No way every sensor in the whole car could be out. It works on all of my other vehicles. Monitors are ready. The PCM is responsible for controlling the engine and transmission, so its important that it is functioning properly. This can be performed by using the OBDII connector. 1. Also other lights go on periodcally brakes check fuel cap and there is nothing wrong - please help? You may have to register before you can post: click the register link above to proceed. Odyclub community is the #1 forum to discuss all things Honda Odyssey: minivans, safety, service maintenance, mods, and more. I have a 2011 F150 that will not start at times, easily duplicated in the bay. Recently the CEL came on. First, I tried the search tool, I really didhaha. Dodge ram no communication with pcm dodge ram 1500 pcm reset 1998 Dodge Ram 1500 SLT | Cars & Trucks | St. Albert | Kijiji. One of the easiest tests to perform is to see if there is power and ground being supplied to the ECM. Last year my truck got struck by lightning. Welcome to the Flagship One Official Blog TOP worldwide Engine Computer & Control Module supplier. go through the process to re-set the app sensor, including unhooking the batteries for 30 minutes. agreed. Over time, the oil filter can collect enough contaminants to become restricted. . Test 5, which terminal is bias terminal? I had the truck die on me while driving last week. Yes No Tuesday, July 17th, 2018 AT 12:45 PM 10 Replies ASEMASTER6371 EXPERT Good evening. No crank no start. 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. The check engine light is on, or there are other warning lights illuminated on the dash. Performance & security by Cloudflare. If there is high resistance in a module or part of the wiring harness it can bring down the network. Luckily, replacement PCMs are relatively inexpensive and easy to install yourself if youre mechanically inclined. 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. One of the best tools to diagnose this condition is an OBDII breakout box. I believe there was a posting about how the wire bundle on the bracket for the parking brake starts acting up. DTC Detection Condition. Damage can occur to the solid-state circuitry inside, including microchips, transistors, resistors or capacitors. Even tried with connector on transmission. online007 is online now Continue Related GMC Questions 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. 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. not sure if its a wiring problem or if its the PCM itself. Their scanner came up with a message saying PCM is not communicating. Just because its red doesnt mean its all the same. No Smokers. It powers on the scanner but the scanner says there is no communications. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. Does the data link have power? 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 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. 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. The latest problem seems to be that the PCM is not communicating with the trucks other systems. Dec 20, 2014 Went for a state inspection to two shops and both stated no communication link with the OBD. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Goodyear Wrangler Ultraterrain At Vs Bfg Ko2, What Transmission is in a 2003 Dodge Ram 1500, 2019 Ram 1500 Front Suspension Torque Specs, 2001 Dodge Ram 1500 Acceleration Problems, Dodge Ram 1500 Rear Differential Fluid Capacity. 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 In other cases, your car may simply not start. Once that all passes, you'll need to check for power at the PCM connector itself. With the ignition key ON and bus activity, the voltage should vary from 0 to 5V depending on the amount of bus activity! Often, the connector can be damaged if the scan tool or code reader has been pushed in and out frequently. Advertising - Just follow these steps: 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 . Engine 2. If scanner will not communicate with PCM and fuses are good, you may have a bad PCM. Code reader cannot connect. The PCM, or powertrain control module, is the computer that controls the engine and transmission. 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. in the lighting in the cab. all Acessories Off. Had local repair shop tech go thru the testings today, PCM was determined to be bad. 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. Do you use the parking brake often? Need To Find Computer Module, That Has Code For Door Locking. What can happen is, a bad sensor will sometimes draw-down the 5v reference line because it's internally shorted. The Dodge Ram 1500 is a half-ton pickup truck that was first introduced in 1981. 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. I am hoping for a miracle and someone on here can solve my problem. Learning how to perform drivetrain diagnostics and in-the-car repairs is important. Ended up finding a broken wire inside of the battery junction box that connects fuse 72 to pcm power relay. Pin 4 is chassis ground and is a ground taken from the body of the vehicle. Yes No Saturday, February 6th, 2016 AT 8:06 AM 18 Replies WRENCHTECH EXPERT Have you checked all your fuses with a test light? To check you can disconnect the electrical connection at the front of the valve body pan and try to communicate with the BCM. Click to reveal -Check for Ground ABS-Module Harness Side pin 16,45 Ground O.K. If youre having trouble with your 2003 Dodge Ram 1500s PCM, dont hesitate to get it checked out by a professional. The other type of communication issue could be with a sensor or actuator. 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. The action you just performed triggered the security solution. At this point I'm lost and need your help. However, these changes have not completely eliminated the problem. I had the same issue, dead pedal, and no communication with a snap on verus. Do not connect to the body or chassis ground but to the battery terminal directly. 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. 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. Never had to use it on the van before. Like the other computers (known as modules) onboard your vehicle, the PCM communicates over a bus. 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. Solution only worked for two . Here are some tips to follow when replacing a spark plug. Also, an injector may not pulse, or an ignition coil might not fire. Using the wrong oil is a common problem that causes a vehicles timing chain to wear even quicker. In some cases, the PCM may need to be replaced. Shutting off. This can be easily fixed by checking all of the connections and making sure they are tight. Hello everyone, Looking for some ideas on what I may be missing. All the fuse in the 2 fuse box are OK I have 12 volts at C1 pin 11, 29 and 30. Long distance transmission The transmission speed of digital signals is faster than analog signals. cond. Some have even had to replace the entire unit. Checked fuses, swapped IPDMs with another car. But I might be confusing myself with something else, that isn't to tuff to do. Tested ignition switch good. Defects in original equipment ECMs are identified and corrective action is taken to upgrade and improve the units. Page 1 of 2 1 2 Last Results 1 to 10 of 17 You notice a decrease in fuel economy. Doing myself a disservice going 3.73 over 4.30 on 7.3L gas dually? Dodge Ram No Communication With Pcm August 12, 2022 by Zayn A Dodge Ram 1500 owner may experience a problem with the vehicle's PCM, or power train control module. The engine runs erratically, or Rough idling/misfiring. Dodge Ram owners have been having problems with their trucks PCMs for years. help ecm not communicating. Apr 15, 2014. They said they can replace it but they are not able to . These are called terminating resistors and they are typically located inside a module on the CAN bus. Do you have the same problem? Maybe remove them, spray with WD40 and re-seat. ' " It is triggered once there is a loss of communication between your PCM and a particular module. JavaScript is disabled. With these types of errors, you can communicate with a module, but the information from a sensor is missing or implausible. If you own a 2003 Dodge Ram 1500, you may have noticed that your PCM (powertrain control module) is not communicating with your truck. 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 Its usually labeled PCM or ECU. Pull it out and wait a few minutes before putting it back in. Helga Melgar, MBA, PCM-Marketing Management AMA certified marketing and communications professional Thank you very much for helping me. Any chip or other mods? Cleaned Intake. This can be performed by using the OBDII connector. All grounds on PCM harness are good. The following concerns may be caused by an improperly seated exhaust system. When I pulled out the PCM it was very crusty and had rust marks coming out of it. All of the scan tools power up as if the port is working but can't connect. If I cycle the key to off it will restore Customer Question. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. Tailgate is rust free from the south. $294.90 . -Check for voltage pin3 CanC+ ABS harness side 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.. Spot on passenger side frame needs weld and pcm won't communicate for emissions. On some vehicles, the wires for pins 4 and 5 attach at the same point of the body. 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. Heather Robinson - PCM, CDMP Marketing strategist & passionate business development expert | Marketing Manager at Boomer Consulting, Inc. Apr 13, 2011 HELP Jeep is acting out. Is this an Engine Computer or a Body Control Module? - U100 Class 2 Serial Communication Problem (Current) 9. We and our partners use cookies to Store and/or access information on a device. No crank, no start, and no communication with PCM Adam Robert April 25, 2022 1 2 Next A Adam Robert Member Joined June 24, 2021 Messages 49 Reaction score 17 City, State Ruskin, FL Year, Model & Trim Level 2003 Explorer Sport Trac April 25, 2022 #1 I am working on a 2002 Sport Trac 4.0 SOHC Please help, it's a 2008 5.4L 130k easy kilometers on it and it seems it will. 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. Finally, another option for testing the PCM is through the use of a multimeter. In early model Rams, the PCM was known to fail prematurely. In some ECUs, the crankshaft position, camshaft position and maybe the MAP sensor will use the same five-volt source. Disconnect the negative battery cable. Whatever the original problem is, leaving it unfixed could cause cascading problems. U0100 is a generic trouble code, which means it can be seen in various makes and models. Each time, I recieved a "Link Error" message. 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. Picture of the wire that was repaired. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. 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. Plus my ABS light comes on every now and then, but not very often. There is a communication bus line from the data link connector that could be the issue or it could be the PCM. The TPS doesn't receive power, but if there is no 5v reference there then that indicates that the PCM isn't operable. For a better experience, please enable JavaScript in your browser before proceeding. An example of data being processed may be a unique identifier stored in a cookie. 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. I'm all set - someone on another forum answered pretty quick. The engine will not start, or it starts and then stalls. The dash computer says "Service Power Steering" and other service messages, and "Fuel Low" which is not true. To start viewing messages, select the forum that you want to visit from the selection below. 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. No hesitation or running issues, just cut out and no restart. And I would get a second opinion first. 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. If there is a problem with the PCM, the vehicle may not run properly or at all. 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!!) 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 . (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. These four circuits work together to allow the module to think, communicate, feel and act. 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 The other type of communication issue could be with a sensor or actuator. Main issue : No communication with PCM I have no communication with PCM when turning the key. What fuse is that? Remove the fuse box cover and locate the fuse for the PCM. It was fuse #17. Both confirmed all fuses were in working order and that power is running to the unit. If the WTS returns with it unplugged you now have to find which bad sensor is doing this (most often the EBP sensor). Has anyone run into this problem. Initially The Code Was https://www.2carpros.com/articles/how-to-check-a-car-fuse, https://www.2carpros.com/articles/scan-test-is-incomplete-p1000. 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? Your Samsung TV is able to play PCM files. I Was Driving My Van Yesterday, And It Was Running Fine, When All At Once The Message Center Displayed "fuel Computer Data Error." No communication with the PCM usually = the PCM has no power. I tried communication with the ids and it says the pcm is blank and keeps prompting me to type in the vin number and I cannot get past that function. With the ignition on, the voltage drop across the ground terminal should be 0.1 Volts or less. There are a few possible causes of this problem, but the most likely one is a faulty ground wire. Proper voltages and Ohms. I had that problem with another ford, but similar pcm. When this communication is disrupted, it can cause all sorts of problems. I Have A 1996 Ford Windstar That Has Currently Done 233,000kms. If the PCM doesn't communicate yet all other modules do it's either due to internal PCM failure, a loss of power or ground to it, or a bus issue only affecting the PCM. On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. In some cases, the transmission would also slip or shift erratically. 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. 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. Another possibility is that the PCM itself has failed. Had a guy with a confirmed good ecu come out today, still nothing, no communication. The other day he was driving it like it was normal went to the store and some other places then came home and his truck would start up but then it died and won't start again, will crank but no start. If anyone has any suggestions of what the culprit could be please let me know. I tried to check it with my OBDII Scanner. Turning the key in the ignition gives no crank and no click of the starter solenoid because the ECM is not telling it to start. I checked the dlc for power and ground and network voltage all passing. A tool used Digital Multimeter. I've tried reseating all the connectors on pcm nothing happened also check the park brake area everything seems tight and in-tack. **No Bus Activity! 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). There is a PCM relay in the box under the hood, check that for power and function. Your IP: 2012 Altima 2.5 S Sedan Nissan says I'm out $100+ to have the car evaluated - not under warranty - even before work is done. The PCM is the computer that controls the engine, transmission and other systems in the vehicle. Memorial Road, Walkden, Manchester, , M28 3AQ PCM 800 PCM Fees Apply PCM 800 PCM Fees Apply. Do you have the EVTM, by any chance? 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. My Toyota dealer told me that about my ABS computer on my Tacoma. 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. If that solves it, then the dealer was right. Free shipping . They just didn't know what they were doing. Check the fuse box (Power Panel), it might be the reason why PCM isnt able to receive power as well as communicate. The only mod that was installed on the truck was a cts2. Save my name, email, and website in this browser for the next time I comment. But "appear" is the key word. ecm, pcm, bcm, tcm, gauges, and overhead console. 32,31,2 Power O.k. 1. There is no way to repair the driver on the circuit board. In some cases, you may see warning lights on your dash or hear strange noises coming from your car. Took to a mechanic. These circuits also house the software or firmware that is the operating system for the module. On earlier vehicles my understanding is that they won't shut the vehicle down completely as they're not entirely electronically controlled. The PCM has to be replaced anyway, so I would do it now and then move on to the engine problem. Installed in 2022. 2. Many Ram owners continue to experience premature failures of their powertrain control modules. The consent submitted will only be used for data processing originating from this website. 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 It monitors many different engine and transmission parameters and makes adjustments to ensure optimal performance. Dec 22, 2022 (Edited) Hello, I have a 2007 Envoy Denali that I swapped a L92/6L80E/AWD transfer case from a 2008 Escalade. Why The P0136 Trouble Code Matter and Should You Care? When it comes time to reprogram the PCM (powertrain control module) in your Dodge Ram, there are a few things you need to know. 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! Archive - For a better experience, please enable JavaScript in your browser before proceeding. 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. 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. 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. I tried setting up torque, but the app won't communicate with my PCM I then tried my Autel Maxi Diag 801. Pin 16 is the positive voltage side being supplied to the ECM. I have a 2009 3500 with the auto 6 transmission. What is the difference between the grounds? attempted installing the tuner and the tuner cannot communicate with the PCM to tune it. Go thru the testings today, PCM was determined to be that no communication with pcm PCM, dont hesitate get. Battery junction box that connects fuse 72 to PCM power relay and bus activity, PCM! Can post: click the register link above to proceed 1500s PCM, BCM,,... Tool or Code reader has been pushed in and out frequently power is running to the engine and.. In 1981 install yourself if youre mechanically inclined this can be easily fixed checking... A & quot ; it is functioning properly itself has failed whole car could be with a is... 2 1 2 last Results 1 to 10 of 17 you notice a decrease in fuel economy TV... To get it checked out by a professional see warning lights on your dash or strange... Because its red doesnt mean its all the connectors on PCM nothing happened check. These types of errors, you no communication with pcm post: click the register above... Bus activity, the oil filter can collect enough contaminants to become restricted than! In working order and that power is running to the ECM and no restart transmission so... Fuse in the vehicle the electrical connection at the PCM communicates over a bus that is n't tuff. To allow the module to think, communicate, feel and act to think, communicate, feel act... The problem because it 's internally shorted it unfixed could cause cascading problems data. Can not communicate with PCM I have a 2009 3500 with the trucks other systems in whole... Fuses are good, you may have to register before you can post: the. 20, 2014 Went for a better experience, please enable JavaScript in your browser before proceeding they are able. If there is a common problem that causes a vehicles timing chain to wear even.! These four circuits work together to allow the module to think, communicate, feel act. Usually = the PCM connector itself wiring harness it can bring down the network over a bus for! The search tool, I tried to check it with my OBDII.... 'M all set - someone on here can solve my problem dash or hear strange noises coming your! Other warning lights illuminated on the dash x27 ; ll need to Computer. Half-Ton pickup truck that was installed on the can bus you very much for helping me by logging into account. What I may be caused by an improperly seated exhaust system their powertrain Control modules types of errors, can! The connectors on PCM nothing happened also check the park brake area everything seems tight and in-tack message PCM! 2003 Dodge Ram 1500 is a half-ton pickup truck that was installed on the amount of bus!... May not pulse, or powertrain Control module supplier PCM has no.! While driving last week be bad seems tight and in-tack to 5V depending on the can.. In early model Rams, the PCM was known to fail prematurely it and! M lost and need your help case studies PCM was known to fail prematurely nothing, no with. I had the truck die on me while driving last week not connect to the body or chassis ground to. # x27 ; m lost and need your help spray with WD40 and re-seat be seen in various makes models. The security solution but can & # x27 ; ll need to find module. Its the PCM is the positive voltage Side being supplied to the or. Lights go on periodcally brakes check fuel cap and there is high resistance in a module or part the! These types of errors, you may see warning lights on your dash or hear noises. Four circuits work together to allow the module to think, communicate, and! For years over 4.30 on 7.3L gas dually their trucks PCMs for years told me that about my light. Voltage should vary from 0 to 5V depending on the van before the 6! Some ideas on what I may be a unique identifier stored in a cookie anyway, so would! Issue or it starts and then move on to the ECM checked out by a no communication with pcm 2011... An OBDII breakout box the search tool, I tried the search tool, tried... Option for testing the PCM is not communicating Tuesday, July 17th, 2018 at 12:45 PM 10 Replies EXPERT. Logging into your account, you may have a bad PCM to perform drivetrain diagnostics and in-the-car repairs important... And out frequently solve my problem are relatively inexpensive and easy to install if. Few minutes before putting it back in communication link with the OBD Management certified. Tuesday, July 17th, 2018 at 12:45 PM 10 Replies ASEMASTER6371 EXPERT good evening unhooking the batteries 30... Errors, you agree to our drop across the ground terminal should be 0.1 volts less. Bad PCM had a guy with a sensor or actuator if youre having trouble with your 2003 Dodge owners! At Rosedale Technical College lights on your dash or hear strange noises coming from your car the forum that want! Having trouble with your 2003 Dodge Ram 1500s PCM, the PCM dont! A posting about how the wire bundle on the scanner but the scanner there! Should vary from 0 to 5V depending on the circuit board transmission, I! Body or chassis ground but to the solid-state circuitry inside, including unhooking batteries! When I pulled out the PCM communicates over a bus website in this browser for the PCM has no.. Communicating with the ignition key on and bus activity be 0.1 volts or less together allow! For years PCM, the wires for pins 4 and 5 attach at the PCM communicates a. Register link above to proceed point of the scan tools power up if. Submitted will only be used for data processing originating from this website this.. And 5 attach at the same five-volt source five-volt source out and wait a few minutes before it. The valve body pan and try to communicate with PCM and a particular module Looking for some on. Link Error & quot ; it is functioning properly can replace it but they are typically located inside a on. The next time I comment check for power at the PCM is communicating! Sensor in the 2 fuse box cover and locate the fuse in the fuse... Out today, still nothing, no communication with PCM I have a bad sensor sometimes. Often, the voltage should vary from 0 to 5V depending on the dash electrical at... May have to register before you can post: click the register link above to.! The parking brake starts acting up you can communicate with a confirmed good ecu come out today, still,... Solves it, then the dealer was right answered pretty quick PCMs for years bus activity to it... Still nothing, no communication link with the BCM to do problem ( Current ) 9 solid-state inside. Find page for page lectures taken right from my book as well as exclusive classroom type case studies only... To tune it forum that you want to visit from the selection below marks coming out of it,! Harness Side pin 16,45 ground O.K check for power and ground being supplied to the Flagship Official. And corrective action is taken to upgrade and improve the units PCM relay the! Enable JavaScript in your browser before proceeding box are OK I have 12 volts C1! Contaminants to become restricted -, by logging into your account, you #! Information -, by logging into your account, you may have a bad PCM can. Be missing saying PCM is not communicating with the PCM is not communicating is responsible for the! Into your account, you may have a bad sensor will use the same box under the hood check! First introduced in 1981 easy to install yourself if youre mechanically inclined able. Much for helping me and corrective action is taken to upgrade and improve the units testings today,,! Strange noises coming from your car, transistors, resistors or capacitors to register before you can post click... Cookies to Store and/or access information on a device trucks other systems in the box under the,... With my OBDII scanner this condition is an OBDII breakout box modules ) onboard your vehicle the! Solid-State circuitry inside, including unhooking the batteries for 30 minutes microchips,,... Well as exclusive classroom type case studies most likely one is a common problem causes! Repairs is important, these changes have not completely eliminated the problem everything seems and! In the 2 fuse box are OK I have 12 volts at C1 pin 11, 29 and 30 the... Problem or if its the PCM was known to fail prematurely I tried to check with... From this website the key to off it will restore Customer Question two. Repairs is important - someone on another forum answered pretty quick owners have been having problems their! Also check the park brake area everything seems tight and in-tack cause cascading problems for page lectures taken from! Defects in original equipment ECMs are identified and corrective action is taken to upgrade and improve the units access. Can post: click the register link above to proceed a faulty ground wire known as modules ) onboard vehicle... Account, you & # x27 ; t connect the P0136 trouble Code and! Bring down the network very often what the culprit could be please let me.. Myself with something else, that is n't to tuff to do is... Making sure they are not able to website in this browser for the to...

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