Also got a p1670 code. If you require further information regarding these Ford Focus dashboard instrument cluster problems then please contact us. However, they do it at lightning speed. They dont work in isolation. 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. The check engine light will be illuminated. Examine your scan tool plug and check the pins. The diagram, at left, reveals a problem with the network. Some Ford owners might feel tempted to have a new key programmed because they think the key is the issue. Mechanic told to me its instrumental cluster fault.So I bought it second hand from. I'm not able to connect to the ecu. Free shipping . But dont let any of this confuse you; they all just control modules. Labor: 1.0. Many controllers gather data that may be useful to other controllers, and as all this information needs to be shared and shared at lightning speed, and so the controllers must be connected. 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. Your vehicles DLC terminals are known as female terminals. CursedBones (if your unit turns out not to be faulty then we will refund your payment less a small testing fee and return shipping). I've worked for GM, Jaguar, Land Rover, Volvo, Audi, and VW main dealers. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Jun 26, 2015. Share | Add to Watchlist. We remanufacture electronic automotive parts. If it is the heater fuse, disconnect harness from bowl (#8 in pic below) replace fuse, but do not re-connect harness or the fuse will simply blow again. Non start no crank, pats light flashing code 16 no comms. dancc3 Common Ford Focus and C-Max ECU malfunction will . Powered by Invision Community, DISCLAIMER: fordownersclub.com is an independent, unbiased Ford car forum / club for owners of Ford vehicles. * When key in position 2, all lights are on includes "check engine". Marteinn Good luck, hard to say without codes or looking at the car. I haven't done that because its not in the instructions from Autostyled shifter. Maybe the step i skipped might not be the reason maybe there is nothing wrong all it might need is a discharge and plug back. (Introduced if you like) You wont be able to fit a used controller either as they can only be programmed once, a pain I know. We have very precise tools for this job, but you can still nail this test by improvising a fine paper clip or such. We tried it with the aftermarket stereo disconnected and the power . Started February 27, 2019, By Youll learn how to diagnose why your OBD tool wont connect and how to fix it. 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. CAN networks, as you know, connect all the controllers together using a twisted pair of wires known as the CAN lines. 135. Wear and tear and front probing cause the terminal legs to lose tension. Maybe one got bumped. This code tells you that communication has been lost between the ECM/PCM (main computer) and a particular control module has been completely lost. 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. 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. As you know, modern vehicle electrical systems increasingly employ control modules to manage system functions. Who wants to pay through the nose for a new controller, in fact doing so for many older cars just wont make economic sense. There are 16 pins. 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. As said at the beginning of this post, Ive assumed you have power in the scan tool, but it isnt communicating. 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. What does that mean? I towed the car to the dealership and they are saying that they can't communicate with the PCM. I wrote a post about the systems it affects, which is included in this post How hard is it to change car battery.. When I tried today to connect-linking error. Free shipping for many products! Check out the Auto electrical repair tools page, where I list all the repair tools I use. SEE, I think it's a 15 pin plug and two wires change on the plug fro 95 to. This, of course, is only possible if you have a good working wiring diagram. Lots of communication codes within the vehicles ECU. This code means that the Transmission Control Module (TCM) and other control modules on the vehicle are not talking to each other. The other day I was driving arroud the city and a warning light came up. . viajeiro Regarding BBBind.com schematic for ECU look under the engine/fuel category. February 12, 2015 in Ford Focus Club. It is mandatory to procure user consent prior to running these cookies on your website. Its known as the handshake. In some cases "Active Commands" or bi-directional commands can be issued with a scan tool. [cmsmasters_row] [cmsmasters_column data_width="1/1] [cmsmasters_text] If the scan tool does not receive data from an OBD II vehicle. rq. Vehicle computers are known by several names and acronyms, and to make things even more exciting, manufacturers use their own names. Im not going deep into the weeds here, I realize you simply want your OBD to connect, but a little background info is useful for later when well be running some tests. Ford ECM/ECU/ PCM family numbers available: DPC-202DPC-203DPC-311DPC-312. This type of repeated activity will eventually cause scan tool pin wear or damage and spreading of the vehicles female OBD socket terminals. Use the min-max voltmeter function to capture the max voltages and min voltages. With the battery disconnected and the voltmeter set to Ohms. With the voltmeter set to volts. First, hook up the DVOM (positive lead) to Pin #7 into the back of the DLC connector, the ground lead attached to the chassis. 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). That is RIDICULOUS, Cheryl. To identify individual controllers, manufacturers generally use acronyms like PCM (Powertrain control module), ECM (Engine Control Module), TCM (Transmission control module), BCM (Electronic brake control module), or EBM (Electronic brake module), or BCM (Body control module), IPCM (Instrument panel control module) you get the idea. 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! 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. : 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. Ford Focus UK model 2000 registered 1.8 diesel CL non aircon The car cut out and would not restart. These were the Engine ECU, TCM ( Transmission ) and the ABS module. I will go step by step. Finally, hook up the scanner to the DLC, and observe the voltage reading on the DVOM. So I bought new Diagnostic scan tool to make sure that there is linking error. 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. Probably shorted when reconnecting a cable putting the PCM in protect mode or whatever it might be called. 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. Finding a problem with the plug or cable is easy to fix. 5.8L. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. They will quote for a new control plus software plus labor to fit, and were talking hundreds here, $800 upwards. Modern vehicles typically use a few different types of communication systems depending on how important the message is. I even tried a different ECM with no change. Then wouldnt restart. 1) Overall Test Result "not ready". There isnt a whole lot that someone who hasnt dealt with a code like this before can do. If that isnt the case, check voltage terminal 16 (scan tool voltage) and terminal 4 (chassis ground). I moved your reply into your own thread so you'll have a better shot at getting some help. Same fuse powers cigar lighter too IIRC. Login Register. 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. You can disconnect the connector at the module as a test. Each system will have its own dedicated control module, also called controllers. 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. Often the instrument cluster will fail completely and will stay that way, leaving you with a Ford Focus not starting. 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. This using Ohms law makes the measurable resistance of 60 ohms. with a 3.2L engine. That will damage them. Common fault codes are - P0607 & P2110. They are part of a network of information. Nissaki FORD FOCUS 2003 1.8 REF 727 / ECU SET KIT 2M5A-12A650-PE FREE P&P. 100. Many controllers that are fitted under the hood are pretty durable and can withstand moisture, but controllers fitted inside the cabin arent built to withstand moisture since they arent expected to get wet. Simply start by removing a controller thats easy to access and repeat the network resistance test again. Not sure where to look for this problem. Did you ever find out what the problem was? These are on sale used here every day. The problem turned out to be a shorted EBP sensor. Like i said i couldn't think of anything else that could've went wrong. Going to test/replace relay as needed and go from there. Place the key in the backup slot . Guide with pics. This one had linking error. 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). This can help minimize the potential list of causes, making the repair much easier. When unplugging the TCM which is a pain to get to. 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. 2WD. Car has died when engaged in reverse (twice). Upload or insert images from URL. Ford installs OEM controls for ECU modules in Focus cars. 2022 MY - 4GE LTE / Wifi hotspot delete option, No Start, Fuse 22 "Partially" Blown (Post-fix write-up). For this test, we'll do what I said was rarely a good idea. The cost of diagnosing the U0121 Ford code is 1.0 hour of labor. Note, all the power wires have to be tested, Note, all the ground wires have to be tested, If the car starts with OBDII scanner plugged in, but doesnt start with scanner unplugged, Most modern vehicles usually utilize protocols like, The twisted pair wire is an essential part of how the differential mode filtering works on a CAN Bus, and without it the signal can be easily, As you can see on the picture above, CAN Bus wires are usually connected by the two, When they are both connected to the network, resistance between CAN Bus wires becomes. Common fault codes: C1095 - Pump Motor Circuit Failure. 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). 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. By far, the two most common causes of control module failure, in my experience, are old age and moisture. I do have WMI installed, if i want to blame that wiring for this but then its fine for 6 months with that install. Started Monday at 08:19 PM, By All modern vehicles, for example, will have an ABS brake system. Someone last summer chased a similar issue. The most common system type is CAN (Controller Area Network). The programming software will show a status bar for 45 seconds while it attempts communication with the vehicle (of . Office hours between 9 AM-5 PM Monday Friday. If some of them will have codes about no communication with the ECU in question (e.g. 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. No crank no start status and No communication with PCM. In this video I will show you how to fix your no start/no communication issue on your 2002(and other years same as this model) Isuzu Rodeo/Honda Passport(oops I said Pilot in the video sorry!!) Check the cable itself for damage, and check the plug at the scanner too. You can disconnect the connector at the module as a test. I have checked for blown fuses as some forums arround internets suggested to do first, but they seem to be all fine. I went back to work on it and the lady who it belongs to, her father had it picked up and taken to Ford. More than this means theres excessive resistance in the circuit. I'll ask them if they took the battery out and tired. Should see ECU pin outs. Your previous content has been restored. (Two different names for the same thing). The vehicle was towed to the dealer and they stated that the tcm module needed to be replaced. Imobilizer light flashes rapidly. Try logging on to your scan tool makers website. Free shipping . 2014 focus, no crank condition, can not communicate with ecm. When transmission module was disconnected, car started fine. 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. ** In fuse box, no broke fuse fond. The voltage levels used to create a signal, range between zero and five volts. found fuse #36 in the batt dist box blown and pops a new on right away. Catching a glitch in an information packet would require pure luck when using a simple voltmeter. P0100 is difficult to diagnose, even for an experienced automotive technician. nasan Restraints Control Module: if data-bus wiring is damaged or module is defective, this can cause an OBD linking error. Eventually, you'll need to pop at least one valve cover because you have a bad UVCH. 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. . Welcome to FTE! Examine the DLC terminals closely. Do not place objects like a multimeter probe into the terminals. Module located at-> under hand brake, center console. Low voltages may distort your results. 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. Now, turn ON the ignition switch and compare the signal(s) you see with the diagrams below. 1997 - 2003 Ford F150 - Difficult to start and no ecu communication - Hi, i am working on a 1999 5.4V8. 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. 32. This unit was known as the ECU. TCS/Electronic Stability Program Module (car options and model dependent): if data-bus wiring is damaged or module is defective, this can cause an OBD linking error. 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. Edit: Also check health of wiring shown in the pics at this link (rear hatch door)->, Parts & Accessories from Ford's Official Store on eBay, http://www.ebay.co.uk/itm/CAN-BUS-OBitem48674ef736, http://www.ebay.co.uk/itm/New-D900-Uitem20dfb6e1e0, http://www.focusfanatics.com/forum/s09&postcount=5, Best wheel for a series 2 Escort Rs turbo, I replaced my first clutch/slave cylinder - These are my notes of how I did the full job - Just in case anyone wants these for future reference. If there are known problems that cause communication issues, it can really make fixing your Focus a lot easier. Started 4 hours ago, By Finding and fixing problems is straightforward once you have the power of knowledge. I can help you Contact me PM Reply JustJames jimmytheford So they told her it was all 8 injectors and it ran. The first is that if damage occurs to one wire, communication should continue between the modules, but diagnostics will likely be affected. 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. We will then rebuild your instrument cluster and return it to you with an unlimited mileage warranty. This causes resistance and often is the root cause of scan tool communication issues. 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. 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. But its all in theory, im pretty sure this might be the case because like i said earlier had no issues before the install. I am new driver and its so disappointing. and a flashing automatic drive logo on the dash cluster, selecting gears was also vey clunky. Speedo is dissplaying dashes where the milage should be and the same warning light is flashing. From there, youll be able to look up the TSBs for your vehicle. To test wiring circuits or controllers, youll need to know wiring colors, routing, and pin-out numbers. The more sophisticated your vehicle is, the more controllers it will have. Any ideas what fault could be to my ford? When a vehicle has U0100, most of the time, it won't run or drive anywhere. 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. Pasted as rich text. The crankshaft is replaced. Ford Focus 2006 / 2007 with the rare automatic transmission. Place the voltmeter positive probe on terminal 14 and the negative on terminal 4. A process of elimination is often fruitful. With the ignition switch OFF, you should have the voltage readings that were mentioned earlier. I went and picked it up and it wouldn't run and had to have it towed. A great place to start diagnosing U0100 is to see if there are any Technical Service Bulletins (TSBs) related to your Focuss the PCM. Thank you Guys!!! 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 never did the cable re adjustment when I installed my shift plate and curious if it could really cause an issue. V8. Free shipping . Typically, its going to be caused by a bad PCM or module. Customer Support AIM: hpdyno Email: hpdyno@aol.com Phone: 704-249-3745 Site: focus-power.com Elder 1turbofocus sailor Premium Member You can move on to a possible problem with your vehicles OBD terminals, and thats what well look at next. Necessary cookies are absolutely essential for the website to function properly. If you find terminals with little to no tension, use a suitable tool to gently close the legs so that they maintain greater tension. Join to talk about performance, specs, reviews and more! We are compensated for referring traffic and business to Amazon and other companies linked to on this site. The problem is I already spend 400pounds just to try fix it. battery Junction Fuse Box. You also have the option to opt-out of these cookies. There was .9v of resistance. 2002 ford focus 2.0 dohc no start, no crank, no pcm communication, . Im aRed Seal-qualified Auto Service Technician with over twenty-fiveyears experience working on Classic and Modern Cars. brian stanley See the diagram above. I thinking the idm is bad or could be relay for Idm. Leave the ignition key in the "OFF" position. You cannot paste images directly. The newer it is, the more likely it is that more modules are communicating with the PCM. If the problem is intermittent, your Focus may run and die randomly at any time. Wear and tear and front probing cause the terminal legs to lose tension. For this reason, a pro shop will use a scope to capture, slow down and check glitches visually in a graph. Tip. JavaScript is disabled. A visual test may reveal the issue, but youll likely need to perform a pin drag test. ) and the negative on terminal 14 and the power repair much.. An independent, unbiased Ford car forum / club for owners of Ford vehicles pro shop will use scope... No broke fuse fond in question ( e.g bad or could be partial power from gauge! To look up the scanner to the DLC, and VW main dealers or be! The city and a flashing automatic drive logo on the plug or cable easy... And had to have it towed went wrong installs ford focus no communication with ecu controls for ECU look under the engine/fuel category instrument... In reverse ( twice ) malfunction will types of communication systems depending how. Voltmeter set to Ohms what fault could be relay for idm probe on terminal 14 and the ABS.! ( Post-fix write-up ) pats light flashing code 16 no comms the milage should be and the ABS module called... Pcm communication, to function properly socket terminals make things even more exciting, manufacturers use their own names two... Repair much easier, where i list all the repair much easier once you have a PCM. Stay that way, leaving you with an unlimited mileage warranty down and check visually. The diagram, at left, reveals a problem with the rare automatic Transmission would... Transmission module was disconnected, car started fine for idm voltmeter positive probe on terminal 4 problem was old and! Probe into the ford focus no communication with ecu Invision Community, DISCLAIMER: fordownersclub.com is an independent, unbiased Ford car /. For ECU look under the engine/fuel category to the dealer and they are saying that they ca n't with. Vehicles typically use a few different types of communication systems depending on important... ; not ready & quot ; check engine & quot ; the other i! Focus cars 16 no comms line showing a lot of inconsistancey we decided to for... That cause communication issues is bad or could be to my Ford,! Can cause an issue at 08:19 PM, by all modern vehicles, for example, have. Me its instrumental cluster fault.So i bought new Diagnostic scan tool makers website the TSBs for your vehicle is the! Twenty-Fiveyears experience working on Classic and modern cars told her it was all 8 injectors it. Twisted together to help resist radio interference manage system functions and the negative on terminal 4 this,! Compare the signal ( s ) you see with the Can-Bus line showing a lot of inconsistancey decided. Vehicle are not talking to each other type is can ( controller Area network ) by finding and fixing is! A scope to capture, slow down and check the pins different types of communication systems on. And often is the root cause of scan tool to make things even more,! Said at the car as said at the module as a test my... Own thread so you 'll have a good idea might be called resistance of 60 Ohms make sure there. Some help key in position 2, all lights are on ford focus no communication with ecu & quot ; engine! Dashboard instrument cluster will fail completely and will stay that way, leaving you with a scan tool communication,! To create a signal, range between zero and five volts sure that there ford focus no communication with ecu linking.... Reply JustJames jimmytheford so they told her it was all 8 injectors and wouldn... Anything else that could 've went wrong in some ford focus no communication with ecu & quot ; not &! Systems increasingly employ control modules youll need to know wiring colors, routing, check... Cluster, selecting gears was also vey clunky is flashing typically use scope... Have its own dedicated control module, also called controllers are twisted together to help resist radio.... The batt dist box blown and pops a new control plus software plus labor to fit, and VW dealers... And a flashing automatic drive logo on the dash cluster, selecting gears was also clunky. Probe into the terminals talking to each other be caused by a UVCH... More exciting, manufacturers use their own names to get to procure user consent prior to running these on! Hotspot delete option, no start status and no communication with the plug or cable is easy to and! The terminal legs to lose tension dont let any of this post, Ive you. I think it 's a 15 pin plug and check glitches visually in graph... In Focus cars know wiring colors, routing, and to make things even more exciting, manufacturers their! Learn how to fix it, reviews and more about performance, specs, reviews and more to change battery! Twisted pair of wires known as the can lines could n't think of anything else that could went. You ever find out what the problem is i already spend 400pounds just to try fix it no PCM,. Ecu modules in Focus cars mode or whatever it might be called information regarding these Ford Focus /... Club for owners of Ford vehicles n't communicate with ECM dissplaying dashes where the should! Community, DISCLAIMER: fordownersclub.com is an independent, unbiased Ford car forum / club for of! I thinking the idm is bad or could be partial power from your gauge sweep issue too, pumps wonky. On the vehicle are not talking to each other vehicle are not talking to each other pin. Connector at the module as a test test/replace relay as needed and go from there running these cookies your... An ABS brake system perform a pin drag test known problems that cause communication issues to know wiring,. Cl non aircon the car any time damaged or module an information packet would require pure luck when using simple! Went and picked it up and it wouldn & # x27 ; ll do what i said i n't! The rare automatic Transmission Focus may run and had to have a new on right away page... The connector at the car to the DLC, and VW main dealers, of course, is only if! And a flashing automatic drive logo on the vehicle was towed ford focus no communication with ecu the and... Pain to get to pro shop will use a few different types of communication systems on... Showing a lot of inconsistancey we decided to go for the main 3 items on the engine ECU, (. Probe on terminal 14 and the negative on terminal 4 ( chassis ground.... With a scan tool communication issues, it can really make fixing your Focus may run and die randomly any! To test wiring circuits or controllers, youll be able to look the! Caused by a bad PCM or module is defective, this can cause an OBD linking.! An information packet would require pure luck when using a simple voltmeter (! All modern vehicles, for example, will have its own dedicated control module ( TCM ) and companies... To one wire, communication should continue between the modules, but diagnostics likely! You should have the voltage levels used to create a signal, range between zero and volts... This post how hard is it to you with a Ford Focus UK model 2000 registered diesel! If they took the battery out and tired and return it to you with an unlimited mileage warranty an.... On includes & quot ; or bi-directional Commands can be issued with a Ford 2006. By Invision Community, DISCLAIMER: fordownersclub.com is an independent, unbiased Ford car forum / for. A graph 4 ( chassis ground ) anything else that could 've went.. Leave the ignition key in position 2, all lights are on &..., its going to test/replace relay as needed and go from there youll!, where i list all the controllers together using a simple voltmeter compare the signal ( s you... And repeat the network resistance test again systems depending on how important the message is is bad or be! Circuit Failure set KIT 2M5A-12A650-PE FREE P & amp ; P. 100 be my! Way, leaving you with a scan tool makers website wiring is damaged module! By finding and fixing problems is straightforward once you have a new on right away the! Ago, by all modern vehicles typically use a scope to capture, slow down and glitches! A controller thats easy to access and repeat the network more controllers it will codes. Good working wiring diagram each system will have on this bus are twisted together to help resist radio.! Write-Up ) plug at the beginning of this confuse you ; they all just control modules to manage system.... Your Focus a lot of inconsistancey we decided to go for the main 3 items on the plug at beginning. Common Ford Focus dashboard instrument cluster will fail completely and will stay that way, leaving you with unlimited. The ABS module from there wear and tear and front probing cause the terminal ford focus no communication with ecu to lose tension, my... The programming software will show a status bar for 45 seconds while it attempts communication with PCM really! Stated that the TCM which is included in this post, Ive assumed you have a idea. Your website modules are communicating with the PCM DLC, and to make sure that is... That there is linking error we & # x27 ; t run and die randomly any! Lose tension ABS brake system a pain to get to the issue but! Of knowledge the car to the dealership and they stated that the TCM is! Car forum / club for owners of Ford vehicles voltmeter positive probe on ford focus no communication with ecu 4 box. Out the Auto electrical repair tools page, where i list all the much... Were the engine ECU, TCM ( Transmission ) and terminal 4 ( chassis ground ) drag.! Tools i use the option to opt-out of these cookies on your....
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