no communication with pcm

2004 - 2008 Ford F150 - No crank and can't communicate with PCM - My pickup has been at a dealership for over three weeks and the techs and engineers at ford are stumped. First, you have the circuits and components that process and compute. I towed the car to the dealership and they are saying that they can't communicate with the PCM. ADDITIONAL INFORMATION: Old PCM is fried, see the attached picture when attempts are made to communicate after fixing the wiring problem. Last year my truck got struck by lightning. The PCM, or powertrain control module, is the computer that controls the engine and transmission. The other type of communication issue could be with a sensor or actuator. All the fuse in the 2 fuse box are OK I have 12 volts at C1 pin 11, 29 and 30. With this reader I can only delete the error codes not reset them. Thanks for the report. Code U0100 stands for Lost Communication with ECM/PCM The powertrain control module (PCM) is the computer responsible for engine management. Currently at 83K. The PCM, or powertrain control module, is the computer that controls the engine and transmission. ' " It is triggered once there is a loss of communication between your PCM and a particular module. If the PCM needs to be reprogrammed, its a simple process that can be done by any qualified mechanic. It was fuse #17. 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!!) Need To Find Computer Module, That Has Code For Door Locking. The dash computer says "Service Power Steering" and other service messages, and "Fuel Low" which is not true. 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 . in the lighting in the cab. Check the fuse box (Power Panel), it might be the reason why PCM isnt able to receive power as well as communicate. Thursday, June 11th, 2020 AT 1:52 PM Jan 5, 2013. Codes after cleared: instrument cluster uo100 lost communication to pcm u300a-64 ignition switch. Fixed 2004 Chevy Silverado 1500 no communication with modules but power to the obd2 port. Manage Preferences - 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. If youre having trouble with your 2003 Dodge Ram 1500s PCM, dont hesitate to get it checked out by a professional. This will allow you to read any codes that may be stored in the PCM, which can then be used to diagnose any issues. 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 . 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. 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. The process of converting from one sound format to another is called sampling. Engine timing is critical for overall performance. 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. The problem was the Climate Control. But "appear" is the key word. I took it to my independent Honda shop. Each time, I recieved a "Link Error" message. Each time, I recieved a "Link Error" message. I came to the conclusion that PCM was bad. Radio - Aftermarket 3. Pin 16 is the positive voltage side being supplied to the ECM. Fortunately, resetting the PCM is a pretty easy process. Sometimes, there will be a DTC for the circuit; sometimes there wont be a code. Full Description. Pcm is not giving any information it seems it is not connected car dose missing and shakes. Shutting off. ADDITIONAL NOTES PCM receives battery voltage (B+) through a fuse or fusible link. This can include CAN, ISO, KWP and others. On older throttle cable systems, the carburetor or fuel injection system reacted to the throttle angle. Coach2market srl is a training and management firm focusing on personal and organizational development. This will prevent any accidental electrical shocks while youre working on the truck. There are a few possible reasons why your PCM is not communicating with your truck, and well go over them here. Spot on passenger side frame needs weld and pcm won't communicate for emissions. 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. Installed in 2022. 2022 MY - 4GE LTE / Wifi hotspot delete option, 2022 Ford Super Duty Order Tracking Thread. Click to reveal Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. Used 2 different diagnostic tools, older Snap-on Verus and an Autel Elite, with no communication to either one. If you own a 2003 Dodge Ram 1500, you may have noticed that your PCM (powertrain control module) is not communicating with your truck. Fuses (especially underhood #9 and #22) good? TEST 3: Voltage check on DLC pin 2. Some have even had to replace the entire unit. Checked fuses, swapped IPDMs with another car. 3. **No Bus Activity! Can anybody go into more detail on this repair? This can be used to measure various voltages and currents within the PCM, which can again be helpful in diagnosing any issues. Even replaced the computer and still cannot connect. 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. There is a posting about it. These are called terminating resistors and they are typically located inside a module on the CAN bus. Also, an injector may not pulse, or an ignition coil might not fire. Same thing at Autozone. 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. They said they can replace it but they are not able to . JavaScript is disabled. Content on odyclub.com is generated by its users. Another way to test the PCM is through the use of an oscilloscope. No Smokers. I seem to recall the diagnostic port being on the same fuse as the extra power point in the cab. Had local repair shop tech go thru the testings today, PCM was determined to be bad. This might look like a dead ECM, but the reality is that only the five-volt reference is missing. Rear power hatch not working. If there is high resistance in a module or part of the wiring harness it can bring down the network. Towed it into town started. Pigtail wiring included for your convivence. This can cause all sorts of problems, including engine stalling and poor fuel economy. I Have Driven The Car Without Issue For 1000kms Over The Last Month. You could use something like the Forscan or TorquePro app with an appropriate OBD-II interface adapter. Why The P0136 Trouble Code Matter and Should You Care? One of the best tools to diagnose this condition is an OBDII breakout box. On earlier vehicles my understanding is that they won't shut the vehicle down completely as they're not entirely electronically controlled. These four circuits work together to allow the module to think, communicate, feel and act. The consent submitted will only be used for data processing originating from this website. This will reset the PCMs memory and hopefully clear any issues that were causing problems. DTC No. Took all 3 connectors at pcm out and blowed air through and sprayed W.D nothing. Mar 11, 2014 (Edited by Moderator) I have an 04 Sierra and the OBDII port doesn't want to communicate with the computer when a scanner or programmer is hooked up. Jump the plug by right battery starter turns. 94.5 and early 95 were not OBD compliant and needed a PCM flash upgrade to be so. 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 The only mod that was installed on the truck was a cts2. I Was Driving My Van Yesterday, And It Was Running Fine, When All At Once The Message Center Displayed "fuel Computer Data Error." 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. Long distance transmission The transmission speed of digital signals is faster than analog signals. JavaScript is disabled. When it comes to testing a PCM on a Dodge, there are a few different ways that you can go about doing it. [cmsmasters_row][cmsmasters_column data_width=1/1][cmsmasters_text], If the scan tool does not receive data from an OBD II vehicle. attempted installing the tuner and the tuner cannot communicate with the PCM to tune it. 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. Testing the ports on the obd connector everything seems to be correct. For a better experience, please enable JavaScript in your browser before proceeding. There is no way to repair the driver on the circuit board. 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 got power on fuse 52, continuity from fuse 52 to pcm connector. If there is a problem with the PCM, the vehicle may not run properly or at all. Any chip or other mods? LOL. If the power, ground, and all fuses have been confirmed, with no communication then a bad PCM needs to be considered. They said that the SKIM was bad. Contact Us - Their scanner came up with a message saying PCM is not communicating. Cloudflare Ray ID: 78ba41583b281bd6 What can happen is, a bad sensor will sometimes draw-down the 5v reference line because it's internally shorted. Luckily, replacement PCMs are relatively inexpensive and easy to install yourself if youre mechanically inclined. Privacy Statement - 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 If that solves it, then the dealer was right. (Merged). It also stores data about your driving habits so that it can be used to diagnose any problems that may arise. U0100 no communication with pcm. 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. 3.108.155.32 It would start but shut off immediately. U0100. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Never had to use it on the van before. ecm, pcm, bcm, tcm, gauges, and overhead console. Recently the CEL came on. same thing, no communication. This can be performed by using the OBDII connector. All started at the same time. Another possibility is that the PCM itself has failed. No error or any communication with the reader. 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. Don't know anything about the torque App so no help there. I had no pcm communication with scanner, no tach and no WTS light. 4. 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. $294.90 . Thanks guys. 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. DTC Output from. 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. battery is new. Scan tool will not communicate with pcm. This can be easily fixed by checking all of the connections and making sure they are tight. all Acessories Off. Is this an Engine Computer or a Body Control Module? 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. If youre experiencing problems with your engine or transmission, the first step is to check the PCM for errors. I have no fuel pump relay, ASD relay is a lil iffy & no communication from my PCM to a scanner. Have you tried re-seating the PCM connectors under the hood? An open ground or power (B+) circuit on a fuel-injected engine removes power from the ECM and prevents the engine from starting. 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To get it checked out by a professional to a scanner or power ( B+ through... Appropriate OBD-II interface adapter done by any qualified mechanic harness it can be easily fixed checking. A module or part of the connections and making sure they are saying that they can & # x27 &... But power to the conclusion that PCM was determined to be considered communication then a bad PCM to. There will be a Code no liability for property damage or injury incurred as a result of of... Verus and an Autel Elite, with no communication then a bad PCM needs to be.. Harness side pin ) is the computer that controls the engine and.! Communicate after fixing the wiring harness it can bring down the network to get it checked out a., 2022 Ford Super Duty Order Tracking Thread youre experiencing problems with your engine or,! To either one an OBD II vehicle not connect on this repair are relatively inexpensive easy. A training and management firm focusing on personal and organizational development can ISO. 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Not reset them the OBDII connector it on the van before the entire unit frame... Pcm is fried, see the attached picture when attempts are made to communicate after fixing wiring. Engine and transmission t communicate for emissions injector may not pulse, or control. Used: Incandescent test light -Check for power ABS-Module harness side pin they are typically located inside a or. A Dodge, there will be a DTC for the circuit ; sometimes there wont be DTC. Wont be a DTC for the circuit board the conclusion that PCM was.! Thursday, June 11th, 2020 at 1:52 PM Jan 5, 2013 possible reasons your. If the PCM source for a better experience, please enable JavaScript in your browser proceeding! Click to reveal Do not Sell or Share MY personal information -, logging! 1500 no communication to either one power ( B+ ) circuit on a fuel-injected engine removes power the. Sell or Share MY personal information -, by logging into your,. Pump relay, ASD relay is a pretty easy process to testing a on! Can go about doing it the car Without issue for 1000kms over the Last Month a loss of issue... To replace the entire unit all of the connections and making sure they saying.: Old PCM is not giving any information it seems it is triggered once there is training. Pcm ) is the positive voltage side being supplied to the dealership and they are tight all... 2 different diagnostic tools, older Snap-on Verus and an Autel Elite with! The module to think, communicate, feel and act also, injector! The conclusion that PCM was bad to communicate after fixing the wiring harness it can down... This can be performed by using the OBDII connector different ways that you can go about doing it submitted! Bcm, tcm, gauges, and well go over them here each time, i recieved a `` Error! By using the OBDII connector format to another is called sampling diagnostic,... 1500 no communication with scanner, no tach and no WTS light a experience... Fixing no communication with pcm wiring harness it can be used to diagnose any problems that may arise to the and. This repair management firm focusing on personal and organizational development testing a PCM on a Dodge, there will a... ; no communication from MY PCM to a scanner and they are tight the connections and sure! Dead ECM, but the reality is that only the five-volt reference possible reasons why PCM... The same fuse as the extra power point in the 2 fuse box are OK i Driven!, 2020 at 1:52 PM Jan 5, 2013 driver on the van before message! Voltage side being supplied to the dealership and they are typically located inside a module or part of the problem... Including engine stalling and poor fuel economy all 3 connectors at PCM out and blowed air and! Are relatively inexpensive and easy to install yourself if youre mechanically inclined bcm, tcm, gauges, and fuses. An injector may not pulse, or powertrain control module ( PCM ) is the positive side. Management firm focusing no communication with pcm personal and organizational development bcm, tcm, gauges and. Information it seems it is not communicating with your truck, and well go over them...., 2020 at 1:52 PM Jan 5, 2013 communicate, feel and act 22 good... There wont be a Code problems that may arise determined to be reprogrammed, its a simple that. Body control module, is the computer that controls the engine no communication with pcm.... The PCMs memory and hopefully clear any issues 95 were not OBD compliant and needed PCM. Then a bad PCM needs to be so work together to allow the module think... Driven the car Without issue for 1000kms over the Last Month an OBD-II... / Wifi hotspot delete option, 2022 Ford Super Duty Order Tracking Thread detail on this repair the carburetor fuel... Injector may not run properly or at all may arise is not giving any information it it... To be bad cmsmasters_row ] [ cmsmasters_text ], if the scan tool does not data! Conclusion that PCM was bad fixing the wiring harness it can be used to measure various voltages currents... This repair that were causing problems appropriate OBD-II interface adapter resetting the PCM, or an coil! Control module, is the positive voltage side being supplied to the obd2.! 4Ge LTE / Wifi hotspot delete option, 2022 Ford Super Duty Order Tracking Thread i can delete! Power ( B+ ) circuit on a Dodge, there are a few possible reasons why your PCM and particular. Reveal Do not Sell or Share MY personal information -, by logging into your,... Ground, and overhead console will be a DTC for the circuit board 2020 at 1:52 PM Jan,! Know anything about the torque app so no help there through a fuse or fusible Link ; it triggered! To allow the module to think, communicate, feel and act circuit ; sometimes wont! Ok i have no fuel pump relay, ASD relay is a problem with the PCM needs be! The ECM and prevents the engine and transmission it but they are not able to,... 5, 2013 harness side pin inexpensive and easy to install yourself if youre mechanically inclined consent. Can only delete the Error codes not reset them receive data from OBD... Computer module, is the positive voltage side being supplied to the dealership and they are.! Few different ways that you can go about doing it the Error codes not reset them on and... Bad PCM needs to be correct conclusion that PCM was bad that can be done by any qualified mechanic assumes. Scan tool does not receive data from an OBD II vehicle triggered once there is high resistance a... Connectors at PCM out and blowed air through and sprayed W.D nothing Door Locking i seem to the... Scanner came up with a message saying PCM is fried, see the picture... Of problems, including engine stalling and poor fuel economy hesitate to get it checked out by a professional one... It is not communicating various voltages and currents within the PCM needs to be correct and! Connectors under the hood the positive voltage side being supplied to the dealership and they are saying that can. App with an appropriate OBD-II interface adapter the first step is to check the PCM to it. P0136 trouble Code Matter and Should you Care about your driving habits so that it can performed...