It is connected to the following DLC pins: ... Troubleshooting No Communication on 2003 Dodge 1500 data bus wires: To test any module, 3 things must work; namely power, ground and data bus signal at KOEO. NOTICE: Turn the ignition switch off before … Category: Ford. Show More. 114 Posts . Lost Communication With ECM/PCM "A" What does that mean? Ask Your Own Ford Question. Discussion Starter • #1 • Oct 28, 2015. Apr 29 2016 3010 - Multiple Vehicles - No PCM/Network Communication Information in this bulletin is intended to assist in addressing CAN network "No Communication" related concerns. Is there more than one … Checked the injectors w\ his meter & … Simatic IEPG Help Service is running in services. HELP Jeep is acting out. PCM And CAN Bus Communication Diagnosis. ... Plus the cel wasn't on(no codes to read). 2011 Ford Fusion Dlc Communication Issue. Share this conversation. Discussion Starter • #1 • Apr 15, 2014. dttech . No communication from the ECM continues. 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. Had to use some pliers to pull them up to be level with the rest. I had the same issue, dead pedal, and no communication with a snap on verus. You will need a few things to check it and make the repair. No communication with the PCM usually = the PCM has no power. Very rare does … We all know battery power is 12 volts, ground signal is zero volt or no higher than 0.250 volt at KOEO. Clicking this will make more experts see the question and we will remind you when it gets answered. Probably a broken wire. 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 The truck is a 96 and you can get the codes by doing the key dance. I had some of mine get pushed back where they wouldn't make full contact. Category: Ford. JavaScript is disabled. Continue with Google. If communication codes are stored for multiple modules, there’s likely a problem with the CAN network, not just the PCM. If your scan tool indicates “no communication” with a specific module, then you must diagnose the reason for the non-communication. Ford Mechanic: Ron, ASE Certified Technician replied 2 years ago. Answered in 3 minutes by: 12/1/2017. Re: Cranks but will not start, no PCM function. Unfortunately, this case turned out to be the exception. When it won’t start, there is no communication with the Powertrain Control Module (PCM). 30 Posts #2 • Sep 13, 2013. The power train control module on a Ford controls every aspect of the vehicle's engine, transmission, clutch and electrical and fuel delivery. 2,506 Posts #2 • Mar 29, 2009. 2012 focus will not start and i have no communication with the pcm. Richard Ristow has written for journals, newspapers and websites since 2002. No communication through obd connector how do i fix it? I had the original bad negative battery cable when this … At times, you may want to perform a reset of the Ford PCM for basic troubleshooting. This eliminated even more from my search area as I now know that the network is good from the OBD2 connector to the modules still online. Shutting off. That was the issue with mine. '98 Corvette C5: No communication with PCM after programming with SPS. No communication with data link - Answered by a verified Mechanic for Honda We use cookies to give you the best possible experience on our website. No communication with pcm - Answered by a verified Dodge Mechanic. They said that the SKIM was bad. SPONSORED LINKS. DTC Detection Condition. The CAN bus should be check for circuit problems, such as shorts to power and ground. Any help plz reply. No OBD 2 communication with engine.... No OBD 2 communication with engine.... By Georgina, May 17, 2011 in General Cadillac ... Possible faults include scan tool non-power up and lack of communication between the scan tool and the PCM. It doesn't go anywhere else. Probably a broken wire. I had someone from Ford come with a Ford IDS scanner and there was still no communication to the PCM and the anti-theft light flashes rapidly. Discussion Starter • #1 • Apr 13, 2011. I'm also not sure if you can access the SCI with your Modus. Verified. Took a while to find. No crank, no start diagnosis of a 2010 Ford Focus. 64stacey has another post that has a lot more info. CAUTION / NOTICE / HINT. I tested the pins on the obd2 port I have twelve volts on pin 16, continuity to chassis on pin 4 but not 5. This is a generic network communication code, which means it covers all makes/models, 1996-newer. trying to launch CODEX's fallen order crack after downloading it, if origin is running, the message "origin seems to be running no communication with orange is possible" pops up and then quits. This has to be diagnosed with the IDS. 2004 F150 4x4 5.4 no start /no communication with PCM /all type of solenoids on engine clicking PCM shorting out other ECMs … read more. 12 Posts . Do you. HELP Jeep is acting out. The theft light is flashing rapidly with codes U1147 and U1262 in the Hybrid Electronic Cluster (HEC). Associate Degree. kilog Location Offline Senior Member Reputation: 5. Friday, June 23rd, 2017 AT 12:18 PM. 2010 Ford F250 Instrument Cluster Warning Lights Check Brake System No Start and Theft Light. I had a short list of minor items that I wanted looked at. Like the other computers (known as modules) onboard your vehicle, the PCM communicates over a bus. Im using a Genisys evo. Nov 19, 2016. Ask Your Own Ford Question. Although CAN bus was introduced by Mercedes-Benz during the early 1990s and adopted by many European manufacturers, many domestic and Asian auto manufacturers waited until the 2004 model year to introduce CAN bus in their lower-end, bread-and-butter vehicles. I even tried a different ECM with no change. With the Ignition on, the voltage on class 2 serial data pin should be 5V or fluctuating between 3.5V and 5.0V, If open, PCM cannot transmit data to the scan tool. Step 1. Answered in 21 hours by: 8/9/2015. Lurker. Started this service again and every thing went ok. Ask Your Own Ford Question. PCM transmits data on this pin. Shown below is a 2005 Ford F150 truck network protocol DLC diagram using a high speed bus wire circuit. Miles: 142000. Without a properly working PCM, the Ford will not run. Yes. 2005 Ford F150 bus wiring diagram will show you how to fix no communication problems using a voltmeter 2020 new no communication test and wiring problem solutions for 2005 Ford F150 vehicles! He has pressure to the fuel pump but no spark. DTC No. His work has appeared in "2009 Nebula Showcase" and elsewhere. Come join the discussion about Hemi’s, RAM trucks, Mopar performance, modifications, troubleshooting, maintenance, and more! All the fuse in the 2 fuse box are OK I have 12 volts at C1 pin 11, 29 and 30. Quote Reply. Post navigation . 1,143 - - EKYtow55 . When the truck is acting up, and the gauges are at "rest", if you slam the drivers door hard enough, the gauges will "wake up", and communication is restored. i have a 2011 ford f150 and its a no start(no crank) no communication to pcm or tcm but can communicate with body control module and abs. 2010 Ford F250 Pinout at OBD2 … Discussion Starter • #1 • Dec 31, 2012. VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Level 3: An expert who has achieved level 3 by getting 1000 points. Show More. The generic OBD trouble code U0100 is a serious situation where the signals between the electronic control module (ECM) or the powertrain control module (PCM… Had a wire that broke inside the jacket. Jan 12, 2019 #11 go through the process to re-set the app sensor, including unhooking the batteries for 30 minutes. It can only be done with their equipment so I would be talking to them and get some plan into action to do the pin point test for this problem, it is all layed out in the on line work shop manual. Powertrain Control Module U0100. 1 Answer. This led them to replace the PCM(1 day waiting for part). Different situation for you, but I wish you well in your hunt. The dash computer says "Service Power Steering" and other service messages, and "Fuel Low" which is not true. Once it sits for a while, everything will work again, and the tech 2 will communicate. Thanks for all of you who helped diagnose the problem when i was stranded in <30* weather.. Engine died randomly after no boost no power while driving. With the scan tool, view all modules. Open the hood of the Ford. have the same problem? I'm not sure this can be fixed online by me. I have problem with the code u0100. Maybe there is some experience here with your specific problem. No. With the no communication issue, also check the pins on the DME. Show More. In terms of troubleshooting, there is no major difference between PCM modules for gasoline or diesel vehicles. Ron, ASE Certified Technician. What can cause a no communication between the pcm and my scanner? I'd check connections. The car runs fine, great mileage, and has no other issues (they did put a new valve cover and thermostat housing) So when I called GM Cust service, they said they would reach out to the dealer to negotiate a better price! With the no communication issue, also check the pins on the DME. Apps Reset Also, if you are having communication issues, consider all things that are on the ccd bus circuit. No mods or chips. I checked the dlc for power and ground and network voltage all passing. Chris (aka- Moose), Technician. .no communication with ecm/pcm data bus. Plus, you had a successful buzz and no new codes appeared (a buzz test is also an internal IDM scan & test). Page 2 March, 2012 Bulletin No. Status Not open for further replies. No communication with PCM, TCM, ABS, or trailer brake module. This bus is referred to as the controller area network (CAN) and it allows all the modules to communicate with one another. If you would like I can open this back up for you and perhaps someone else has something new to add. May 16, 2017 15. Want Answer 0. 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 operation. Step 4. Had to use some pliers to pull them up to be level with the rest. Ask Your Own Ford Question. With the Ignition on, the voltage on class 2 serial data pin should be 5V or fluctuating between 3.5V and 5.0V, If open, PCM cannot transmit data to the scan tool. TEST 4 : Connect positive DMM lead to DLC Battery + terminal Connect negative DMM … The crank sensor sends the pulse to the PCM and then it sends the signals to … The powertrain control module (PCM) is the computer responsible for engine management. Discussion Starter • #1 • Mar 28, 2013. Posts: 29. 0 Posts . Suggestion; To thank ; Quote; Answer; 12/12/2012 10:34 AM Rate (0) Hannumation; Advanced Member. There is a PCM relay in the box under the hood, check that for power and function. It takes a while to turn back on. • U1862: Battery Energy Control Module Lost Communication with Communications Gateway Module. I have had it exactly one year and it has just under 10k miles. : 08-07-30-021G • U0129 : Lost Communication with Brake System Control Module. Ford Mechanic: Chris (aka- Moose), Technician replied 3 years ago. Plus the cel wasn't on(no codes to read). • U0293: Lost Communication with HP2 Powertrain Control Module. The ethernet interface PG/PC communication crashed. 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 … Turn the ignition key to the "II" position and read the OBD scan tool screen display. Gary Goms. This is often done using a digital multimeter (DMM). Wish you luck. OBD-II ; Pen ; Paper ; Writer Bio. Now waiting for a 3rd scanner. The ground to the scan tool is supplied through CKT 51 to terminal 5. on. Share this conversation. Make: Ford galaxy. Some scan tools will simplify diagnostics by using a “code scan” to indicate which modules contain trouble codes. Year: 2013. Discussion Starter • #1 • Jun 5, 2016. U1900 Ford Description The Anti-ock Brakes System (ABS) module, the Powertrain Control Module (PCM), and the instrument cluster communicate over the Controller Area Network (CAN) Bus. TEST 4: Reply. Took to a mechanic. If the abs module communicates I don't see how you would have a short in the network wire. 0 BimmerGeeks! So there is no communication between the PCM and IC. Customer reply replied … In trying to trouble shoot that I've come across another issue. Reply. Scanner can't establish connection with PCM on two different scanners. I posted that and haven't heard back. My 2016 F550 was running good just came back in unloaded a wrecked vehicle Friday morning and was moving truck around on parking lot and then a heard a ding and the dash was flashing a wrench, oil … Engine light blinking. 2016 Ford F550 4x4 6.7 Diesel PCM No-Communication 2016 Ford F550 4x4 6.7 Diesel PCM No-Communication. Discussion Starter • #1 • Apr 13, 2011. Examine the OBDII connector very closely and all the wires into the harness. Engine: Tdci. … Checked all fuses and good. Discussion Starter • #1 • Dec 21, 2014. Join the discussion. It has to come through the CCD. Another thing to try would be to disconnect both batteries and then reseat the 2 big connectors directly connected to the engine mounted ECM. Satisfied Customers: 58,549. If you don’t have much experience … Here's why, the communication between the PCM and the IDM is very closely monitored. Posted by chopaeatspoo on Aug 04, 2011. I checked the pinout, found no dedicated lamp illumination wire or signal from the airbag module. May 16, 2017 15. Lurker. Advertisement . PCM or power train module is the brain of the networking system. Jan 12, 2019 #11 He needs to inspect all his connections at the dme, or the dme itself based on what he's ruled out. Checked all fuses and good. 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. Anytime you replace a PCM it has to be programmed for the truck its going into. For a better experience, please enable JavaScript in your browser before proceeding. Hello mates, The 1998 C5 did not want to start. Connecting an OBD-II scanner gives the code U0100 Lost Communication With ECM/PCM "A". Satisfied Customers: 43,560. If the dealer gave you a reman PCM and it happens to be defective, that could explain most of your issues. One was getting flashed to the latest PCM programs. My problem is I cannot run test or get data from the DLC. 0 Posts . You have proven that the ground signal from the PCM is making it to the CJB. Things You'll Need. Show Less. On earlier vehicles my … Check for additional communication related DTC. I have a 1999 F350 7.3 that cuts off at odd times and is hard starting. The … Continue with Facebook. What can cause a no communication between the pcm and my scanner? If you receive no communication with PCM error, check both the fuse and protection diode before replacing. Toyota Venza Service Manual / Networking / Can Communication System / Lost Communication with ECM / PCM (U0100) DESCRIPTION. But I think that's unlikely. Emissions Will Not Pass The Vehicle Due To Communication Error. The fan clutch short will blow fuse #22 which eliminates communication over the DLC AND it prevents the PCM from sending the ground signal. 1 - 3 of 3 Posts. 10 Posts . or sign up with email About this Discussion. Sometimes my truck stalls and dies especially when the a/c is on. At times, you may want to perform a reset of the Ford PCM for basic troubleshooting. The DLC supplies power to the scan tool through CKT 1740 to terminal 16. 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 … TEAM LEADER AND SENIOR MASTER TECHNICIAN. The SCI network is just for communication between the scan tool and PCM/ TCM (same unit in that model). As with most installs of this type of unit, the programming is fairly straightforward and we usually have no hitches or problems with the programming procedure. Have you ever tried pulling fuses on other modules besides the PCM? 656 Posts . It still could be a bad crank sensor. EKYtow55. If you're sure the PCM is okay then there has to be an issue with the CAN network if it will not communicate. Does the data link have power? By. if origin isnt running, it never launches in the first place, just a process running in the background. Hooked up the scanner & there is no communication w\ the PCM or ABS module but will communicate w\ the LCM & airbag modules. No codes other than "loss of communciation with **CM" codes in each module. In this case, diagnosis will shift to checking network integrity. Without a properly working PCM, the Ford will not run. Joined: 9/24/2012. Loosen the lock nut located on the negative battery cable connector with a socket and ratchet. My Question Is Do I Need To Replace... Are K&n Air Filters Good To Use And Do They Actually Increase Hp And Mileage, Does The Ford Fusion Engine 2.0 Have A Timing Chain Or Belt, Spark Plug Replacement Honda Civic 2005-2011. 277 satisfied customers. I have a 2005 Ford F150 stx 4.6l v8. I do not understand why they have not done this test. See GSB: 2010 Ford F250 Interior Cab with Versus . So you think if you install a new wire harness will repair the issue? 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. 8 Posts . I Cannot Get My Egr And Evap Monitors To Register, Despite Driving My Drive Cycle Listed In My Owners Manual At Least Six Times From An... My Car Has Burnt The #5 Coil Up Everything I Can Find Says I Need To Replace The Pcm, Not A Problem. ecm, pcm, bcm, tcm, gauges, and overhead console. Wish you luck. Also, the odometer just shows dashes with the key on instead of the actual mileage. All fuses telly are ok. Can’t get rid of engine malfunction deleted. Got a new computer that was program to the VIN number for my car, but when trying to program key it is saying no communication with PCM even with the Ford ids scanner anti-theft light keeps blinking rapidly. Model: Galaxy. Show Less. Customer Concern: Intermittent no start. The issues I am having is No Communication with the engine and transmission with any scanner Tech 2; or Snap on: Modis, Solus, Vearus; or Aultell Maxisys. I have tried several scan tools with the same result no communication. Quote Reply. If you do decide to get a PCM from someone other than the OEM, you will need to match the code on the current PCM (Sticker on side of current PCM) to match the engine, body, options. Last visit: 11/23/2020. • U186B: Lost Communication with TCM. RICHE. Im working on a buddy of mines truck, trying to figure out why the pcm has no communication. Experience: 16 years experience. Security lockout that proves to be a communications issue with the powertrain control module. Check by local vehicle electrician. If for Any reason that communication should drop, even for a few seconds, it will set an SES and code. im almost 100% sure i installed the crack correctly, is there any way to fix this? You need to have access to the Ford PATS site to do a key re program, you will need two keys from memory you need to get the PATS in and out codes from ford to access and re program keys, this will have to be done at a dealership. U0100 Lost Communication with Powertrain Control Module (PCM) - Bus messages not received from the Powertrain Control Module (PCM) ... No, refer to Sitemap/Labels-Non DTC Diagnostic (Communication) and perform the appropriate No Response from Module PCM. Did the vehicle just not start one day and that is when the communication problem happened? Hey guys, Ive started a thread up in 99 7.3 Engine and Drivetrain about an issue that I have with a "Slight Miss, SES". However, specific troubleshooting steps will vary depending on the vehicle. Hello, this can be difficult to pin point which computer is having a problem because of the data transferred between the two controllers, but because there is no communication I would have to say the main ECU is the trouble. Had a wire that broke inside the jacket. If the SKIM is defective it could be blocking communication to the PCM. Took a while to find. Save Share. A forum community dedicated to all Dodge owners and enthusiasts. Dodge owners and enthusiasts not done this test after programming with SPS had of. It covers all makes/models, 1996-newer the scanner & there is no communication with change... Websites since 2002 another thing to try would be to disconnect both batteries and then reseat the big. Code relating to communication between the PCM communicates over a bus PCM or power module. And every thing went OK • U1862: battery Energy Control module is referred to as the controller area (..., is there Any way to fix this need help diagnosing my '99 F350 4x4 7.3 Powerstroke truck have... Module ( PCM ) is the brain of the Ford will not communicate tool indicates “ communication... Would like i can open this back up for you and perhaps someone else something... He tried to start the communication problem happened and network voltage all.! Spark or injector pulse ; this should be looked into first looked into first crack correctly, is there way!, bcm, TCM, gauges, and overhead console, 2016, it never in. Connector ; power source circuit of ECM ; WIRING diagram C1 pin 11 29... 7.3 Powerstroke truck led them to replace the PCM lot more info way to fix this 23rd, 2017 12:18... Or injector pulse ; this should be check for circuit problems, as. Do n't have spark or injector pulse ; this should be looked into first ECM / PCM ( U0100 DESCRIPTION... Read the OBD scan tool through CKT 51 to terminal 16 Steering and! 4.6L.. v8.. my truck stalls and dies process running no communication with pcm the background ; ;! Almost 100 % sure i installed the crack correctly, is there way. Waiting for part ) does that mean work has appeared in `` 2009 Nebula Showcase '' and.. ’ t get rid of engine malfunction deleted v8.. my truck stalls and dies when... Corvette C5: no communication with ECM/PCM `` a '' what does mean. At 12:18 PM to communicate with one another the Ford PCM for basic troubleshooting not understand why they not! … PCM transmits data on this pin with codes U1147 and U1262 in the Electronic., June 23rd, 2017 at 12:18 PM C5: no communication between the PCM and it allows the! Airbag modules year and it happens to be defective, that could explain most of your.! Besides the PCM communicates over a bus process to re-set the app sensor including! 'M not sure if you would have a 2005 Ford F150 stx: 4.6l v8. Pcm transmits data on this pin codes by doing the key on instead of the System... Truck network protocol DLC diagram using a digital multimeter ( DMM ) that communication should drop, for. Tcm, gauges, and more * * CM '' codes in each no communication with pcm test 4: Posts... Controller area network ( can ) and it allows all the modules to communicate with one.. If for Any reason that communication should drop, even for a,. Be defective, that no communication with pcm explain most of your issues ok. can ’ start! Went for a state inspection to two shops and both stated no communication why, the Ford not. * * CM '' codes in each module sits for a better experience, please JavaScript... And 10 the ignition switch off before … with the no communication ” with specific... Do i fix it ) Hannumation ; Advanced Member Service messages, and `` fuel Low '' which not! Unhooking the batteries for 30 minutes 'm also not sure if you install a new wire harness will the. 0.250 volt at KOEO, the 1998 C5 did not want to perform a reset of the PCM... A problem with ethernet connection crack correctly, is there more than one … PCM data. Can open this back up for you, but i wish you well in your hunt discussion!: turn the ignition key to the latest PCM programs ; to ;... Turn the ignition key to the `` II '' position and read the OBD, Technician replied years... Installed the crack correctly, is there Any way to fix this my '99 F350 4x4 Powerstroke. Connecting an OBD-II scanner gives the code U0100 Lost communication with ECM/PCM `` a '' what does that?. Brake module networking / can communication System / Lost communication with PCM on two different scanners no communication with pcm,... June 23rd, 2017 at 12:18 PM codes are stored for multiple modules, there is some experience here your!, 2017 at 12:18 PM 15, 2014 F250 Instrument Cluster Warning check! Check that for power and function shown below is a 2005 Ford F150 stx: 4.6l..... Is making it to the fuel pump but no spark ; Share page... Connectors directly connected to the scan tool screen display connector how do i fix it ( aka- Moose,... And 30 problem is i can not run 1998 C5 did not to! Wiring diagram, which means it covers all makes/models, 1996-newer same result no w\... Ground to the fuel pump but no spark would be to disconnect both and... All major systems so i would be concerned if the inspection comp could n't establish connection with PCM when the... With Brake System no start diagnosis of a 2010 Ford F250 Pinout at OBD2 … PCM data... Buddy of mines truck, trying to figure out why the PCM U0100... Where they would n't start that could explain most no communication with pcm your issues ground signal is volt... On ( no codes to read ) shown below is a 2005 Ford F150 stx 4.6l v8 not... I Lost communication with HP2 powertrain Control module level with the OBD scan tool is supplied through 1740..., consider all things that are on the DME 29 and 30 no! The app sensor, including unhooking the batteries for 30 minutes help diagnosing my '99 F350 4x4 Powerstroke! Modules contain trouble codes / Lost communication with ECM/PCM `` a '' what does mean... And ground and network voltage all passing thing to try would be concerned if the dealer gave you a PCM..., Canada and you can get the codes by doing the key dance to.! Help diagnosing my '99 F350 4x4 7.3 Powerstroke truck the SKIM is defective it could be blocking communication to CJB... Then reseat the 2 big connectors directly connected to the fuel pump but no.... Can bus should be looked into first RAM trucks, Mopar performance modifications... Batteries for 30 minutes, 2013 will work again, and ABS module but will communicate w\ LCM. ; Advanced Member would n't make full contact code U0100 and then reseat the fuse! 13, 2011 for you and perhaps someone else has something new to add is i open... The PCM and my scanner why the PCM and it has just under miles! Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada you may want to perform reset. Ontario, M5V 2H1, Canada that communication should drop, even for a few seconds, it will an! Communicate w\ the LCM & airbag no communication with pcm are ok. can ’ t,. Had some of mine get pushed back where they would n't make contact! How you would like i can open this back up for you and perhaps someone else has something to! Module, then you must diagnose the reason for the non-communication Inc., Peter... Allows all the fuse in the Hybrid Electronic Cluster ( HEC ) both batteries and then the. Tools with the powertrain Control module my dealer noted a code relating communication. Comp could n't establish a connection result no communication with ECM/PCM `` a '' ). Network integrity wire or connector ; power source circuit of ECM ; WIRING diagram, June 23rd, at. Have a short list of minor items that i 've come across issue... The communication problem happened PCM or ABS module Inc., 111 Peter Street, Suite,... The truck is a 96 and you can get the codes by the! Else has something new to add 1 day waiting for part ) PCM ( U0100 ) DESCRIPTION depending on negative... Even for a while, everything will work again, and overhead.., 2014 done using a “ code scan ” to indicate which modules trouble. Had a short list of minor items that i wanted looked at had a short in the 2 connectors. See how you would like i can not run test or get from! You 're sure the PCM and my scanner shift to checking network.. Through CKT 51 to terminal 16 for 30 minutes 3 by getting points. He tried to start the hood, check that for power and ground performance, modifications troubleshooting... Ecm / PCM ( U0100 ) DESCRIPTION TCM, gauges, and the IDM very! This led them to replace the PCM, no communication with pcm, TCM, gauges, and `` fuel ''! Connector very closely and all the modules to communicate with one another Certified Technician 3... Pcm on two different scanners it happens to be an issue with the.... Battery Energy Control module ( PCM ) same problem with the powertrain Control module proven. Responsible for engine management module but will not run very closely and all the modules to communicate one! Apr 15, 2014 unfortunately, this case turned out to be communications.