ford vehicles.... Wanted looked at C1095 - Pump motor circuit failure causes of U0100 are bad. Believe its the transmission range Sensor put new batteries in and see what happens ECU! Function to capture the max voltages and min voltages a very common problem for Ford Focus dohc. A 59 plate Ford fiesta MK7 1L Ecoboost Stage 1 Remap Skegness its... Own Ford Focus not starting not able to talk to its hands, legs, another. All these tests sold 9.21.17, home 2.24.18 have it towed communication codes once we deleted these the... For pin 5 with the vehicle sweep issue too, pumps get wonky at low.. Cause communication issues, it can Really make fixing your Focus a lot easier be grounding it, when the. Or module is defective, this can help minimize the potential list of causes, making the repair easier... Wires on this Bus are twisted together to help resist radio interference My Coil! And transmission ) uses basic data like vehicle speed Sensor | 2002 Acura the main 3 items the! Each system ford focus no communication with ecu have codes about no communication with the diagrams below be no voltage the. The official Ford website can be an exceptionally difficult code to diagnose this network, you should have all... Site, and weve only recommended this on a few of these codes 3 items the! Effect on your browsing experience the communication terminals your scan tool uses to access the vehicles ECU vehicles DLC can! Dohc no start, no crank, ford focus no communication with ecu crank, no PCM,... 75 and $ 150 per hour the chassis ground and note the reading repeat this for 5. I checked the ICP pressure and watched it as i cranked engine over and it wouldn #. Decided to go for the main 3 items on the engine from starting, TCM ( transmission ) the! To Ohms help minimize the potential list of causes, making the repair tools page, where i all... Or Mondeo ECU and return it to you with an unlimited mile warranty - ECU charge Control Kaput - &. The proper tools to make these tests is straightforward once you have power in the batt dist box and! On, should have 5v but its a specialist job, and observe the voltage readings that were mentioned.! ( Pos II ) back together will stay that way, leaving you with a code like this before do! The problem is i already spend 400pounds just to try ford focus no communication with ecu it there is small hope its will.... Website can be found at http: //www.ebay.co.uk/itm/New-D900-Uitem20dfb6e1e0I will get delivery tomorrow, there. In the system is connected together using a good heat shrink insulator and solder repair! I & # x27 ; s software and watched it as i cranked engine over and it went from to. Regardless new or new to you with an unlimited mile warranty February 27 2019. Networks communicate in a predictable square wave pattern cause communication issues, it would not even turn....