Cleaned Intake. 1997 F250 SC 4x4, E4OD, 4.10 LS, Basically Stock, Relocated Block Heater Plug, External Trans Filter, Tru-Cool Max, I/C Mounted but not Plumbed. 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 They just didn't know what they were doing. The first thing I would check for a communication problem is the DLC fuse. Connecting an OBD-II scanner gives the code U0100 Lost Communication With ECM/PCM "A". I had the truck die on me while driving last week. Pin 16 is the positive voltage side being supplied to the ECM. First, check all of the connections to make sure they are secure. Proper voltages and Ohms. Go back under the hood and install fuse #22. in the lighting in the cab. I seem to recall the diagnostic port being on the same fuse as the extra power point in the cab. The latest problem seems to be that the PCM is not communicating with the trucks other systems. Note, it is possible to get some valuable information from a used un-programmed salvage yard unit. Cheers! If the PCM detects a short (excessive current flow)on the 5 volt reference circuit the PCM shuts down,won't communicate until the short is repaired.Many components use reference voltage from the PCM.Here's a quick way to see if that might be your problem.Turn the ignition "On" and backprobe the EBP sensor or peel . U0100 is a generic trouble code, which means it can be seen in various makes and models. 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. Has anyone run into this problem. I've tried reseating all the connectors on pcm nothing happened also check the park brake area everything seems tight and in-tack. I Have A 1996 Ford Windstar That Has Currently Done 233,000kms. Jump the plug by right battery starter turns. All stock The truck ran hard and strong for 8 thousand miles exactly.. And died. Even replaced the computer and still cannot connect. 5. It output codes that just about everything was wrong that could be wrong. 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. Also other lights go on periodcally brakes check fuel cap and there is nothing wrong - please help? If this is the case, you may need to take your truck to a dealer or mechanic for diagnosis and repair. Yes No Tuesday, July 17th, 2018 AT 12:45 PM 10 Replies ASEMASTER6371 EXPERT Good evening. Just because its red doesnt mean its all the same. First I have a 2002 Ford Windstar SE van, with a 3.8 liter motor. 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. I had no pcm communication with scanner, no tach and no WTS light. The engine runs erratically, or Rough idling/misfiring. *With the ignition key ON and bus activity (BA), the voltage should vary from 0 to 5V depending on the amount of bus activity! -Check for Ground ABS-Module Harness Side pin 16,45 Ground O.K. No communication with the PCM usually = the PCM has no power. If you repair the short in the sensor or harness, and maybe replace a fuse, the five-volt reference signal should return. . I Was Driving My Van Yesterday, And It Was Running Fine, When All At Once The Message Center Displayed "fuel Computer Data Error." ecm, pcm, bcm, tcm, gauges, and overhead console. Next, try resetting the PCM by disconnecting the battery for 30 seconds. On some vehicles, the wires for pins 4 and 5 attach at the same point of the body. Testing the ports on the obd connector everything seems to be correct. If your Dodge Ram 1500 isnt running as smoothly as it should be, it might be time to reset the PCM. Continue with Recommended Cookies. You can just see the break in the fuse, just off the left leg. 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: Ford: 00-1-2: Parking Brake Control Assembly Concerns: Ford: 00-12-2 (DTC) - P1635 And/Or P1639 Present After Powertrain Control Module ( PCM) Or Instrument Cluster Replacement. 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. 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 Helga Melgar, MBA, PCM-Marketing Management AMA certified marketing and communications professional 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! To start viewing messages, select the forum that you want to visit from the selection below. Scan tool will not communicate with pcm. One of the easiest tests to perform is to see if there is power and ground being supplied to the ECM. Monitors are ready. 219K views 4 years ago (Chapters 9, 10 and 11) The 5v Reference and Signal Circuit Quick Tests No communication with the engine computer (PCM), multiple CAN bus trouble codes, engine does not. Nice work, we are here to help, please use 2CarPros anytime. My Toyota dealer told me that about my ABS computer on my Tacoma. 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. This will allow you to see the waveforms that are being output by the PCM, which can be helpful in diagnosing any issues. In early model Rams, the PCM was known to fail prematurely. JavaScript is disabled. Thanks guys. Code U0100 stands for Lost Communication with ECM/PCM The powertrain control module (PCM) is the computer responsible for engine management. Here are some other symptoms that may indicate your Rams PCM has failed: The only mod that was installed on the truck was a cts2. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!Disclaimer:Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. 2022 MY - 4GE LTE / Wifi hotspot delete option, 2022 Ford Super Duty Order Tracking Thread. Please register or login to enable Dark Mode. Finally, its also possible that there is an issue with the trucks ECU (engine control unit). My engine light is on, but the dealer cannot read the codes. All of the scan tools power up as if the port is working but can't connect. Damage can occur to the solid-state circuitry inside, including microchips, transistors, resistors or capacitors. I came to the conclusion that PCM was bad. When this communication is disrupted, it can cause all sorts of problems. 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. When I pulled out the PCM it was very crusty and had rust marks coming out of it. It could be as simple as a coolant temperature sensor, or as complex as a mass airflow sensor. Used 2 different diagnostic tools, older Snap-on Verus and an Autel Elite, with no communication to either one. If youre experiencing the No Bus error message, its important to take your car to a qualified mechanic as soon as possible. Many Ram owners continue to experience premature failures of their powertrain control modules. Using a scan tool to communicate with different modules can confirm operation and the source of communication codes. Just follow these steps: On older throttle cable systems, the carburetor or fuel injection system reacted to the throttle angle. Is the Check Engine Light illuminated? No start. Has anyone ever had this problem? attempted installing the tuner and the tuner cannot communicate with the PCM to tune it. It monitors many different engine and transmission parameters and makes adjustments to ensure optimal performance. 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 If this is the case, you will need to replace it with a new one. Usually the female side of the connector is forced out of the back of the connector on the vehicle. But "appear" is the key word. 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. 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 Dec 22, 2022 (Edited) Hello, I have a 2007 Envoy Denali that I swapped a L92/6L80E/AWD transfer case from a 2008 Escalade. Do you have the EVTM, by any chance? will have to keep that in mine. 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. Once that all passes, you'll need to check for power at the PCM connector itself. battery is new. Took all 3 connectors at pcm out and blowed air through and sprayed W.D nothing. Test 3, which terminal is for serial data? Immaculately Finished Throughout; Studio in House Share; All Bills Included; Internet Included; Town Centre Location; A Brief Walk to Commuter Links; No Pets. Last year my truck got struck by lightning. The Dodge Ram 1500 is a half-ton pickup truck that was first introduced in 1981. I checked the dlc for power and ground and network voltage all passing. You could use something like the Forscan or TorquePro app with an appropriate OBD-II interface adapter. Transfer Case - 1 code - U100 Class 2 Serial Communication Problem (Current) 10. Don't know anything about the torque App so no help there. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. The PCM, or powertrain control module, is the computer that controls the engine and transmission. This will prevent any accidental electrical shocks while youre working on the truck. ' " It is triggered once there is a loss of communication between your PCM and a particular module. Hello everyone, Looking for some ideas on what I may be missing. 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. 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. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. Reconnect the negative battery cable and start up the truck to see if the problem has been fixed. Privacy Statement - JavaScript is disabled. Mar 31, 2021. I believe there was a posting about how the wire bundle on the bracket for the parking brake starts acting up. If there is high resistance in a module or part of the wiring harness it can bring down the network. 3. This should fit all Saab 9-3 from 2003-2007 and may fit up to 2011. These transistorized solid-state circuits can turn power off-and-on and even generate a pulse-width-modulated signal. 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. 94.5 and early 95 were not OBD compliant and needed a PCM flash upgrade to be so. Fourth, you have circuits that drive components like relays, ignition coils and fuel injectors. Its generally a very affordable service and shouldnt take more than a few hours to complete. And I would get a second opinion first. old, starter) Glass exc. SKREEM codes: PCM Status Failure ABS codes: Lost communication with ECM/PCM; Lost Communication with TCM; Implausible data; Implausible vehicle configuration; Original VIN mismatch / Missing I have pinned out the OBD Pin 2 to the engine harness and there is continuity. Here are some tips to follow when replacing a spark plug. 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. Recently the CEL came on. Heres why new filters are better. 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. 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. Its usually labeled PCM or ECU. Pull it out and wait a few minutes before putting it back in. 1. The following concerns may be caused by an improperly seated exhaust system. 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. What to do if the OBD II scanner doesnt communicate with the vehicle. They said they can replace it but they are not able to . This bus is referred to as the controller area network (CAN) and it allows all the modules to communicate . A tool used Digital Multimeter. Fuses (especially underhood #9 and #22) good? U0100. Manage Preferences - If there is a problem with the PCM, the vehicle may not run properly or at all. This can be performed by using the OBDII connector. Some have even had to replace the entire unit. What is so special about these classroom case studies? Maybe remove them, spray with WD40 and re-seat. I do have WMI installed, if i want to blame that wiring for this but then its fine for 6 months with that install. Seat module - driver 4 . The stock gauges quit working, check gauges, my cts2 lost communications with the truck, all wiring appeared fine. Checked wiring and fuses even swapped PCM with a used one that was good. agreed. The first and most common way is to use a code reader or scanner. No dvd player. 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. DTC Output from. In some cases, you may see warning lights on your dash or hear strange noises coming from your car. Picture of the wire that was repaired. If the PCM needs to be reprogrammed, its a simple process that can be done by any qualified mechanic. with the PCM, I can talk to everything else. Each time, I recieved a "Link Error" message. Rear power hatch not working. No communication with PCM If this is your first visit, be sure to check out the FAQ by clicking the link above. They will be able to diagnose the problem and get your car back up and running again. The engine will not start, or it starts and then stalls. It loses comm. Tailgate is rust free from the south. Checked fuses, swapped IPDMs with another car. 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. Thank you very much for helping me. Fixed 2004 Chevy Silverado 1500 no communication with modules but power to the obd2 port. Towed it into town started. I have a 2009 3500 with the auto 6 transmission. Also, an injector may not pulse, or an ignition coil might not fire. 2022 MY - 4GE LTE / Wifi hotspot delete option, 2022 Ford Super Duty Order Tracking Thread. Engine 2. No Communication Pcm is not communicating ZAHOORQURESHI MEMBER 2003 FORD WINDSTAR 176,000 MILES Pcm is not giving any information it seems it is not connected car dose missing and shakes Do you have the same problem? Your Samsung TV is able to play PCM files. Pcm is not giving any information it seems it is not connected car dose missing and shakes. [cmsmasters_row][cmsmasters_column data_width=1/1][cmsmasters_text], If the scan tool does not receive data from an OBD II vehicle. Whatever the original problem is, leaving it unfixed could cause cascading problems. With this reader I can only delete the error codes not reset them. odyclub.com is not in any way affiliated with Honda Motor Company. One of the easiest tests to perform is to see if there is power and ground being supplied to the ECM. Code reader cannot connect. If the WTS returns with it unplugged you now have to find which bad sensor is doing this (most often the EBP sensor). This ECU is used and a CORE, scanner reads, "can not communicate.". After several aggravating (expensive) attempts at resolving this issue I finally traded it back to another Ford dealer. If you own a 2003 Dodge Ram 1500, you may have noticed that your PCM (powertrain control module) is not communicating with your truck. 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. With these types of errors, you can communicate with a module, but the information from a sensor is missing or implausible. Currently at 83K. Customer Question. 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. You could try the local yunk yards, but Ford will have to flash the PCM with correct VIN. Many new parts. I notice it because last year I had the same problem with my 2014 6.7. For a better experience, please enable JavaScript in your browser before proceeding. But, a lot of the damage to an ECM comes from the connected components. No communication with the engine computer (PCM), multiple CAN bus trouble codes, engine does not crank, security light flashing. Archive - There was power to OBD port. all Acessories Off. Manage Settings Codes after cleared: instrument cluster uo100 lost communication to pcm u300a-64 ignition switch. On earlier vehicles my understanding is that they won't shut the vehicle down completely as they're not entirely electronically controlled. This is why it's always good to TEST (with an ohmmeter / continuity tester) fuses involved in an electrical issue. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. 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. Since its inception, the Ram 1500 has been plagued with PCM problems. How to Reset the Engine Control Module With No Hassle. Most ECMs are not plug and play parts. LOL. The process of converting from one sound format to another is called sampling. 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. All grounds on PCM harness are good. The ecm needed a reflash to get the truck back up and going. If you own a Dodge Ram 1500 and have experienced PCM problems, you may be entitled to financial compensation from Chrysler. I took it to my independent Honda shop. I meant to call this the Powertrain Control Module. They need to be checked. I get a code U0140 LOST COMMUNICATION WITH BODY. 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. If a module like an ECM cant communicate with the vehicle, sensor or a scan tool, it can be a challenging diagnostic problem. So, again, the communication issue could be with the sensor or actuator, or the problem could be on the modules circuit board. 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. Buried deeply in all those codes was 'computer'. Bill, TEST 5: Connect positive DMM lead to either bias pin 2 or 10 and connect negative lead to the ground terminal. Using the wrong oil is a common problem that causes a vehicles timing chain to wear even quicker. 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. There are a few possible causes of this problem, but the most likely one is a faulty ground wire. This can be easily fixed by checking all of the connections and making sure they are tight. Cookie Policy - Shutting off. Both confirmed all fuses were in working order and that power is running to the unit. Have you checked all your fuses with a test light? Engine timing is critical for overall performance. When it comes to testing a PCM on a Dodge, there are a few different ways that you can go about doing it. 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. 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. 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. Full Description. Also when driving the van the overdrive is still working, Thursday, June 11th, 2020 AT 1:44 PM Test 5, which terminal is bias terminal? Sienile said: That doesn't make any sense unless you told them something different than you've said here. I am thinking to check the fuses. not sure if its a wiring problem or if its the PCM itself. No Smokers. An example of data being processed may be a unique identifier stored in a cookie. 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 Pin 16 is the positive voltage side being supplied to the ECM. 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. cond. 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. Replaced the PCM with a reman unit at the discount car parts place for 125 buck and works fine. $294.90 . Have you been able to check codes with your OBDII scanner on your 2007 Ody before? 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. If anyone has any suggestions of what the culprit could be please let me know. Dec 20, 2014 Went for a state inspection to two shops and both stated no communication link with the OBD. Doing myself a disservice going 3.73 over 4.30 on 7.3L gas dually? If a module like an ECM can't communicate with the vehicle, sensor or a scan tool, it can be a challenging diagnostic problem. You may have to register before you can post: click the register link above to proceed. DTC U0100 stands for " Lost Communication with ECM/PCM 'A. -Check for voltage pin3 CanC+ ABS harness side It showed MIL Status: ON with 127 codes. Looking for some input from someone. Took to a mechanic. All of these circuits inside the module can be damaged by heat and vibration. In later model years, Dodge made a number of changes to try and improve the reliability of the PCM. 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 - Sent from my Rock using a Chisel Solution only worked for two .
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no communication with pcm