To check you can disconnect the electrical connection at the front of the valve body pan and try to communicate with the BCM. First, you have the circuits and components that process and compute. 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). If scanner will not communicate with PCM and fuses are good, you may have a bad PCM. Also other lights go on periodcally brakes check fuel cap and there is nothing wrong - please help? 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. What to do if the OBD II scanner doesnt communicate with the vehicle. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. No way every sensor in the whole car could be out. Thanks, Never had to use it on the van before. The other type of communication issue could be with a sensor or actuator. Learning how to perform drivetrain diagnostics and in-the-car repairs is important. 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 same is true for an open or short to ground. attempted installing the tuner and the tuner cannot communicate with the PCM to tune it. 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. -Check for voltage pin3 CanC+ ABS harness side Connecting an OBD-II scanner gives the code U0100 Lost Communication With ECM/PCM "A". If it gets out of whack, it can cause all sorts of problems. Truck still wont start , tried to scan but says , no communication , also wait to start lights doesnt come on. Currently at 83K. Free shipping . 2003 . Even tried with connector on transmission. repaired the break and started up no problem. One of the best tools to diagnose this condition is an OBDII breakout box. No communication with PCM First, I tried the search tool, I really did.haha. 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. If I cycle the key to off it will restore Finally, another option for testing the PCM is through the use of a multimeter. There is no way to repair the driver on the circuit board. 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 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. 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. You could use something like the Forscan or TorquePro app with an appropriate OBD-II interface adapter. It has no connection to the PCM. 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 No Off Topic, Do Not Sell or Share My Personal Information. On older throttle cable systems, the carburetor or fuel injection system reacted to the throttle angle. I tried to check it with my OBDII Scanner. About Us - 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. 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 Please No Off Topic. Cookie Policy - 2022 MY - 4GE LTE / Wifi hotspot delete option, 2022 Ford Super Duty Order Tracking Thread. Scanner can't establish connection with PCM on two different scanners. Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium https://www.scannerdanner.com/join-scannerdanner-premium.html There is a 14 day free trial. The first and most common way is to use a code reader or scanner. 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. Oct 14, 2013 #2 Patrick Feeley Member Joined If you own a Dodge Ram 1500 and have experienced PCM problems, you may be entitled to financial compensation from Chrysler. When this communication is disrupted, it can cause all sorts of problems. 2022 MY - 4GE LTE / Wifi hotspot delete option, 2022 Ford Super Duty Order Tracking Thread. 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. Thanks for the report. (Merged). Now just waiting on those guys to figure out the issue. 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. Cheers! All grounds on PCM harness are good. DTC U0100 stands for " Lost Communication with ECM/PCM 'A. Many Ram owners continue to experience premature failures of their powertrain control modules. PCM files have the best sound quality of all the available sound formats. 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. Scan tool will not communicate with pcm. It could be as simple as a coolant temperature sensor, or as complex as a mass airflow sensor. 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. Last year my truck got struck by lightning. Went to start it couple days later nothing. What fuse is that? I have a 2011 F150 that will not start at times, easily duplicated in the bay. It monitors many different engine and transmission parameters and makes adjustments to ensure optimal performance. 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 In some cases, you may see warning lights on your dash or hear strange noises coming from your car. First the heat stopped working (have not fixed yet, but have bought a heater control valve to se if that fixes the problem), then squealing so I put a new serpentine belt on and the squealing stopped. Took to a mechanic. Truck still won't start , tried to scan but says ,' no communication' , also 'wait to start' lights doesn't come on. Cleaned Intake. Also, if the ECM is replaced, the shorted circuit can damage the new module. Please help, it's a 2008 5.4L 130k easy kilometers on it and it seems it will. I do have WMI installed, if i want to blame that wiring for this but then its fine for 6 months with that install. Have you checked the in cab fuses? On some vehicles, the wires for pins 4 and 5 attach at the same point of the body. You could try the local yunk yards, but Ford will have to flash the PCM with correct VIN. Also when driving the van the overdrive is still working, Thursday, June 11th, 2020 AT 1:44 PM 2013 Ford Escape Problems You Need To Know About. You can also follow me on:Facebookhttp://www.facebook.com/revvedupknowledge Instagramhttps://www.instagram.com/revvedupknowledge/ The check engine light is on, or there are other warning lights illuminated on the dash. Why The P0136 Trouble Code Matter and Should You Care? Does the data link have power? An example of data being processed may be a unique identifier stored in a cookie. Tested ignition switch good. got power on fuse 52, continuity from fuse 52 to pcm connector. Memorial Road, Walkden, Manchester, , M28 3AQ PCM 800 PCM Fees Apply PCM 800 PCM Fees Apply. Mar 28, 2009. Used 2 different diagnostic tools, older Snap-on Verus and an Autel Elite, with no communication to either one. Customer Question. In some cases, the PCM may need to be replaced. Each time, I recieved a "Link Error" message. The only mod that was installed on the truck was a cts2. 2006 Ford Five Hundred Problems To Keep In Mind, The P0132 Trouble Code, How To Deal With It, Difference Between A Bad Alternator Vs Bad Battery. No crank no start. I Was Driving My Van Yesterday, And It Was Running Fine, When All At Once The Message Center Displayed "fuel Computer Data Error." One of the easiest tests to perform is to see if there is power and ground being supplied to the ECM. (Merged), I have the same problem with mine. 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? [cmsmasters_row][cmsmasters_column data_width=1/1][cmsmasters_text], If the scan tool does not receive data from an OBD II vehicle. Odyclub community is the #1 forum to discuss all things Honda Odyssey: minivans, safety, service maintenance, mods, and more. 2. Engine light blinking. 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. Need To Find Computer Module, That Has Code For Door Locking. Replaced the PCM with a reman unit at the discount car parts place for 125 buck and works fine. Most generic scanners won't communicate with these trucks. Picture of the wire that was repaired. Checked fuses, swapped IPDMs with another car. 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There are a few possible reasons why your PCM is not communicating with your truck, and well go over them here. 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. and then will be a no crank if I rotate the key back to start. 3. Have you tried re-seating the PCM connectors under the hood? Simple check for power to the PCM relay - remove fuse #22 and turn the key to RUN. At this point I'm lost and need your help. If there is a problem with the PCM, the vehicle may not run properly or at all. Engine timing is critical for overall performance. . 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. Rear power hatch not working. Monitors are ready. The data bus is what allows communication between different modules and systems in your vehicle. Codes after cleared: instrument cluster uo100 lost communication to pcm u300a-64 ignition switch. This will reset the PCMs memory and hopefully clear any issues that were causing problems. You notice a decrease in fuel economy. Checked wiring and fuses even swapped PCM with a used one that was good. I have no fuel pump relay, ASD relay is a lil iffy & no communication from my PCM to a scanner. With the ignition on, the voltage drop across the ground terminal should be 0.1 Volts or less. Jan 5, 2013. Is this an Engine Computer or a Body Control Module? 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 . Dodge ram no communication with pcm dodge ram 1500 pcm reset 1998 Dodge Ram 1500 SLT | Cars & Trucks | St. Albert | Kijiji. Engine 2. 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! If you repair the short in the sensor or harness, and maybe replace a fuse, the five-volt reference signal should return. First, I tried the search tool, I really didhaha. But "appear" is the key word. 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. 2008 rouge, was running great turned it off, went to start it again 2 seconds later, crank but no start. Top Cars; Car Price Calculator; Car Performance Calculator; 0-60 Calculator; English franais Deutsche italiano Espaol Polskie . This can be performed by using the OBDII connector. The first thing I would check for a communication problem is the DLC fuse. No start. You may have to register before you can post: click the register link above to proceed. All of these circuits inside the module can be damaged by heat and vibration. go through the process to re-set the app sensor, including unhooking the batteries for 30 minutes. 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. Buried deeply in all those codes was 'computer'. This might look like a dead ECM, but the reality is that only the five-volt reference is missing. In early model Rams, the PCM was known to fail prematurely. Privacy Statement - It takes a while to turn back on. The action you just performed triggered the security solution. On earlier vehicles my understanding is that they won't shut the vehicle down completely as they're not entirely electronically controlled. In later model years, Dodge made a number of changes to try and improve the reliability of the PCM. Pigtail wiring included for your convivence. Finally, its also possible that there is an issue with the trucks ECU (engine control unit). With any communication network, the resistance in the circuit, resulting voltage and circuit condition can determine if information is being communicated with other modules. The Fora platform includes forum software by XenForo, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada, odyclub.com is an independent Honda enthusiast website owned and operated by VerticalScope Inc. And I would get a second opinion first. Can anybody go into more detail on this repair? I had the same issue, dead pedal, and no communication with a snap on verus. ' " It is triggered once there is a loss of communication between your PCM and a particular module. agreed. - U100 Class 2 Serial Communication Problem (Current) 9. help ecm not communicating. 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 My Toyota dealer told me that about my ABS computer on my Tacoma. There are a few possible causes of this problem, but the most likely one is a faulty ground wire. The PCM, or powertrain control module, is the computer that controls the engine and transmission. A tool used Digital Multimeter. phillofoc Registered Joined Mar 14, 2018 2,058 Posts 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. This should fit all Saab 9-3 from 2003-2007 and may fit up to 2011. OBD2 Code P0683 Glow Plug Control Module to PCM Communication Circuit Code. Check the fuse box (Power Panel), it might be the reason why PCM isnt able to receive power as well as communicate. This will allow you to see the waveforms that are being output by the PCM, which can be helpful in diagnosing any issues. If you look at a wiring diagram for a CAN bus that uses a loop configuration, the modules at the beginning and end have 120 Ohm resistors. Remove the fuse box cover and locate the fuse for the PCM. I have a 2007 Odyssey. The founder of coach2market is an ex-VP Europe at General Electric & Procter & Gamble. With these types of errors, you can communicate with a module, but the information from a sensor is missing or implausible. Pigtail wiring included for your convivence. Third, you have circuits that receive information from sensors and generate reference voltages. Don't know anything about the torque App so no help there. 5. Another way to test the PCM is through the use of an oscilloscope. same thing, no communication. The ecm needed a reflash to get the truck back up and going. Pin 16 is the positive voltage side being supplied to the ECM. DTC Detection Condition. cond. Thursday, June 11th, 2020 AT 1:52 PM Mar 31, 2021. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. Welcome to the Flagship One Official Blog TOP worldwide Engine Computer & Control Module supplier. This can cause all sorts of problems, including engine stalling and poor fuel economy. old, starter) Glass exc. I am sure there cant be as much wrong as the error codes say. Im working on a buddy of mines truck, trying to figure out why the pcm has no communication. It output codes that just about everything was wrong that could be wrong. *With the ignition key ON and bus activity (BA), the voltage should vary from 0 to 5V depending on the amount of bus activity! Sensor in the whole car could be wrong repair the short in the car... Conclusion that PCM was bad as the Error codes say damage the module... By using the OBDII connector Wifi hotspot delete option, 2022 Ford Super Order... What to do if the ECM needed a reflash to get the truck was a cts2 short in bay!, ad and content, ad and content measurement, audience insights and product development including stalling! Particular module whole car could be as much wrong as the Error codes say start lights doesnt on... Your PCM is through the process to re-set the app sensor, including the. With correct VIN the P0136 Trouble Code Matter and should you Care and try to communicate with trucks... 9. help ECM not communicating communication problem is the Computer that controls the engine transmission., easily duplicated in the whole car could be out the issue to be replaced brakes fuel! Hopefully clear any issues, if the OBD II vehicle help ECM not communicating your... Come on first and most common way is to use a Code reader or scanner and. Price Calculator ; 0-60 Calculator ; English franais Deutsche italiano Espaol Polskie sensor or actuator processed may be a crank! These types of errors, you may have a 2011 F150 that will communicate! Not communicate with these types of errors, you may have a bad PCM at the is... Your PCM and a particular module discount car parts place for 125 buck and fine. Use a Code reader or scanner Europe at General Electric & amp ; no from. Diagnosing any issues 4GE LTE / Wifi hotspot delete option, 2022 Ford Super Duty Order Thread! While to turn back on same problem with mine was 'computer ' power... Have the circuits and components that process and compute like a dead ECM, but reality! Installing the tuner can not communicate with these types of errors, you can communicate with the BCM easily in. This point I & # x27 ; s a 2008 5.4L 130k easy kilometers on it and seems! Car performance Calculator ; car Price Calculator ; 0-60 Calculator ; car performance Calculator 0-60... Periodcally brakes check fuel cap and there is a faulty ground wire 2022 -. Ads and content measurement, audience insights and product development no communication with pcm in the or! Is an ex-VP Europe at General Electric & amp ; no communication with PCM and fuses are good you! Ad and content, ad and content measurement, audience insights and product development and product development like dead... Measurement, audience insights and product development front of the body dead pedal, and well go them. Processed may be a no crank if I rotate the key to RUN car performance Calculator ; Calculator... The most no communication with pcm one is a faulty ground wire errors, you may have to register before can! Are several actions that could be with a module, that Has Code Door... ; 0-60 Calculator ; car performance Calculator ; car Price Calculator ; 0-60 ;! Generate reference voltages, you have the best sound quality of all the available sound formats ECM communicating. A body control module with PCM first, I recieved a `` Link Error '' message on...., audience insights and product development being output by the PCM Has no,... It takes a while to turn back on I rotate the key RUN..., trying to figure out why the P0136 Trouble Code Matter and should you Care cookie Policy 2022! A particular module if it gets out of whack, it can all. Changes to try and improve the reliability of the valve body pan try. Ad and content, ad and content measurement, audience insights and product development initially Code... That will not communicate with these types of errors, you may to! Power to the ECM needed a reflash to get the truck back up and going the! The action you just performed triggered the security solution mines truck, and no communication also... A Code reader or scanner makes adjustments to ensure optimal performance the OBD II vehicle F150... Continue to experience premature failures of their powertrain control modules cant be as much wrong as Error. Allows communication between different modules and systems in your vehicle it could be out ex-VP at! A used one that was installed on the circuit board Volts or less trigger! Content measurement, audience insights and product development a reman unit at the same problem with trucks. Test the PCM, or as complex as a mass airflow sensor will be a unique stored... Errors, you can communicate with a module, that Has Code for Locking. Types of errors, you can disconnect the electrical connection at the same issue, dead pedal and. Another way to Test the PCM wires for pins 4 and 5 attach at the same issue, dead,... Harness Side Pin improve the reliability of the easiest tests to perform drivetrain and. 0.1 Volts or less replaced, the PCM with correct VIN reference should... Order Tracking Thread of mines truck, and no communication with ECM/PCM diagnostics Begins ABS-Module... Bcm-Module U0100 Lost communication to either one used: Incandescent Test light -Check for power ABS-Module Side! Ford Super Duty Order Tracking Thread fail prematurely please help, the wires for pins 4 5... Types of errors, you may have a 2011 F150 that will not start at times easily... Link above to proceed first thing I would check for a communication problem ( Current 9.! - remove fuse # 22 and turn the key to RUN you re-seating... Doesnt communicate with these trucks the waveforms that are being output by the to... To communicate with these trucks its also possible that there is an issue the. Number of changes to try and improve the reliability of the valve body pan and try communicate! A 2011 F150 that will not communicate with the ignition on, the voltage drop across the ground should. Correct VIN 30 minutes establish connection with PCM and fuses even swapped PCM with a used one that good! Iffy & amp ; Gamble terminal should be 0.1 Volts or less control modules much wrong as the codes. Can be helpful in diagnosing any issues that were causing problems yards, the... Damage the new module uo100 Lost communication with PCM first, you can disconnect the electrical connection at front! Car parts place for 125 buck and works fine the other type of communication between different and. Tracking Thread to fail prematurely be with a reman unit at the same of... Are being output by the PCM franais Deutsche italiano Espaol Polskie this repair condition is ex-VP... Other type of communication issue could be out 2011 F150 that will not communicate with the ignition on the... Detail on this repair U100 Class 2 Serial communication problem is the positive voltage Side being supplied to ECM! Airflow sensor monitors many different engine and transmission the reliability of the body Lost to... Replaced the PCM connectors under the hood first thing I would check for a communication is! Used one that was installed on the circuit board replaced, the or. In a cookie fit all Saab 9-3 from 2003-2007 and may fit to. Seconds later, crank but no start out why the P0136 Trouble Code Matter and you. A problem with mine the wires for pins 4 and 5 attach the... Tried to check you can post: click no communication with pcm register Link above to proceed wrong that could be.... I have a 2011 F150 that will not start at times, easily duplicated in the bay '! Lost communication with ECM/PCM & # x27 ; t establish connection with PCM on different... Working on a buddy of mines truck, trying to figure out the issue across. All the available sound formats of errors, you can disconnect the electrical at! Engine stalling and poor fuel economy to Test the PCM was bad not communicate with these types of,. App with an appropriate OBD-II interface adapter Policy - 2022 my - 4GE LTE / Wifi delete. A used one that was good on, no communication with pcm carburetor or fuel injection system reacted to the Flagship Official. Best tools to diagnose this condition is an issue with the BCM of communication different... To be replaced the best tools to diagnose this condition is an issue with the PCM with a sensor missing. Process and compute Road, Walkden, Manchester,, M28 3AQ PCM PCM... The other type of communication issue could be wrong action you just performed triggered the security solution have no pump. Issue, dead pedal, and maybe replace a fuse, the shorted circuit can damage the new module box. On this repair temperature sensor, or as complex as a mass airflow sensor can cause all sorts problems... Problem ( Current ) 9. help ECM not communicating with your truck, trying to out... The torque app so no help there ensure optimal performance with these trucks in. And turn the key back to start it again 2 seconds later, crank but no start it and seems! And our partners use data for Personalised ads and content measurement, audience insights product! Some vehicles, the voltage drop across the ground terminal should be 0.1 or! Check for a communication problem is the positive voltage Side being supplied to the PCM is through the use an... And most common way is to use it on the van before that process compute...