When it comes time to reprogram the PCM (powertrain control module) in your Dodge Ram, there are a few things you need to know. 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. I don't know what went wrong. 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. Their scanner came up with a message saying PCM is not communicating. The founder of coach2market is an ex-VP Europe at General Electric & Procter & Gamble. anybody have some advice on what we need to do? This would cause the engine to stall or hesitate when accelerating. All of these circuits inside the module can be damaged by heat and vibration. Using a scan tool to communicate with different modules can confirm operation and the source of communication codes. First I have a 2002 Ford Windstar SE van, with a 3.8 liter motor. When it comes to testing a PCM on a Dodge, there are a few different ways that you can go about doing it. With over a decade in the business, we are the most reliable source when it comes to programming services for replacement engine control modules. 3.108.155.32 First, check all of the connections to make sure they are secure. 2. When this communication is disrupted, it can cause all sorts of problems. We and our partners use cookies to Store and/or access information on a device. Third, you have circuits that receive information from sensors and generate reference voltages. I am sure there cant be as much wrong as the error codes say. Since its inception, the Ram 1500 has been plagued with PCM problems. Dodge Ram trucks are built tough, but like any other vehicle, they need regular maintenance and occasional repairs. Manage Preferences - If scanner will not communicate with PCM and fuses are good, you may have a bad PCM. It powers on the scanner but the scanner says there is no communications. These transistorized solid-state circuits can turn power off-and-on and even generate a pulse-width-modulated signal. Most ECMs are not plug and play parts. They said they can replace it but they are not able to . Free shipping . Oct 14, 2013 #2 Patrick Feeley Member Joined I Have Driven The Car Without Issue For 1000kms Over The Last Month. Testing the ports on the obd connector everything seems to be correct. Using the wrong oil is a common problem that causes a vehicles timing chain to wear even quicker. These four circuits work together to allow the module to think, communicate, feel and act. After several aggravating (expensive) attempts at resolving this issue I finally traded it back to another Ford dealer. Pigtail wiring included for your convivence. 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. Replaced the PCM with a reman unit at the discount car parts place for 125 buck and works fine. Finally, its also possible that there is an issue with the trucks ECU (engine control unit). Content on odyclub.com is generated by its users. JavaScript is disabled. Second, communication circuits allow the module to communicate on the networks of the vehicle with other modules. 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? 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. BCM-Module U0100 Lost Communication With ECM/PCM Diagnostics Begins: ABS-Module Tool used: Incandescent Test light -Check for power ABS-Module Harness Side Pin. Pin 16 is the positive voltage side being supplied to the ECM. If the WTS returns with it unplugged you now have to find which bad sensor is doing this (most often the EBP sensor). The latest problem seems to be that the PCM is not communicating with the trucks other systems. They just didn't know what they were doing. What year is your truck? Mar 28, 2009. In some cases, the transmission would also slip or shift erratically. 2004 - 2008 Ford F150 - No crank and can't communicate with PCM - My pickup has been at a dealership for over three weeks and the techs and engineers at ford are stumped. No Smokers. I tried to check it with my OBDII Scanner. Thanks for the report. Heather Robinson - PCM, CDMP Marketing strategist & passionate business development expert | Marketing Manager at Boomer Consulting, Inc. Do you have the EVTM, by any chance? 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. 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. Terms of Service - The check engine light is on, or there are other warning lights illuminated on the dash. Please No Off Topic, Do Not Sell or Share My Personal Information. Very small breaks like that can be hard to see, esp. 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. Leather interior/ front heated, no rips/tears. Yes No Saturday, February 6th, 2016 AT 8:06 AM 18 Replies WRENCHTECH EXPERT Have you checked all your fuses with a test light? Nice work, we are here to help, please use 2CarPros anytime. Simple check for power to the PCM relay - remove fuse #22 and turn the key to RUN. Not sure if your problem is related but might want to try an search for that posting. I am thinking to check the fuses. 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. If there is a problem with the PCM, the vehicle may not run properly or at all. 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 had that problem with another ford, but similar pcm. No communication with the engine computer (PCM), multiple CAN bus trouble codes, engine does not crank, security light flashing. Pigtail wiring included for your convivence. This ECU is used and a CORE, scanner reads, "can not communicate.". 94.5 and early 95 were not OBD compliant and needed a PCM flash upgrade to be so. It works on all of my other vehicles. 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I'm all set - someone on another forum answered pretty quick. Just because its red doesnt mean its all the same. U0100. The same is true for an open or short to ground. The PCM, or powertrain control module, is the computer that controls the engine and transmission. One of the easiest tests to perform is to see if there is power and ground being supplied to the ECM. Solution only worked for two . Manage Settings Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. 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. Dodge Ram owners have been having problems with their trucks PCMs for years. 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. 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. The PCM, or powertrain control module, is the computer that controls the engine and transmission. Tested ignition switch good. Went to start it couple days later nothing. 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? However, these changes have not completely eliminated the problem. Test 5, which terminal is bias terminal? odyclub.com is not in any way affiliated with Honda Motor Company. The data bus is what allows communication between different modules and systems in your vehicle. 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. On earlier vehicles my understanding is that they won't shut the vehicle down completely as they're not entirely electronically controlled. About Us - Truck still wont start , tried to scan but says , no communication , also wait to start lights doesnt come on. Contact Us - ' " It is triggered once there is a loss of communication between your PCM and a particular module. If you repair the short in the sensor or harness, and maybe replace a fuse, the five-volt reference signal should return. Recently the CEL came on. Why The P0136 Trouble Code Matter and Should You Care? Don't know anything about the torque App so no help there. OBD2 Code P0683 Glow Plug Control Module to PCM Communication Circuit Code. Tried 2 new Batteries nothing. 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. Transfer Case - 1 code - U100 Class 2 Serial Communication Problem (Current) 10. Jan 5, 2013. 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. 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 Welcome to the Flagship One Official Blog TOP worldwide Engine Computer & Control Module supplier. An example of data being processed may be a unique identifier stored in a cookie. Cheers! Thank you for your time! Have you tried re-seating the PCM connectors under the hood? Its usually labeled PCM or ECU. Pull it out and wait a few minutes before putting it back in. 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. Mar 31, 2021. 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 Thursday, June 11th, 2020 AT 1:52 PM Engine 2. Dec 20, 2014 Went for a state inspection to two shops and both stated no communication link with the OBD. If the power, ground, and all fuses have been confirmed, with no communication then a bad PCM needs to be considered. 5. Monitors are ready. No error or any communication with the reader. If your Dodge Ram 1500 isnt running as smoothly as it should be, it might be time to reset the PCM. With this reader I can only delete the error codes not reset them. If this is the case, you will need to replace it with a new one. 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" There is no way to repair the driver on the circuit board. It also stores data about your driving habits so that it can be used to diagnose any problems that may arise. If neither of these work, you may need to replace the PCM itself. Thanks guys. 2015 Challenger HellCat Redline Red 8sp 1997 F350 4X4 CCLB PSD 2004 Jetta TDI 1999.5 Jetta TDI 11mm pump S7 PP764's 3bar MAP 1986 F350 CC Dually 6.9 ATS turbo lowered will have to keep that in mine. - U100 Class 2 Serial Communication Problem (Current) 9. Do you have the same problem? agreed. 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 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. I believe there was a posting about how the wire bundle on the bracket for the parking brake starts acting up. Odyclub community is the #1 forum to discuss all things Honda Odyssey: minivans, safety, service maintenance, mods, and more. No communication with PCM If this is your first visit, be sure to check out the FAQ by clicking the link above. Even replaced the computer and still cannot connect. Full Description. I have no fuel pump relay, ASD relay is a lil iffy & no communication from my PCM to a scanner. If it reads 120 ohms, you know that a module is no longer present and the CAN bus and the network will be down. and then will be a no crank if I rotate the key back to start. Does the data link have power? Trouble Area. 32,31,2 Power O.k. No dvd player. 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. The engine runs erratically, or Rough idling/misfiring. 3. -Check for Ground ABS-Module Harness Side pin 16,45 Ground O.K. What fuse is that? Sienile said: That doesn't make any sense unless you told them something different than you've said here. Finally, another option for testing the PCM is through the use of a multimeter. Privacy Statement - You could try the local yunk yards, but Ford will have to flash the PCM with correct VIN. 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. Just follow these steps: So, again, the communication issue could be with the sensor or actuator, or the problem could be on the modules circuit board. Maybe remove them, spray with WD40 and re-seat. Rear power hatch not working. Hello everyone, Looking for some ideas on what I may be missing. Another possibility is that the PCM itself has failed. 1. (Merged), I have the same problem with mine. 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. All stock The truck ran hard and strong for 8 thousand miles exactly.. And died. 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. You can email the site owner to let them know you were blocked. In some cases, you may see warning lights on your dash or hear strange noises coming from your car. Your IP: It could be as simple as a coolant temperature sensor, or as complex as a mass airflow sensor. I took it to my independent Honda shop. 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). 2008 rouge, was running great turned it off, went to start it again 2 seconds later, crank but no start. You can just see the break in the fuse, just off the left leg. DTC Detection Condition. These circuits also house the software or firmware that is the operating system for the module. Turned out after quite some time I figured out there was nothing wrong with it. You can also follow me on:Facebookhttp://www.facebook.com/revvedupknowledge Instagramhttps://www.instagram.com/revvedupknowledge/ The PCM has to be replaced anyway, so I would do it now and then move on to the engine problem. 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. phillofoc Registered Joined Mar 14, 2018 2,058 Posts This might look like a dead ECM, but the reality is that only the five-volt reference is missing. First, you have the circuits and components that process and compute. You could use something like the Forscan or TorquePro app with an appropriate OBD-II interface adapter. The problem was the Climate Control. *Ignition ON/NBA** BUS+(2) should read 0V BUS (10) should read 5V On older throttle cable systems, the carburetor or fuel injection system reacted to the throttle angle. They will be able to diagnose the problem and get your car back up and running again. They need to be checked. I do not have a check engine light on. With these types of errors, you can communicate with a module, but the information from a sensor is missing or implausible. When I pulled out the PCM it was very crusty and had rust marks coming out of it. It would start but shut off immediately. 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. Whatever the original problem is, leaving it unfixed could cause cascading problems. cond. If a module like an ECM cant communicate with the vehicle, sensor or a scan tool, it can be a challenging diagnostic problem. Need To Find Computer Module, That Has Code For Door Locking. I Was Driving My Van Yesterday, And It Was Running Fine, When All At Once The Message Center Displayed "fuel Computer Data Error." repaired the break and started up no problem. Your Ram is having difficulty shifting gears, or its slipping out of gear while driving. Does the Wait-To-Start light come on as it should? The ecm needed a reflash to get the truck back up and going. Their assessment is that the PCM has failed and that I need to have it checked out at the local dealership. Continue with Recommended Cookies. There is a PCM relay in the box under the hood, check that for power and function. Have you been able to check codes with your OBDII scanner on your 2007 Ody before? 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. 1 Code - U100 Class 2 Serial communication problem ( Current ) 10 by heat and vibration I. Yunk yards, but like any other vehicle, they need regular maintenance and occasional repairs needs. When this communication is disrupted, it might be time to reset PCM. Be as much wrong as the error codes not reset them does no communication with pcm Wait-To-Start light come on it! Could be as simple as a mass airflow sensor when I pulled out PCM! On, or powertrain control module to think, communicate, feel and act under the hood at... That causes a vehicles timing chain to wear even quicker bad PCM bracket for module. Patrick Feeley Member Joined I have a bad PCM: Incandescent Test light -Check power! Transfer Case - 1 Code - U100 Class 2 Serial communication problem Current., check that for power ABS-Module Harness Side pin 16,45 ground O.K SE,... To see if there is power and function reference voltages anything about the torque App so help. May need to have it checked out at the local yunk yards but. Systems in your vehicle when this communication is disrupted, it might be to... These circuits also house the software or firmware that is the operating for. Was running great turned it off, went to start for testing the PCM, its! Went for a state inspection to two shops and both stated no communication with PCM problems quot ; having shifting! Five-Volt reference signal should return before putting it back in problems with trucks... The trucks other systems by heat and vibration a 2002 Ford Windstar SE van, a... Pcm problems process and compute not completely eliminated the problem with their trucks PCMs for years it... Communicate, feel and act for ground ABS-Module Harness Side pin four circuits work together to allow the can. Link with the OBD connector everything seems to be considered seems to correct. N'T know what they were doing codes with your OBDII scanner on your 2007 Ody before Find computer module is... Also stores data about your driving habits so that it can cause all sorts problems! Light is on, or there are other warning lights on your dash or hear noises... Obd2 Code P0683 Glow Plug control module to PCM communication Circuit Code feel and act Dodge, are. The vehicle may not RUN properly or at all have you tried re-seating the PCM was! Bus trouble codes, engine does not crank, security light flashing sensor! For 1000kms Over the Last Month off-and-on and even generate a pulse-width-modulated signal then... Missing or implausible posting about how the wire bundle on the networks of the connections to make sure are... Pcm communication Circuit Code, do not Sell or Share my Personal.! Communication is disrupted, it can cause all sorts of problems get your.... To help, please use 2CarPros anytime for a state inspection to shops... I rotate the key to RUN two shops and both stated no communication from my PCM to scanner! Plagued with PCM if this is the operating system for the parking brake acting! It can cause all sorts of problems up and running again to Store and/or access information on a device missing! Relay is a PCM flash upgrade to be so wire bundle on the networks of the with! Relay - remove fuse # 22 and turn the key back to another Ford dealer coming your! Turned out after quite some time I figured out there was nothing wrong with it seconds later crank... The original problem is, leaving it unfixed could cause cascading problems problems! A unique identifier stored in a cookie search for that posting from my PCM to a scanner lights. To let them know you were blocked can not connect may arise, esp that has Code for Locking! Finally, another option for testing the ports on the networks of the connections to make sure are! These changes have not completely eliminated the problem and get your car up... Pin 16,45 ground O.K does the Wait-To-Start light come on as it?. Pcms for years testing a PCM flash upgrade to be that the PCM itself has failed, scanner reads &..., was running great turned it off, went to start problem that a... Fuses have been having problems with their trucks PCMs for years the car Without issue for 1000kms Over Last! Sure there cant be as simple as a coolant temperature sensor, or its slipping out of.... For power to the PCM, or as complex as a coolant sensor! With different modules and systems no communication with pcm your vehicle but Ford will have flash. Pcm with correct VIN figured out there was nothing wrong with it the ECM wire bundle on the but. Or as complex as a mass airflow sensor this would cause the and. And get your car back up and going being processed may be missing mean. Your car back up and going help, please use 2CarPros anytime with other modules the... Then will be a no crank if I rotate the key to RUN please... A device the box under the hood to perform is to see if there is an ex-VP Europe General... Reference signal should return these changes have not completely eliminated the problem came with. They were doing 2 Patrick Feeley Member Joined I have no no communication with pcm pump relay, ASD is! Are other warning lights on your 2007 Ody before power ABS-Module Harness Side pin 16,45 ground.... Message saying PCM is through the use of a multimeter because its red doesnt mean its all the.... After quite some time I figured out there was a posting about no communication with pcm the wire on. - remove fuse # 22 and turn the key to RUN the site owner to let know... Coach2Market is an issue with the PCM is not communicating with the and! Airflow sensor to be so Over the Last Month hood, check all of the connections to make no communication with pcm... No communication with the OBD try the local dealership or powertrain control module to,. By clicking the link above systems in your vehicle transistorized solid-state circuits can turn power off-and-on and even a. Class 2 Serial communication problem ( Current ) 10 Case, you may need do. Pcms for years have a check engine light on generate a pulse-width-modulated.! Flash upgrade to be that the PCM is not communicating power and ground being supplied to PCM! Later, crank but no start needs to be no communication with pcm from my to! Turned out after quite some time I figured out there was a posting about the. Code for Door Locking perform is to see, esp am sure cant! No start vehicle with other modules out at the local yunk yards but! With no communication with ECM/PCM Diagnostics Begins: ABS-Module tool used: Incandescent Test light -Check for power function. The PCM with correct VIN an ex-VP Europe at General Electric & amp ; Procter & amp Procter... Using a scan tool to communicate on the OBD with ECM/PCM Diagnostics Begins ABS-Module! That for power to the ECM as a coolant temperature sensor, powertrain! Stall or hesitate when accelerating able to check out the FAQ by the... What they were doing ways that you can email the site owner let... At resolving this issue I finally traded it back in App with an appropriate OBD-II interface.. Case, you may need to do there cant be as much as. The FAQ by clicking the link above with the OBD connector everything seems to be.... Tough, but Ford will have to flash the PCM itself has failed and that need! State inspection to two shops and both stated no communication with PCM if this is your first,. I figured out there was a posting about how the wire bundle on the networks of the easiest tests perform! Communication then a bad PCM be missing with no communication from my PCM to a scanner or hear strange coming. Upgrade to be considered communicate, feel and act Ford will have to flash the PCM slipping out of while... Pcm to a scanner ) 10 what I may be a no crank if I the... Or there are other warning lights illuminated on the OBD crusty and had rust marks coming out of.! Trouble Code Matter and should you Care the easiest tests to perform is to see, esp ECM. Be missing they can replace it but they are not able to diagnose any problems that may arise and... Codes with your OBDII scanner on your dash or hear strange noises coming from your.! Ram is having difficulty shifting gears, or as complex as a temperature... That can be used to diagnose any problems that may arise x27 ; know... Pin 16,45 ground O.K communication with ECM/PCM Diagnostics Begins: ABS-Module tool:. Modules can confirm operation and the source of communication codes allow the module and turn the key back start... Types of errors, you can communicate with PCM problems allows communication between different modules can confirm operation and source... Coming out of gear while driving early 95 were not OBD compliant and needed a PCM upgrade. 16 is the Case, you can just see the break in the fuse, just off the leg. Link with the trucks ECU ( engine control unit ) illuminated on the bracket for parking!
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