You cannot paste images directly. 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. dancc3 They can be almost anywhere. Clean the battery terminals and other connections too: 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. The PCM (Powertrain controller manages engine and transmission) uses basic data like vehicle speed to perform timely fueling or gear change decisions. Your link has been automatically embedded. The ISO 9141 network, is a single-wire, and is often identified as Circuit 70. Now, measuring resistance not at the DLC but instead at CAN In and CAN Out (at the disconnected controllers block connector) will identify which side of the circuit is at issue. There are thousands of auto diagnosis articles on this site, and weve only recommended this on a few of these codes. Turned out to be a vehicle speed sensor. 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. What does that mean? The fault could also, of course, be a wiring issue between the suspected faulty controller and the network. This website uses cookies to improve your experience. How guys from garage said.If there is some wiring problem that will cost fortune to me. 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. I have checked for blown fuses as some forums arround internets suggested to do first, but they seem to be all fine. The information is processed by the EBM, and action is taken according to its software parameters. 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. 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. Started December 13, 2022, By Its now time to take the diagnostic procedure process outlined in that article and apply it to some real vehicles. Vehicle ignition should be turned on (Pos II). The duty of these units is to control most of the electronic functions. When one of these modules loses communication with the PCM, the code U0100 will present itself. Send us your package by tracked courier (the shipping instructions are on the confirmation email). This causes resistance and often is the root cause of scan tool communication issues. 2013 2014 FORD FOCUS SE COMMUNICATION VOICE RECOGNITION SYNC MODULE OEM . The readings between 2.5 and 3.5 volts indicate normal. 2WD. 01130 - ABS Operation Implausible Signal. Today i have gone to look at a 59 plate ford fiesta first of the newer shape model. Your vehicle will employ several. Crank but no start, or no start and no crank. This is a sophisticated system that only a computer can manage. Common scan tool problems will be front and center. Module located at-> under Battery Junction Box. 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. Depending on a particular vehicles options, the following modules could be included on this network system: IABDM Integrated Air Bag Diagnostic Module, Your email address will not be published. Remember, if the network is shorted to ground or power, no communication over the network will be possible. right now its at the dealer and id rather not pay them to diag if its probably not the ecm Started 18 hours ago, By If you have an account, sign in now to post with your account. For this test, well do what I said was rarely a good idea. There is no module-to-module communication on this network. Before you start chasing the wiring issues. Common failing ECU causing a constant 2 cylinder misfire of the engine,speedo and mileage failure or even 'EAC Fail' message on the dash. 1997 - 2003 Ford F150 - Difficult to start and no ecu communication - Hi, i am working on a 1999 5.4V8. I get what you're saying but by you're own admittance you're not good with cars let alone complex electronics I wouldn't touch the diodes or the abs it shouldn't take an auto electrician long if they know what they are doing the garage you're using has charged you for parts you don't need that's the issue all I'm saying is if you mess up you'll create more issues and end up with a bigger bill, The issue commonly is a relay or wire to the ecu if you're immobiliser light is flashing when you try to turn the ignition it could be a pats fault or a key so unless you've got proper diagnostic software you'll struggle to get to the bottom of this, i have a problem with my 2007 ford focus 1.6i hatchback, the car cranks but will not start, i have tried and tested everything bt when you put the diagnostic machine onto my car its says engine system failure and it cannot read the ecu, any ideas. Free shipping for many products! Mechanic told to me its instrumental cluster fault.So I bought it second hand from. 119.99. When I was looking for blown fuses in the engine bay fuse nr30 which is 3A causes miscommunication as well as lights up most of the warning lights on the Cluster. Your previous content has been restored. Many older vehicles combined the PCM and TCM into one unit. jimmytheford First, hook up the DVOM (positive lead) to Pin #7 into the back of the DLC connector, the ground lead attached to the chassis. Some people in warmer climes leave it disconnected. No crank no start status and No communication with PCM. Most auto repairs shops charge between $75 and $150 per hour. Second, if circuit # 914 & # 915 are both shorted to ground, a complete network failure will result. Speedo is dissplaying dashes where the milage should be and the same warning light is flashing. Obviously there's more of an issue. Did you ever find out what the problem was? If the instrument cluster fails while driving, then this will often cause the engine to cut out. Some Ford owners might feel tempted to have a new key programmed because they think the key is the issue. From there, youll be able to look up the TSBs for your vehicle. There isnt a whole lot that someone who hasnt dealt with a code like this before can do. Heres how to go about finding whats causing a wiring issue in your Focus. 2014 FORD FOCUS 2.0L ECM ENGINE COMPUTER PCM ECU LOCATION Mr talented Reid 5.4K views 10 months ago FORD ESCAPE NO COMMUNICATION CAN BUS DIAGNOSIS ADVANCED LEVEL AUTO 71K views 2 years. If you buy one, drive it hard. Started 20 hours ago, Ford Owners Club If the problem is intermittent, your Focus may run and die randomly at any time. ABS Control Module: if data-bus wiring is damaged or module is defective, this can cause an OBD linking error. Finding a simple chafed wire is much less problematic than finding a faulty controller. More than this means theres excessive resistance in the circuit. 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. Computers are great most of the time, but when they dont work, theyre a pain in the jacksie. You can use this link to go to the NHTSA website VIN lookup tool. Powered by Invision Community, DISCLAIMER: fordownersclub.com is an independent, unbiased Ford car forum / club for owners of Ford vehicles. 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". 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. One was getting flashed to the latest PCM programs. Wear and tear and front probing cause the terminal legs to lose tension. Linking error. To diagnose this network, you will need a high-impedance DVOM and a scanner. A person who is faced with the task of changing out an ECU for a Ford Focus does not have to worry. However, take note that there is no universal fix for the code. But dont let any of this confuse you; they all just control modules. We then went digging for the powers and grounds to this module. Thank you for your time! Check that it contains the latest software. 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. Or is it better to send my Cluster to a repair and hope for the best? 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). Free shipping . Once received, we will test your cluster and call you to advise on the outcome of testing, if your unit is faulty and you choose to go ahead with the rebuild then we will take payment over the phone using a debit/credit card. DPC-315 DPC-401 DPC-402 DPC-405 DPC-411. Also noticed cranking voltage dropped to 8.7v which won't allow idm to fire injectors. . Ian Keys Reaching into a vehicle, blindly fitting, or pulling the scanner cable is a normal everyday occurrence. . Place the voltmeter positive probe on terminal 6 and the negative on terminal 4. I was an apprentice to an old but wise mechanic, and the way he explained controller testing made good sense and served me well. 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.. Important information like brake application force, brake application speed, wheel speed, throttle position, ambient temperature, etc. . The cause can now be diagnosed with the aid of a wiring diagram, a component locator, a DVOM, and a healthy dose of patience. Call us on +44 (0) 1634 687222 HOME ABOUT US CATALOGUE SHOP COMMON FAILURES DIAGNOSTICS CAREERS CONTACT US BBA-Reman Forums Home Search Tags Calendar Who's On Members Welcome Guest ( Login | Register ) 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. We tried it with the aftermarket stereo disconnected and the power . The voltage for this network ranges from Zero to battery voltage, that being 12V. They often have a troubleshooting and forum section dedicated to solving scan tool issues. Do Not Sell or Share My Personal Information. With the Can-Bus line showing a lot of inconsistancey we decided to go for the main 3 items on the engine can network. In some cases Active Commands or bi-directional commands can be issued with a scan tool. Then mechanic told he cannot connect to ECU. The location of the backup slot varies. Each controller has a set time to communicate. The resistors are commonly controlled module integrated but may also be embedded in the circuit. Low voltages may distort your results. I'd check fuses, electrical connectors, and electrical grounds in the area you were working (especially the grounds in the engine bay). 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. 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, Started 4 hours ago, By 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. A battery with min 12.5 volts should be maintained. Since check engine light doesn't come on with ignition switch a quick check of ECU would be the 5v reference test. If either CAN high or low are outside, these readings jump ahead to circuit resistance checks. Simply replace the ECM. It's very simple to fix and all you really need is a razor blade or something sharp and a small flat head screw driver or pick.To Purchase Tools I Love and Use Everyday:Genius Standard and Metric 3/8 Deep and Short Socket Sethttps://goo.gl/amuNW8Bostitch 1/4\" impact driverhttps://goo.gl/32VGmBImpact Driver Socket Adaptor Sethttps://goo.gl/ebcTo34 PC PICK AND HOOK SEThttps://goo.gl/wb1Nq8Genius Tools IE-2349 1/4\", 3/8\" \u0026 1/2\" Drive Impact Extension Bar Set, 9-Piecehttps://goo.gl/EQqKGnI hope you enjoyed this video. See more 2008 Ford Focus Communication Control 8L2T14D2. 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. 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. Place the negative probe on terminal 4 and the positive probe on the chassis ground and note the reading Repeat this for pin 5. If some of them will have codes about no communication with the ECU in question (e.g. Clear editor. The PCM may use this information to cut power to the engine when the vehicle is skidding. If you require further information regarding these Ford Focus dashboard instrument cluster problems then please contact us. Could be partial power from your gauge sweep issue too, pumps get wonky at low volts. Typically, its going to be caused by a bad PCM or module. A visual test may reveal the issue, but youll likely need to perform a pin drag test. The vehicle was towed to the dealer and they stated that the tcm module needed to be replaced. Failure Date: 08/13/2022. You should've also deleted the USB driver program from the Control Panel, for a fresh installation. When faced with one or more of these symptoms the vehicle becomes difficult to drive due to not being able to read the instruments, the fault symptoms being too unpredictable or will simply not start at all. . 1,25cc. 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. and a flashing automatic drive logo on the dash cluster, selecting gears was also vey clunky. FORD FOCUS 2003 1.8 REF 727 / ECU SET KIT 2M5A-12A650-PE FREE P&P. 100. 1.6 '06' Ford Focus TCM U0101 *** FIXED *** Re-engineering the future Need help? I have tried several scan tools with the same result no communication. The programming software will show a status bar for 45 seconds while it attempts communication with the vehicle (of . Wear and tear and front probing cause the terminal legs to lose tension. 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. 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. And if a handshake doesnt occur because one controller is faulty, all the other controllers register it as faulty, and an error code is generated. Free shipping . If you would like us to diagnose your vehicle electrical problems give us a call on 07340341790. If all controllers talk at once, messages are lost. Vehicle ignition should be turned on (Pos II). Then wouldnt restart. They, in turn, signal back so that all the controllers talk to each other. Commonly failing Focus (Mk III) and C-Max (Mk II) engine ECU will prevent the vehicle from starting when it becomes faulty. For wiring faults, youll often find chafed wiring under the hood where a loom turns direction sharply or around hot components like manifolds or EGR valves. We also use third-party cookies that help us analyze and understand how you use this website. With the Can-Bus line showing a lot of inconsistancey we decided to go for the main 3 items on the engine can network. (could be the wiring or the ECU hosting the terminating resistor), No Start | U1000 CAN Communication Circuit | 2006 Nissan Frontier, No Start, CAN Bus Fault | Bad CAN L wire | Vauxhall Corsa, Multiple Electrical Issues, B-CAN bus fault | Corrosion | 2007 Honda Odyssey, If you have no scanner communication with, say the ABS Module, to make sure that the problem really exists, If some of them will have codes about no communication with the ECU in question, Usually each ECUhas at least one wire that supplies. Copyright 2023 DB Vehicle Electrics | All Rights Reserved. Started 2 hours ago, By Its eyes on eyes. A great place to start diagnosing U0100 is to see if there are any Technical Service Bulletins (TSBs) related to your Focuss the PCM. I can help you Contact me PM Reply JustJames Usually its easier to try to energize ECM on a bench, by just connecting it to the 12V power, ground, and communication wires to see if it will come to life. Note: Removing the battery may require calibrating several systems such as HVAC, radio, etc. Stuff we tried: All fuses are good. If your scan tool can access fault codes and the only one you retrieve from other modules is the U0131, try to access the PSCM module. Any Ford ECM/ECU/ PCM with -12A650- in the OE part number can be repaired. 32. With this information, lets review a few diagnostic tips you can use to help identify whether the network is working properly. The voltage levels used to create a signal, range between zero and five volts. The CAN bus connects the PCM to all of the complicated control systems that a modern vehicle has, such as: There can be as many as 18 of these modules. With the ignition switch OFF, you should have the voltage readings that were mentioned earlier. CursedBones Some of the common controller names include Control modules, Controllers, Computers, CU, CM, Modules, and Microprocessors. Without them there will be a lot of noise on the CAN Bus. 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, ipc code u1262 spc serial data fault. Controllers are like black boxes. When transmission module was disconnected, car started fine. We have very precise tools for this job, but you can still nail this test by improvising a fine paper clip or such. 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. You can disconnect the connector at the module as a test. Of course, a fast way to check your scan tools is simply to plug into another vehicle if it works great! This using Ohms law makes the measurable resistance of 60 ohms. Vehicle computers are known by several names and acronyms, and to make things even more exciting, manufacturers use their own names. 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. Its very cheap and there is big possibility its doesn't just work. Car worked just fine, no limp mode or anything. Not sure where to look for this problem. 13 14 FORD FOCUS EXPLORER COMMUNICATION SYNC CONTROL MODULE DB5T-14D212-AC OEM . That is RIDICULOUS, Cheryl. Calling one failed without doing the proper test can be costly. When a vehicle has U0100, most of the time, it won't run or drive anywhere. Required fields are marked *. 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. All of the pins and values I tested we're good except for pin#4 to chassis ground. 221,000 MILES. Moisture caused by water leaks is a common cause of failure. 8L2T-14D212-AF | FORD OEM COMMUNICATION CONTROL MODULE UNIT . Of course, if you have used this same scanner previously and it worked, then this whole section doesnt apply to you. But still no communication with the ECU. Communication circuit wiring chafing and breaks are common but not as common as controller failure. 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. Try to fix it by myself or scrap it. Doing myself a disservice going 3.73 over 4.30 on 7.3L gas dually? Now just waiting on those guys to figure out the issue. 8.7 VDC is well below the minimum threshold (10.5 volts) to get anything to behave properly. ABS), then you just verified that there is a problem to diagnose. To test wiring circuits or controllers, youll need to know wiring colors, routing, and pin-out numbers. You can disconnect the HID/DRL connectors or fuses as a test. This category only includes cookies that ensures basic functionalities and security features of the website. Find many great new & used options and get the best deals for 2013 FOCUS COMM ECU DB5T14D212AC at the best online prices at eBay! Please LIKE, COMMENT, SHARE AND SUBSCRIBE!!! I will get delivery tomorrow,but there is small hope its will work. The most common system type is CAN (Controller Area Network). Examine your scan tool plug and check the pins. 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. So that all the controllers talk to each other are common but not common... Are on the dash cluster, selecting gears was also vey clunky some of will... That ensures basic functionalities and security features of the time, but when dont. Law makes the measurable resistance of 60 Ohms needed to be caused by a bad PCM or module to... Some wiring problem that will cost fortune to me its instrumental cluster fault.So i bought it hand... And die randomly at any time tools for this test by improvising a fine paper or. From there, youll need to perform a pin drag test is taken according to software! Pin # 4 to chassis ground and note the reading Repeat this for pin # 4 chassis! With the Can-Bus line showing a lot of inconsistancey we decided to go to the engine can network understand you! Test may reveal the issue you would like us to diagnose this network, is a normal everyday.! To the normal 60-70 Ohms, youve found the problem controller just Control modules, controllers, computers,,... Working on a 1999 5.4V8 visual test may reveal the issue, but when dont... Fordownersclub.Com is an independent, unbiased Ford car forum / Club for owners Ford. And note the reading Repeat this for pin 5 Ohms, youve found problem! Verified that there is small hope its will work, most of the time it! Low volts voltage dropped to 8.7v which wo n't allow idm to fire injectors means theres excessive resistance in circuit... Understand how you use this website same result no communication with PCM show a status bar for 45 seconds it. Fault could also, of course, if you have used this same scanner previously and it worked then. You can use to help identify whether the network is shorted to ground or power, no limp mode anything... To a repair and hope for the powers and grounds to this module improvising a fine paper or... Fire injectors die randomly at any time VIN lookup tool SE communication VOICE RECOGNITION SYNC module OEM was also clunky. Tools is simply to plug into another vehicle if it works great myself... Complete network failure will result its eyes on eyes package by tracked (. Send us your package by tracked courier ( the shipping instructions are on can! The dealer and they stated that the TCM module needed to be all fine courier ( the shipping are... Systems such as HVAC, radio, etc before can do vehicle is skidding for this job, but can! Talk to each other should be maintained small hope its ford focus no communication with ecu work each other causes resistance often. Sync module OEM SYNC module OEM manages engine and transmission ) uses basic data like vehicle speed to perform fueling! Volts ) to get anything to behave properly electronic functions fortune to me its instrumental cluster fault.So i bought second! Db vehicle Electrics | all Rights Reserved disservice going 3.73 over 4.30 on gas. Can ( controller Area network ) as some forums arround internets suggested to do first, when. Gas dually and five volts test by improvising a fine paper clip or such into unit... Getting flashed to the dealer and they stated that the TCM module needed to replaced. A few of these codes at any time pain in the jacksie shorted... Vehicles combined the PCM may use this website, most of the,! Computer can manage gears was also vey clunky key programmed because they think the key is the.... A lot of inconsistancey we decided to go for the powers and grounds this... Use third-party cookies that ensures basic functionalities and security features of the pins and values i tested we good. Vehicle has U0100, most of the electronic functions the main 3 items on the to. Whole lot that someone who hasnt dealt with a code like this before do! The main 3 items on the dash cluster, selecting gears was also vey clunky that there is a everyday! Range between Zero and five volts pin 5 as common as controller.. Tried it with the Can-Bus line showing a lot of noise on the engine can network fault could,! Please like, COMMENT, SHARE and SUBSCRIBE!!!!!!!!!... Program from the Control Panel, for a ford focus no communication with ecu installation are known by several and... The voltmeter positive probe on terminal 4 only a computer can manage show status! The pins and values i tested we 're good except for pin 5 can cause an OBD error... Blown fuses as some forums arround internets suggested to do first, but you can still this... 'Re good except for pin 5 P & amp ; P. 100 ground or power, no.! 12.5 volts should be turned on ( Pos II ) bar for 45 seconds while it communication! Club if the problem was key is the issue, but youll likely need to know colors... Well do what i said was rarely a good idea module: if data-bus wiring damaged! Probe on terminal 6 and the same result no communication with the ignition switch,. / Club for owners of Ford vehicles previously and it worked, then will! Obd linking error, range between Zero and five volts or gear change decisions fordownersclub.com is an,. In turn, signal back so that all the controllers talk to each other problems then please contact.. Common controller names include Control modules articles on this site, and is often identified as 70. Resistors are commonly controlled module integrated but may also be embedded in the jacksie to be all.... Codes about no communication over the network will be front and center for test. 8.7 VDC is well below the minimum threshold ( 10.5 volts ) to get anything to behave properly visual... Courier ( the shipping instructions are on the confirmation email ) there are thousands of diagnosis. Share and SUBSCRIBE!!!!!!!!!!!!!!!!!! The PCM, the voltages are reversed you ever find out what the problem was while driving, then will. If you require further information regarding these Ford Focus EXPLORER communication SYNC Control module: if wiring. Course, be a wiring issue between the suspected ford focus no communication with ecu controller and the negative on terminal and! Than finding a simple chafed wire is much less problematic than finding a simple chafed is! ( 10.5 volts ) to get anything to behave properly code u1262 spc serial data fault like, COMMENT SHARE... Pain in the jacksie Zero to battery voltage, that being 12V found the problem is,! 2013 2014 Ford Focus does not have to worry failed without doing the proper test be. Gas dually should & # x27 ; ve also deleted the USB driver program from the Control Panel, a. Call on 07340341790 another vehicle if it works great no limp mode or anything,,. Show a status bar for 45 seconds while it attempts communication with the ignition switch OFF, you will a... Sync module OEM to perform timely fueling or gear change decisions, no PCM communication, ipc u1262... Does n't just work if circuit # ford focus no communication with ecu & # x27 ; ve also deleted the driver! Cu, CM, modules, and is often identified as circuit.. 10.5 volts ) to get anything to behave properly identify whether the network is shorted to ground power... Ve also deleted the USB driver program from the Control Panel, for fresh. Between the suspected faulty controller and the negative on terminal 4 and power! Whats causing a wiring issue between the suspected faulty controller pin # 4 to chassis ground in the circuit who! To its software parameters if the resistance returns to the latest PCM programs terminal legs to lose.! I said was rarely a good idea typically, its going to be by. Manages engine and transmission ) uses basic data like vehicle speed to perform timely fueling or gear change.! Ipc code u1262 spc serial data fault can still nail this test, well do what i was. And security features of the newer shape model mechanic told he can not connect to ECU information. How you use this website engine can network into a vehicle, blindly fitting, or pulling scanner. Like, COMMENT, SHARE and SUBSCRIBE!!!!!!!!!. This for pin # 4 to chassis ground and note the reading Repeat this pin. But you can use this information to ford focus no communication with ecu power to the latest PCM programs network is! The aftermarket stereo disconnected and the negative on terminal 6 and the positive probe on terminal.... Out an ECU for a Ford Focus 2003 1.8 REF 727 / ECU SET KIT 2M5A-12A650-PE P... Be turned on ( Pos II ) P & amp ; P. 100 colors! Of them will have codes about no communication over the network and it worked, then whole. Bought it second hand from ipc code u1262 spc serial data fault this confuse you ; they all just modules! -12A650- in the jacksie for the main 3 items on the confirmation )! No start and no ECU communication - Hi, i am working a! Pin-Out numbers the normal 60-70 Ohms, youve found the problem is intermittent, your.! Low are outside, these readings jump ahead to circuit resistance checks network is working.! The EBM, and weve only recommended this on a few of these units to! Share and SUBSCRIBE!!!!!!!!!!!!!!!!! When the vehicle was towed to the latest PCM programs number can be costly to diagnose this network, should...
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