It can be an exceptionally difficult code to diagnose. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. When i tried to start the car right after install, the car wasn't starting, i was displayed "Starting system failed", "Engine on" and a bunch of stuff. Hello Guys, stuck in a weird situation. 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. 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. i dont have a wiring diagram for that circut. Depending on how your CAN network is wired. There are at least two CAN bus locations on a vehicle. With this information, lets review a few diagnostic tips you can use to help identify whether the network is working properly. Investigate constant misting up windows, damp carpets, water sloshing noises, musty smell, and sweet smell; keep your window cowl drains, and firewall drains clear, check those sunroof drains and take care of water leaks immediately; they can do a surprising amount of damage. Hey, ImJohn, and I'm a technical writer here at Rustyautos.com. Started 20 hours ago, Ford Owners Club Low voltages may distort your results. This code tells you that communication has been lost between the ECM/PCM (main computer) and a particular control module has been completely lost. . Required fields are marked *. Good luck, hard to say without codes or looking at the car. If some of them will have codes about no communication with the ECU in question (e.g. Using a good heat shrink insulator and solder will repair the wiring to NASA standards. Package the Ford Focus dashboard inside a sturdy box with plenty of packaging material (make sure you include your confirmation email in the box). In my last article, I outlined the basics behind getting valuable diagnostic information from the Diagnostic Line Connector (DLC), and how to troubleshoot potential problems with the communications network. If the instrument cluster fails while driving, then this will often cause the engine to cut out. That will damage them. Send us your package by tracked courier (the shipping instructions are on the confirmation email). Very often, finding the troublesome noisy controller and simply unplugging it allows the scan tool to communicate and the vehicle to run. One of them is usually inside the ECM, and the location of the other varies based on the vehicle. 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. The material or media contained in these forums are submitted by the general public and is NOT endorsed by Ford or Ford Motor Company in any way. We found the can-bus was a lot more consistant on the scope. Being that the vehicle can run and die at any time, even if it starts back up after getting this code, we recommend having a mechanic look at it before driving it again. Your vehicles dedicated brake system controller, commonly called an EBM (Electronic brake module), gathers data from various sensors on your car. Finding and fixing problems is straightforward once you have the power of knowledge. The ECU was used in Ford Mondeo, Galaxy, Focus and Ka - 1.8/2.0/2.5/3.0. 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. You can disconnect the connector at the module as a test. The instrument cluster needs programming regardless new or 2nd hand . You can disconnect the HID/DRL connectors or fuses as a test. Now, I want to let you in on a few handy diagnostic tips that many will find helpful. 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. We dont know whats going on inside them, and we dont really care. If you buy one, drive it hard. Any Ford ECM/ECU/ PCM with -12A650- in the OE part number can be repaired. Next, well pin-drag test the terminals. This, of course, is only possible if you have a good working wiring diagram. Started 20 hours ago, By As said, vehicles employ lots of controllers. Note: not every DLC slot will contain a terminal. Check if the ECM energizes Main Relay be grounding it, when all the other power supplies are on. I'd check fuses, electrical connectors, and electrical grounds in the area you were working (especially the grounds in the engine bay). You can disconnect the connector at the module as a test. Print the payment/booking confirmation email. We then went digging for the powers and grounds to this module. If, on the other hand, resistance is lower or higher than expected but not open, then a faulty controller is a likely suspect. Common scan tool problems will be front and center. Check out Auto electrical repair tools to see the battery maintainer I use. I haven't done that because its not in the instructions from Autostyled shifter. (Two different names for the same thing). This code means that the Transmission Control Module (TCM) and other control modules on the vehicle are not talking to each other. Bus + circuit # 914.and is found on Pin 2 of the DLC, Bus circuit # 915.and is found on Pin 10 of the DLC. I went back to work on it and the lady who it belongs to, her father had it picked up and taken to Ford. 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. Because thrills like these dont happen often. (if your unit turns out not to be faulty then we will refund your payment less a small testing fee and return shipping). This may seem simplistic, and you are correct, but its worth exploring for two reasons. Then pull the battery for 30 minutes to reset everything. From experience what I had,they could spend 10+ hours + some parts.So actually I don't have big choice. I guess it's in the same place as the 1.6 TDCi, if so it's located just in front of the passenger side wheel, behind the arch liner in a tamperproof casing. right now its at the dealer and id rather not pay them to diag if its probably not the ecm Well place a fine metal tool between the pins and feel the resistance when we remove it. When a vehicle has U0100, most of the time, it won't run or drive anywhere. In a workshop. Clear editor. 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. 2002 ford focus 2.0 dohc no start, no crank, no pcm communication, . If the instrument cluster fails while driving, then this will often cause the engine to cut out. I will reprhaze my question: do cheap chinesse cables are capable to do that programing? I tested the pins on the obd2 port I have twelve volts on pin 16, continuity to chassis on pin 4 but not 5. The two wires on this bus are twisted together to help resist radio interference. No communication to the ABS. Wear and tear and front probing cause the terminal legs to lose tension. 2002 ford focus 2.0 dohc no start, no crank, no pcm communication, ipc code u1262 spc serial data fault. Free shipping . All modern vehicles, for example, will have an ABS brake system. Ford no communication with pcm. Each controller has a set time to communicate. 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. Of course, if you have used this same scanner previously and it worked, then this whole section doesnt apply to you. dancc3 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. [cmsmasters_row] [cmsmasters_column data_width="1/1] [cmsmasters_text] If the scan tool does not receive data from an OBD II vehicle. 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.. The Ford FCSD aftermarket remote entry system comes with a starter interrupt that should be disabled on PATS equipped vehicles. Any ideas what fault could be to my ford? Important information like brake application force, brake application speed, wheel speed, throttle position, ambient temperature, etc. Just go ahead and buy a new cable. See checking the Controller diagram below. The cost of diagnosing the U0121 Ford code is 1.0 hour of labor. found fuse #36 in the batt dist box blown and pops a new on right away. Necessary cookies are absolutely essential for the website to function properly. There is no module-to-module communication on this network. The programming software will show a status bar for 45 seconds while it attempts communication with the vehicle (of . 2014 Ford Focus Se 2.0L (Lot# 64456922, VIN: 1FADP3F27EL204541). However, they do it at lightning speed. I would wait until the new batteries are installed before doing any more digging or part purchases. Universal Car Truck 3 in 1 Interface Scanner Diagnostic Tool For V2013.03 CDP+ ". 2020 FORD TRANSIT 3.5L NO COMMUNICATION WITH PCM. January 2022 Jason, MAZDA6 shuts down while driving fuel pump not monitored, may be no engine light etc. Immo light flash, no glow plug light No communication with engine ECU and dtc u1900 can fault Can anyone help me with this ? Upload or insert images from URL. Computers are great most of the time, but when they dont work, theyre a pain in the jacksie. Leave the ignition key in the "OFF" position. Thank you for your time! I tried disconnecting the battery but no luck. *** I have used Ancel AD410 and O'Reilly store's OBDII scanners, both were not communicated to ECU. 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. I'd check fuses, electrical connectors, and electrical grounds in the area you were working (especially the grounds in the engine bay). Ford Focus - ECU Charge Control Kaput - elekie&a/c doctor. Also got a p1670 code. 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. U0100 is a generic trouble code, which means it can be seen in various makes and models. I susspect the issues is in the Instrument Cluster. Imobilizer light flashes rapidly. Failure Date: 08/13/2022. But opting out of some of these cookies may have an effect on your browsing experience. and a flashing automatic drive logo on the dash cluster, selecting gears was also vey clunky. Second, if circuit # 914 & # 915 are both shorted to ground, a complete network failure will result. Started Monday at 08:19 PM, By Save my name, email, and website in this browser for the next time I comment. Without them there will be a lot of noise on the CAN Bus. They, in turn, signal back so that all the controllers talk to each other. Module located at-> under hand brake, center console. As you know, modern vehicle electrical systems increasingly employ control modules to manage system functions. Ford Focus 1.8 ECU Fault - Engine Malfunction warning This ECU is a common failure especially for 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. This can help minimize the potential list of causes, making the repair much easier. Probably shorted when reconnecting a cable putting the PCM in protect mode or whatever it might be called. I have Ford Focus 2005 LX petrol hatchback. Free shipping . 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. Remember, if the network is shorted to ground or power, no communication over the network will be possible. When writing this post, I assumed your scan tool powers up when you plug it into your vehicles OBD port, but it just wont connect. Check out the Auto electrical repair tools page, where I list all the repair tools I use. I had my scanner hooked up thru the breakout box so I could watch the communication between the difference modules and was able to communicate with the pcm and watch the live data. But still no communication with the ECU. Now, turn ON the ignition switch and compare the signal(s) you see with the diagrams below. Share | Add to Watchlist. Check for corrosion or debris in the plug. As an alternative, consider shipping just your controller to a specialist control module repair centers, they will test and repair your controller without removing its software, and so once repair and returned in the mail its a plug and play type deal. Did you ever find out what the problem was? 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. DaveT70 zr. Ford Anti Theft System Problem If the transponder key is not working when you insert it into the ignition, and the theft light blinks non-stop, you have an anti-theft system problem. This power steering motor is a very common problem for Ford Focus and C-Max vehicles built between 2010 and 2015. The crankshaft is replaced. What does that mean? EFI Software Problems: Often times, when EFI software related functions don't work properly, it's caused by a corrupted software download/installation. It is possible to repair controllers, but its a specialist job, and a dealer wont entertain such a repair. With the battery disconnected and the voltmeter set to Ohms. Module located at-> under Battery Junction Box. Most good scanners will have a detachable and, therefore, replaceable OBD cable. Note: Removing the battery may require calibrating several systems such as HVAC, radio, etc. The first is that if damage occurs to one wire, communication should continue between the modules, but diagnostics will likely be affected. There is no need to re-code or reprogram your instrument cluster once you receive it back, just plug in and away you go. Traction control light illuminated. My question is this, do I need a special cable to program Instrument Cluster to a car if I get one second hand? 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. My fuse box has some corrosion in it so had to clean it up. Some people in warmer climes leave it disconnected. These are on sale used here every day. Vehicle computers are known by several names and acronyms, and to make things even more exciting, manufacturers use their own names. Labor: 1.0. 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. Before you start chasing the wiring issues. FocusRS.org is the largest forum community to discuss the 2016+ Focus RS. Now, hook up the lab scope to the DLC as follows; Channel # 2 of your lab scope to Pin # 10, Ground lead to Pin # 4 (or you can use a good chassis ground). Thank you Guys!!! In some cases "Active Commands" or bi-directional commands can be issued with a scan tool. 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. When one of these modules loses communication with the PCM, the code U0100 will present itself. Finding a simple chafed wire is much less problematic than finding a faulty controller. The first two steps are about getting as much information as you can and eliminating possibilities. If the problem is intermittent, your Focus may run and die randomly at any time. Well, front probe the pins and compare tension. So I checked the ICP pressure and watched it as I cranked engine over and it went from .26v to 2.95v while cranking. P0100 is difficult to diagnose, even for an experienced automotive technician. 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! Were using our ability to feel the difference in tension from one terminal to another. A blown fuse is often the cause of a scan tool that wont power up. Also noticed cranking voltage dropped to 8.7v which won't allow idm to fire injectors.