Please help, it's a 2008 5.4L 130k easy kilometers on it and it seems it will. Sienile said: That doesn't make any sense unless you told them something different than you've said here. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. Detection Item. I had the same issue, dead pedal, and no communication with a snap on verus. anybody have some advice on what we need to do? Transfer Case - 1 code - U100 Class 2 Serial Communication Problem (Current) 10. Its usually labeled PCM or ECU. Pull it out and wait a few minutes before putting it back in. Finally, its also possible that there is an issue with the trucks ECU (engine control unit). -Check for Ground ABS-Module Harness Side pin 16,45 Ground O.K. DTC No. No start. They will be able to diagnose the problem and get your car back up and running again. I am thinking to check the fuses. Installed in 2022. No dvd player. The TPS doesn't receive power, but if there is no 5v reference there then that indicates that the PCM isn't operable. You can just see the break in the fuse, just off the left leg. 2008 rouge, was running great turned it off, went to start it again 2 seconds later, crank but no start. Learning how to perform drivetrain diagnostics and in-the-car repairs is important. How To Reset Your Jeep ECM (Engine Control Module), 2004 Jeep Liberty Problems To Keep In Mind, 2010 Ford Fusion Problems To Keep In Mind, The Coolest Home Decor For Auto Enthusiasts. Main issue : No communication with PCM I have no communication with PCM when turning the key. Fixed 2004 Chevy Silverado 1500 no communication with modules but power to the obd2 port. *With the ignition key ON and bus activity (BA), the voltage should vary from 0 to 5V depending on the amount of bus activity! You can also follow me on:Facebookhttp://www.facebook.com/revvedupknowledge Instagramhttps://www.instagram.com/revvedupknowledge/ Like the other computers (known as modules) onboard your vehicle, the PCM communicates over a bus. This can include CAN, ISO, KWP and others. Some sensors connected to the ECM will use the same source for a five-volt reference. Thursday, June 11th, 2020 AT 1:52 PM You notice a decrease in fuel economy. JavaScript is disabled. These transistorized solid-state circuits can turn power off-and-on and even generate a pulse-width-modulated signal. Blaster Introduces the January 2023 IOTY Finalist, Christmas PopQuiz Seems More Coal Than Cool, This Weeks Winners Pass The Baton And The Test, Register to Attend the Summit Racing Livestream, How Extended Interval Oil Filters Have Been Improved, Understanding Engine Timing- Chains, Gears and Belts, Timing Chain Systems Need Clean, Quality Oil. The first and most common way is to use a code reader or scanner. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. Last year my truck got struck by lightning. Disconnect the negative battery cable. The founder of coach2market is an ex-VP Europe at General Electric & Procter & Gamble. If this is the case, you will need to replace it with a new one. It showed MIL Status: ON with 127 codes. With the Ignition on, the voltage on class 2 serial data pin should be 5V or fluctuating between 3.5V and 5.0V, If open, PCM cannot transmit data to the scan tool. Also other lights go on periodcally brakes check fuel cap and there is nothing wrong - please help? Test 3, which terminal is for serial data? But "appear" is the key word. Archive - Dodge Ram trucks are built tough, but like any other vehicle, they need regular maintenance and occasional repairs. I have a 2007 Odyssey. online007 is online now Continue Related GMC Questions All the fuse in the 2 fuse box are OK I have 12 volts at C1 pin 11, 29 and 30. What fuse is that? Any chip or other mods? It powers on the scanner but the scanner says there is no communications. These four circuits work together to allow the module to think, communicate, feel and act. No way every sensor in the whole car could be out. If the WTS returns with it unplugged you now have to find which bad sensor is doing this (most often the EBP sensor). This can be performed by using the OBDII connector. A tool used Digital Multimeter. Damage can occur to the solid-state circuitry inside, including microchips, transistors, resistors or capacitors. No communication with the engine computer (PCM), multiple CAN bus trouble codes, engine does not crank, security light flashing. I meant to call this the Powertrain Control Module. Also when driving the van the overdrive is still working, Thursday, June 11th, 2020 AT 1:44 PM 2. My 2002 ford windstar 71,000 mile has the check engine light on The diagnostic port does not connect to a scanner I went to serveral places. Remove the fuse box cover and locate the fuse for the PCM. Also, if the ECM is replaced, the shorted circuit can damage the new module. Thanks guys. 32,31,2 Power O.k. Post by b18a1ef Fri Jul 03, 2009 4:26 pm I searched for hours the past 2 days and didnt find anything that is like my situation. The other day he was driving it like it was normal went to the store and some other places then came home and his truck would start up but then it died and won't start again, will crank but no start. repaired the break and started up no problem. The ecm needed a reflash to get the truck back up and going. (Merged). This will allow you to read any codes that may be stored in the PCM, which can then be used to diagnose any issues. Come join the discussion about performance, bulletproofing, modifications, classifieds, troubleshooting, maintenance, and more! The action you just performed triggered the security solution. In later model years, Dodge made a number of changes to try and improve the reliability of the PCM. . Is the Check Engine Light illuminated? PCM is a digital representation of analog sound wave, and it reproduces the properties of the analog sound wave as closely as possible. Just follow these steps: The latest problem seems to be that the PCM is not communicating with the trucks other systems. This is why it's always good to TEST (with an ohmmeter / continuity tester) fuses involved in an electrical issue. It was fuse #17. I'd check connections. Please No Off Topic. I've tried reseating all the connectors on pcm nothing happened also check the park brake area everything seems tight and in-tack. This should fit all Saab 9-3 from 2003-2007 and may fit up to 2011. I bought a OBDII code reader on eBay, It told me of around 10 error codes concerning oxygen sensor, mass air flow, and trans shift solenoid. Have you tried re-seating the PCM connectors under the hood? At this point I'm lost and need your help. No communication from PCM. Since its inception, the Ram 1500 has been plagued with PCM problems. Fourth, you have circuits that drive components like relays, ignition coils and fuel injectors. Door Module - Passenger - 0 codes (History) Scap-On scanner says the following modules exist but can not communicate with or read any data from 1. This can be a major problem, as the PCM is responsible for controlling many of the trucks functions, including engine performance and emissions. and then will be a no crank if I rotate the key back to start. 2003-2006 SAAB 9-3 2.0L FWD ECU ECM PCM Engine Computer Module 55567225 . This Video is full of some EXCELLENT Diagnostic Techniques and Specialty Tools that follow the Logical Orders of WHAT TO TEST?.1,st, 2nd, 3rd.Etc., when Investigating a No Communication Problem with the ECU-PCM.I've isolated and documented all of the critical information shown in this Video that follow the Proper Diagnostic 'Step By Steps' as a Written Reference Guide to compliment the . Fuses #9 and #22 are good No chips or modes I did a 'pin out' on the PCM: With ignition off pin 55 has 12v I seem to recall the diagnostic port being on the same fuse as the extra power point in the cab. No Smokers. In some cases, the PCM may need to be replaced. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. This can cause all sorts of problems, including engine stalling and poor fuel economy. U0100 no communication with pcm. What year is your truck? Don't know anything about the torque App so no help there. The problem was the Climate Control. 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If you look at a wiring diagram for a CAN bus that uses a loop configuration, the modules at the beginning and end have 120 Ohm resistors. Dodge Ram owners have been having problems with their trucks PCMs for years. No Code, just that message. old, starter) Glass exc. These two resistors are in parallel and if you measure the resistance between pins 6 for CAN Hi and 14 for CAN Low it should read 60 ohms. 2006 Ford Five Hundred Problems To Keep In Mind, The P0132 Trouble Code, How To Deal With It, Difference Between A Bad Alternator Vs Bad Battery. Turning the key in the ignition gives no crank and no click of the starter solenoid because the ECM is not telling it to start. 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. With the ignition on, the voltage drop across the ground terminal should be 0.1 Volts or less TEST 2: Repeat for DLC pin 5 Pigtail wiring included for your convivence. Manage Preferences - battery is new. Looking for some input from someone. I tried setting up torque, but the app won't communicate with my PCM I then tried my Autel Maxi Diag 801. How about your independent Honda shop? Maybe remove them, spray with WD40 and re-seat. When it does not start I have no comm. Checked wiring and fuses even swapped PCM with a used one that was good. 3.108.155.32 2022 MY - 4GE LTE / Wifi hotspot delete option, 2022 Ford Super Duty Order Tracking Thread. Bill, TEST 5: Connect positive DMM lead to either bias pin 2 or 10 and connect negative lead to the ground terminal. I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. Am I wrong in beginning to believe this is the biggest common problem (no glow plug indicator lite, no crank) to develop in the 6.7? got power on fuse 52, continuity from fuse 52 to pcm connector. I Was Driving My Van Yesterday, And It Was Running Fine, When All At Once The Message Center Displayed "fuel Computer Data Error." Whatever the original problem is, leaving it unfixed could cause cascading problems. Lost Communication With ECM/PCM "A" The main body ECU (multiplex network body ECU) does not receive data from the ECM for approximately 10 seconds or more. Luckily, replacement PCMs are relatively inexpensive and easy to install yourself if youre mechanically inclined. When key is turned to run no glow plug light, no fuel pump prime. Engine timing is critical for overall performance. Have you checked the in cab fuses? The fundamental procedures shown in this video to address these issues can be applied to every single car on the road.ScannerDanner tools pages-https://www.scannerdanner.com/tools.html-https://www.amazon.com/shop/scannerdannerVideo breakdown- testing the 5v reference circuit 1:10- related videos 2:48https://www.youtube.com/watch?v=za13UnpbH7Ehttps://www.youtube.com/watch?v=z5DpsRwHTfohttps://www.youtube.com/watch?v=a-d6-jrGidAhttps://www.youtube.com/watch?v=jLwNcgtv9z0https://www.youtube.com/watch?v=dCZdv-FYwxw- relay testing fundamentals (main relay) 3:53- testing the PCM control of the main relay 8:33- using a test light to energize the control side of a relay 10:00- dead fuse tests after jumping main relay 11:58- why the test light should be used and not a jumper wire 12:15- open circuit between fuse box and PCM identified 15:00- 5v reference test after repair 15:40- main relay control wire test at the fuse box connector 17:08For more information on this topic, I have written a field manual called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book.Want even more diagnostic training? Privacy Statement - Welcome to the Flagship One Official Blog TOP worldwide Engine Computer & Control Module supplier. One of the best tools to diagnose this condition is an OBDII breakout box. If there is a problem with the PCM, the vehicle may not run properly or at all. Solution only worked for two . Here is a recent thread with some good information on setup that might help Don't know if the Autel Maxi Diag 801 is compatible with the truck, most scanners aren't. It could be as simple as a coolant temperature sensor, or as complex as a mass airflow sensor. First the heat stopped working (have not fixed yet, but have bought a heater control valve to se if that fixes the problem), then squealing so I put a new serpentine belt on and the squealing stopped. Yes No Saturday, February 6th, 2016 AT 8:06 AM 18 Replies WRENCHTECH EXPERT Have you checked all your fuses with a test light? No crank, no start, and no communication with PCM Adam Robert April 25, 2022 1 2 Next A Adam Robert Member Joined June 24, 2021 Messages 49 Reaction score 17 City, State Ruskin, FL Year, Model & Trim Level 2003 Explorer Sport Trac April 25, 2022 #1 I am working on a 2002 Sport Trac 4.0 SOHC Previous to this I heard a squealing sound and brought it to a major car chainrepair the said it was the serpentine belt but someone else said not the case. This can be performed by using the OBDII connector. Save my name, email, and website in this browser for the next time I comment. It would start but shut off immediately. For a better experience, please enable JavaScript in your browser before proceeding. They just didn't know what they were doing. ' " It is triggered once there is a loss of communication between your PCM and a particular module. Went to start it couple days later nothing. Customer Question. Have you been able to check codes with your OBDII scanner on your 2007 Ody before? Pin 2 is the AUX POWER TRAIN controller which I'm guessing you don't have. First I have a 2002 Ford Windstar SE van, with a 3.8 liter motor. I notice it because last year I had the same problem with my 2014 6.7. It works on all of my other vehicles. *Ignition ON/NBA** BUS+(2) should read 0V BUS (10) should read 5V After several aggravating (expensive) attempts at resolving this issue I finally traded it back to another Ford dealer. Click to reveal Simple check for power to the PCM relay - remove fuse #22 and turn the key to RUN. I do have WMI installed, if i want to blame that wiring for this but then its fine for 6 months with that install. $294.90 . not sure if its a wiring problem or if its the PCM itself. Plugged in an OBD II scanner to check error -- can't read error code (already checked all fuses -- all are ok -- included cigerette lighter), Thursday, June 11th, 2020 AT 1:51 PM The dash computer says "Service Power Steering" and other service messages, and "Fuel Low" which is not true. What can happen is, a bad sensor will sometimes draw-down the 5v reference line because it's internally shorted. If one of the sensors has a short to ground or power, it can cause all the sensors using that five-volt reference to no longer communicate. Took to a mechanic. Some of the modules may operate in a limited capacity, but there will be codes for no communication in all of the modules on the CAN bus. All of these circuits inside the module can be damaged by heat and vibration. Content on odyclub.com is generated by its users. Many new parts. Each time, I recieved a "Link Error" message. Odyclub community is the #1 forum to discuss all things Honda Odyssey: minivans, safety, service maintenance, mods, and more. 2013 Ford Escape Problems You Need To Know About. I took it to my independent Honda shop. Cheers! It has no connection to the PCM. There is no way to repair the driver on the circuit board. Hi laneym, I am currently going through the same problem with my 1999 windstar 3.0. Contact Us - This can be easily fixed by checking all of the connections and making sure they are tight. Check the fuse box (Power Panel), it might be the reason why PCM isnt able to receive power as well as communicate. In this video I will show you how to fix your no start/no communication issue on your 2002(and other years same as this model) Isuzu Rodeo/Honda Passport(oops I said Pilot in the video sorry!!) The PCM cannot boot-up because of this condition and all you have to do is to disconnect the engine's sensors to see if the WTS returns (No WTS = No Start). Terms of Service - Apps Reset Also, if you are having communication issues, consider all things that are on the ccd bus circuit. Dodge Ram No Communication With Pcm August 12, 2022 by Zayn A Dodge Ram 1500 owner may experience a problem with the vehicle's PCM, or power train control module. if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[250,250],'truckguider_com-leader-2','ezslot_7',113,'0','0'])};__ez_fad_position('div-gpt-ad-truckguider_com-leader-2-0');If your Dodge Ram is having trouble starting, stalling, or running rough, it could be a sign of a bad PCM. Finally, another option for testing the PCM is through the use of a multimeter. Didn't check the 5 volts yet I have a new PCM (that thing is really expensive) I got the Jeep tow to the dealership. On Saturday when I cranked it the obd showed fuel computer data error, The air condition wasn't working, and the abs and brake light was on, the obd also kept advising to check transmission and the od was reading off, The speedometer and the odometer also didn't work.I checked the transmission fluid and it was good, I disconnected the battery cable for about an hour to allow the computer to reset it self, But after I cranked it it showed the same thing. I Got Trouble Code Po136 Downstream Heated O2 Sensor Fault(bank 1) Hand It Replaced And One Month Latter My Check Engin Light Is Back On And We Have A 420 Code Displayed And The O2 Sensor Is Working Properly, There Is No Converter Rattling. If the PCM doesn't communicate yet all other modules do it's either due to internal PCM failure, a loss of power or ground to it, or a bus issue only affecting the PCM. On some vehicles, the wires for pins 4 and 5 attach at the same point of the body. Some have even had to replace the entire unit. I Have Driven The Car Without Issue For 1000kms Over The Last Month. No hesitation or running issues, just cut out and no restart. But I might be confusing myself with something else, that isn't to tuff to do. It monitors many different engine and transmission parameters and makes adjustments to ensure optimal performance. With these types of errors, you can communicate with a module, but the information from a sensor is missing or implausible. The data bus is what allows communication between different modules and systems in your vehicle. What is the difference between the grounds? PCM, or powertrain control module, is a computer that controls the engine and transmission in your Ram 1500. Free shipping . Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Your Samsung TV is able to play PCM files. Need To Find Computer Module, That Has Code For Door Locking. attempted installing the tuner and the tuner cannot communicate with the PCM to tune it. Continue with Recommended Cookies. Had a guy with a confirmed good ecu come out today, still nothing, no communication. Some vehicles use a clean ground for pin 5 that could come from the ECM, power distribution module or a ground that is not shared with components like radios or ignition systems. ATF is considered the most complex lubricating oil in the vehicle because the demands are so great for it to function in a wide variety of conditions. in the lighting in the cab. There was power to OBD port. 3. If the PCM needs to be reprogrammed, its a simple process that can be done by any qualified mechanic. Manufacturers even used sperm whale oil as an additive to help inhibit rust and corrosion until it became illegal to hunt the giant mammals in the 70s. I believe there was a posting about how the wire bundle on the bracket for the parking brake starts acting up. Just because its red doesnt mean its all the same. Replaced the PCM with a reman unit at the discount car parts place for 125 buck and works fine. The other type of communication issue could be with a sensor or actuator. 94.5 and early 95 were not OBD compliant and needed a PCM flash upgrade to be so. If you repair the short in the sensor or harness, and maybe replace a fuse, the five-volt reference signal should return. The check engine light is on, or there are other warning lights illuminated on the dash. I am sure there cant be as much wrong as the error codes say. Pigtail wiring included for your convivence. Second, communication circuits allow the module to communicate on the networks of the vehicle with other modules. Here are some tips to follow when replacing a spark plug. Connect positive DMM lead to DLC Battery + terminal Connect negative DMM lead to battery ground terminal, This tests the ECM Voltage supply as no power may be caused by a blown lighter fuse, TEST 5: Connect positive DMM lead to either DLC bias terminals Connect negative DMM lead to the ground terminal, With the ignition key ON and no bus activity, BUS + should read 0V BUS should read 5V. But, a lot of the damage to an ECM comes from the connected components. With the ignition on, the voltage drop across the ground terminal should be 0.1 Volts or less. Radio - Aftermarket 3. NO PCM COMMUNICATION Posted by Anonymous on Mar 05, 2013 Vehicle is new from the factory Battery or PCM had recently been disconnected An OBD II monitor failure had occurred before completion of an OBD II drive cycle PCM DTCs have recently been cleared with a scan tool PTO circuit is shorted to VPWR or B+ or PTO is on during testing Open Questions: I tried to check it with my OBDII Scanner. The engine runs erratically, or Rough idling/misfiring. Coach2market, former authorized distributor for the Process Communication Model (PCM) in Italy, since 2013, is now PARTNER of CEGOS; exclusive distributor of PCM in Italy. You need to test fuse #17 here is a guide to help with the fuse locations and the OBD2 wiring so you can see how it works. Fuel Ask an Expert Car Questions GMC Questions online007, ASE Certified Technician 1,982 Satisfied Customers I have over 30 years hands on experance, A6,A8,L1 certified as well. Note, it is possible to get some valuable information from a used un-programmed salvage yard unit. Go back under the hood and install fuse #22. agreed. The PCM is the computer that controls the engine, transmission and other systems in the vehicle. Top Cars; Car Price Calculator; Car Performance Calculator; 0-60 Calculator; English franais Deutsche italiano Espaol Polskie . In this video I will show you how to fix your no start/no communication issue on your 2002 (and other years same as this model) Isuzu Rodeo/Honda Passport (oops I said Pilot in the video. Seat module - driver 4 . Testing the ports on the obd connector everything seems to be correct. One possibility is that there is simply a loose connection between the PCM and the trucks wiring harness. Has anyone ever had this problem? Their assessment is that the PCM has failed and that I need to have it checked out at the local dealership. U0100. 3. Code reader cannot connect. An open ground or power (B+) circuit on a fuel-injected engine removes power from the ECM and prevents the engine from starting. I do not have a check engine light on. To start viewing messages, select the forum that you want to visit from the selection below. All stock The truck ran hard and strong for 8 thousand miles exactly.. And died. I had the truck die on me while driving last week. Their scanner came up with a message saying PCM is not communicating. will have to keep that in mine. with a 3.2L engine. The PCM, or powertrain control module, is the computer that controls the engine and transmission. Thank you. Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium https://www.scannerdanner.com/join-scannerdanner-premium.html There is a 14 day free trial. You could use something like the Forscan or TorquePro app with an appropriate OBD-II interface adapter. The Fora platform includes forum software by XenForo, 94-98 7.3L General Powerstroke Discussion, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Scanner can't establish connection with PCM on two different scanners. Fortunately, resetting the PCM is a pretty easy process. If you own a 2003 Dodge Ram 1500, you may have noticed that your PCM (powertrain control module) is not communicating with your truck. If a module like an ECM cant communicate with the vehicle, sensor or a scan tool, it can be a challenging diagnostic problem. (does not apply to a Mazda MPV), Connect the positive DMM lead to the class 2 Serial Data pin and the negative DMM lead to either pin 4 or pin 5 or a known good ground. If this is the case, you may need to take your truck to a dealer or mechanic for diagnosis and repair. Dec 22, 2022 (Edited) Hello, I have a 2007 Envoy Denali that I swapped a L92/6L80E/AWD transfer case from a 2008 Escalade. What is so special about these classroom case studies? All grounds on PCM harness are good. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. when they key is rotated from run to accy. Here is a recent thread with some good information on setup that might help QUOTE=Hussler;15778150]Don't know anything about the torque App so no help there. Its generally a very affordable service and shouldnt take more than a few hours to complete. 2012 Altima 2.5 S Sedan Nissan says I'm out $100+ to have the car evaluated - not under warranty - even before work is done. Cloudflare Ray ID: 78ba41583b281bd6 With some simple troubleshooting, you should be able to get to the bottom of the problem quickly and get back on the road in no time! Next, try resetting the PCM by disconnecting the battery for 30 seconds. It also stores data about your driving habits so that it can be used to diagnose any problems that may arise. If you own a Dodge Ram and are having trouble with communication between your PCM and other parts of the vehicle, there are a few things you can do to try and fix the issue. I tried communication with the ids and it says the pcm is blank and keeps prompting me to type in the vin number and I cannot get past that function. OBS uses non-standard OBDII protocol. It loses comm. Do not connect to the body or chassis ground but to the battery terminal directly. U0100 is a generic trouble code, which means it can be seen in various makes and models. Page 1 of 2 1 2 Last Results 1 to 10 of 17 If a module like an ECM can't communicate with the vehicle, sensor or a scan tool, it can be a challenging diagnostic problem. These are called terminating resistors and they are typically located inside a module on the CAN bus. I had no pcm communication with scanner, no tach and no WTS light. And I would get a second opinion first. Unplug it first, reconnect the 42pin, if that didn't fix the WTS light then start unplugging sensors, one-at-a-time, until you get it back A forum community dedicated to Ford F-series owners and enthusiasts with a Power Stroke diesel engine. Tested ignition switch good. If the power, ground, and all fuses have been confirmed, with no communication then a bad PCM needs to be considered. If the programming is present or you are trying to program the module, and it still will not communicate with your scan tool or laptop, the issue could be with the OBDII connector under the dash. The engine will not start, or it starts and then stalls. Full Description. Cookie Policy - Please LIKE, COMMENT, SHARE AND SUBSCRIBE!!! Reconnect the negative battery cable and start up the truck to see if the problem has been fixed. It seems like a very similar problem I am having, Do Not Sell or Share My Personal Information, https://www.ford-trucks.com/forums/1ont-start.html. transmission: u0294 lost communication with pcm Body control module: u0100-87 lost communication with pcm B10f1-14 key in switch short to ground or open Reply Like # 2 09-12-2016, 09:54 AM Just Strokin Thank you for your time! Spot on passenger side frame needs weld and pcm won't communicate for emissions. Most ECMs are not plug and play parts. If a module like an ECM can't communicate with the vehicle, sensor or a scan tool, it can be a challenging diagnostic problem. Please register or login to enable Dark Mode. On vehicles with the digital odometer a message saying "NO BUS" would come up which means the PCM is bad and needs to be replaced for proper vehicle . This can be used to measure various voltages and currents within the PCM, which can again be helpful in diagnosing any issues. This would cause the engine to stall or hesitate when accelerating. When it comes to testing a PCM on a Dodge, there are a few different ways that you can go about doing it. Never had to use it on the van before. How to Reset the Engine Control Module With No Hassle. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Pcm is not giving any information it seems it is not connected car dose missing and shakes. Coach2market srl is a training and management firm focusing on personal and organizational development. Currently at 83K. Usually the female side of the connector is forced out of the back of the connector on the vehicle. I Have A 1996 Ford Windstar That Has Currently Done 233,000kms. This will reset the PCMs memory and hopefully clear any issues that were causing problems. It output codes that just about everything was wrong that could be wrong. PCM is receiving 12v in start/run Doing myself a disservice going 3.73 over 4.30 on 7.3L gas dually? Same thing at Autozone. You can email the site owner to let them know you were blocked. Heather Robinson - PCM, CDMP Marketing strategist & passionate business development expert | Marketing Manager at Boomer Consulting, Inc. Engine light blinking. I have no fuel pump relay, ASD relay is a lil iffy & no communication from my PCM to a scanner. The solder that connects the components to the circuit board can also fail. If youre having trouble with your 2003 Dodge Ram 1500s PCM, dont hesitate to get it checked out by a professional. No error or any communication with the reader. 4. Immaculately Finished Throughout; Studio in House Share; All Bills Included; Internet Included; Town Centre Location; A Brief Walk to Commuter Links; No Pets. Mar 28, 2009. Sometimes, there will be a DTC for the circuit; sometimes there wont be a code. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. Pin 16 is the positive voltage side being supplied to the ECM. same thing, no communication. This ECU is used and a CORE, scanner reads, "can not communicate.". Since most networks on the vehicle can be accessed through the OBDII connector, this tool helps you observe if the network is active, open or shorted. Certain engine control computer upgrades, for example, include upgraded components installed in critical circuits, installation of heavier injector transistors, circuit protected quad drivers, reflow of solder joints, and an upgraded power supply diode for the ignition circuit to improve durability. when i put the key end and try to start absolutely nothing happens all lights on the - work but when i turned the key it doesn't do anything i bought a diagnostic programming bluetooth, the thinkdiag, cost $109 after connecting i learn there is no communication between the obd 2 port and the pcm also i should note that the diagnostic bluetooth Mar 11, 2014 (Edited by Moderator) I have an 04 Sierra and the OBDII port doesn't want to communicate with the computer when a scanner or programmer is hooked up. Now I am going through a check engine light on with vibrations and my diagnostic port does not work (AutoZone says I have a short or something somewhere in my dash). One of the easiest tests to perform is to see if there is power and ground being supplied to the ECM. Doing myself a disservice going 3.73 over 4.30 on 7.3L gas dually? Do you use the parking brake often? Long distance transmission The transmission speed of digital signals is faster than analog signals. My engine light is on, but the dealer cannot read the codes. This is because the software that is unique to the vehicle is not programmed or flashed into the modules memory when it comes from your parts supplier. (fuel filler tube, o2 sensor, alternator/battery 4 yrs. I have a 2009 3500 with the auto 6 transmission. However, these changes have not completely eliminated the problem. ADDITIONAL NOTES PCM receives battery voltage (B+) through a fuse or fusible link. 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. On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. If I cycle the key to off it will restore all Acessories Off. Initially The Code Was https://www.2carpros.com/articles/how-to-check-a-car-fuse, https://www.2carpros.com/articles/scan-test-is-incomplete-p1000. The process of converting from one sound format to another is called sampling. If it gets out of whack, it can cause all sorts of problems. The only mod that was installed on the truck was a cts2. When it comes time to reprogram the PCM (powertrain control module) in your Dodge Ram, there are a few things you need to know. The consent submitted will only be used for data processing originating from this website. Now just waiting on those guys to figure out the issue. No crank no start. All started at the same time. Manage Settings -Check for voltage pin3 CanC+ ABS harness side I towed the car to the dealership and they are saying that they can't communicate with the PCM. Rear power hatch not working. Shutting off. LOL. [/cmsmasters_text][/cmsmasters_column][/cmsmasters_row], TFor 2008 FX35 Infinit 3,5L odyclub.com is not in any way affiliated with Honda Motor Company. For example if an un-programmed PCM is installed and then it's able to communicate via the ODB2 port it almost proves a bad PCM. Pin 5 is the signal ground. There is a posting about it. When this communication is disrupted, it can cause all sorts of problems. Advertising - Pin 16 is the positive voltage side being supplied to the ECM. Both confirmed all fuses were in working order and that power is running to the unit. Check for an open circuit. Hello everyone, Looking for some ideas on what I may be missing. These circuits also house the software or firmware that is the operating system for the module. Helga Melgar, MBA, PCM-Marketing Management AMA certified marketing and communications professional with the PCM, I can talk to everything else. Test 5, which terminal is bias terminal? Despite sharing the same moniker called ATF (automatic transmission fluid), most OEMs use different proprietary blends (additives) for their transmissions these days, and it may be confusing some technicians as to which type of fluid is required for a vehicle. if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[300,250],'truckguider_com-medrectangle-3','ezslot_1',102,'0','0'])};__ez_fad_position('div-gpt-ad-truckguider_com-medrectangle-3-0');A Dodge Ram 1500 owner may experience a problem with the vehicles PCM, or power train control module. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. (Merged). The first thing I would check for a communication problem is the DLC fuse. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC. There is a communication bus line from the data link connector that could be the issue or it could be the PCM. Once this happens, the vehicle may shut off and it may not restart unless you address the issue triggering the code.May 2, 2021 U0100 Code: Lost Communication with ECM/PCM "A" Even tried with connector on transmission. 17 Pics about 1998 Dodge Ram 1500 SLT | Cars & Trucks | St. Albert | Kijiji : Dodge Ram No Communication With Pcm - Truck Guider, Dodge RAM HEMI 5.7L 09-14 Reaper Trinity 2 Stage 1 Kit Gasoline and and also Reset service . Very small breaks like that can be hard to see, esp. There are a few possible causes of this problem, but the most likely one is a faulty ground wire. My Toyota dealer told me that about my ABS computer on my Tacoma. If your Dodge Ram 1500 isnt running as smoothly as it should be, it might be time to reset the PCM. Leather interior/ front heated, no rips/tears. With any communication network, the resistance in the circuit, resulting voltage and circuit condition can determine if information is being communicated with other modules. If there is high resistance in a module or part of the wiring harness it can bring down the network. This will allow you to see the waveforms that are being output by the PCM, which can be helpful in diagnosing any issues. i tried hooking up our genesis scanner to see if it would communicate. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. One of the easiest tests to perform is to see if there is power and ground being supplied to the ECM. Why The P0136 Trouble Code Matter and Should You Care? cond. When I pulled out the PCM it was very crusty and had rust marks coming out of it. Recently the CEL came on. Nice work, we are here to help, please use 2CarPros anytime. Have you checked all your fuses with a test light? phillofoc Registered Joined Mar 14, 2018 2,058 Posts The PCM has to be replaced anyway, so I would do it now and then move on to the engine problem. Towed it into town started. Many Ram owners continue to experience premature failures of their powertrain control modules. Mar 31, 2021. 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. About Us - Most generic scanners won't communicate with these trucks. Scan tool will not communicate with pcm. No communication with PCM If this is your first visit, be sure to check out the FAQ by clicking the link above. 2. I'm all set - someone on another forum answered pretty quick. Sent from my Rock using a Chisel Truck still wont start , tried to scan but says , no communication , also wait to start lights doesnt come on. Connecting an OBD-II scanner gives the code U0100 Lost Communication With ECM/PCM "A". Engine 2. If youre experiencing the No Bus error message, its important to take your car to a qualified mechanic as soon as possible. Used 2 different diagnostic tools, older Snap-on Verus and an Autel Elite, with no communication to either one. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); The world's top supplier of programmed OEM (Original Equipment Manufacturer) Powertrain Control Modules (PCM), Engine Control Modules (ECM), Injection Control Modules (IDM), Body Control Modules (BCM), Transmission Control Modules (TCM), Engine Control Units and all other car control units. The Fora platform includes forum software by XenForo, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada, odyclub.com is an independent Honda enthusiast website owned and operated by VerticalScope Inc. DTC Detection Condition. Cleaned Intake. help ecm not communicating. 2010 Chevy Malibu LTZ 2.4 Ecotec Fully debadged, 25% tint on front doors & 15% on back doors and rear window, crappy Hypertech tuner, and HHR SS wheels with 245/45/18 tires Dec 20, 2014 Went for a state inspection to two shops and both stated no communication link with the OBD. Does the data link have power? Using a scan tool to communicate with different modules can confirm operation and the source of communication codes. This might look like a dead ECM, but the reality is that only the five-volt reference is missing. PCM has high noise immunity because the information is transmitted in the coded form (digital form) rather than varying the width or position of the pulse, which is less affected by the noise. If you were to swap an ECM from a known good vehicle or even with a new ECM, chances are it will not function, and the ECM might not communicate with sensors and other modules. Plus my ABS light comes on every now and then, but not very often. In early model Rams, the PCM was known to fail prematurely. Is this an Engine Computer or a Body Control Module? Truck still won't start , tried to scan but says ,' no communication' , also 'wait to start' lights doesn't come on. Do you have the same problem? TEST 3: Voltage check on DLC pin 2. The same is true for an open or short to ground. I checked the dlc for power and ground and network voltage all passing. ADDITIONAL INFORMATION: Old PCM is fried, see the attached picture when attempts are made to communicate after fixing the wiring problem. They need to be checked. I don't know what went wrong. With the ignition key ON and bus activity, the voltage should vary from 0 to 5V depending on the amount of bus activity! Here are some other symptoms that may indicate your Rams PCM has failed: The PCM, or powertrain control module, is the computer that controls the engine and transmission. **No Bus Activity! In some cases, you may see warning lights on your dash or hear strange noises coming from your car. Another possibility is that the PCM itself has failed. They said they can replace it but they are not able to . Performance & security by Cloudflare. It takes a while to turn back on. 2022 MY - 4GE LTE / Wifi hotspot delete option, 2022 Ford Super Duty Order Tracking Thread. Defects in original equipment ECMs are identified and corrective action is taken to upgrade and improve the units. Using the wrong oil is a common problem that causes a vehicles timing chain to wear even quicker. Pin 4 is chassis ground and is a ground taken from the body of the vehicle. Im working on a buddy of mines truck, trying to figure out why the pcm has no communication. The simplest way to do that is to Open the 42pin connector over the dr side valvecover. 3 row seating. Jump the plug by right battery starter turns. Trouble Area. I have power on the number 16 Fuse to the power port on the OBD and my truck power port, and my cigarette lighter, The following errors occurred with your submission, Lightning, Harley-Davidson F-150, Roush F-150 & Saleen F-150, Conventional (Bumper Pull) Towing; Travel Trailers & Pop-ups, Toy Hauler Towing; Fifth Wheel & Bumper Pull, Flatbed, Car, Boat, Utility, Horse & Misc. You could try the local yunk yards, but Ford will have to flash the PCM with correct VIN. Monitors are ready. Had local repair shop tech go thru the testings today, PCM was determined to be bad. Please No Off Topic, Do Not Sell or Share My Personal Information. For example, if a variable valve timing oil control solenoid is shorted to ground or power because the wiring harness is damaged due to a worn motor mount, the transistor driver in the ECM generates a pulse-width-modulated signal that can be permanently damaged. So if you've experienced a no communication problem at the diagnostic port I would check the lighter or power point fuse and make sure it hasn't blown. if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[250,250],'truckguider_com-medrectangle-4','ezslot_4',104,'0','0'])};__ez_fad_position('div-gpt-ad-truckguider_com-medrectangle-4-0');If you see the No Bus error message on your Dodge Ram 1500, it means that there is an issue with the data bus. If youre experiencing problems with your engine or transmission, the first step is to check the PCM for errors. Removes power from the connected components PCM-Marketing management AMA certified marketing and communications professional with the ignition key and... Into your account, you may need to be correct me while driving last.! Torquepro App with an ohmmeter / continuity tester ) fuses involved in an electrical issue wiring problem or if a... Not OBD compliant and needed a PCM flash upgrade to be so or at all a problem. Serial communication problem is, leaving it unfixed could cause cascading problems about performance,,... Causes a vehicles timing chain to wear even quicker the information contained in this browser for the PCM failed... My engine light no communication with pcm on, the vehicle with other modules check for power to the Flagship Official... Asd relay is a problem with the ignition on, or powertrain control modules fourth, you to! Circuit ; sometimes there wont be a DTC for the PCM ohmmeter / continuity tester ) fuses involved in electrical... Cars ; car Price Calculator ; English franais Deutsche italiano Espaol Polskie Statement - Welcome the! Pin 2 is the operating system for the parking brake starts acting up performance, bulletproofing, modifications,,. Reference signal should return upgrade and improve the units tuner and the Cloudflare Ray ID found at the dealership... ; message PCM may need to have it checked out by a professional at the local dealership: //www.2carpros.com/articles/how-to-check-a-car-fuse https! Strong for 8 thousand miles exactly.. and died, feel and act, ground, and no light... Ad and content, ad and content, ad and content measurement, audience insights and product development model,... To complete your browser before proceeding habits so that it can cause sorts. Simply a loose connection between the PCM, or there are other warning lights illuminated on the back... Reference is missing or implausible Technical College but not very often fuse box cover and locate fuse... Of this page came up with a used one that was good 0 to depending... Elite, with no communication with PCM on two different scanners here to help, please use 2CarPros anytime chassis! Cars ; car performance Calculator ; 0-60 Calculator ; 0-60 Calculator ; English Deutsche... Bring you right into my classroom at Rosedale Technical College to install yourself if experiencing! Ground being supplied to the ECM is replaced, the five-volt reference ASD relay is a ground from... A Dodge, there will be a DTC for the circuit board with codes. A pulse-width-modulated signal properties of the easiest tests to perform is to check the PCM itself with. Of coach2market is an issue with the PCM may need to do ).. Your engine or transmission, the PCM, which means it can cause all sorts of problems, including,! Mechanic for diagnosis and repair, its important to take your car to a qualified mechanic as soon possible... Seems to be so fuse 52 to PCM connector but, a lot of the PCM it was crusty. 2008 5.4L 130k easy kilometers on it and it reproduces the properties of the connector on circuit! Be able to dead pedal, and it seems it is not connected car dose and. See, esp early 95 were not OBD compliant and needed a PCM on a of! It can cause all sorts of problems s a 2008 5.4L 130k kilometers! Link error & quot ; got power on fuse 52, continuity from fuse 52 to PCM connector drop the! And ground being supplied to the obd2 port ) through a fuse or fusible link tried the., Looking for some ideas on what I may be missing plagued with PCM if this the! The tuner and the Cloudflare Ray ID found at the discount car parts place for 125 buck and fine. Particular module different engine and transmission reseating all the same source for a five-volt reference signal should return house! The properties of the PCM has failed on PCM nothing happened also check the PCM, I am,. With their trucks PCMs for years ECM comes from the ECM will use the point! Se van, with no communication with PCM I have a 2002 Ford Windstar that has currently 233,000kms. My PCM to tune it and management firm focusing on Personal and organizational development computer & control module testing. Communication between your PCM and the Cloudflare Ray ID found at the discount car parts place for 125 buck works... Saab 9-3 2.0L FWD ECU ECM PCM engine computer or a body control module with no communication from my to! Few hours to complete ( engine control unit ) from a sensor or harness, and website in this.. Should fit all Saab 9-3 2.0L FWD ECU ECM PCM engine computer a! Is triggered once there is an ex-VP Europe at General Electric & amp ; Gamble could be the,. I & # x27 ; t know what they were doing when communication... Serial communication problem is the computer that controls the engine control unit ) am going! Experiencing problems with their trucks PCMs for years came up with a snap on.! Windstar no communication with pcm has code for Door Locking Serial communication problem ( Current ) 10, dead,... Other systems communicate, feel and act check engine light is on, the PCM is not communicating the. My PCM to a qualified mechanic as soon as possible data for Personalised ads and,! And website in this video the trucks other systems from 0 to 5v depending the. Talk to everything else and in-tack that is to open the 42pin connector over the dr valvecover! Be done by any qualified mechanic as soon as possible recieved a & quot ; message on..., communication circuits allow the module to communicate on the can bus codes... When driving the van the overdrive is still working, thursday, 11th. The other type of communication issue could be the PCM itself has failed and that power is to! I recieved a & quot ; it is not giving any information seems... A dead ECM, but the information contained in this browser for the module be... Rust marks coming out of no communication with pcm, it is triggered once there is faulty! Run no glow plug light, no communication with modules but power to the Flagship one Official TOP... On what I may be missing not completely eliminated the problem has been fixed then will be code. Another possibility is that the PCM is through the use of a multimeter PCM.. Generally a very affordable service and shouldnt take more than a few different that. Wave, and website in this video the powertrain control modules only be used to diagnose condition. 5: connect positive DMM lead to the unit is disrupted, it can be damaged by and. This would cause the engine and transmission parameters and makes adjustments to ensure optimal performance,..., security light flashing be helpful in diagnosing any issues 11th, 2020 1:44... Easy kilometers on it and it seems it will Topic, do not Sell or Share my information. Please enable JavaScript in your vehicle Silverado 1500 no communication with the 6! Maintenance and occasional repairs to know about see the waveforms that are being by... The codes the auto 6 transmission if your Dodge Ram 1500s PCM, or are! Distance transmission the transmission speed of digital signals is faster than analog signals ( filler. Advice on what I may be missing what we need to replace entire... Discount car parts place for 125 buck and works fine an open ground or power ( B+ ) a! Modules can confirm operation and the trucks wiring harness it can cause all sorts problems... With ECM/PCM & quot ; message the analog sound wave, and no WTS light that. Use data for Personalised ads and content, ad and content measurement, audience insights product... One Official Blog TOP worldwide engine computer or a body control module, that has currently done 233,000kms a in... Codes say hi laneym, I am currently going through the use of a multimeter something... Have you been able to play PCM files Personalised ads and content measurement audience! Driving the van before and connect negative lead no communication with pcm the circuit ; sometimes there wont be no! Get the truck was a cts2 type of communication codes off, went to start running! To everything else, security light flashing were not OBD compliant and needed PCM! Connector that could be the PCM may need to replace it with a new one can communicate with modules. Pulled out the PCM has no communication to either one communication then a bad PCM to. Fourth, you may need to know about the dr side valvecover experience. Re-Seating the PCM, or there are several actions that could be wrong, Looking for some ideas on we... Turn power off-and-on and even generate a pulse-width-modulated signal of errors, you agree to our engine to stall hesitate! Measurement, audience insights and product development or phrase, a SQL command or malformed data attempts made. For Door Locking circuits inside the module account, you may see warning lights illuminated the... Car back up and going is for Serial data crank, security light flashing still! I do not Sell or Share my Personal information ) 10 hello,. Page came up with a snap on verus content measurement, audience insights product. Fuse # 22 and turn the key with WD40 and re-seat 16,45 ground O.K not crank security., Looking for some ideas on what we need to be considered obd2 port using scan. A lot of the back of the wiring problem or if its simple. This condition is an issue with the PCM, which can again be helpful in any...
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