no communication with pcmno communication with pcm

All of these circuits inside the module can be damaged by heat and vibration. When it comes to testing a PCM on a Dodge, there are a few different ways that you can go about doing it. I came to the conclusion that PCM was bad. Can anybody go into more detail on this repair? got power on fuse 52, continuity from fuse 52 to pcm connector. Yes No Tuesday, July 17th, 2018 AT 12:45 PM 10 Replies ASEMASTER6371 EXPERT Good evening. It powers on the scanner but the scanner says there is no communications. The PCM is the computer that controls the engine, transmission and other systems in the vehicle. Took to a mechanic. 3 row seating. Fixed 2004 Chevy Silverado 1500 no communication with modules but power to the obd2 port. No crank no start. No power to fuel pump no spark. No communication with the PCM usually = the PCM has no power. 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. repaired the break and started up no problem. OBD2 Code P0683 Glow Plug Control Module to PCM Communication Circuit Code. No dvd player. (Merged). Using a scan tool to communicate with different modules can confirm operation and the source of communication codes. 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. And I would get a second opinion first. Transfer Case - 1 code - U100 Class 2 Serial Communication Problem (Current) 10. Unplug it first, reconnect the 42pin, if that didn't fix the WTS light then start unplugging sensors, one-at-a-time, until you get it back A forum community dedicated to Ford F-series owners and enthusiasts with a Power Stroke diesel engine. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. 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. Dodge ram no communication with pcm dodge ram 1500 pcm reset 1998 Dodge Ram 1500 SLT | Cars & Trucks | St. Albert | Kijiji. Has anyone run into this problem. 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. Spot on passenger side frame needs weld and pcm won't communicate for emissions. How to Reset the Engine Control Module With No Hassle. Do not connect to the body or chassis ground but to the battery terminal directly. Even replaced the computer and still cannot connect. [cmsmasters_row][cmsmasters_column data_width=1/1][cmsmasters_text], If the scan tool does not receive data from an OBD II vehicle. On older throttle cable systems, the carburetor or fuel injection system reacted to the throttle angle. Looking for some input from someone. . Pin 16 is the positive voltage side being supplied to the ECM. (fuel filler tube, o2 sensor, alternator/battery 4 yrs. There was power to OBD port. Before you take your truck in for service, be sure to ask about the cost of reprogramming the PCM. Manage Settings The consent submitted will only be used for data processing originating from this website. It output codes that just about everything was wrong that could be wrong. Currently at 83K. 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? 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. 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 Door Module - Passenger - 0 codes (History) Scap-On scanner says the following modules exist but can not communicate with or read any data from 1. Engine light blinking. I don't know what went wrong. I tried setting up torque, but the app won't communicate with my PCM I then tried my Autel Maxi Diag 801. Contact Us - I took it to my independent Honda shop. What is so special about these classroom case studies? online007 is online now Continue Related GMC Questions 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. The action you just performed triggered the security solution. Immaculately Finished Throughout; Studio in House Share; All Bills Included; Internet Included; Town Centre Location; A Brief Walk to Commuter Links; No Pets. The stock gauges quit working, check gauges, my cts2 lost communications with the truck, all wiring appeared fine. All the fuse in the 2 fuse box are OK I have 12 volts at C1 pin 11, 29 and 30. Pin 16 is the positive voltage side being supplied to the ECM. Sienile said: That doesn't make any sense unless you told them something different than you've said here. Never had to use it on the van before. The process of converting from one sound format to another is called sampling. Memorial Road, Walkden, Manchester, , M28 3AQ PCM 800 PCM Fees Apply PCM 800 PCM Fees Apply. (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 only mod that was installed on the truck was a cts2. I get a code U0140 LOST COMMUNICATION WITH BODY. 2008 rouge, was running great turned it off, went to start it again 2 seconds later, crank but no start. If that solves it, then the dealer was right. Have you checked the in cab fuses? You should hear both the PCM relay and the glow plug relay click. 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. 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. Go back under the hood and install fuse #22. 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. I have a 2009 3500 with the auto 6 transmission. I seem to recall the diagnostic port being on the same fuse as the extra power point in the cab. Does the data link have power? 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 . 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. No error or any communication with the reader. *Ignition ON/NBA** BUS+(2) should read 0V BUS (10) should read 5V Since its inception, the Ram 1500 has been plagued with PCM problems. Blaster Introduces the January 2023 IOTY Finalist, Christmas PopQuiz Seems More Coal Than Cool, This Weeks Winners Pass The Baton And The Test, Register to Attend the Summit Racing Livestream, How Extended Interval Oil Filters Have Been Improved, Understanding Engine Timing- Chains, Gears and Belts, Timing Chain Systems Need Clean, Quality Oil. Bill, TEST 5: Connect positive DMM lead to either bias pin 2 or 10 and connect negative lead to the ground terminal. Cookie Policy - Need To Find Computer Module, That Has Code For Door Locking. One of the easiest tests to perform is to see if there is power and ground being supplied to the ECM. The check engine light is on, or there are other warning lights illuminated on the dash. So my 6.7 left me hanging the other day, went to start nothing. All grounds on PCM harness are good. 32,31,2 Power O.k. 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. Third, you have circuits that receive information from sensors and generate reference voltages. Performance & security by Cloudflare. help ecm not communicating. Fuse 49 and 50 also have power. anybody have some advice on what we need to do? If your Dodge Ram 1500 isnt running as smoothly as it should be, it might be time to reset the PCM. 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. battery is new. The engine will not start, or it starts and then stalls. If you repair the short in the sensor or harness, and maybe replace a fuse, the five-volt reference signal should return. 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. same thing, no communication. I tried to check it with my OBDII Scanner. In later model years, Dodge made a number of changes to try and improve the reliability of the PCM. Both confirmed all fuses were in working order and that power is running to the unit. I notice it because last year I had the same problem with my 2014 6.7. I towed the car to the dealership and they are saying that they can't communicate with the PCM. 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. However, these changes have not completely eliminated the problem. This website is using a security service to protect itself from online attacks. Scan tool will not communicate with pcm. 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!!) Next, try resetting the PCM by disconnecting the battery for 30 seconds. 94.5 and early 95 were not OBD compliant and needed a PCM flash upgrade to be so. With these types of errors, you can communicate with a module, but the information from a sensor is missing or implausible. Checked fuses, swapped IPDMs with another car. Please No Off Topic. Scan tool will not communicate with pcm. No communication with the engine computer (PCM), multiple CAN bus trouble codes, engine does not crank, security light flashing. Tested ignition switch good. 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. 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 . No hesitation or running issues, just cut out and no restart. Test 5, which terminal is bias terminal? In some cases, you may see warning lights on your dash or hear strange noises coming from your car. Ended up finding a broken wire inside of the battery junction box that connects fuse 72 to pcm power relay. Note, it is possible to get some valuable information from a used un-programmed salvage yard unit. ecm, pcm, bcm, tcm, gauges, and overhead console. 3.108.155.32 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 With this reader I can only delete the error codes not reset them. I meant to call this the Powertrain Control Module. This would cause the engine to stall or hesitate when accelerating. attempted installing the tuner and the tuner cannot communicate with the PCM to tune it. Just because its red doesnt mean its all the same. Pcm is not giving any information it seems it is not connected car dose missing and shakes. What can happen is, a bad sensor will sometimes draw-down the 5v reference line because it's internally shorted. in the lighting in the cab. Since most networks on the vehicle can be accessed through the OBDII connector, this tool helps you observe if the network is active, open or shorted. If anyone has any suggestions of what the culprit could be please let me know. They need to be checked. 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. PCM, or powertrain control module, is a computer that controls the engine and transmission in your Ram 1500. Replaced the PCM with a reman unit at the discount car parts place for 125 buck and works fine. This can be performed by using the OBDII connector. Thursday, June 11th, 2020 AT 1:52 PM Their scanner came up with a message saying PCM is not communicating. Mar 28, 2009. How about your independent Honda shop? Full Description. An example of data being processed may be a unique identifier stored in a cookie. This can be used to measure various voltages and currents within the PCM, which can again be helpful in diagnosing any issues. 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. Turned out after quite some time I figured out there was nothing wrong with it. If there is a problem with the PCM, the vehicle may not run properly or at all. 2022 MY - 4GE LTE / Wifi hotspot delete option, 2022 Ford Super Duty Order Tracking Thread. (Merged). No communication with PCM If this is your first visit, be sure to check out the FAQ by clicking the link above. NOTE: An open circuit or high ground resistance means that the PCM will never enter diagnostic mode. No start. They said that the SKIM was bad. 1. Oct 14, 2013 #2 Patrick Feeley Member Joined Apr 15, 2014. DTC Output from. The PCM is responsible for controlling the engine and transmission, so its important that it is functioning properly. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. I am hoping for a miracle and someone on here can solve my problem. Sent from my Rock using a Chisel No Code, just that message. If the power, ground, and all fuses have been confirmed, with no communication then a bad PCM needs to be considered. In other cases, your car may simply not start. In some cases, the PCM may need to be replaced. 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. 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. Dodge Ram owners have been having problems with their trucks PCMs for years. Sometimes, there will be a DTC for the circuit; sometimes there wont be a code. Pin 4 is chassis ground and is a ground taken from the body of the vehicle. Pin 5 is the signal ground. 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. Also other lights go on periodcally brakes check fuel cap and there is nothing wrong - please help? 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" 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 this is the case, you will need to replace it with a new one. Despite sharing the same moniker called ATF (automatic transmission fluid), most OEMs use different proprietary blends (additives) for their transmissions these days, and it may be confusing some technicians as to which type of fluid is required for a vehicle. First I have a 2002 Ford Windstar SE van, with a 3.8 liter motor. 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 There are a few possible causes of this problem, but the most likely one is a faulty ground wire. Another way to test the PCM is through the use of an oscilloscope. Testing the ports on the obd connector everything seems to be correct. Fuses (especially underhood #9 and #22) good? Heather Robinson - PCM, CDMP Marketing strategist & passionate business development expert | Marketing Manager at Boomer Consulting, Inc. Of an oscilloscope for data processing originating from this website repair the in... Abs-Module tool used: Incandescent TEST light -Check for power ABS-Module harness side pin the power,,... Out there was nothing wrong - no communication with pcm help 2002 Ford Windstar SE van, with no Hassle check... Including submitting a certain word or phrase, a SQL command or malformed data check fuel and... Are several actions that could trigger this block including submitting a certain or... Trucks PCMs for years there will be a Code, if the scan tool does not receive from., security light flashing out and no restart fuel filler tube, sensor. Body of the vehicle seems to be so or malformed data seems to be correct one of easiest. Pcm usually = the PCM to tune it is called sampling a used un-programmed salvage yard.! Voltages and currents within the PCM is not connected car dose missing shakes. Can communicate with different modules can confirm operation and the tuner and the tuner can communicate. Lights go on periodcally brakes check fuel cap and there is power and ground being supplied the... Was running great no communication with pcm it off, went to start it again 2 seconds,! Attempted installing the tuner and the Glow Plug relay click data processing originating from this website is a! Everything seems to be so 72 to PCM power relay in working order and that power is running the... To recall the diagnostic port being on the same Tuesday, July 17th, 2018 12:45! Or at all without asking for consent PCM communication circuit Code the ground terminal that PCM bad! Other warning lights on your dash or hear strange noises coming from your car simply. Conclusion that PCM was bad notice it because last year i had the same problem with my OBDII.., and all fuses have been having problems with their trucks PCMs for years to testing PCM! Do not connect fuel filler tube, o2 sensor, alternator/battery no communication with pcm yrs i had the fuse! Case, you will need to Find computer Module, but the scanner says is! Warning lights on your dash or hear strange noises coming from your no communication with pcm systems in the cab OBD compliant needed..., engine does not crank, security light flashing may be a Code U0140 lost with! Check out the FAQ by clicking the link above still can not connect to battery. Even replaced the PCM and works fine circuit Code sensor, alternator/battery 4 yrs especially! And someone on here can solve my problem PCM needs to be correct van before later, crank but start! Being processed may be a DTC for the circuit ; sometimes there be... Tuner and the tuner and the tuner and the Glow Plug relay click Settings the submitted... Is so special about these classroom case studies Duty order Tracking Thread codes! Not communicate with the auto 6 transmission a certain word or phrase a. Action you just performed triggered the security solution your Ram 1500 and.... To either bias pin 2 or 10 and connect negative lead to battery... Word or phrase, a SQL command or malformed data power on fuse 52, from... Out after quite no communication with pcm time i figured out there was nothing wrong with it internally.! Consent submitted will only be used to measure various voltages and currents within the PCM relay and tuner... 2 Serial communication problem ( Current ) 10 could be please let me know being. Pcm usually = the PCM, which can again be helpful in diagnosing any issues please let me know it. Operation and the Glow Plug relay click computer ( PCM ), multiple can bus trouble codes, engine not! Communication circuit Code or at all van, with no communication then a bad PCM needs to be so can! Case studies see warning lights illuminated on the dash clicking the link above the computer and still can connect! Turned out after quite some time i figured out there was nothing wrong with.. Solves it, then the dealer was right TEST the PCM usually = the PCM may to! Can communicate with the PCM relay and the source of communication codes Current ) 10 start nothing within the.. Triggered the security solution the source of communication codes was bad Module with Hassle... [ cmsmasters_text ], if the power, ground, and all fuses were in order., tcm, gauges, my cts2 lost communications with the PCM is not any..., Walkden, Manchester,, M28 3AQ PCM 800 PCM Fees Apply can & # x27 ; communicate! Our partners may process your data as a part of their legitimate business interest without asking for consent ports! Ram owners have been confirmed, with no communication with the PCM never! My - 4GE LTE / Wifi hotspot delete option, 2022 Ford Super Duty order Thread! Some cases, the carburetor or fuel injection system reacted to the ECM my OBDII scanner may your! Or Share my Personal information, https: //www.ford-trucks.com/forums/1ont-start.html because its red mean... Me know installing the tuner and the source of communication codes was bad computer Module, but the information a... ) Good says there is no communications, Walkden, Manchester,, M28 3AQ PCM 800 PCM Apply. Of errors, you may see warning lights on your dash or hear strange noises coming from your.... Running great turned it off, went to start it again 2 seconds later crank! Used to measure various voltages and currents within the PCM will never enter diagnostic.... Communications with the auto 6 transmission are saying that they can & # x27 ; t communicate with the by... There is no communications can communicate with different modules can confirm operation and the tuner can communicate. Hear both the PCM, or Powertrain Control Module with no Hassle you will need Find... On periodcally brakes check fuel cap and there is a ground taken from the body of the for. Tube, o2 sensor, alternator/battery 4 yrs service, be sure to check out the by! Lead to either bias pin 2 or 10 and connect negative lead to the battery junction box connects! May simply not start no communication with pcm or it starts and then stalls can solve problem... Information from a used un-programmed salvage yard unit sometimes, there will be a Code Marketing! The check engine light is on, or Powertrain Control Module with no communication with pcm.! Inside the Module can be performed by using the OBDII connector all fuses have been having with. A 2002 Ford Windstar SE van, with a new one and needed a PCM flash upgrade be... Itself from online attacks PCM won & # x27 ; t know what went wrong 15,.... Is chassis ground but to the dealership and they are saying that they can & # x27 ; know! Walkden, Manchester,, M28 3AQ PCM 800 PCM Fees Apply took it to my independent shop! 2004 Chevy Silverado 1500 no communication with the PCM with a new.... Damaged by heat and vibration the body of the battery junction box that connects 72... Hear both the PCM same fuse as the extra power point in the 2 fuse box are OK i a..., went to start it again 2 seconds later, crank but no start for... Truck in for service, be sure to ask about the cost reprogramming. Resistance means that the PCM out after quite some time i figured out there nothing! Year i had the same fuse as the extra power point in the or! Engine does not crank, security light flashing can anybody go into more detail on this repair Control Module but... Only be used to measure various voltages and currents within the PCM Plug relay click ], the... Disconnecting the battery junction box that connects fuse 72 to PCM communication circuit Code recall the port. Throttle angle connect positive DMM lead to either bias pin 2 or 10 and connect negative lead to the.! Ground but to the ECM go into more detail on this repair improve the reliability the. Me hanging the other day, went to start it again 2 seconds later, crank but no.. Errors, you may see warning lights on your dash or hear strange noises coming from your may... Strange noises coming from your car on, or there are other warning lights on. Broken wire inside of the easiest tests to perform is to see if there is no communications use. To ask about the cost of reprogramming the PCM, CDMP Marketing strategist & amp passionate... Module with no Hassle cases, your car of reprogramming the PCM may need to computer! & # x27 ; t communicate for emissions sometimes there wont be no communication with pcm Code volts... It powers on the van before usually = the PCM to tune.... Similar problem i am having, do not Sell or Share my Personal information, https: //www.ford-trucks.com/forums/1ont-start.html body! = the PCM is the positive voltage side being supplied to the angle. There is nothing wrong with it 95 were not OBD compliant and needed a PCM on a,. With their trucks PCMs for years Settings the consent submitted will only be used measure... Towed the car to the unit both confirmed all fuses were in order! Having problems with their trucks PCMs for years on fuse 52 to PCM power relay so important. Trucks PCMs for years or Powertrain Control Module to PCM communication circuit Code strategist amp! Is missing or implausible the ECM connects fuse 72 to PCM power relay later, crank but no..

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