It monitors many different engine and transmission parameters and makes adjustments to ensure optimal performance. in the lighting in the cab. Also, if the ECM is replaced, the shorted circuit can damage the new module. same thing, no communication. 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. Thank you very much for helping me. Over time, the oil filter can collect enough contaminants to become restricted. I had no pcm communication with scanner, no tach and no WTS light. U0100. I have a 2009 3500 with the auto 6 transmission. If there is a problem with the PCM, the vehicle may not run properly or at all. 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. It could be as simple as a coolant temperature sensor, or as complex as a mass airflow sensor. These four circuits work together to allow the module to think, communicate, feel and act. The data bus is what allows communication between different modules and systems in your vehicle. With the ignition key ON and bus activity, the voltage should vary from 0 to 5V depending on the amount of bus activity! 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 I am sure there cant be as much wrong as the error codes say. Now just waiting on those guys to figure out the issue. One possibility is that there is simply a loose connection between the PCM and the trucks wiring harness. 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. Now I am going through a check engine light on with vibrations and my diagnostic port does not work (AutoZone says I have a short or something somewhere in my dash). Jump the plug by right battery starter turns. Their assessment is that the PCM has failed and that I need to have it checked out at the local dealership. I towed the car to the dealership and they are saying that they can't communicate with the PCM. If you own a Dodge Ram 1500 and have experienced PCM problems, you may be entitled to financial compensation from Chrysler. Advertising - What to do if the OBD II scanner doesnt communicate with the vehicle. It loses comm. Next, try resetting the PCM by disconnecting the battery for 30 seconds. I tried setting up torque, but the app won't communicate with my PCM I then tried my Autel Maxi Diag 801. I'd check connections. No power to fuel pump no spark. Cookie Policy - Same thing at Autozone. Please help, it's a 2008 5.4L 130k easy kilometers on it and it seems it will. No start. For a better experience, please enable JavaScript in your browser before proceeding. I Was Driving My Van Yesterday, And It Was Running Fine, When All At Once The Message Center Displayed "fuel Computer Data Error." ' " It is triggered once there is a loss of communication between your PCM and a particular module. 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: Never had to use it on the van before. It works on all of my other vehicles. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); The world's top supplier of programmed OEM (Original Equipment Manufacturer) Powertrain Control Modules (PCM), Engine Control Modules (ECM), Injection Control Modules (IDM), Body Control Modules (BCM), Transmission Control Modules (TCM), Engine Control Units and all other car control units. Does the Wait-To-Start light come on as it should? Dodge ram no communication with pcm dodge ram 1500 pcm reset 1998 Dodge Ram 1500 SLT | Cars & Trucks | St. Albert | Kijiji. If you own a 2003 Dodge Ram 1500, you may have noticed that your PCM (powertrain control module) is not communicating with your truck. No Code, just that message. 2022 MY - 4GE LTE / Wifi hotspot delete option, 2022 Ford Super Duty Order Tracking Thread. JavaScript is disabled. In some cases, the PCM may need to be replaced. Checked wiring and fuses even swapped PCM with a used one that was good. 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 They will be able to diagnose the problem and get your car back up and running again. Save my name, email, and website in this browser for the next time I comment. They said they can replace it but they are not able to . Do not connect to the body or chassis ground but to the battery terminal directly. Even replaced the computer and still cannot connect. 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). My Toyota dealer told me that about my ABS computer on my Tacoma. Seat module - driver 4 . All of these circuits inside the module can be damaged by heat and vibration. When this communication is disrupted, it can cause all sorts of problems. Once that all passes, you'll need to check for power at the PCM connector itself. attempted installing the tuner and the tuner cannot communicate with the PCM to tune it. $294.90 . 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 . Buried deeply in all those codes was 'computer'. In some ECUs, the crankshaft position, camshaft position and maybe the MAP sensor will use the same five-volt source. Go back under the hood and install fuse #22. One of the easiest tests to perform is to see if there is power and ground being supplied to the ECM. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. If scanner will not communicate with PCM and fuses are good, you may have a bad PCM. ecm, pcm, bcm, tcm, gauges, and overhead console. Click to reveal Fuse 49 and 50 also have power. Before you take your truck in for service, be sure to ask about the cost of reprogramming the PCM. In some cases, the transmission would also slip or shift erratically. It was fuse #17. 2. U0100 no communication with pcm. 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! Note, it is possible to get some valuable information from a used un-programmed salvage yard unit. LOL. Truck still won't start , tried to scan but says ,' no communication' , also 'wait to start' lights doesn't come on. You're beyond my knowledge of the subject, but here's a bump. You could try the local yunk yards, but Ford will have to flash the PCM with correct VIN. It powers on the scanner but the scanner says there is no communications. **No Bus Activity! If a module like an ECM can't communicate with the vehicle, sensor or a scan tool, it can be a challenging diagnostic problem. The PCM has to be replaced anyway, so I would do it now and then move on to the engine problem. What can happen is, a bad sensor will sometimes draw-down the 5v reference line because it's internally shorted. I'm all set - someone on another forum answered pretty quick. [/cmsmasters_text][/cmsmasters_column][/cmsmasters_row], TFor 2008 FX35 Infinit 3,5L 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. I do not have a check engine light on. all Acessories Off. 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. Had local repair shop tech go thru the testings today, PCM was determined to be bad. 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. There is a PCM relay in the box under the hood, check that for power and function. Had a guy with a confirmed good ecu come out today, still nothing, no communication. There is a communication bus line from the data link connector that could be the issue or it could be the PCM. Used 2 different diagnostic tools, older Snap-on Verus and an Autel Elite, with no communication to either one. 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. PCM files have the best sound quality of all the available sound formats. With the ignition on, the voltage drop across the ground terminal should be 0.1 Volts or less. Free shipping . Have you checked all your fuses with a test light? Pcm is not giving any information it seems it is not connected car dose missing and shakes. Cleaned Intake. 17 Pics about 1998 Dodge Ram 1500 SLT | Cars & Trucks | St. Albert | Kijiji : Dodge Ram No Communication With Pcm - Truck Guider, Dodge RAM HEMI 5.7L 09-14 Reaper Trinity 2 Stage 1 Kit Gasoline and and also Reset service . 94.5 and early 95 were not OBD compliant and needed a PCM flash upgrade to be so. Contact Us - 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. Customer Question. No communication with the engine computer (PCM), multiple CAN bus trouble codes, engine does not crank, security light flashing. First I have a 2002 Ford Windstar SE van, with a 3.8 liter motor. Pin 2 is the AUX POWER TRAIN controller which I'm guessing you don't have. No communication with PCM First, I tried the search tool, I really did.haha. The other type of communication issue could be with a sensor or actuator. Pigtail wiring included for your convivence. If this is the case, you may need to take your truck to a dealer or mechanic for diagnosis and repair. If it gets out of whack, it can cause all sorts of problems. 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. Also when driving the van the overdrive is still working, Thursday, June 11th, 2020 AT 1:44 PM We and our partners use cookies to Store and/or access information on a device. When it comes time to reprogram the PCM (powertrain control module) in your Dodge Ram, there are a few things you need to know. Learning how to perform drivetrain diagnostics and in-the-car repairs is important. The TPS doesn't receive power, but if there is no 5v reference there then that indicates that the PCM isn't operable. Finally, another option for testing the PCM is through the use of a multimeter. Manage Preferences - odyclub.com is not in any way affiliated with Honda Motor Company. Immaculately Finished Throughout; Studio in House Share; All Bills Included; Internet Included; Town Centre Location; A Brief Walk to Commuter Links; No Pets. There are a few possible reasons why your PCM is not communicating with your truck, and well go over them here. But, a lot of the damage to an ECM comes from the connected components. Since its inception, the Ram 1500 has been plagued with PCM problems. If anyone has any suggestions of what the culprit could be please let me know. Has anyone run into this problem. This will allow you to read any codes that may be stored in the PCM, which can then be used to diagnose any issues. But I might be confusing myself with something else, that isn't to tuff to do. 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