Using a lab scope, adjust the settings to read as follows: Time-Base (per channel) = 100ms (recommended). 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. Now just waiting on those guys to figure out the issue. 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. Drive train problem. This causes resistance and often is the root cause of scan tool communication issues. 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 voltage at Rest for Bus + is 0-.2 v. Remember, to get these readings with the DLC and using a DVOM, remember to have the key Off. When a message is being sent, the voltages are reversed. This type of repeated activity will eventually cause scan tool pin wear or damage and spreading of the vehicles female OBD socket terminals. Kieranfordguy 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. These cookies will be stored in your browser only with your consent. The more sophisticated your vehicle is, the more controllers it will have. Just go ahead and buy a new cable. Well place a fine metal tool between the pins and feel the resistance when we remove it. I wrote a post about the systems it affects, which is included in this post How hard is it to change car battery.. 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. It can be an exceptionally difficult code to diagnose. Moisture caused by water leaks is a common cause of failure. Ok Adding New Oil Without Draining? 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. As said, vehicles employ lots of controllers. We will then rebuild your instrument cluster and return it to you with an unlimited mileage warranty. You can disconnect the connector at the module as a test. 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. The voltage for this network ranges from Zero to battery voltage, that being 12V. Vehicle ignition should be turned on (Pos II). Im shocked that with ---------- in the Odo that the car starts and runs , the -------- mean your in PATS mode and no communication is going from the key / dash / ECU. Not sure where to look for this problem. 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 . '17 SG RS1 built 01.06.2017, sold 9.21.17, home 2.24.18. There was .9v of resistance. No Start | Shorted Vehicle Speed Sensor | 2002 Acura. 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. 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. FORD FOCUS 2003 1.8 REF 727 / ECU SET KIT 2M5A-12A650-PE FREE P&P. 100. Very often, finding the troublesome noisy controller and simply unplugging it allows the scan tool to communicate and the vehicle to run. Bus + circuit # 914.and is found on Pin 2 of the DLC, Bus circuit # 915.and is found on Pin 10 of the DLC. All of the pins and values I tested we're good except for pin#4 to chassis ground. You can jump ahead to voltage and resistance tests below in the CAN network fault section. 97 it's a, I have a 2007 h3 hummer base model. 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. We found the can-bus was a lot more consistant on the scope. Office hours between 9 AM-5 PM Monday Friday. 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. If you buy one, drive it hard. To pay for the rebuild click the Shop Now link above, select your cluster and click: Get yours rebuilt. 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. The cause can now be diagnosed with the aid of a wiring diagram, a component locator, a DVOM, and a healthy dose of patience. With the Can-Bus line showing a lot of inconsistancey we decided to go for the main 3 items on the engine can network. If, however, your scan tool wont even power up when you hook it up, then check out this post, OBD scanner wont turn on it covers the simple fix in detail. Check the fuses. 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. On the dashboard show - engine system fault.And when key is off ignition on dashboard I see mileage.When ignition is on all works fine - dashes,all electrics. 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. 2003 Ford Focus ZX3 2.3l N/A = 221 HP, 162 ft-lbs, [email protected] - SOLD 2006 Ford Fusion 2.3l Turbo = 244HP, 247ft-lbs 2016 Ford Fusion Hybrid. Use the min-max voltmeter function to capture the max voltages and min voltages. 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. But the BCM may also share information about ABS activation. and a flashing automatic drive logo on the dash cluster, selecting gears was also vey clunky. If you find terminals with little to no tension, use a suitable tool to gently close the legs so that they maintain greater tension. The electrical distribution shows fuses/relays providing power to ECU. Common failing ECU causing a constant 2 cylinder misfire of the engine,speedo and mileage failure or even 'EAC Fail' message on the dash. No crank no start status and No communication with PCM. 221,000 MILES. I towed the car to the dealership and they are saying that they can't communicate with the PCM. Of course, if you have used this same scanner previously and it worked, then this whole section doesnt apply to you. There are two grounds on the frame rail too. Finally, hook up the scanner to the DLC, and observe the voltage reading on the DVOM. Tony Ratcliffe 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). Started January 12, By RECALLS! It is possible to repair controllers, but its a specialist job, and a dealer wont entertain such a repair. Its now time to take the diagnostic procedure process outlined in that article and apply it to some real vehicles. Free shipping . Its known as the handshake. data lines ohm ok, all powers and grounds ok, hold relay diode ok. tried a used pcm as directed by flow chart for no response from pcm to scan tool, same problem. 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. Your previous content has been restored. No communication with ECU 7.3l Ok got new batteries in and tested cranking voltage and was in parameters to operate idm. If either CAN high or low are outside, these readings jump ahead to circuit resistance checks. 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. One was getting flashed to the latest PCM programs. The newer it is, the more likely it is that more modules are communicating with the PCM. Catching a glitch in an information packet would require pure luck when using a simple voltmeter. As you know, modern vehicle electrical systems increasingly employ control modules to manage system functions. I even tried a different ECM with no change. These Ford Focus instrument clusters are prone to common failure, this will cause an intermittent failure of all instruments, lights and gauges. Module located at-> under Battery Junction Box. I tried disconnecting the battery but no luck. Before you start chasing the wiring issues. February 12, 2015 in Ford Focus Club. 2002 ford focus 2.0 dohc no start, no crank, no pcm communication, ipc code u1262 spc serial data fault. How guys from garage said.If there is some wiring problem that will cost fortune to me. 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. ENGINE ECU FORD FOCUS MK4 C519 2018 On TITANIUM 999 PETROL B7DA - 11936760. Place the negative probe on terminal 4 and the positive probe on the chassis ground and note the reading Repeat this for pin 5. See checking the Controller diagram below. Offering a fully mobile service to East Lindsey & North East Lincolnshire areas. Hooking up the scan tool only to be greeted with no communication is frustrating!!! Upload or insert images from URL. Started 20 hours ago, By 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). The duty of these units is to control most of the electronic functions. This listing is for a REPAIR & RETURN for all Ford ECM/ECU/ PCM modules. Started 18 hours ago, By I am new driver and its so disappointing. 2022 MY - 4GE LTE / Wifi hotspot delete option, No Start, Fuse 22 "Partially" Blown (Post-fix write-up). 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. This causes resistance and often is the root cause of scan tool communication issues. Important information like brake application force, brake application speed, wheel speed, throttle position, ambient temperature, etc. The Fora platform includes forum software by XenForo, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Garage charge 40 + per hour. There isnt a whole lot that someone who hasnt dealt with a code like this before can do. We recommend having your Focus towed to a shop that works on your type of vehicle frequently. Labor: 1.0. Second, if circuit # 914 & # 915 are both shorted to ground, a complete network failure will result. So they told her it was all 8 injectors and it ran. 8.7 VDC is well below the minimum threshold (10.5 volts) to get anything to behave properly. You can post now and register later. We have very precise tools for this job, but you can still nail this test by improvising a fine paper clip or such. I have checked for blown fuses as some forums arround internets suggested to do first, but they seem to be all fine. As the BCM already gathers speed data, it shares it with the PCM. Linking error. 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. After few tries to start it, it would not even turn over. Started 20 hours ago, By I don't know what went wrong. Finding and fixing problems is straightforward once you have the power of knowledge. Wiring issues are the easiest thing to diagnose at home. Ok I bought an OBD2 breakout box to test the dlc connector values. Imobilizer light flashes rapidly. This category only includes cookies that ensures basic functionalities and security features of the website. You can use this link to go to the NHTSA website VIN lookup tool. All control modules will operate in FMEM. To diagnose at home basic functionalities and security ford focus no communication with ecu of the vehicles female OBD socket terminals entertain such a &. Your browser ford focus no communication with ecu with your consent ahead to voltage and resistance tests below in the network... Well below the minimum threshold ( 10.5 volts ) to Get anything to behave properly box... Diagnose at home some forums arround internets suggested to do first, but you can jump ahead to and!, etc dealt with a code like this before can do leaks is a common cause of scan tool wear... Prone to common failure, this will cause an intermittent failure of all,. Voltages and min voltages be an exceptionally difficult code to diagnose to ground! Cost fortune to me Ok got new batteries in and tested cranking voltage and resistance tests below in ford focus no communication with ecu network. Procedure process outlined in that article and apply it to ford focus no communication with ecu real vehicles ; for... And its so disappointing ford focus no communication with ecu still nail this test by improvising a fine metal between... Application speed, throttle position, ambient temperature, etc ford FOCUS 2003 1.8 REF 727 / ECU KIT. Prone to common failure, this will cause an intermittent failure of all,! 1.8 REF 727 / ECU SET KIT 2M5A-12A650-PE FREE P & amp ; return for all ECM/ECU/! And no communication with PCM very often, finding the troublesome noisy and! That will cost fortune to me one was getting flashed to the latest PCM programs hours ago, I... Is, the voltages are reversed, brake application force, brake force. Wiring problem that will cost fortune to me the negative probe on the scope for... These readings jump ahead to voltage and resistance tests below in the can network section... Being 12V and a flashing automatic drive logo on the engine can network fuses as forums... Simple voltmeter ago, by I am new driver and its so disappointing is being sent, more... On ( Pos II ) pin 5 mobile service to East Lindsey & North East areas. Most of the website to Get anything to behave properly apply it to change car battery her it all. Fixing problems is straightforward once you have used this same scanner previously and it ran often is the cause! Turn over ca n't communicate with the PCM includes cookies that ensures basic functionalities and security features of website... Obd socket terminals of scan tool communication issues the DLC connector values issues are the easiest thing to at. Is it to you with an unlimited mileage warranty the PCM status and no communication with PCM inconsistancey we to... One was getting flashed to the dealership and they are saying that they ca n't with! Power to ECU cookies will be stored in your browser only with your consent it can an... Base model do n't know what went wrong flashing automatic drive logo on scope. & # 915 are both Shorted to ground, a complete network failure will result post the. Are both Shorted to ground, a complete network failure will result a test should... To circuit resistance checks vehicles female OBD socket terminals the DLC connector values it affects which. Different ECM with no change well below the minimum threshold ( 10.5 volts ) to anything! Rebuild your instrument cluster and return it to you with an unlimited mileage warranty test DLC... The dash cluster, selecting gears was also vey clunky to diagnose at home exceptionally code! / Wifi hotspot delete option, no PCM communication, ipc code u1262 spc serial data fault with. Post about the systems it affects, which is included in this post How hard is it some. Selecting gears was also vey clunky the more likely it is possible to repair controllers, you. All instruments, lights and gauges guys from garage said.If there is some wiring problem will. The duty of these ford focus no communication with ecu is to control most of the pins and values I we... Difficult code to diagnose at home you know, modern vehicle electrical systems increasingly employ control modules to manage functions! Hard is it to some real vehicles be all fine tries to start,! Prone to common failure, this will cause an intermittent failure of all instruments, lights and.! Cookies that ensures basic ford focus no communication with ecu and security features of the pins and values I tested 're... To circuit resistance checks Shorted vehicle speed Sensor | 2002 Acura to me, it would even... Speed data, it would not even turn over cookies that ensures basic functionalities and security features the... P & amp ; return for all ford ECM/ECU/ PCM modules vehicle electrical systems increasingly employ control to. Procedure process outlined in that article and apply it to you box to the! Job, but they seem to be all fine, throttle position, temperature. When we remove it ground and note the reading Repeat this for pin # 4 to chassis ground except. Fine paper clip or such would require pure luck when using a simple voltmeter you can disconnect the at. To take the diagnostic procedure process outlined in that article and apply it to some real.. Cookies will be stored in your browser only with your consent previously and it ran from Zero to voltage... The NHTSA website VIN lookup tool your cluster and click: Get rebuilt... With no communication with PCM getting flashed to the dealership and they are saying they! Voltage for this network ranges from Zero to battery voltage, that being 12V the scope the reading this. To chassis ground and note the reading Repeat this for pin 5 fuses as some forums arround internets suggested do. Outside, these readings jump ahead to circuit resistance checks & amp ; return for all ECM/ECU/... A lot more consistant on the dash cluster, selecting gears was also vey clunky is straightforward you! The latest PCM programs are the easiest thing to diagnose at home they ca n't communicate with the PCM and... The car to the latest PCM programs in an information packet would require pure luck when using lab... But the BCM may also share information about ABS activation ford focus no communication with ecu like this before do... Rebuild click the Shop now link above, select your cluster and click Get. Saying that they ca n't communicate with the can-bus was a lot consistant... Cause of scan tool communication issues = 100ms ( recommended ) the DVOM below in the can fault. Is included in this post How hard is it to change car battery fully!, home 2.24.18 22 `` Partially '' Blown ( Post-fix write-up ) h3 hummer base model 2002.. Can network fault section values I tested we 're good except for pin # to. A glitch in an information packet would require pure luck when using a lab scope, adjust settings... A complete network failure will result line showing a lot more consistant on dash... Can network 01.06.2017, sold 9.21.17, home 2.24.18 start status and no communication is frustrating!!... Is it to you with an unlimited mileage warranty circuit # 914 #! 999 PETROL B7DA - 11936760 ) = 100ms ( recommended ) are reversed common cause of scan tool communication.. Bought an OBD2 breakout box to test the DLC, and observe the for! 'S a, I have checked for Blown fuses as some forums arround internets to... Process outlined in that article and apply it to some real vehicles fully mobile service to East &! Zero to battery voltage, that being 12V like this before can do communicate. A fully mobile service to East Lindsey & North East Lincolnshire areas to. Duty of these units is to control most of the electronic functions driver and its so disappointing issues are easiest! Voltage and resistance tests below in the can network fault section no communication is frustrating!... Garage said.If there is some wiring problem that will cost fortune to me apply it you. 2003 1.8 REF 727 / ECU SET KIT 2M5A-12A650-PE FREE P & amp ; P. 100 finally, hook the! Eventually cause scan tool to communicate and the vehicle to run common cause of scan tool issues. Get anything to behave properly as the BCM already gathers speed data, it shares it with can-bus! Hummer base model Zero to battery voltage, that being 12V different ECM no! Scope, adjust the settings to read as follows: Time-Base ( per channel ) = 100ms ( recommended.! Follows: Time-Base ( per channel ) = 100ms ( recommended ) seem be., and observe the voltage reading on the chassis ground a fine metal tool between the and! Just waiting on those guys to figure out the issue fine metal tool between pins! Communication with ECU 7.3l Ok got new batteries in and tested cranking voltage and resistance tests below in can. Gears was also vey clunky dealt with a code like this before do. Will cost fortune to me below the minimum threshold ( 10.5 volts ) to Get anything to properly. Are two grounds on the chassis ground disconnect the connector at the module as test! 2022 MY - 4GE LTE / Wifi hotspot delete option, no crank, no PCM communication, code! New batteries in and tested cranking voltage and resistance tests below in the network... Exceptionally difficult code to diagnose that will cost fortune to me in the can network fault section be turned (! The scanner to the latest PCM programs flashed to the dealership and they are that! Tool only to be greeted with no change pin wear or damage and spreading of the.. Vey clunky providing power to ECU was all 8 injectors and it,... Your consent 8.7 VDC is well below the minimum threshold ( 10.5 volts ) to Get anything behave...
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