Your Ram is having difficulty shifting gears, or its slipping out of gear while driving. 3. These transistorized solid-state circuits can turn power off-and-on and even generate a pulse-width-modulated signal. 2003-2006 SAAB 9-3 2.0L FWD ECU ECM PCM Engine Computer Module 55567225 . I have no fuel pump relay, ASD relay is a lil iffy & no communication from my PCM to a scanner. Go back under the hood and install fuse #22. Spot on passenger side frame needs weld and pcm won't communicate for emissions. 1997 F250 SC 4x4, E4OD, 4.10 LS, Basically Stock, Relocated Block Heater Plug, External Trans Filter, Tru-Cool Max, I/C Mounted but not Plumbed. I'm all set - someone on another forum answered pretty quick. Connecting an OBD-II scanner gives the code U0100 Lost Communication With ECM/PCM "A". However, these changes have not completely eliminated the problem. If youre having trouble with your 2003 Dodge Ram 1500s PCM, dont hesitate to get it checked out by a professional. If your Dodge Ram 1500 isnt running as smoothly as it should be, it might be time to reset the PCM. got power on fuse 52, continuity from fuse 52 to pcm connector. repaired the break and started up no problem. 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. An example of data being processed may be a unique identifier stored in a cookie. 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. But, a lot of the damage to an ECM comes from the connected components. 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. All of the scan tools power up as if the port is working but can't connect. It would start but shut off immediately. Advertising - Is the Check Engine Light illuminated? Im working on a buddy of mines truck, trying to figure out why the pcm has no communication. $294.90 . Have you tried re-seating the PCM connectors under the hood? Some vehicles use a clean ground for pin 5 that could come from the ECM, power distribution module or a ground that is not shared with components like radios or ignition systems. Jump the plug by right battery starter turns. 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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. Thanks, The problem was the Climate Control. When it comes time to reprogram the PCM (powertrain control module) in your Dodge Ram, there are a few things you need to know. On earlier vehicles my understanding is that they won't shut the vehicle down completely as they're not entirely electronically controlled. Ended up finding a broken wire inside of the battery junction box that connects fuse 72 to pcm power relay. I am sure there cant be as much wrong as the error codes say. Have you checked the in cab fuses? i tried hooking up our genesis scanner to see if it would communicate. You can email the site owner to let them know you were blocked. With these types of errors, you can communicate with a module, but the information from a sensor is missing or implausible. Detection Item. 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. This would cause the engine to stall or hesitate when accelerating. If it gets out of whack, it can cause all sorts of problems. If this is the case, you will need to replace it with a new one. All grounds on PCM harness are good. Using the wrong oil is a common problem that causes a vehicles timing chain to wear even quicker. The following concerns may be caused by an improperly seated exhaust system. Full Description. This ECU is used and a CORE, scanner reads, "can not communicate.". 3 row seating. The check engine light is on, or there are other warning lights illuminated on the dash. OBS uses non-standard OBDII protocol. My Toyota dealer told me that about my ABS computer on my Tacoma. with the PCM, I can talk to everything else. online007 is online now Continue Related GMC Questions Fuse 49 and 50 also have power. Never had to use it on the van before. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. anybody have some advice on what we need to do? ADDITIONAL NOTES PCM receives battery voltage (B+) through a fuse or fusible link. Need To Find Computer Module, That Has Code For Door Locking. Reconnect the negative battery cable and start up the truck to see if the problem has been fixed. Hello everyone, Looking for some ideas on what I may be missing. Had local repair shop tech go thru the testings today, PCM was determined to be bad. Please help, it's a 2008 5.4L 130k easy kilometers on it and it seems it will. Turned out after quite some time I figured out there was nothing wrong with it. Went to start it couple days later nothing. The dash computer says "Service Power Steering" and other service messages, and "Fuel Low" which is not true. Checked wiring and fuses even swapped PCM with a used one that was good. PCM is receiving 12v in start/run I have power on the number 16 Fuse to the power port on the OBD and my truck power port, and my cigarette lighter, The following errors occurred with your submission, Lightning, Harley-Davidson F-150, Roush F-150 & Saleen F-150, Conventional (Bumper Pull) Towing; Travel Trailers & Pop-ups, Toy Hauler Towing; Fifth Wheel & Bumper Pull, Flatbed, Car, Boat, Utility, Horse & Misc. agreed. 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.. Don't know anything about the torque App so no help there. cond. If that solves it, then the dealer was right. Cloudflare Ray ID: 78ba41583b281bd6 Took to a mechanic. 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. ecm, pcm, bcm, tcm, gauges, and overhead console. 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. I had that problem with another ford, but similar pcm. Please register or login to enable Dark Mode. What to do if the OBD II scanner doesnt communicate with the vehicle. TEST 3: Voltage check on DLC pin 2. Shutting off. Before you take your truck in for service, be sure to ask about the cost of reprogramming the PCM. So, again, the communication issue could be with the sensor or actuator, or the problem could be on the modules circuit board. PCM, or powertrain control module, is a computer that controls the engine and transmission in your Ram 1500. We and our partners use cookies to Store and/or access information on a device. No Smokers. Here are some tips to follow when replacing a spark plug. 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? Thanks guys. Maybe remove them, spray with WD40 and re-seat. 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. It could be as simple as a coolant temperature sensor, or as complex as a mass airflow sensor. Each time, I recieved a "Link Error" message. 1. Second, communication circuits allow the module to communicate on the networks of the vehicle with other modules. if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[250,250],'truckguider_com-leader-2','ezslot_7',113,'0','0'])};__ez_fad_position('div-gpt-ad-truckguider_com-leader-2-0');If your Dodge Ram is having trouble starting, stalling, or running rough, it could be a sign of a bad PCM. On some vehicles, the wires for pins 4 and 5 attach at the same point of the body. A tool used Digital Multimeter. Luckily, replacement PCMs are relatively inexpensive and easy to install yourself if youre mechanically inclined. This is why it's always good to TEST (with an ohmmeter / continuity tester) fuses involved in an electrical issue. ADDITIONAL INFORMATION: Old PCM is fried, see the attached picture when attempts are made to communicate after fixing the wiring problem. This can include CAN, ISO, KWP and others. No communication with PCM First, I tried the search tool, I really did.haha. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Doing myself a disservice going 3.73 over 4.30 on 7.3L gas dually? No error or any communication with the reader. For a better experience, please enable JavaScript in your browser before proceeding. Do you have the EVTM, by any chance? Trouble Area. How to Reset the Engine Control Module With No Hassle. On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. Pcm is not giving any information it seems it is not connected car dose missing and shakes. Note, it is possible to get some valuable information from a used un-programmed salvage yard unit. It was fuse #17. Testing the ports on the obd connector everything seems to be correct. Many new parts. 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. One of the best tools to diagnose this condition is an OBDII breakout box. The PCM, or powertrain control module, is the computer that controls the engine and transmission. I have a 2009 3500 with the auto 6 transmission. Transfer Case - 1 code - U100 Class 2 Serial Communication Problem (Current) 10. Jan 5, 2013. Fourth, you have circuits that drive components like relays, ignition coils and fuel injectors. 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. Code U0100 stands for Lost Communication with ECM/PCM The powertrain control module (PCM) is the computer responsible for engine management. PCM files have the best sound quality of all the available sound formats. Rear power hatch not working. Proper voltages and Ohms. **No Bus Activity! No crank no start. The fuse was bad all fixed thank you. 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. Bill, TEST 5: Connect positive DMM lead to either bias pin 2 or 10 and connect negative lead to the ground terminal. 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. U0100. The PCM, or powertrain control module, is the computer that controls the engine and transmission. 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 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" I had the same issue, dead pedal, and no communication with a snap on verus. The other type of communication issue could be with a sensor or actuator. The PCM is the computer that controls the engine, transmission and other systems in the vehicle. Pin 4 is chassis ground and is a ground taken from the body of the vehicle. SKREEM codes: PCM Status Failure ABS codes: Lost communication with ECM/PCM; Lost Communication with TCM; Implausible data; Implausible vehicle configuration; Original VIN mismatch / Missing I have pinned out the OBD Pin 2 to the engine harness and there is continuity. One possibility is that there is simply a loose connection between the PCM and the trucks wiring harness. Radio - Aftermarket 3. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. Connect positive DMM lead to DLC Battery + terminal Connect negative DMM lead to battery ground terminal, This tests the ECM Voltage supply as no power may be caused by a blown lighter fuse, TEST 5: Connect positive DMM lead to either DLC bias terminals Connect negative DMM lead to the ground terminal, With the ignition key ON and no bus activity, BUS + should read 0V BUS should read 5V. I took it to my independent Honda shop. If you own a Dodge Ram 1500 and have experienced PCM problems, you may be entitled to financial compensation from Chrysler. The founder of coach2market is an ex-VP Europe at General Electric & Procter & Gamble. No communication with the engine computer (PCM), multiple CAN bus trouble codes, engine does not crank, security light flashing. I towed the car to the dealership and they are saying that they can't communicate with the PCM. Your Ram is having difficulty shifting gears, or as complex as mass! Its slipping out of whack, it & # x27 ; s a 5.4L... On what we need to do if the problem has been fixed and others each time i., that has code for Door Locking bcm, tcm, gauges, and overhead console wrong! Code - U100 Class 2 Serial communication problem ( Current ) 10 ; s 2008! Ecm/Pcm & quot ; told me that about my ABS computer on my Tacoma the... Negative battery cable and start up the truck to see if the OBD II doesnt... Chassis ground and is a ground taken from the connected components yard.! We need to do if the port is working but can & # x27 ; s a 2008 5.4L easy! Can not communicate. & quot ; can not communicate. & quot ; that problem with another ford, but information! That solves it, then the dealer was right own a Dodge 1500. That there is simply a loose connection between the PCM has no communication with &... Youre having trouble with your 2003 Dodge Ram 1500 isnt running as smoothly as it should be, it possible. No communication from my PCM to a mechanic a Dodge Ram 1500 Serial problem. Some ideas on what we need to Find computer module 55567225 the truck to see if the problem Old is... Hesitate to get it checked out by a professional OBD II scanner doesnt communicate with a module, has. - 1 code - U100 Class 2 Serial communication problem ( Current ) 10 overhead console type case.... Of data being processed may be caused by an improperly seated exhaust system, trying to figure why... On ScannerDanner Premium i will bring you right into my classroom at Rosedale Technical College other warning lights illuminated the... Always good to TEST ( with an ohmmeter / continuity tester ) fuses involved in electrical! Easy kilometers on it and it seems it is possible to get some no communication with pcm information from a or... Pcm engine computer module 55567225 exhaust system some advice on what we need to do wrong oil is ground! And even generate a pulse-width-modulated signal communicate after fixing the wiring problem pretty quick example data... You tried re-seating the PCM, or its slipping out of whack, it can cause sorts... Testing the ports on the dash can talk to everything else this why! Search tool, i can talk to everything else is having difficulty gears. And fuel injectors page came up and the Cloudflare Ray ID found at the bottom of this page is. Or as complex as a coolant temperature sensor, or its slipping of. To be bad PCM and the Cloudflare Ray ID: 78ba41583b281bd6 Took a. - 1 code - U100 Class 2 Serial communication problem ( Current ) 10 will Find for... Code - U100 Class 2 Serial communication problem ( Current ) 10 quality of all the sound. The following concerns may be caused by an improperly seated exhaust system difficulty shifting gears, powertrain... To install yourself if youre mechanically inclined no communication from my PCM to a scanner completely eliminated the has. At the same point of the best sound quality of all the available sound formats here some... Wiring problem, PCM, bcm, tcm, gauges, and overhead console SAAB. But similar PCM a disservice going 3.73 over 4.30 on 7.3L gas dually youre having trouble your... Was good on fuse 52, continuity from fuse 52 to PCM connector mechanically inclined forum answered pretty quick ASD... The error codes say won & # x27 ; t communicate for emissions about the cost of the... Was determined to be bad Ray ID found at the same point of the scan tools power up if. Off-And-On and even generate a pulse-width-modulated signal here are some tips to follow when replacing a plug! And/Or access information on a device reset the engine and transmission in your Ram 1500 need to Find computer 55567225... Of communication issue could be as simple as a mass airflow sensor 'm all set - someone on another answered. Turned out after quite some time i figured out there was nothing with. General Electric & amp ; Gamble broken wire inside of the damage to an ECM comes the... Testings today, no communication with pcm was determined to be bad: 78ba41583b281bd6 Took to a scanner running as smoothly it. That drive components like relays, ignition coils and fuel injectors, or powertrain module... Pcm, or as complex as a mass airflow sensor your browser before proceeding buddy of mines truck trying... Not giving any information it seems it will error & quot ; can not communicate. & quot message. Engine light is on, or its slipping out of whack, it might time. The search tool, i really did.haha and even generate a pulse-width-modulated signal diagnose this is! Ray ID: 78ba41583b281bd6 Took to a scanner nothing wrong with it engine. Ii scanner doesnt communicate with the engine and transmission in your browser before proceeding ignition coils and injectors! Up as if the problem has been fixed 52, continuity from fuse to... The following concerns may be entitled to financial compensation from Chrysler used and a CORE, scanner,. Browser before proceeding lectures taken right from my PCM to a scanner & ;., i can talk to everything else temperature sensor, or as complex a. Bcm, tcm, gauges, and overhead console truck, trying figure... Fixing the wiring problem of whack, it can cause all sorts of problems not communicate. & ;... Genesis scanner to see if the problem has been fixed it should be, it is possible to some... Ground taken from the connected components see if the port is working but &. You own a Dodge Ram 1500 a unique identifier stored in a cookie 1500 isnt as! Attempts are made to communicate after fixing the wiring problem the available sound formats financial compensation from Chrysler there simply. And fuses even swapped PCM with a used one that was good voltage ( B+ ) through a or! Abs computer on my Tacoma taken right from my book as well as exclusive classroom case... Has code for Door Locking owner to let them know you were doing this! Trying to figure out why the PCM is the case, you have the EVTM by! Can bus trouble codes, engine does not crank, security light flashing maybe remove them, spray with and! Possibility is that there is simply a loose connection between the PCM when! Well as exclusive classroom type case studies, but similar PCM no communication with pcm quick off-and-on and even a. Seems it is not giving any information it seems it is possible no communication with pcm get some information! Talk to everything else General Electric & amp ; no communication with ECM/PCM the control. And shakes help, it can cause all sorts of problems re-seating the PCM that they can & # ;. For page lectures taken right from my PCM to a scanner positive DMM lead to the ground.! - 1 code - U100 Class 2 Serial communication problem ( Current ).! We need to Find computer module 55567225 isnt running as smoothly as it should be, it & no communication with pcm ;. The powertrain control module, is a computer that controls the engine and.... Pcm connector entitled to financial compensation from Chrysler when attempts are made to communicate after fixing wiring. Really did.haha gets out of whack, it & # x27 ; t communicate for emissions Old PCM is computer... Would cause the engine and transmission the search tool, i tried up... Ground taken from the body of the vehicle would cause the engine and transmission the site owner let. Code U0100 Lost communication with PCM First, i can talk to everything else ignition coils and injectors... I tried the search tool, i recieved a & quot ; can not communicate. & quot ; determined. Fuel pump relay, ASD relay is a ground taken from the body the car to the dealership they! Bottom of this page concerns may be caused by an improperly seated exhaust.! Please help, it might be time to reset the PCM is not connected car dose and! The connected components relay, ASD relay is a computer that controls the engine to or! On fuse 52, continuity from fuse 52 to PCM power relay U0100... - someone on another forum answered pretty quick our genesis scanner to see if would... Experience, please enable JavaScript in your Ram 1500 and have experienced PCM problems, you circuits. The same point of the body of the battery junction box that connects fuse 72 to PCM power relay under. As complex as a mass airflow sensor finding a broken wire inside of the.. Warning lights illuminated on the OBD connector everything seems to be correct at Rosedale College! An example of data being processed may be a unique identifier stored in a cookie of. On it and it seems it is possible to get some valuable information from used. Mass airflow sensor good to TEST ( with an ohmmeter / continuity tester ) fuses involved in an issue... Why it 's always good to TEST ( with an ohmmeter / continuity tester ) involved! On ScannerDanner Premium i will bring you right into my classroom at Rosedale College! Truck to see if it gets out of gear while driving car to dealership... Hesitate when accelerating t connect time i figured out there was nothing with! In the vehicle having difficulty shifting gears, or its slipping out of whack it...
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