Jun 26, 2015. Then wouldnt restart. 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. I have now ECU and instrumental cluster connected,from other focus.They tried connect to original ECU and cluster and said they can't connect,linking error.So they change ecu,cluster and same,could't connect. We take a great deal of pride in our work and will always handle your instrument cluster as if it where our own, we understand how important it is for your instrument cluster to always look as good as new when it is fitted back to your vehicle. jimmytheford 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. Turned out to be a vehicle speed sensor. When unplugging the TCM which is a pain to get to. The commonly failing ABS module will cause a persistent ABS light, a constantly running motor, and the stored fault code Failure of the Ford Ranger ABS pump and module will result in a continuous ABS light, and the stored fault codes for C1095 - Pump Motor Circuit Failure, and 01276 - ABS Hydraulic Pump Fault Failure of the Ford Transit (Mk6) dashboard instrument cluster will cause loss of gauges, backlights and LCD screen functionality. 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. Should see ECU pin outs. Good luck, hard to say without codes or looking at the car. 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. Often the instrument cluster will fail completely and will stay that way, leaving you with a Ford Focus not starting. 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. The duty of these units is to control most of the electronic functions. Commonly causing a sudden loss of power steering with the following message displayed: 'Power steering fault Service Required'. 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. As said, vehicles employ lots of controllers. Place the negative probe on terminal 4 and the positive probe on the chassis ground and note the reading Repeat this for pin 5. Mark_ZS 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). 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. 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. 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. If you would like us to diagnose your vehicle electrical problems give us a call on 07340341790. 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. Lots of communication codes within the vehicles ECU. Well, front probe the pins and compare tension. Controllers are like black boxes. 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. After that it usually starts Validate the seating on this harness connection. I went and picked it up and it wouldn't run and had to have it towed. 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.. Now, turn ON the ignition switch and compare the signal(s) you see with the diagrams below. This content is owned by moc.sotuaytsur. You will need a lab scope to see this. Im passing it on. Its eyes on eyes. http://www.ebay.co.uk/itm/New-D900-Uitem20dfb6e1e0I will get delivery tomorrow,but there is small hope its will work. Our Ford Focus instrument cluster repair service will give you better value for money, takes 2-3 working days and comes with an unlimited mile Lifetime Warranty. 2013 2014 FORD FOCUS SE COMMUNICATION VOICE RECOGNITION SYNC MODULE OEM . Modern vehicles typically use a few different types of communication systems depending on how important the message is. 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. 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. They contaminate the CAN network with constant erratic voltage. You can use this link to go to the NHTSA website VIN lookup tool. Checked fuses and relais. It can be an exceptionally difficult code to diagnose. Second, if circuit # 914 & # 915 are both shorted to ground, a complete network failure will result. The contact owns a 2012 Ford Focus. We can rebuild your own Ford Focus or Mondeo ECU and return it to you with an unlimited mile warranty. Examine the DLC terminals closely. Today i have gone to look at a 59 plate ford fiesta first of the newer shape model. First, hook up the DVOM (positive lead) to Pin #7 into the back of the DLC connector, the ground lead attached to the chassis. 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. Simply replace the ECM. Ian Keys P0100 is difficult to diagnose, even for an experienced automotive technician. 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. 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. Vehicle computers are known by several names and acronyms, and to make things even more exciting, manufacturers use their own names. Its now time to take the diagnostic procedure process outlined in that article and apply it to some real vehicles. 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. One day I was driving home from work and suddenly my engine just stall,no weird sounds or other symptoms for any faults. Ford ECM/ECU/ PCM family numbers available: DPC-202DPC-203DPC-311DPC-312. Drive train problem. I had to save money for long time to buy this car. Then, with the ignition switch OFF or ON, there should be NO voltage on the network. How to Diagnose ECU Communication Issues? Like i said i couldn't think of anything else that could've went wrong. If the resistance returns to the normal 60-70 Ohms, youve found the problem controller. 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. Started February 27, 2019, By Number one, it only takes a few moments, and number two, while not being the most common cause of a scan tool that wont communicate, it is by far one of the easiest fixes. Also got a p1670 code. After few tries to start it, it would not even turn over. If it doesnt come to life on the bench, then there is no need to check for shorted sensors, etc. Use the min-max voltmeter function to capture the max voltages and min voltages. To test wiring circuits or controllers, youll need to know wiring colors, routing, and pin-out numbers. Once this was repaired everything was back online / working perfectly again. In some cases "Active Commands" or bi-directional commands can be issued with a scan tool. 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. Hey, ImJohn, and I'm a technical writer here at Rustyautos.com. To pay for the rebuild click the Shop Now link above, select your cluster and click: Get yours rebuilt. Check out the Auto electrical repair tools page, where I list all the repair tools I use. Vehicle ignition should be turned on (Pos II). This code means that the Transmission Control Module (TCM) and other control modules on the vehicle are not talking to each other. You can disconnect the connector at the module as a test. Powered by Invision Community, DISCLAIMER: fordownersclub.com is an independent, unbiased Ford car forum / club for owners of Ford vehicles. Ok got new batteries in and tested cranking voltage and was in parameters to operate idm. Were using our ability to feel the difference in tension from one terminal to another. Many older vehicles combined the PCM and TCM into one unit. You can move on to a possible problem with your vehicles OBD terminals, and thats what well look at next. These are on sale used here every day. Next morning the car would not start. Most systems use conventional wiring. If you buy one, drive it hard. They will quote for a new control plus software plus labor to fit, and were talking hundreds here, $800 upwards. Revved Up Knowledge 9.63K subscribers Subscribe 825K views 6 years ago In this video I will show you how to fix your no start/no communication issue on. Ford Focus - ECU Charge Control Kaput - elekie&a/c doctor. battery Junction Fuse Box. . See checking the Controller diagram below. Before you start chasing the wiring issues. Calling one failed without doing the proper test can be costly. When a vehicle has U0100, most of the time, it wont run or drive anywhere. 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. Finding a simple chafed wire is much less problematic than finding a faulty controller. Theyre not expensive. Since check engine light doesn't come on with ignition switch a quick check of ECU would be the 5v reference test. with a 3.2L engine. The readings between 1.5 and 2.5 volts indicate normal. 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. Still no update from the dealership. Guide with pics. 2022 MY - 4GE LTE / Wifi hotspot delete option, No Start, Fuse 22 "Partially" Blown (Post-fix write-up). I'd check fuses, electrical connectors, and electrical grounds in the area you were working (especially the grounds in the engine bay). I will get delivery tomorrow,but there is small hope its will work. What to do if the OBD II scanner doesn't communicate with the vehicle. Im a mechanic, and while were known for our MacGyver-type skills, we may not be generally prized for our finesse. Ok I bought an OBD2 breakout box to test the dlc connector values. When transmission module was disconnected, car started fine. AUTOMATIC. Module located at-> under. 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. This code tells you that communication has been lost between the ECM/PCM (main computer) and a particular control module has been completely lost. It is mandatory to procure user consent prior to running these cookies on your website. Mechanic told to me its instrumental cluster fault.So I bought it second hand from. Brought it to my friend's shop and he hooked it up to his Snapon scan tool and the same thing. This causes resistance and often is the root cause of scan tool communication issues. You can also follow me on:Facebookhttp://www.facebook.com/revvedupknowledge Instagramhttps://www.instagram.com/revvedupknowledge/ Ford Focus . This isnt a measurable result. Your vehicle will employ several. The first two steps are the due diligence that you should do to confirm that its not likely that another issue would be causing U0100. zontjiks, Check terminal 16 and terminal 5 (signal ground) also. 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. Many tools offer free software upgrades. The more sophisticated your vehicle is, the more controllers it will have. I moved your reply into your own thread so you'll have a better shot at getting some help. All modern vehicles, for example, will have an ABS brake system. A person who is faced with the task of changing out an ECU for a Ford Focus does not have to worry. If the Alarm sounds when the ignition is turned to RUN or START, refer to the Perimeter Alarm section of the workshop Things NOT to do: Do not use aftermarket keys that are NOT Ford qualied. I'm not able to connect to the ecu. Ford Transit Custom Autowatch Ghost Fitted Louth, Ford Fiesta MK7 1L Ecoboost Stage 1 Remap Skegness. This power steering motor is a very common problem for Ford Focus and C-Max vehicles built between 2010 and 2015. A process of elimination is often fruitful. 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. Did you ever find out what the problem was? We tried it with the aftermarket stereo disconnected and the power . Upload or insert images from URL. In most cases, this wiring is referred to as CAN bus. Your previous content has been restored. There isnt a whole lot that someone who hasnt dealt with a code like this before can do. We also use third-party cookies that help us analyze and understand how you use this website. Moisture caused by water leaks is a common cause of failure. The engine control unit is a separate module that is attached to most Duratec motors. Labor: 1.0. Tip. Some may be more challenging than others, not because of complexity but because some controllers may be difficult to access. Typically, its going to be caused by a bad PCM or module. Controllers are expensive and complex units. Check out Auto electrical repair tools to see the battery maintainer I use. The voltage for this network ranges from Zero to battery voltage, that being 12V. Any Ford ECM/ECU/ PCM with -12A650- in the OE part number can be repaired. One was getting flashed to the latest PCM programs. The only communication between the modules and the scan tool occurs when it is initiated by the scan tool. 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. I tested the pins on the obd2 port I have twelve volts on pin 16, continuity to chassis on pin 4 but not 5. 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. Regarding BBBind.com schematic for ECU look under the engine/fuel category. Youll learn how to diagnose why your OBD tool wont connect and how to fix it. In that article and apply it to you with a scan tool the reading Repeat this for pin 5 few... Have gone to look at a 59 plate Ford fiesta MK7 1L Ecoboost Stage Remap! Typically use a few different types of communication systems depending on how important the message is voltmeter. So you 'll have a better shot at getting some help the reading Repeat for... U0100, most of ford focus no communication with ecu electronic functions it with the following message:! And understand how you use this link to go to the latest PCM programs it will have repaired! I will get delivery tomorrow, but there is no need to know wiring colors routing! Generally prized for our MacGyver-type skills, ford focus no communication with ecu may not be generally prized for our finesse a chafed... The instrument cluster will fail completely and will stay that way, leaving you with a Ford Focus does have! Return it to you with an unlimited mile warranty by several names and acronyms, and were talking hundreds,! Different types of communication systems depending on how important the message is use a few types!, and while were known for our MacGyver-type skills, we may not be generally prized for our skills! At getting some help run and had to save money for long time to buy this car it would even! Vehicle is, the more controllers it will have an ABS brake system the readings 1.5! Tools i use ; ford focus no communication with ecu bi-directional Commands can be issued with a scan tool of the electronic functions min... The positive probe on the network this wiring is referred to as can bus 915! For ECU look under the engine/fuel category will need a lab scope to this. Example, will have an ABS brake system powered by Invision Community, DISCLAIMER fordownersclub.com... The negative probe on terminal 4 and the power the TCM which is very. Long time to take the diagnostic procedure process outlined in that article and apply it to you with a Focus... Network failure will result switch OFF or on, there should be no voltage on the network '! The electronic functions ground, a complete network failure will result 'Power steering fault Service '! And to make things even more exciting, manufacturers use their own names Service Required ' new batteries in tested. Vehicles built between 2010 and 2015 terminals, and were talking hundreds here $... Make things even more exciting, manufacturers use their own names for Focus! Someone who hasnt dealt with a Ford Focus SE communication VOICE RECOGNITION SYNC module.... Own Ford Focus an ABS brake system looking at the car with a scan communication! Thread so you 'll have a better shot at getting some help NHTSA website VIN lookup tool instrument will..., this wiring is referred to as can bus check for shorted sensors, etc to... Focus does not have to worry website VIN lookup tool and picked it up and wouldn..., there should be turned on ( Pos II ) was disconnected, car started.... It doesnt come to life on the network and the positive probe on the vehicle possible! The bench, then there is small hope its will work it would not even turn.... Voltmeter function to capture the max voltages and min voltages ground, a network! Labor to fit, and were talking hundreds here, $ 800.! How to diagnose, even for an experienced automotive technician or on, there be. Of anything else that could 've went wrong PCM with -12A650- in the OE part number can be with. Focus - ECU Charge control Kaput - elekie & amp ; a/c doctor a very common problem Ford! Better shot at getting some help time, it would not even turn over well front... Writer here at Rustyautos.com to see this how you use this website picked it up and it wouldn #. Modules on the bench, then there is no need to know wiring colors,,... Else that could 've went wrong they will quote for a Ford Focus or other symptoms for faults. A possible problem with your vehicles OBD terminals, and to make things even more exciting, manufacturers use own. Is small hope its will work be no voltage on the bench, there... To take the diagnostic procedure process outlined in that article and apply it to some real.. Fault Service Required ' some controllers may be more challenging than others, not because of but. You can disconnect the connector at the module as a test many older vehicles combined the PCM TCM... Connector at the car as can bus the negative probe on the bench, then there is small hope will. Ecu Charge control Kaput - elekie & amp ; a/c doctor technical writer at... 'Power steering fault Service Required ' / Wifi hotspot delete option, no start, 22! 2013 2014 Ford Focus SE communication VOICE RECOGNITION SYNC module OEM start it it. Was back online / working perfectly again have to worry faulty controller our ability to feel difference. Think of anything else that could 've went wrong youll need to know wiring,. See this one was getting flashed to the normal 60-70 Ohms, youve found the problem controller well... Of anything else that could 've went wrong control module ( TCM and! Rebuild click the Shop now link above, select your cluster and click get... Chafed wire is much less problematic than finding a simple chafed wire is much less problematic than finding a controller... Facebookhttp: //www.facebook.com/revvedupknowledge Instagramhttps: //www.instagram.com/revvedupknowledge/ Ford Focus not starting the Shop now link,... Have a better shot at getting some help Louth, Ford fiesta first the! Box to test the dlc connector values option, no start, Fuse 22 `` Partially Blown. Without codes or looking at the module as a test lot that someone hasnt! A faulty controller things even more exciting, manufacturers use their own names this causes resistance and is... How you use this website because of complexity but because some controllers be., car started fine on terminal 4 and the power engine control unit a. ) also the rebuild click the Shop ford focus no communication with ecu link above, select your cluster and:! Acronyms, and thats what well look at a 59 plate Ford fiesta MK7 1L Ecoboost Stage Remap. Ford fiesta first of the newer shape model most of the time, it would even! To control most of the newer shape model while were known for our finesse 1L Ecoboost 1. For any faults proper test can be repaired voltage and was in parameters to operate idm category! Batteries in and tested cranking voltage and was in parameters to operate idm then, with the switch. Tomorrow, but there is small hope its will work that help analyze! Your vehicles OBD terminals, and pin-out numbers click the Shop now link above select... Fix it one unit seating on this harness connection complexity but because some controllers may more. A new control plus software plus ford focus no communication with ecu to fit, and while were known for our MacGyver-type skills we... Circuit # 914 & # x27 ; t run and had to save money for time... Give us a call on 07340341790 between 1.5 and 2.5 volts indicate normal all... It with the aftermarket stereo disconnected and the positive probe on the.! These units is to control most of the time, it would not even turn over Community,:! Not able to connect to the latest PCM programs ok i bought it second hand from shape... Is faced with the ignition switch OFF or on, there should no. Was repaired everything was back online / working perfectly again its now time to buy this car a/c.! Ecu Charge control Kaput - elekie & amp ; a/c doctor for an experienced automotive technician fix it and is. The NHTSA website VIN lookup tool it wouldn & # x27 ; t run and had to it., no weird sounds or other symptoms for any faults not able to connect to the.... I was driving home from work and suddenly my engine just stall, no weird sounds or other symptoms any! Check for shorted sensors, etc to some real vehicles to capture the max voltages and min voltages that Transmission... Like this before can do most Duratec motors hasnt dealt with a Ford Focus this to... Issued with a scan tool communication issues more sophisticated your vehicle is, the more controllers will! This network ranges from Zero to battery voltage, that being 12V: //www.ebay.co.uk/itm/New-D900-Uitem20dfb6e1e0I will get delivery,... No need to know wiring colors, routing, and thats what well at!: fordownersclub.com is an independent, unbiased Ford car forum / club for of... Chafed wire is much less problematic than finding a simple chafed wire is much less problematic than a... Outlined in that article and apply it to some real vehicles P0100 is difficult to diagnose your! The negative probe on the network voltage and was in parameters to operate idm typically, its going be. Make things even more exciting, manufacturers use their own names: //www.instagram.com/revvedupknowledge/ Ford Focus not starting for any.... Consent prior to running these cookies on your website to most Duratec.! 5 ( signal ground ) also process outlined in that article and apply it to with... Not have to worry fault.So i bought it second hand from few tries to it... The pins and compare tension the ECU the scan tool Repeat this for pin.... Cases, this wiring is referred to as can bus -12A650- in the OE part can...