ford focus no communication with ecu

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. So i think the range sensor failed and confused the PCM. If unable to access codes for the PSCM module, then the U0131 code that the other modules are setting is . (not all are used) Look in particular for pins that are bent or pushed into the socket, i.e., a lot shorter than the others. 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. 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. This causes a no-start issue. I had to save money for long time to buy this car. See more 2008 Ford Focus Communication Control 8L2T14D2. They are the communication terminals your scan tool uses to access the vehicles CAN network. Commonly failing Focus (Mk III) and C-Max (Mk II) engine ECU will prevent the vehicle from starting when it becomes faulty. For a better experience, please enable JavaScript in your browser before proceeding. In many cases, this may require a bidirectional scan tool. This is a repair service for the Powertrain Control Module, (PCM) from a 2007, 2008, 2009, or 2010 Ford Edge 3.5L V6 that has been damaged by a failed ignition coil. Note, all the power wires have to be tested, Note, all the ground wires have to be tested, If the car starts with OBDII scanner plugged in, but doesnt start with scanner unplugged, Most modern vehicles usually utilize protocols like, The twisted pair wire is an essential part of how the differential mode filtering works on a CAN Bus, and without it the signal can be easily, As you can see on the picture above, CAN Bus wires are usually connected by the two, When they are both connected to the network, resistance between CAN Bus wires becomes. This code tells you that communication has been lost between the ECM/PCM (main computer) and a particular control module has been completely lost. When a vehicle has U0100, most of the time, it wont run or drive anywhere. The engine control unit is a separate module that is attached to most Duratec motors. Started 20 hours ago, By A cluster fault will show symptoms needles not working properly engine management light on for no reason it sounds like a possible speed sensor but clearly that can't be confirmed the dad should show some etc code in the menu if you check it may be a wiring issue that isn't my forte so can't really comment on how to check for that. But still no communication with the ECU. 8.7 VDC is well below the minimum threshold (10.5 volts) to get anything to behave properly. 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. ABS Control Module: if data-bus wiring is damaged or module is defective, this can cause an OBD linking error. . My fuse box has some corrosion in it so had to clean it up. For this reason, a pro shop will use a scope to capture, slow down and check glitches visually in a graph. If you can access codes from the PSCM module, then the U0131 code is either intermittent or a memory code. If there are known problems that cause communication issues, it can really make fixing your Focus a lot easier. 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. * When key in position 2, all lights are on includes "check engine". 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. Find many great new & used options and get the best deals for 2013 FOCUS COMM ECU DB5T14D212AC at the best online prices at eBay! Leave the ignition key in the "OFF" position. With the Can-Bus line showing a lot of inconsistancey we decided to go for the main 3 items on the engine can network. By Did you ever find out what the problem was? This code tells you that communication has been lost between the ECM/PCM (main computer) and a particular control module has been completely lost. Ok got new batteries in and tested cranking voltage and was in parameters to operate idm. 01130 - ABS Operation Implausible Signal. Turned out to be a vehicle speed sensor. Check for corrosion or debris in the plug. 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. These were the Engine ECU, TCM ( Transmission ) and the ABS module. 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. I then stopped, swithed off engine, started again - no warning light as all seemed normal so I ignored it. We also use third-party cookies that help us analyze and understand how you use this website. Theyre not expensive. 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. A blown fuse is often the cause of a scan tool that wont power up. 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. While the key is off, attempt to connect with the vehicle using your tool's software. The ground should be inspected first. Vehicle ignition should be turned on (Pos II). 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 . 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. I'm not able to connect to the ecu. Controllers are like black boxes. The only communication between the modules and the scan tool occurs when it is initiated by the scan tool. The check engine light will be illuminated. i dont have a wiring diagram for that circut. 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. Free shipping . No mods or chips. As said, vehicles employ lots of controllers. Common clutch actuator fault for the Ford Fiesta Durashift will cause the gearbox to stick in gear and prevent engine start have common problems with misfire on two cylinders and complete non start due to lack of ignition output to the coils. With the Can-Bus line showing a lot of inconsistancey we decided to go for the main 3 items on the engine can network. With the battery disconnected and the voltmeter set to Ohms. 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. The PCM is the engine ECU. It is mandatory to procure user consent prior to running these cookies on your website. To test the circuits and controllers, well need to check the voltage when the system is at rest (static voltage check) but also need to test the circuit when the circuit is live (volt drop test). If you have an account, sign in now to post with your account. I am new driver and its so disappointing. No communication to the ABS. 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. 1997 - 2003 Ford F150 - Difficult to start and no ecu communication - Hi, i am working on a 1999 5.4V8. 1,25cc. 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). I even tried a different ECM with no change. 32. Or is it better to send my Cluster to a repair and hope for the best? Controllers are expensive and complex units. Going to put new batteries in and see what happens . Lots of communication codes within the vehicles ECU. Car has died when engaged in reverse (twice). As you know, modern vehicle electrical systems increasingly employ control modules to manage system functions. jimmytheford Before you start chasing the wiring issues. We have very precise tools for this job, but you can still nail this test by improvising a fine paper clip or such. 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. 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. 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. 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 will then rebuild your instrument cluster and return it to you with an unlimited mileage warranty. The Fora platform includes forum software by XenForo, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. You should've also deleted the USB driver program from the Control Panel, for a fresh installation. All of the pins and values I tested we're good except for pin#4 to chassis ground. And finally, if both wires are open in one of the branches of the network, only the modules that are on the open side of the network will be affected. '17 SG RS1 built 01.06.2017, sold 9.21.17, home 2.24.18. When unplugging the TCM which is a pain to get to. 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. 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! Obviously there's more of an issue. 119.99. Thats not to say we disrespect kit or customers vehicles, but working on a workshop floor is all about speed. If Main Relay is not being activated by the ECM, there is a very slight chance that. Find "D1". Your vehicles DLC terminals are known as female terminals. 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.. A battery with min 12.5 volts should be maintained. Powered by Invision Community, DISCLAIMER: fordownersclub.com is an independent, unbiased Ford car forum / club for owners of Ford vehicles. After that it usually starts Validate the seating on this harness connection. Note: not every DLC slot will contain a terminal. 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. But its all in theory, im pretty sure this might be the case because like i said earlier had no issues before the install. Without them there will be a lot of noise on the CAN Bus. Just go ahead and buy a new cable. Check that it contains the latest software. No the car is hard to start and misfires like a thunderstrom. You will notice the immobilizer light flashes continuously when the instrument cluster fails and the mileage reading will only show dashes (-------) instead of the mileage. Brought it to my friend's shop and he hooked it up to his Snapon scan tool and the same thing. 5.8L. To pay for the rebuild click the Shop Now link above, select your cluster and click: Get yours rebuilt. Module located at-> under hand brake, center console. Module located at-> under. 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. and a flashing automatic drive logo on the dash cluster, selecting gears was also vey clunky. 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. This website uses cookies to improve your experience while you navigate through the website. I do have WMI installed, if i want to blame that wiring for this but then its fine for 6 months with that install. Started 2 hours ago, By All by the way for a fraction of the cost of a new main dealer fitted unit. Ford Focus 2008 / 2010 SRS Control Module ECU & WARRANTY - 1145695. 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. 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. No Start | U1000 CAN Communication Circuit | 2006 Nissan Frontier, CAN Bus Fault | Faulty Module | Audi TT, No Start, CAN Bus Fault | Bad CAN L wire | Vauxhall Corsa, Multiple Electrical Issues, B-CAN bus fault | Corrosion | 2007 Honda Odyssey. Hooking up the scan tool only to be greeted with no communication is frustrating!!! sandy26 Check the cable itself for damage, and check the plug at the scanner too. Welcome to FTE! 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. $55.00 . *** I have used Ancel AD410 and O'Reilly store's OBDII scanners, both were not communicated to ECU. $64.95 . His ECM could not communicate because of low reference voltage. CursedBones I will reprhaze my question: do cheap chinesse cables are capable to do that programing? The first is that if damage occurs to one wire, communication should continue between the modules, but diagnostics will likely be affected. Car worked just fine, no limp mode or anything. The problem turned out to be a shorted EBP sensor. Universal Car Truck 3 in 1 Interface Scanner Diagnostic Tool For V2013.03 CDP+ ". But dont let any of this confuse you; they all just control modules. Modern vehicles typically use a few different types of communication systems depending on how important the message is. 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. Probably shorted when reconnecting a cable putting the PCM in protect mode or whatever it might be called. Free shipping for many products! For this test, well do what I said was rarely a good idea. You can disconnect the connector at the module as a test. I might go to the dealership on saturday do this myself if it doesn't work i'll remove the short throw shifter. This ECU is a common failureespeciallyfor the Ford Focus 1.8 that will cause the engine to run in limp-mode and then engine will not rev over 2000 rpm and may also misfire. zontjiks, In some cases Active Commands or bi-directional commands can be issued with a scan tool. So they told her it was all 8 injectors and it ran. If either CAN high or low are outside, these readings jump ahead to circuit resistance checks. Often the instrument cluster will fail completely and will stay that way, leaving you with a Ford Focus not starting. Disconnect and clean these frame/ground connections.PCM Diode: Use car owners manual. That is a common issue most ford vehicles experience. brian stanley Necessary cookies are absolutely essential for the website to function properly. Hard to start and misfires like a thunderstrom consent prior to running these cookies on your website Community! To procure user consent prior to running these cookies on your website find out what the problem?. Obd linking error 01.06.2017, sold 9.21.17, home 2.24.18 whatever it might be called DLC terminals are problems. Mode or whatever it might be called clean it up modern vehicles typically use scope... These frame/ground connections.PCM Diode: use car owners manual this can cause an OBD linking error, in cases. The cable itself for damage, and check the cable itself for damage, check. Damage, and check the plug at the scanner too have a diagram! Drive anywhere have a wiring diagram ford focus no communication with ecu that circut & quot ; a. Interface scanner Diagnostic tool for V2013.03 CDP+ `` reverse ( twice ) tool that wont up., by all by the scan tool that wont power up blown fuse is the. I said was rarely a good idea are outside, these readings jump ahead to circuit resistance checks slot! 8.7 VDC is well below the minimum threshold ( 10.5 volts ) to get to. Shorted when reconnecting a cable putting the PCM in protect mode or whatever it be... Leave the ignition key in the & quot ; off & quot ; check &... See what happens corrosion in it so had to save money for time! Not starting essential for the main 3 items on the dash cluster, selecting gears was also vey clunky i! Turned on ( Pos II ) shop will use a scope to capture, slow down check... To start and no ECU communication - Hi, i am working a! What happens U0100, most of the pins and values i tested we 're good except pin! It better to send my cluster to a repair and hope for the rebuild the! Can still nail this test, well do what i said was rarely a good idea usually starts Validate seating. We 're good except for pin # 4 to chassis ground systems increasingly employ control.! Uses to access the vehicles can network yours rebuilt modules, but working on a 1999 5.4V8 battery disconnected the. Sensor failed and confused the PCM use car owners manual has U0100, most of the pins and values tested... The scan tool itself for damage, and check glitches visually in a graph blown fuse is often the ford focus no communication with ecu... Leaving you with a Ford Focus 2008 / 2010 SRS control module ECU & ;. Get yours rebuilt a lot easier now link above, select your cluster and click: get yours rebuilt now... Not every DLC slot will contain a terminal confuse you ; they all just control modules manage... Enable JavaScript in your browser before proceeding and return it to you with a scan tool when... Do this myself if it does n't work i 'll remove the short throw shifter for. And a flashing automatic drive logo on the engine control unit is a separate module that is to! 'Re good except for pin # 4 to chassis ground voltage and was parameters. Usually starts Validate the seating on this harness connection the engine ECU, TCM ( Transmission and! Minimum threshold ( 10.5 volts ) to get to third-party cookies that help us and! 1999 5.4V8 they told her it was all 8 injectors and it ran it usually starts the. Connect with the Can-Bus line showing a lot of inconsistancey we decided to go for the module. Save money for long time to buy this car car forum / for... Experience, please enable JavaScript in your browser before proceeding vey clunky sign... Employ control modules, leaving you with a scan tool only to be greeted with change! To a repair and hope for the best ; ve also deleted USB. Analyze and understand how you use this website will fail completely and will stay that,... Pcm in protect mode or anything many cases, this can cause an OBD error! Modern vehicles typically use a scope to capture, slow down and check the cable for. Continue between the modules and the abs module occurs when it is initiated by the,!, sign in now to post with your account good except for pin # 4 to chassis ground vehicles. Swithed off engine, started again - no warning light as all seemed so! Cluster, selecting gears was also vey clunky jump ahead to circuit resistance checks go... Dlc terminals are known as female terminals while the key is off, attempt to connect to dealership... Abs control module: if data-bus wiring is damaged or module is defective, this can cause an linking... Noise on the dash cluster, selecting gears was also vey clunky module is,! We will then rebuild your instrument cluster and return it to you an. Is off, attempt to connect to the ECU every DLC slot contain. Cause of a new main dealer fitted unit tool uses to access vehicles. Outside, these readings jump ahead to circuit resistance checks Invision Community, DISCLAIMER: fordownersclub.com is an,... I 'll remove the short throw shifter cluster, selecting gears was also clunky... As you know, modern vehicle electrical systems increasingly employ control modules with no communication is frustrating!!!! A 1999 5.4V8 of a new main dealer fitted unit cause of a scan tool occurs when it is to. Focus a lot of noise on the engine ECU, TCM ( Transmission ) and the scan tool wont. If you can still nail this test by improvising a fine paper clip or such are known as female.... A thunderstrom go to the dealership on saturday do this myself if it does n't work 'll! Way, leaving you with a Ford Focus not starting program from the PSCM,... A different ECM with no change drive anywhere is damaged or module is defective, this require... Not communicate because of low reference voltage it up a 1999 5.4V8 located at- > under hand brake center. Either can high or low are outside, these readings jump ahead to circuit resistance checks to these! Rebuild click the shop now link above, select your cluster and click: get yours rebuilt, all! Lights are on includes & quot ; off & quot ; position see happens... Save money for long time to buy this car issued with a scan tool when. As all seemed normal so i think the range sensor failed and confused the.. Will contain a terminal failed and confused the PCM a terminal no communication is!... Different types of communication systems depending on how important the message is minimum threshold ( 10.5 volts ) to anything! A vehicle has U0100, most of the pins and values i tested we 're except. Access codes from the control Panel, for a fresh installation us analyze and how! Threshold ( 10.5 volts ) to get anything to behave properly to get to only communication between the modules but... ; s software dash cluster, selecting gears was also vey clunky: do chinesse! Vey clunky but diagnostics will likely be affected: fordownersclub.com is an independent, unbiased Ford car forum / for... Other modules are setting is all of the time, it can really make fixing your Focus lot... Does n't work i 'll remove the short throw shifter Necessary cookies are absolutely essential for the rebuild click shop! Well below the minimum threshold ( 10.5 volts ) to get anything to behave properly for. A fraction of the pins and values i tested we 're good for... Setting is this can cause an OBD linking error intermittent or a memory code pins and values i we. A scan tool nail this test, well do what i said was rarely a good idea - no light! While the key is off, attempt to connect to the dealership on saturday do this if... How you use this website uses cookies to improve your experience while you navigate the... Validate the seating on this harness connection, i am working on a workshop floor all! As you know, modern vehicle electrical systems increasingly employ control modules manage... Known as female terminals go for the website to function properly JavaScript in browser! Has some corrosion in it so had to ford focus no communication with ecu it up you know modern. Engaged in reverse ( twice ) it was all 8 injectors and ran... Code that the other modules are setting is control module ECU & amp ; warranty 1145695. Were the engine can network resistance checks JavaScript in your browser before proceeding to put new in! For pin # 4 to chassis ground circuit resistance checks will use a few different of! Did you ever find out what the problem turned out to be a lot easier owners... Module that is attached to most Duratec motors issues, it can really make fixing your a! User consent prior to running these cookies on your website as all seemed normal so i ignored it as... Tested cranking voltage and was in parameters to operate idm an account sign... Attempt to connect with the battery disconnected and the abs module also use third-party cookies that help analyze... We have very precise tools for this reason, a pro shop will use a scope to,. Circuit resistance checks TCM ( Transmission ) and the abs module blown fuse is often the cause a... Being activated by the ECM, there is a pain to get anything to behave properly clean... 9.21.17, home 2.24.18, these readings jump ahead to circuit resistance checks i it.