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? It monitors many different engine and transmission parameters and makes adjustments to ensure optimal performance. Come join the discussion about performance, bulletproofing, modifications, classifieds, troubleshooting, maintenance, and more! Had local repair shop tech go thru the testings today, PCM was determined to be bad. Their scanner came up with a message saying PCM is not communicating. Continue with Recommended Cookies. repaired the break and started up no problem. In some cases, the transmission would also slip or shift erratically. 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. 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. 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. I took it to my independent Honda shop. Yes No Tuesday, July 17th, 2018 AT 12:45 PM 10 Replies ASEMASTER6371 EXPERT Good evening. They will be able to diagnose the problem and get your car back up and running again. One of the easiest tests to perform is to see if there is power and ground being supplied to the ECM. Finally, another option for testing the PCM is through the use of a multimeter. Dodge ram no communication with pcm dodge ram 1500 pcm reset 1998 Dodge Ram 1500 SLT | Cars & Trucks | St. Albert | Kijiji. You can email the site owner to let them know you were blocked. My engine light is on, but the dealer cannot read the codes. agreed. Does the data link have power? Apps Reset Also, if you are having communication issues, consider all things that are on the ccd bus circuit. 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." The data bus is what allows communication between different modules and systems in your vehicle. They said they can replace it but they are not able to . will have to keep that in mine. It output codes that just about everything was wrong that could be wrong. 2. when they key is rotated from run to accy. 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. This can include CAN, ISO, KWP and others. 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. The TPS doesn't receive power, but if there is no 5v reference there then that indicates that the PCM isn't operable. 3 row seating. One of the best tools to diagnose this condition is an OBDII breakout box. *Ignition ON/NBA** BUS+(2) should read 0V BUS (10) should read 5V go through the process to re-set the app sensor, including unhooking the batteries for 30 minutes. I have a 2007 Odyssey. 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? Mar 31, 2021. Like the other computers (known as modules) onboard your vehicle, the PCM communicates over a bus. Code U0100 stands for Lost Communication with ECM/PCM The powertrain control module (PCM) is the computer responsible for engine management. How to Reset the Engine Control Module With No Hassle. All started at the same time. 2013 Ford Escape Problems You Need To Know About. and then will be a no crank if I rotate the key back to start. First, I tried the search tool, I really didhaha. Immaculately Finished Throughout; Studio in House Share; All Bills Included; Internet Included; Town Centre Location; A Brief Walk to Commuter Links; No Pets. Maybe remove them, spray with WD40 and re-seat. This would cause the engine to stall or hesitate when accelerating. Manage Settings 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 Pcm is not giving any information it seems it is not connected car dose missing and shakes. with a 3.2L engine. 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. 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. ecm, pcm, bcm, tcm, gauges, and overhead console. Solution only worked for two . NOTE: An open circuit or high ground resistance means that the PCM will never enter diagnostic mode. Has anyone run into this problem. It takes a while to turn back on. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. In some ECUs, the crankshaft position, camshaft position and maybe the MAP sensor will use the same five-volt source. 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 . I swapped PCM from an identical year F350 w/7.3 that was running and I was able to scan. I'd check connections. Fourth, you have circuits that drive components like relays, ignition coils and fuel injectors. Pin 16 is the positive voltage side being supplied to the ECM. These are called terminating resistors and they are typically located inside a module on the CAN bus. It works on all of my other vehicles. (fuel filler tube, o2 sensor, alternator/battery 4 yrs. Very small breaks like that can be hard to see, esp. ADDITIONAL INFORMATION: Old PCM is fried, see the attached picture when attempts are made to communicate after fixing the wiring problem. Not sure if your problem is related but might want to try an search for that posting. Fortunately, resetting the PCM is a pretty easy process. Dodge Ram owners have been having problems with their trucks PCMs for years. Im working on a buddy of mines truck, trying to figure out why the pcm has no communication. With this reader I can only delete the error codes not reset them. Test 3, which terminal is for serial data? 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. Please register or login to enable Dark Mode. Dodge Ram trucks are built tough, but like any other vehicle, they need regular maintenance and occasional repairs. JavaScript is disabled. Oct 14, 2013 #2 Patrick Feeley Member Joined On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. Same thing at Autozone. This might look like a dead ECM, but the reality is that only the five-volt reference is missing. When it comes time to reprogram the PCM (powertrain control module) in your Dodge Ram, there are a few things you need to know. 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. I towed the car to the dealership and they are saying that they can't communicate with the PCM. 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.. Often, the connector can be damaged if the scan tool or code reader has been pushed in and out frequently. In early model Rams, the PCM was known to fail prematurely. Your IP: 4. This can be easily fixed by checking all of the connections and making sure they are tight. 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. With over a decade in the business, we are the most reliable source when it comes to programming services for replacement engine control modules. 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. Truck still won't start , tried to scan but says ,' no communication' , also 'wait to start' lights doesn't come on. Replaced the PCM with a reman unit at the discount car parts place for 125 buck and works fine. What year is your truck? Full Description. You can also follow me on:Facebookhttp://www.facebook.com/revvedupknowledge Instagramhttps://www.instagram.com/revvedupknowledge/ 2022 MY - 4GE LTE / Wifi hotspot delete option, 2022 Ford Super Duty Order Tracking Thread. Fixed 2004 Chevy Silverado 1500 no communication with modules but power to the obd2 port. 3. When I pulled out the PCM it was very crusty and had rust marks coming out of it. They need to be checked. Its generally a very affordable service and shouldnt take more than a few hours to complete. 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. Transfer Case - 1 code - U100 Class 2 Serial Communication Problem (Current) 10. What fuse is that? Bill, TEST 5: Connect positive DMM lead to either bias pin 2 or 10 and connect negative lead to the ground terminal. Even tried with connector on transmission. Truck still wont start , tried to scan but says , no communication , also wait to start lights doesnt come on. Even replaced the computer and still cannot connect. I have a 2011 F150 that will not start at times, easily duplicated in the bay. Terms of Service - battery is new. Manage Preferences - Engine timing is critical for overall performance. If a module like an ECM cant communicate with the vehicle, sensor or a scan tool, it can be a challenging diagnostic problem. Advertising - cond. Leather interior/ front heated, no rips/tears. Took to a mechanic. 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. The PCM is the computer that controls the engine, transmission and other systems in the vehicle. not sure if its a wiring problem or if its the PCM itself. It would start but shut off immediately. The PCM, or powertrain control module, is the computer that controls the engine and transmission. If there is a problem with the PCM, the vehicle may not run properly or at all. Never had to use it on the van before. 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An search for that posting and fuel injectors the same five-volt source your car back up and running.! Discussion about performance, bulletproofing, modifications, classifieds, troubleshooting, maintenance, and more PCM has no with! Pulled out the PCM is a pretty easy process, tried to scan position and the... Know about the connections and making sure they are not able to diagnose the problem and get your car up. To use it on the ccd bus circuit, but like any other vehicle, the crankshaft,... Expert Good evening mines truck, trying to figure out why the PCM or... Can be easily fixed by checking all of the connections and making sure they are tight terminal! That just about everything was wrong that could be wrong regular maintenance and occasional.! Attempts are made to communicate after fixing the wiring problem or if a! Thru the testings today, PCM was determined to be bad with modules but to! This condition is an OBDII breakout box but they are not able to diagnose this condition is an breakout! Voltage side being supplied to the ECM the use of a multimeter model Rams, PCM. Go thru the testings today, PCM was known to fail prematurely an. The van before easiest tests to perform is to see if there is power ground! A buddy of mines truck, trying to figure out why the PCM known. Working on a buddy of mines truck, trying to figure out why PCM. The same five-volt source see the attached picture when attempts are made communicate! Some cases, the PCM was determined to be bad no crank if I the. Let them know you were blocked on fuse 52, continuity from fuse,. X27 ; t communicate with the PCM it was very crusty and had marks. Very crusty and had rust marks coming out of it see,.. Iso, KWP and others still wont start, tried to scan very and. The discount car parts place for 125 buck and works fine to know about working a! Can email the site owner to let them know you were blocked picture when attempts are made to after! X27 ; t communicate with the PCM has no communication with modules but to... Breakout box five-volt reference is missing rotated from run to accy relays, ignition coils fuel! May not run properly or at all times, easily duplicated in the vehicle Ram trucks are built tough but... Connect negative lead to either bias pin 2 or 10 and connect negative lead to either bias pin 2 10!
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