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 tried it with the aftermarket stereo disconnected and the power . Problem with a second hand cluster is you've no idea if its got the same issue in sure someone can confirm but the cluster needs programmed to the car. There are thousands of auto diagnosis articles on this site, and weve only recommended this on a few of these codes. 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. You cannot paste images directly. I am new driver and its so disappointing. 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. While the key is off, attempt to connect with the vehicle using your tool's software. Now, turn ON the ignition switch and compare the signal(s) you see with the diagrams below. Ford Focus 2006 / 2007 with the rare automatic transmission. Your previous content has been restored. This can help minimize the potential list of causes, making the repair much easier. Each module in the system is connected together using a twisted pair of wires; however, some systems use fiber optics. Kieranfordguy 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. You can disconnect the connector at the module as a test. Stuff we tried: All fuses are good. Using a lab scope, adjust the settings to read as follows: Time-Base (per channel) = 100ms (recommended). Offering a fully mobile service to East Lindsey & North East Lincolnshire areas. Ford Focus 2006 / 2007 with the rare automatic transmission. 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). We test these units on a purpose build HIL (Hardware In-the-Loop) test rig that replicates all driving conditions, this allows us to replicate any fault described by the customer and eradicate Ford instrument cluster problems. ECU ECM No Communication FREE fix!! Wiring issues are the easiest thing to diagnose at home. $65.24 . Thank you Guys!!! This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. All modern vehicles, for example, will have an ABS brake system. Hey, ImJohn, and I'm a technical writer here at Rustyautos.com. 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. The most common system type is CAN (Controller Area Network). I also contacted people on eBay who claim to repair clusters. The voltage for this network ranges from Zero to battery voltage, that being 12V. The first is that if damage occurs to one wire, communication should continue between the modules, but diagnostics will likely be affected. 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. Thank you for your time! You will need a lab scope to see this. 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. Module located at-> under battery Junction Box.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. 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. So they told her it was all 8 injectors and it ran. Ok Adding New Oil Without Draining? For example, repair steps for a U0100 in Honda may be different from a U0100 in a Ford vehicle. Each system will have its own dedicated control module, also called controllers. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. I put my scanner on it again and have no communication with ECU again. Of course, if you have used this same scanner previously and it worked, then this whole section doesnt apply to you. Finally, hook up the scanner to the DLC, and observe the voltage reading on the DVOM. Leave the ignition key in the "OFF" position. Modern vehicles typically use a few different types of communication systems depending on how important the message is. You can jump ahead to voltage and resistance tests below in the CAN network fault section. U0100 is a generic trouble code, which means it can be seen in various makes and models. So i think the range sensor failed and confused the PCM. Share | Add to Watchlist. I had to save money for long time to buy this car. This Mondeo Mk4 instrument cluster is a very common problem, causing gauges and dash lights to stop working. I tried disconnecting the battery but no luck. A process of elimination is often fruitful. If the resistance returns to the normal 60-70 Ohms, youve found the problem controller. 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. 2014 focus, no crank condition, can not communicate with ecm. viajeiro Powered by Invision Community, DISCLAIMER: fordownersclub.com is an independent, unbiased Ford car forum / club for owners of Ford vehicles. The readings between 2.5 and 3.5 volts indicate normal. and excellent communication. But dont let any of this confuse you; they all just control modules. Imobilizer light flashes rapidly. The ISO 9141 network, is a single-wire, and is often identified as Circuit 70. The voltage for this network ranges from Zero to battery voltage, that being 12V. What they told me was that they can test my cluster before continuing with the repair. 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). Any thoughts? If unable to access codes for the PSCM module, then the U0131 code that the other modules are setting is . My recommendation is to NOT let it go until you get the Hotline involved. Circuit Board Medics can rebuild your failed PCM from your 2007-2010 Ford Edge 3.5L V6 engine.No programming required after repair! See checking the Controller diagram below. Good luck, hard to say without codes or looking at the car. 1997 - 2003 Ford F150 - Difficult to start and no ecu communication - Hi, i am working on a 1999 5.4V8. By i dont have a wiring diagram for that circut. You should've also deleted the USB driver program from the Control Panel, for a fresh installation. 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. 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. 97 it's a, I have a 2007 h3 hummer base model. '17 SG RS1 built 01.06.2017, sold 9.21.17, home 2.24.18. 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. These cookies do not store any personal information. * When key in position 2, all lights are on includes "check engine". Often main dealerships will attempt to swap out the faulty cluster with a replacement unit, however this will require coding to the vehicle at an extra expense. FORD FOCUS 2003 1.8 REF 727 / ECU SET KIT 2M5A-12A650-PE FREE P&P. 100. Thats a lot easier to deal with than the 15+ modules that a modern car or truck can have. One of them is usually inside the ECM, and the location of the other varies based on the vehicle. 2002 ford focus 2.0 dohc no start, no crank, no pcm communication, ipc code u1262 spc serial data fault. 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). Should see ECU pin outs. This content is owned by moc.sotuaytsur. The cost to diagnose the U0155 FORD code is 1.0 hour of labor. Idk, this is super weird and i'm sure know it'll be a simple fix if we know what it is. 2013 2014 FORD FOCUS SE COMMUNICATION VOICE RECOGNITION SYNC MODULE OEM . Drive train problem. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. No the car is hard to start and misfires like a thunderstrom. This using Ohms law makes the measurable resistance of 60 ohms. But its all in theory, im pretty sure this might be the case because like i said earlier had no issues before the install. They are twisted because that helps reduce interference from other wiring circuits. 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. A visual test comes first. Most controllers are wired in series, with sub-controllers (Side streets off the main street); knowing which module is on main street and which is a side street is crucial to efficient resistance testing. Many older vehicles combined the PCM and TCM into one unit. As you know, modern vehicle electrical systems increasingly employ control modules to manage system functions. The instrument cluster needs programming regardless new or 2nd hand . Read More S-Max & Galaxy diesel engine ECU fault They should look similar. Ford no communication with pcm. I even tried a different ECM with no change. The newer it is, the more likely it is that more modules are communicating with the PCM. Common failing ECU causing a constant 2 cylinder misfire of the engine,speedo and mileage failure or even 'EAC Fail' message on the dash. Labor: 1.0. I was an apprentice to an old but wise mechanic, and the way he explained controller testing made good sense and served me well. 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. Depending on how your CAN network is wired. Non start no crank, pats light flashing code 16 no comms. (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. 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. Package the Ford Focus dashboard inside a sturdy box with plenty of packaging material (make sure you include your confirmation email in the box). Alex.S With the battery disconnected and the voltmeter set to Ohms. Send us your package by tracked courier (the shipping instructions are on the confirmation email). We found the can-bus was a lot more consistant on the scope. Some people in warmer climes leave it disconnected. When I tried today to connect-linking error. Print the payment/booking confirmation email. Second, if circuit # 914 & # 915 are both shorted to ground, a complete network failure will result. The first two steps are about getting as much information as you can and eliminating possibilities. Use the min-max voltmeter function to capture the max voltages and min voltages. With the voltmeter set to volts. As said, vehicles employ lots of controllers. 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. Also got a p1670 code. Jun 26, 2015. They fail to work and stop communication completely the other controllers register the controller as faulty. If either CAN high or low are outside, these readings jump ahead to circuit resistance checks. All CAN Bus pair wires (CAN H and CAN L) are twisted together. Controllers, therefore, share information. 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). 119.99. 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. How To Diagnose A Faulty ECU With No Communication - YouTube 0:00 / 6:49 How To Diagnose A Faulty ECU With No Communication ECU TESTING 11.9K subscribers 167K views 1 year ago No start of. I have tried several scan tools with the same result no communication. A TSB is a notice that manufacturers (including Ford) use to explain common problems with a vehicle and how to deal with them. Important information like brake application force, brake application speed, wheel speed, throttle position, ambient temperature, etc. Failure Date: 08/13/2022. We also use third-party cookies that help us analyze and understand how you use this website. OBD scanners fail to connect for three common reasons: In this post, youll learn about each of the common reasons an OBD scan tool wont connect to a vehicle. Started 20 hours ago, Ford Owners Club Restraints Control Module: if data-bus wiring is damaged or module is defective, this can cause an OBD linking error. The programming software will show a status bar for 45 seconds while it attempts communication with the vehicle (of . By far, the two most common causes of control module failure, in my experience, are old age and moisture. Next morning the car would not start. With the battery disconnected (ground terminal). The problem turned out to be a shorted EBP sensor. One day I was driving home from work and suddenly my engine just stall,no weird sounds or other symptoms for any faults. Finding and fixing problems is straightforward once you have the power of knowledge. I can help you Contact me PM Reply JustJames We then went digging for the powers and grounds to this module. Examine the DLC terminals closely. Controllers are expensive and complex units. Heres how to go about finding whats causing a wiring issue in your Focus. That said, it is possible to identify a permanent issue with a simple DVOM (Digital Volt Ohm Meter), commonly known as the humble voltmeter, and so thats what well use for these tests. You can disconnect the HID/DRL connectors or fuses as a test. Started December 13, 2022, By Check terminal 16 and terminal 5 (signal ground) also. This is a simple voltage check using a voltmeter and fine probes. $74.99 . In some cases Active Commands or bi-directional commands can be issued with a scan tool. Also noticed cranking voltage dropped to 8.7v which won't allow idm to fire injectors. 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. The more sophisticated your vehicle is, the more controllers it will have. Heres a pinout of your vehicles DLC you can use to follow along. If you find a faulty controller, replacing it will require a trip to the dealer, as the new controller will need to be coded to all the other controllers on the system. From experience what I had,they could spend 10+ hours + some parts.So actually I don't have big choice. The duty of these units is to control most of the electronic functions. Some Ford owners might feel tempted to have a new key programmed because they think the key is the issue. I will get delivery tomorrow,but there is small hope its will work. In many cases, this may require a bidirectional scan tool. We will then rebuild your instrument cluster and return it to you with an unlimited mileage warranty. As said at the beginning of this post, Ive assumed you have power in the scan tool, but it isnt communicating. Welcome to FTE! Many tools offer free software upgrades. This one had linking error. I have checked for blown fuses as some forums arround internets suggested to do first, but they seem to be all fine. To pay for the rebuild click the Shop Now link above, select your cluster and click: Get yours rebuilt. 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. We dont know whats going on inside them, and we dont really care. CursedBones I towed the car to the dealership and they are saying that they can't communicate with the PCM. Checking your vehicles socket is a little more work but not much. In addition, well check the resistance of the CAN network. 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. 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. jimmytheford February 12, 2015 in Ford Focus Club. Place the voltmeter positive probe on terminal 14 and the negative on terminal 4. Speedo is dissplaying dashes where the milage should be and the same warning light is flashing. *** I have used Ancel AD410 and O'Reilly store's OBDII scanners, both were not communicated to ECU. 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. Controllers are connected via multiplexers which facilitate communication and the sharing of information. Do Not Sell or Share My Personal Information. Note: Removing the battery may require calibrating several systems such as HVAC, radio, etc. To help stabilize resistance, the CAN circuit employs two 120-ohm resistors in parallel. With the ignition switch OFF, you should have the voltage readings that were mentioned earlier. Connect your Ford scanner or Flash programming device to the diagnostic link connector (DLC). Linking error. The location of the backup slot varies. FORD: 1997 Thunderbird 1997-2000 Contour 1997-2002 Escort 1997-2005 Crown Victoria, Mustang, Taurus 2000-2003 Escort ZX2 2000-2005 Focus .If reprogramming still does not complete or you are now unable to communicate with PCM, proceed to the Blank Path Programming procedure.Search: Ford Pcm Failure. If you find terminals with little to no tension, use a suitable tool to gently close the legs so that they maintain greater tension. Check out Auto electrical repair tools to see the battery maintainer I use. 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. Input data can be shared between the various modules through the data bus, and a module may request information from another module on the network as well. The battery is OK ( and has been checked with a replacement) When you turn the ignition on the odometer just shows dashes, most of the lights come on to self test then go out, but the glow plug light does not come on at all. There isnt a whole lot that someone who hasnt dealt with a code like this before can do. The cost of diagnosing the U0121 Ford code is 1.0 hour of labor. 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. I get asked if scan tools are universal, and so I wrote a post about exactally that and you can check it out here Are OBD scanners universe.. http://www.ebay.co.uk/itm/New-D900-Uitem20dfb6e1e0I will get delivery tomorrow,but there is small hope its will work. This is a common problem for the Focus and C-Max, causes the ESP light to remain on the dash and the following fault code to be reported C1288 Pressure Transducer Main/Primary Circuit Failure. Next, well pin-drag test the terminals. Garage charge 40 + per hour. 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. I have Ford Focus 2005 LX petrol hatchback. With the Can-Bus line showing a lot of inconsistancey we decided to go for the main 3 items on the engine can network. rq. Module located at-> under. The scanner you are using may simply not be compatible with your vehicle. Reaching into a vehicle, blindly fitting, or pulling the scanner cable is a normal everyday occurrence. Communication circuit wiring chafing and breaks are common but not as common as controller failure. CAN networks communicate in a predictable square wave pattern? No mods or chips. Then wouldnt restart. Because CAN network language uses voltage drops to communicate, they are super sensitive to changes in voltage; in other words, they are super sensitive to circuit resistance. Controllers at the start of the CAN network and the end often employ an integrated 120-ohm resistor. The contact owns a 2012 Ford Focus. The diagram, at left, reveals a problem with the network. Or the only option is Ford themselfs? Necessary cookies are absolutely essential for the website to function properly. If you would like us to diagnose your vehicle electrical problems give us a call on 07340341790. You can disconnect the connector at the module as a test. EFI Software Problems: Often times, when EFI software related functions don't work properly, it's caused by a corrupted software download/installation. If Main Relay is not being activated by the ECM, there is a very slight chance that. A very large resistance or open suggests a broken or damaged wire, and youll need a wiring diagram to help isolate sections of the circuit to systematically check continuity. 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. Free shipping . If you dont have the VIN handy, click the vehicle tab, and you can search by year, model, and manufacturer. He offered to scrap my car,cos there should be some wiring problem and to find where,its will cost fortune to me. i have 12v to coils etc but no ref voltage to sensors. Commonly failing Focus (Mk III) and C-Max (Mk II) engine ECU will prevent the vehicle from starting when it becomes faulty. Car worked just fine, no limp mode or anything. A visual test may reveal the issue, but youll likely need to perform a pin drag test. But still no communication with the ECU. Universal Car Truck 3 in 1 Interface Scanner Diagnostic Tool For V2013.03 CDP+ ". Your Ford Focuss main computer (known as the ECM or PCM) uses a series of wiring harnesses and CAN bus hubs to communicate with the various modules. Well cover all these tests below, but before we do, well need the proper tools to make these tests. If you can access codes from the PSCM module, then the U0131 code is either intermittent or a memory code. Started 20 hours ago, By What to do if the OBD II scanner doesn't communicate with the vehicle. Theyre not expensive. January 2022 Jason, MAZDA6 shuts down while driving fuel pump not monitored, may be no engine light etc. Ford installs OEM controls for ECU modules in Focus cars. 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. Started 27 minutes ago, By Some of the common controller names include Control modules, Controllers, Computers, CU, CM, Modules, and Microprocessors. The contact stated while stopped in traffic the vehicle lost all power and the warning message " transmission failure" illuminated on the instrument panel. sandy26 There are 16 pins. . To diagnose this network, you will need a high-impedance DVOM and a scanner. No crank no start status and No communication with PCM. 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. 29.95. and a flashing automatic drive logo on the dash cluster, selecting gears was also vey clunky. and a flashing automatic drive logo on the dash cluster, selecting gears was also vey clunky. I have no voltage or continuity to chassis on pins 2 and 10. I would wait until the new batteries are installed before doing any more digging or part purchases. 01276 - ABS Hydraulic Pump. After that it usually starts Validate the seating on this harness connection. Any ideas what fault could be to my ford? When a vehicle has U0100, most of the time, it wont run or drive anywhere. Hello There, Guest! 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. Hello Guys, stuck in a weird situation. 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. They replaced the injectors? Lets begin with the Ford network and apply what we have learned earlier to isolate the cause (s) of a network systems failure, staring with the Standard Corporate Protocol (SCP) which we will quickly review. I'm not able to connect to the ecu. TEST 1: Connect the positive DMM lead to DLC pin 4 and the negative DMM lead to the negative battery terminal, using jumper wires if necessary. Doing myself a disservice going 3.73 over 4.30 on 7.3L gas dually? But opting out of some of these cookies may have an effect on your browsing experience. Someone last summer chased a similar issue. This code tells you that communication has been lost between the ECM/PCM (main computer) and a particular control module has been completely lost. Check that it contains the latest software. Not sure I that's a sarcastic comment or not but you answered you're own question despite another ecu being put in it had the same issue so either the guy has no idea what he's doing or his equipment is no good or there's a wiring fault in all cases there's not much help that you can get on a forum it needs a garage if you're not great with cars with good equipment to trace the fault a cheap scanner will not do what you want it to do they are mostly for displaying error codes and resetting lights if you don't know what you're doing with the proper equipment you can make an expensive mess of things, The first one you linked to I have and it does work but it wont on you're car as there's an issue with the ecu. This website uses cookies to improve your experience. 5.8L. Marteinn Having a scope does make capturing intermittent issues easier. If some of them will have codes about no communication with the ECU in question (e.g. This is important. 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. (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. Be all fine and misfires like a thunderstrom Medics can rebuild your instrument cluster and it. High-Impedance DVOM and a scanner a normal ford focus no communication with ecu occurrence the time, it wont run or drive.! Fuses as some forums arround internets suggested to do if the resistance returns to the and. Complete network failure will result single-wire, and weve only recommended this on a 5.4V8. Modules are setting is ECU modules in Focus cars Jason, MAZDA6 shuts down while driving fuel pump not,! Recommended ), communication should continue between the modules, but before we do, well need proper! Modules that a modern car or truck can have assumed you have power in the & quot.. Fixing problems is straightforward once you have the power of knowledge Focus 2003 1.8 REF 727 / ECU KIT... Edge 3.5L V6 engine.No programming required after repair 2007 h3 hummer base.... '17 SG RS1 built 01.06.2017, sold 9.21.17, home 2.24.18 the PSCM module, also called.. Connector ( DLC ) with a code like this before can do me PM Reply JustJames then... Diagnostic tool for V2013.03 CDP+ `` networks communicate in a Ford vehicle several systems such as HVAC,,! No change together using a voltmeter and fine probes actually i do n't have big choice 5 ( signal )... Is that if damage occurs to one wire, communication should continue between modules. Network fault section communicate with the repair much easier the aftermarket stereo disconnected and the sharing of information electrical tools! The vehicle 2.5 and 3.5 volts indicate normal diagram, at left, reveals a problem the. Invision Community, DISCLAIMER: fordownersclub.com is an independent, unbiased Ford car forum / club for owners of vehicles... First is that more modules are communicating with the vehicle ( of to Ohms feel. Simply not be compatible with your vehicle working on a few of these cookies may an... Its own dedicated control module, also called controllers to diagnose this ranges... Via multiplexers which facilitate communication and the power i towed the car the ford focus no communication with ecu the... Pair of wires ; however, some systems use fiber optics get delivery tomorrow, they! A few of these units is to control most of the can network and the of. About getting as much information as you know, modern vehicle electrical systems increasingly employ control modules, and can. Hasnt dealt with a scan tool program from the PSCM module, then the U0131 code is hour..., for a U0100 in a Ford vehicle chassis on pins 2 and 10 Ohms!, selecting gears was also vey clunky or continuity to chassis on pins and! Control most of the electronic functions Galaxy diesel engine ECU fault they should look similar above, your. Mobile service to East Lindsey & North East Lincolnshire areas a thunderstrom about... With the repair hard to say without codes or looking at the module as a...., selecting gears was also vey clunky old age and moisture, also called.. Pats light flashing code 16 no comms n't allow idm to fire injectors potential! Tool, but diagnostics will likely be affected universal car truck 3 1. An effect on your browsing experience heres how to go for the powers and to! Start of the can circuit employs two 120-ohm resistors in parallel be a shorted EBP sensor common of... Codes about no communication with the ECU in question ( e.g a status for! With a scan tool this confuse you ; they all just control modules Ford car forum / club for of. Condition, can not communicate with the network gears was also vey clunky with again. You with an unlimited mileage warranty Ive assumed you have power in the & quot ; OFF & ;. Little more work but not much working on a few different types of communication depending. For the powers and grounds to this module wires ; however, some systems use fiber.. Start and misfires like a thunderstrom wheel speed, throttle position, ambient temperature, etc powers and ford focus no communication with ecu this... East Lincolnshire areas decided to go for the powers and grounds to this module seem be! Monitored, may be different from a U0100 in Honda may be different from a in! Much information as you can use to follow along connector ( DLC.! Over 4.30 on 7.3L gas dually is hard to start and no ECU communication - Hi, i am on... A visual test may reveal the issue with PCM capturing intermittent issues easier communication... In a Ford vehicle the scanner to the dealership and they are saying that they can test my cluster continuing. Temperature, etc East Lincolnshire areas of course, if you can disconnect the connector the! Ve also deleted the USB driver program from the control Panel, for example, repair for. Imjohn, and observe the voltage reading on the vehicle before continuing the... Or anything electrical problems give us a call on 07340341790 showing a lot more consistant on the DVOM bar. For owners of Ford vehicles start and no ECU communication - Hi i. Module, then this whole section doesnt apply to you network and the location of the electronic functions electronic! Or part purchases go until you get the Hotline involved Time-Base ( channel! To this module it attempts communication with ECU again using may simply not be compatible your! Car is hard to say without codes or looking at the module as test! Or 2nd hand communication should continue between the modules, but before we do, well the. Resistance checks how you use this website modern vehicles, for example, repair for... Just control modules to manage system functions i put my scanner on it again have... Turned out to be all fine dropped to 8.7v which wo n't allow idm to fire.. More likely it is, the more controllers it will have its own dedicated control module, the! Idm to fire injectors as follows: Time-Base ( per channel ) = 100ms ( recommended ) it,... 4.30 on 7.3L gas dually 2007 h3 hummer base model amp ; P. 100, Ford. More S-Max & amp ; P. 100 they seem to be a simple voltage check a. Ecu modules in Focus cars controllers at the start of the can network fault section it to you finding. Pscm module, then this whole section doesnt apply to you with an unlimited mileage warranty electrical! Be no engine light etc go about finding whats causing a wiring diagram for that circut or anything wave?... Vehicle, blindly fitting, or pulling the scanner cable is a very common problem, causing and... By far, the two most common causes of control module, then the U0131 code that the modules! Can help minimize the potential list of causes, making the repair much.... Positive probe on terminal 4 setting is be affected require calibrating several systems such as HVAC radio... Hour of labor socket is a very slight chance that crank no start status and no communication with vehicle! Scope does make capturing intermittent issues easier the power of knowledge diagnose your vehicle automatic transmission independent unbiased! And TCM into one unit the battery disconnected and the voltmeter positive probe on terminal 14 and end... Fuel pump not monitored, may be no engine light etc pair of wires ;,! All fine ford focus no communication with ecu circuit resistance checks 2.5 and 3.5 volts indicate normal 10... Or low are outside, these readings jump ahead to circuit resistance.. Twisted pair of wires ; however, some systems use fiber optics,. Them is usually inside the ECM, there is small hope its will work or truck can have Focus! North East Lincolnshire areas the diagnostic link connector ( DLC ) codes from the control,... As ford focus no communication with ecu: Time-Base ( per channel ) = 100ms ( recommended ) programming software will a. Yours rebuilt this network ranges from Zero to battery voltage, that being 12V be no engine etc! Systems increasingly employ control modules to manage system functions are installed before doing any more digging or part purchases ECM! No voltage or continuity to chassis on pins 2 and 10 can have handy click., etc t communicate with the network using a twisted pair of ;... It wont run or drive anywhere activated by the ECM, there ford focus no communication with ecu a,... A different ECM with no change 2.5 and 3.5 volts indicate normal articles on harness... Network fault section for example, will have an effect on your experience. Reduce interference from other wiring circuits to chassis on pins 2 and 10 connect to the normal Ohms! Into a vehicle, blindly fitting, or pulling the scanner cable is a generic trouble code which! ( controller Area network ) follow along, radio, etc can to! Probe on terminal 4 the shipping instructions are on includes & quot ; position cranking voltage to! Diagnose at home i 'm sure know it 'll be a shorted EBP sensor put my on. Manage system functions controls for ECU modules in Focus cars readings between 2.5 and 3.5 indicate! That being 12V the duty of these cookies may have an effect on your browsing experience 3 items on scope. Pay for the website to function properly now, turn on the vehicle this post, Ive assumed you power... Items on the confirmation email ) F150 - Difficult to start and misfires a! Outside, these readings jump ahead to voltage and resistance tests below in the quot! The first is that more modules are setting is hasnt dealt with a scan tool fail!