Many Ram owners continue to experience premature failures of their powertrain control modules. 3 row seating. Just because its red doesnt mean its all the same. Took to a mechanic. **No Bus Activity! This bus is referred to as the controller area network (CAN) and it allows all the modules to communicate . 2. If anyone has any suggestions of what the culprit could be please let me know. agreed. 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. How to Reset the Engine Control Module With No Hassle. 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. 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. Fixed 2004 Chevy Silverado 1500 no communication with modules but power to the obd2 port. If this is the case, you will need to replace it with a new one. No way every sensor in the whole car could be out. online007 is online now Continue Related GMC Questions Main issue : No communication with PCM I have no communication with PCM when turning the key. Scan tool will not communicate with pcm. 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. No communication with PCM If this is your first visit, be sure to check out the FAQ by clicking the link above. 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. If the WTS returns with it unplugged you now have to find which bad sensor is doing this (most often the EBP sensor). Oct 14, 2013 #2 Patrick Feeley Member Joined To check you can disconnect the electrical connection at the front of the valve body pan and try to communicate with the BCM. Another possibility is that the PCM itself has failed. Please LIKE, COMMENT, SHARE AND SUBSCRIBE!!! Please No Off Topic, Do Not Sell or Share My Personal Information. An example of data being processed may be a unique identifier stored in a cookie. I notice it because last year I had the same problem with my 2014 6.7. This will allow you to see the waveforms that are being output by the PCM, which can be helpful in diagnosing any issues. There is a posting about it. Over time, the oil filter can collect enough contaminants to become restricted. 94.5 and early 95 were not OBD compliant and needed a PCM flash upgrade to be so. On older throttle cable systems, the carburetor or fuel injection system reacted to the throttle angle. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. Detection Item. odyclub.com is not in any way affiliated with Honda Motor Company. It powers on the scanner but the scanner says there is no communications. Just follow these steps: About Us - And I would get a second opinion first. Before you take your truck in for service, be sure to ask about the cost of reprogramming the PCM. I have no fuel pump relay, ASD relay is a lil iffy & no communication from my PCM to a scanner. The other type of communication issue could be with a sensor or actuator. The PCM, or powertrain control module, is the computer that controls the engine and transmission. Code reader cannot connect. If a module like an ECM cant communicate with the vehicle, sensor or a scan tool, it can be a challenging diagnostic problem. Please register or login to enable Dark Mode. When key is turned to run no glow plug light, no fuel pump prime. 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. 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. Fourth, you have circuits that drive components like relays, ignition coils and fuel injectors. Finally, its also possible that there is an issue with the trucks ECU (engine control unit). The action you just performed triggered the security solution. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. If a module like an ECM can't communicate with the vehicle, sensor or a scan tool, it can be a challenging diagnostic problem. Their assessment is that the PCM has failed and that I need to have it checked out at the local dealership. You notice a decrease in fuel economy. In some ECUs, the crankshaft position, camshaft position and maybe the MAP sensor will use the same five-volt source. Cheers! Doing myself a disservice going 3.73 over 4.30 on 7.3L gas dually? The solder that connects the components to the circuit board can also fail. Dodge ram no communication with pcm dodge ram 1500 pcm reset 1998 Dodge Ram 1500 SLT | Cars & Trucks | St. Albert | Kijiji. LOL. No Smokers. In some cases, the PCM may need to be replaced. Mar 28, 2009. (Merged), I have the same problem with mine. Nice work, we are here to help, please use 2CarPros anytime. The fuse was bad all fixed thank you. I have a 2007 Odyssey. Do you use the parking brake often? Pin 4 is chassis ground and is a ground taken from the body of the vehicle. Do you have the EVTM, by any chance? I'm all set - someone on another forum answered pretty quick. What to do if the OBD II scanner doesnt communicate with the vehicle. When it comes to testing a PCM on a Dodge, there are a few different ways that you can go about doing it. If this is the case, you may need to take your truck to a dealer or mechanic for diagnosis and repair. If it reads 120 ohms, you know that a module is no longer present and the CAN bus and the network will be down. I get a code U0140 LOST COMMUNICATION WITH BODY. I took it to my independent Honda shop. This will allow you to read any codes that may be stored in the PCM, which can then be used to diagnose any issues. Do you have the same problem? Tested ignition switch good. 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. 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. All of these circuits inside the module can be damaged by heat and vibration. Solution only worked for two . One of the easiest tests to perform is to see if there is power and ground being supplied to the ECM. Most ECMs are not plug and play parts. Trouble Area. The consent submitted will only be used for data processing originating from this website. If the power, ground, and all fuses have been confirmed, with no communication then a bad PCM needs to be considered. Yes No Saturday, February 6th, 2016 AT 8:06 AM 18 Replies WRENCHTECH EXPERT Have you checked all your fuses with a test light? It also stores data about your driving habits so that it can be used to diagnose any problems that may arise. Welcome to the Flagship One Official Blog TOP worldwide Engine Computer & Control Module supplier. Third, you have circuits that receive information from sensors and generate reference voltages. Towed it into town started. First, I tried the search tool, I really didhaha. 1. If scanner will not communicate with PCM and fuses are good, you may have a bad PCM. 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. Have you checked all your fuses with a test light? Here are some tips to follow when replacing a spark plug. 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. Pigtail wiring included for your convivence. Im working on a buddy of mines truck, trying to figure out why the pcm has no communication. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. 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. Do not connect to the body or chassis ground but to the battery terminal directly. This can be performed by using the OBDII connector. Full Description. This can be easily fixed by checking all of the connections and making sure they are tight. Yes No Tuesday, July 17th, 2018 AT 12:45 PM 10 Replies ASEMASTER6371 EXPERT Good evening. Codes after cleared: instrument cluster uo100 lost communication to pcm u300a-64 ignition switch. No communication with the engine computer (PCM), multiple CAN bus trouble codes, engine does not crank, security light flashing. Many new parts. Thank you very much for helping me. The latest problem seems to be that the PCM is not communicating with the trucks other systems. Radio - Aftermarket 3. If youre having trouble with your 2003 Dodge Ram 1500s PCM, dont hesitate to get it checked out by a professional. When it comes time to reprogram the PCM (powertrain control module) in your Dodge Ram, there are a few things you need to know. When I pulled out the PCM it was very crusty and had rust marks coming out of it. Some have even had to replace the entire unit. First, check all of the connections to make sure they are secure. No start. The same is true for an open or short to ground. With any communication network, the resistance in the circuit, resulting voltage and circuit condition can determine if information is being communicated with other modules. Luckily, replacement PCMs are relatively inexpensive and easy to install yourself if youre mechanically inclined. Customer Question. The ecm needed a reflash to get the truck back up and going. The only mod that was installed on the truck was a cts2. What is the difference between the grounds? 4. In some cases, you may see warning lights on your dash or hear strange noises coming from your car. If youre experiencing problems with your engine or transmission, the first step is to check the PCM for errors. If it gets out of whack, it can cause all sorts of problems. Its usually labeled PCM or ECU. Pull it out and wait a few minutes before putting it back in. If a module like an ECM can't communicate with the vehicle, sensor or a scan tool, it can be a challenging diagnostic problem. 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 They said that the SKIM was bad. Test 3, which terminal is for serial data? Need To Find Computer Module, That Has Code For Door Locking. Engine light blinking. 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. Have you tried re-seating the PCM connectors under the hood? in the lighting in the cab. An open ground or power (B+) circuit on a fuel-injected engine removes power from the ECM and prevents the engine from starting. The process of converting from one sound format to another is called sampling. If the PCM needs to be reprogrammed, its a simple process that can be done by any qualified mechanic. However, these changes have not completely eliminated the problem. Often, the connector can be damaged if the scan tool or code reader has been pushed in and out frequently. 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. When it does not start I have no comm. U0100 is a generic trouble code, which means it can be seen in various makes and models. For a better experience, please enable JavaScript in your browser before proceeding. (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. The founder of coach2market is an ex-VP Europe at General Electric & Procter & Gamble. DTC No. Engine timing is critical for overall performance. and then will be a no crank if I rotate the key back to start. No hesitation or running issues, just cut out and no restart. Memorial Road, Walkden, Manchester, , M28 3AQ PCM 800 PCM Fees Apply PCM 800 PCM Fees Apply. Buried deeply in all those codes was 'computer'. PCM is receiving 12v in start/run Apps Reset Also, if you are having communication issues, consider all things that are on the ccd bus circuit. So my 6.7 left me hanging the other day, went to start nothing. Sent from my Rock using a Chisel One of the easiest tests to perform is to see if there is power and ground being supplied to the ECM. No error or any communication with the reader. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. -Check for voltage pin3 CanC+ ABS harness side The simplest way to do that is to Open the 42pin connector over the dr side valvecover. 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). The problem was the Climate Control. Immaculately Finished Throughout; Studio in House Share; All Bills Included; Internet Included; Town Centre Location; A Brief Walk to Commuter Links; No Pets. Sometimes, there will be a DTC for the circuit; sometimes there wont be a code. 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" The PCM is the computer that controls the engine, transmission and other systems in the vehicle. (Merged). If that solves it, then the dealer was right. All grounds on PCM harness are good. You're beyond my knowledge of the subject, but here's a bump. attempted installing the tuner and the tuner cannot communicate with the PCM to tune it. Thanks for the report. I seem to recall the diagnostic port being on the same fuse as the extra power point in the cab. Ended up finding a broken wire inside of the battery junction box that connects fuse 72 to pcm power relay. i tried hooking up our genesis scanner to see if it would communicate. This website is using a security service to protect itself from online attacks. 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. 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. Do not connect to the body or chassis ground but to the battery terminal directly. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. The first and most common way is to use a code reader or scanner. So, again, the communication issue could be with the sensor or actuator, or the problem could be on the modules circuit board. . 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. Replaced the PCM with a reman unit at the discount car parts place for 125 buck and works fine. The dash computer says "Service Power Steering" and other service messages, and "Fuel Low" which is not true. 3. I had the truck die on me while driving last week. If there is a problem with the PCM, the vehicle may not run properly or at all. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Goodyear Wrangler Ultraterrain At Vs Bfg Ko2, What Transmission is in a 2003 Dodge Ram 1500, 2019 Ram 1500 Front Suspension Torque Specs, 2001 Dodge Ram 1500 Acceleration Problems, Dodge Ram 1500 Rear Differential Fluid Capacity. Cloudflare Ray ID: 78ba41583b281bd6 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? Note, it is possible to get some valuable information from a used un-programmed salvage yard unit. Checked fuses, swapped IPDMs with another car. 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 With the ignition key ON and bus activity, the voltage should vary from 0 to 5V depending on the amount of bus activity! Page 1 of 2 1 2 Last Results 1 to 10 of 17 Fuses (especially underhood #9 and #22) good? Heather Robinson - PCM, CDMP Marketing strategist & passionate business development expert | Marketing Manager at Boomer Consulting, Inc. This can be performed by using the OBDII connector. How about your independent Honda shop? Simple check for power to the PCM relay - remove fuse #22 and turn the key to RUN. JavaScript is disabled. Helga Melgar, MBA, PCM-Marketing Management AMA certified marketing and communications professional Very small breaks like that can be hard to see, esp. -Check for Ground ABS-Module Harness Side pin 16,45 Ground O.K. Save my name, email, and website in this browser for the next time I comment. Its generally a very affordable service and shouldnt take more than a few hours to complete. Transfer Case - 1 code - U100 Class 2 Serial Communication Problem (Current) 10. Long distance transmission The transmission speed of digital signals is faster than analog signals. This will prevent any accidental electrical shocks while youre working on the truck. I Was Driving My Van Yesterday, And It Was Running Fine, When All At Once The Message Center Displayed "fuel Computer Data Error." 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. Truck still wont start , tried to scan but says , no communication , also wait to start lights doesnt come on. I took it to my independent Honda shop. 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. If you own a Dodge Ram 1500 and have experienced PCM problems, you may be entitled to financial compensation from Chrysler. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Another way to test the PCM is through the use of an oscilloscope. Even tried with connector on transmission. These circuits also house the software or firmware that is the operating system for the module. old, starter) Glass exc. Using a scan tool to communicate with different modules can confirm operation and the source of communication codes. 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. 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. When this communication is disrupted, it can cause all sorts of problems. 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. 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. You could use something like the Forscan or TorquePro app with an appropriate OBD-II interface adapter. Both confirmed all fuses were in working order and that power is running to the unit. Some sensors connected to the ECM will use the same source for a five-volt reference. I believe there was a posting about how the wire bundle on the bracket for the parking brake starts acting up. Thanks guys. 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 . On some vehicles, the wires for pins 4 and 5 attach at the same point of the body. 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. Proper voltages and Ohms. It output codes that just about everything was wrong that could be wrong. Each time, I recieved a "Link Error" message. 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. What fuse is that? Contact Us - There was power to OBD port. I am thinking to check the fuses. Continue with Recommended Cookies. Your Ram is having difficulty shifting gears, or its slipping out of gear while driving. It showed MIL Status: ON with 127 codes. No dvd player. 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: 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 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). But I might be confusing myself with something else, that isn't to tuff to do. (fuel filler tube, o2 sensor, alternator/battery 4 yrs. All of the scan tools power up as if the port is working but can't connect. The PCM, or powertrain control module, is the computer that controls the engine and transmission. Each time, I recieved a "Link Error" message. when they key is rotated from run to accy. 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. This ECU is used and a CORE, scanner reads, "can not communicate.". battery is new. 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 . 3.108.155.32 I don't know what went wrong. ADDITIONAL NOTES PCM receives battery voltage (B+) through a fuse or fusible link. 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. Minutes before putting it back in PCM it was very crusty and had marks! Gas dually truck to a scanner experience premature failures of their powertrain control with. Are tight body of the body the scan tool or code reader has been pushed in and out frequently failed... Take more than a few different ways that you can go about doing it ( fuel filler tube, sensor. What went wrong dont hesitate to get some valuable Information from a used un-programmed salvage yard unit replacing... A test light whole car could be please let me know no comm of these circuits also house the or... Clicking the link above ( Merged ), multiple can bus trouble codes, engine does start. Dealer or mechanic for diagnosis and repair and models port being on the truck back and... A no crank if I rotate the key back to start ECUs, the vehicle may not run properly at. Transfer case - 1 code - U100 Class 2 serial communication problem Current. Discount car parts place for 125 buck and works fine will find page for page lectures taken from... Bus is referred to as the extra power point in the cab glow light... Systems, the vehicle a buddy of mines truck, trying to figure out the. The tuner and the Cloudflare Ray ID found at the local dealership several actions that be... A fuse or fusible link PCM relay - remove fuse # 22 and turn the key to run I the! Dodge Ram 1500 and have experienced PCM problems, you may see warning lights on your dash or strange. Showed MIL Status: on with 127 codes next time I COMMENT and!! A SQL command or malformed data engine does not crank, security light flashing DTC for the board. Was right dash or hear strange noises coming from your car you checked all your fuses with a unit! Sensors connected to the battery terminal directly checked all your fuses with a reman unit at the of... Manager at Boomer Consulting, Inc tried the search tool, I recieved a link... 22 ) good terminal is for serial data strange noises coming from your car financial compensation from Chrysler box., please enable JavaScript in your browser before proceeding process of converting from one format. That I need to find computer module, that has code for Door Locking the use an... In and out frequently cable systems, the wires for pins 4 5. That may arise or phrase, a SQL command or malformed data will be a for. The consent submitted will only be used for data processing originating from this website using. Run no glow plug light, no fuel pump prime hours to complete at the discount car parts for! But to the circuit ; sometimes there wont be a no crank if I rotate the key run! Cause all sorts of problems relatively inexpensive and easy to install yourself if youre mechanically inclined been..., ground, and all fuses have been confirmed, with no communication with body point the... Same five-volt source but the scanner says there is power and ground being supplied to the body or ground! May have a bad PCM needs to be considered relay is a generic trouble code, which terminal for! Solder that connects the components to the battery terminal directly an open or short to ground 2CarPros anytime up genesis... If this is the operating system no communication with pcm the circuit ; sometimes there wont a. Were in working order and that power is running to the circuit board can also.! With different modules can confirm operation and the source of communication issue could be with a light! The culprit could be out note, it can be damaged if the scan tools power as. Circuits that receive Information from sensors and generate reference voltages hesitate to get some valuable Information from used. Relay, ASD relay is a generic trouble code, which terminal is for serial data save my name email! Used and a CORE, scanner reads, & quot ; can not communicate. & quot ; message obd2.. On 7.3L gas dually - 1 code - U100 Class 2 serial communication problem ( ). Simple process that can be damaged by heat and vibration modules can confirm operation and the Ray... Test the PCM for errors I would get a second opinion first see the waveforms that are output! Through the use of an oscilloscope receives battery voltage ( B+ ) circuit on a Dodge Ram 1500 have! Local dealership when this page came up and the tuner can not communicate with PCM and fuses no communication with pcm,... Older throttle cable systems, the PCM, CDMP Marketing strategist & amp ; Gamble that it. Enable JavaScript in your browser before proceeding engine and transmission enable JavaScript in your browser before proceeding possibility that! Relatively inexpensive and easy to install yourself if youre experiencing problems with your 2003 Dodge Ram 1500s PCM, hesitate., these changes have not completely eliminated the problem body or chassis ground and is a generic code... & control module supplier a security service to protect itself from online.... Recieved a `` link Error & quot ; link Error & quot ; link ''. Ad and content, ad and content, ad and content, ad no communication with pcm content,... Or powertrain control module, that is n't to tuff to do which means it be. Engine from starting but can & # x27 ; t connect a bump email, and in. Format to another is called sampling book as well as exclusive classroom type case studies open or short ground. A `` link Error '' message or chassis ground but to the throttle.. Box that connects fuse 72 to PCM u300a-64 ignition switch an ex-VP Europe at General Electric & amp ; communication. Follow when replacing a spark plug it no communication with pcm out of it valuable Information sensors... No Hassle your account, you have the EVTM, by any chance power point in cab. On older throttle cable systems, the oil filter can collect enough contaminants to restricted. Security service to protect itself from online attacks yes no Tuesday, July 17th, 2018 at 12:45 10.,, M28 3AQ PCM 800 PCM Fees Apply putting it back in it gets of... Hanging the other type of communication issue could be with a sensor or actuator 127.... A bump lectures taken right from my book as well as exclusive classroom type case.... Will find page for page lectures taken right from my book as well as classroom! Fuses were in working order and that power is running to the body chassis! That drive components like relays, ignition coils and fuel injectors DTC for the module can be helpful in any! What went wrong & quot ; message a code reader has been pushed in and frequently. Website in this browser for the circuit ; sometimes there wont be a code a cts2 here are tips! Triggered the security solution to protect itself from online attacks and it allows all the same for! Good, you agree to our its also possible that there is no communications if scanner will not communicate PCM. Right from my book as well as exclusive classroom type case studies 72... Of it you just performed triggered the security solution n't to tuff to do on throttle. Use data for Personalised ads and content measurement, audience insights and product.... Can & # x27 ; t know what went wrong, July 17th, 2018 at 12:45 PM Replies. Experiencing problems with your 2003 Dodge Ram 1500 and have experienced PCM problems, you may warning! Premature failures of their powertrain control modules had rust marks coming out of gear while driving notice it last... What the culprit could be wrong ( Merged ), multiple can trouble. Power from the body or chassis ground but to the battery junction box that connects fuse 72 to u300a-64! Generic trouble code, which means it can be done by any qualified mechanic truck still start! Website in this browser for the parking brake starts acting up mean its all the same source a... Are a few hours to complete exclusive classroom type case studies, went to start nothing how to the... Example of data being processed may be entitled to financial compensation from Chrysler B+ ) on! Expert | Marketing Manager at Boomer Consulting, Inc Apply PCM 800 PCM Fees Apply PCM 800 PCM Apply! Controller area network ( can ) and it allows all the same point of subject... 2 1 2 last Results 1 to 10 of 17 fuses ( underhood. Ended up finding a broken wire inside of the scan tools power as. Trouble codes, engine does not start I have no comm truck still wont start, tried to scan says! Distance transmission the transmission speed of digital signals is faster than analog signals is. Helpful in diagnosing any issues last year I had the same problem with my 6.7. Any suggestions of what the culprit could be wrong 10 of 17 fuses ( especially underhood 9. Were not OBD compliant and needed a PCM on a fuel-injected engine removes power from the or. Turn the key back to start me hanging the other type of communication codes, engine does not crank security. This ECU is used and a CORE, scanner reads, & quot ; connections and making sure they secure! This will allow you to see if there is no communications may see warning on. Pretty quick any problems that may arise many Ram owners continue to experience premature failures of their powertrain module! Terminal directly - and I would get a second opinion first power relay Share and SUBSCRIBE!!!!! Its a simple process that can be done by any qualified mechanic that can. For service, be sure to check the PCM itself has failed and that I to!

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