The multimeter should be in AC voltage mode. Please enable JavaScript on your browser and try again. See you next time at ACSERVICETECH Channel!Check out All of the ACSERVICETECH Playlists- https://www.youtube.com/channel/UCOZR-1IqsAer9wzlvFgb4mA/playlists?view_as=publicACSERVICETECH is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.You can enter Amazon through this http://amzn.to/2aenwTqHere is the Link for the TecMate Pro- http://amzn.to/2jIP0tyHere is the Link for the newer UEI DL469 Multimeter- http://amzn.to/2jw4ePJHere is a link for the Supco Magnet Jumpers http://amzn.to/2gS4h6zHere is the Link for the newer UEI DL479 Multimeter with temp sensor- http://amzn.to/2jtsUbJHere is the link to the 2 pairs of alligator clips- http://amzn.to/2CtIL5zHere is a link to the JB 6 CFM Vacuum Pump http://amzn.to/2nqbvo8Here is the Link to the Appion Blue 3/8\" to 1/4\" Vacuum Hose- http://amzn.to/2uYlVycHere is the Link to the Appion Red 3/8\" to 1/4\" Vacuum Hose- http://amzn.to/2uYg6RoHere is the link to the Appion Valve Core Removal Tool- http://amzn.to/2uYr8WLHere is the link to the Yellow Jacket 1/4\" by 1/4\" heavy duty hose straight- http://amzn.to/2umtcodHere is the link to the CPS Vacuum Micron Gauge- http://amzn.to/2v1nM3OHere is the link to the Supco Vacuum Micron Gauge- http://amzn.to/2v1JRiAHere is a link for RectorSeal Bubble Gas Leak Detector http://amzn.to/2ckWACnHere is a link to the UEI DL389 Multimeter used in the videos- http://amzn.to/2xAdaJfHere is the link to the Fieldpiece ST4 Dual Temp Meter- http://amzn.to/2wc1ME3Here is a link to the Air Acetylene Torch setup- http://amzn.to/2aQalsb Here is a link to the 15% Silver Brazing Rods- http://amzn.to/2gVLyLcHere is a link the Nitrogen Regulator http://amzn.to/2bXdR5fHere is a link to the Nitrogen Flow Meter http://amzn.to/2brvoBgHere is a link to the Digital Refrigerant Scale used in the videohttp://amzn.to/2b9oXYl Here is the Link for the Yellow Jacket Refrigerant Manifold Gauge Set used in the videos http://amzn.to/2aenwTqHere is a link to Refrigerant hoses with valves used in the videos http://amzn.to/2aBumVIHere is the link for the Imperial Kwik Charge 535-C- http://amzn.to/2uipEI6 Here is the link to the Fieldpiece SDMN6 Dual Pressure Testing Manometer with Pump-http://amzn.to/2jyK5KaHere is a link for the Supco Magnet Jumpers http://amzn.to/2gS4h6zHere is a link to 1 gallon of JB Vacuum Pump Oil http://amzn.to/2mGrlXyHere is a link to the General Tools digital Psychrometer http://amzn.to/2cSHsi1Here is a link to the Fieldpiece SDP2 Digital Psychrometer- http://amzn.to/2nniMVRHere is the link for the Ratcheting Service Wrench http://amzn.to/2dGV4NhHere is a link to the Appion G5 Twin Recovery Pump http://amzn.to/2dGSEyr Here is a link to the Malco Sheet metal scribe- http://amzn.to/2qCwu9DHere is a link to the Malco 90 Degree Right Hand Vertical Snips- http://amzn.to/2qHHpu4Here is a link to the Malco 90 Degree Left Hand Vertical Snips- http://amzn.to/2qHF564Here is the link for the Malco 3\" Blade Combination Snips- http://amzn.to/2dz7EjcHere is the link for the Irwin Wire Stripper/Cutter/Crimper http://amzn.to/2dGTj2VThank You, ACSERVICETECH Visual Inspection of the Control Module ECM When inspecting your control modules on your vehicle it is important to be conscious of any physical defects you may come across such as frayed wires or corrosion without the need to visit an auto repair shop. Another thing you should keep in mind is that when you set up the multimeter, use the current breakers with one of the leads to keep your multimeter safe and avoid any accidents. Diagnostic manual comes with: Wiring diagrams. Using thin leads will prevent the terminals from being damaged by a voltage check. The current reading on the multimeter should not be more than 1.2 amps because if the amps are more than that, that tells you there is anything wrong with the car computer. Afterward, we can check the motors condition according to the two values. A visual inspection will also help you to detect any external error in the ECU. First, make sure you unplug the electrical connection connected to it. Education: University Of Denver - Electric Engineering If you are still confused, study the diagram shown above. <>>> The consent submitted will only be used for data processing originating from this website. Tech Tip 1: Don't automatically assume the ECM motor has failed. Since there is almost always a factor that contributes to ECM failure, addressing the underlying cause is a priority. Programming and updates installed are also responsible for optimizing the engines performance. www.ecmweb.com is using a security service for protection against online attacks. So, follow these steps. ECU is an electronic device that controls vehicles electrical features to ensure optimal engine performance. ), 3 Ways To Recondition A Car Battery That Wont Hold Charge. If there is no resistance or the resistance is uneven, the motor is likely faulty. 2023 Endeavor Business Media, LLC. If you see ECM computers PINs are good and intact. Simply stated, if all inputs and outputs are in working order then you know the problem is a result of the way the computer itself is processing the data. After reading this post, I could check my ECM (thank God my car just had bad spark plugs). When you start visual inspection on your car computer, the first thing to see is PINs. That is why today we are going to look at how to test a motor with a multimeter. Setting up your meter for a parasitic draw test. <>/Font<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 720 540] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Usually, the car will regain power in around 45 minutes to an hour but has taken up to 3-4 hours before and seems dependent on the temperature before the power is restored and the car will start. Connector pin outs. This will only be effective when working on an older vehicle. Tech Tip 4: If you must replace the 2.0, 2.3, or 2.5 control module, then be sure to use a direct replacement from the manufacturer. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. If you find any corrosion or burnt components on your unit then a replacement is required and further diagnosis will need to be done to determine the cause of the burnt unit or corrosion. If you need any help let me know. The multimeter should be in AC voltage mode. For instance, if you are using a 100V motor for this test, you will get a 170V reading on the multimeter. For Step 2, a simple swap can be done. You should first take out the ECM to make sure the pins are in an upright position and check inside the plug and casing to make sure there is no corrosion for all wire connection . Components that provide power such as the battery, ignition switch, and the fuses are called inputs while components that receive data such as spark plugs, fuel injectors, and the starter are called outputs. Some of the OBD2 error codes are: ME Motor Electronics Pre-Programmed Engine Control Modules ECM. First, turn the power off. Now check the voltage of the multimeter. Oftentimes, a faulty ECM can be a result of a burnt circuit board due to poor wiring or other electrical mishaps. 4 0 obj This is the process for Circuit Tester A. They use high-speed, digital signal processing to filter out electrical noise and capture inrush current as the circuit protector sees it. The sensors connected to your car ECU computer cannot make the correct adjustment when your battery voltage is low or not right. After testing your ECM computer, you should come up with a certain result of your ECU.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'caralso_com-mobile-leaderboard-1','ezslot_17',130,'0','0'])};__ez_fad_position('div-gpt-ad-caralso_com-mobile-leaderboard-1-0'); ECM computer testing is necessary for your car. (Really? After factoring in the cost of the part itself, the cost of labor must also be considered. However, if the system is excessively noisy, doesn't appear to change speeds in response to a demand for heat or cooling, or is having symptoms during the cycle such as a tripping limit or freezing coil, there are a number of checks that can be performed. Confirm there are no limits, rollouts, or safeties tripped. Acid/Oil Test Kits ; Air Cooled Condensers . Once more, this will differ based on the brand, model, and features of your vehicle. In addition to being time-consuming, replacing your bad ECMs can be costly so it is important to be sure your vehicles problem truly lies within the ECM. But, before you replace the ECU or ECM, you should know the proper procedure to replace the ECM computer in your car.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'caralso_com-narrow-sky-1','ezslot_20',129,'0','0'])};__ez_fad_position('div-gpt-ad-caralso_com-narrow-sky-1-0'); If you unplug or disconnect the ECU, the vehicle wont run because an ECM is the brain of a vehicle. Although labor is the bulk of the expense when replacing your engine control module at a dealership or mechanic, it is possible to cut costs on the actual part itself. A failing engine control module is not something that should be taken lightly, your vehicle will perform on reduced power, your plug wires could be causing a short to the ECM so be sure to check them! Using a Scanner and Process of Elimination. The process of elimination is done by checking the cars Inputs and Outputs. 07 grandprix has multiple codes that every time its cleared difference codes return but some are the same just would like to get the ecm tested and repaired if possible. *****TECHS**** Find your nearest SUPCO distributor here: http://bit.ly/2ZB0cd8Learn more: https://www.supco.com/web/supco_live/products/ECMPRO.htmlThis product update video contains general technical information provided for educational use only. Because OBD-I engine computers do not require programming upon installation, they will start and run your vehicle once installed. Getting your unit reprogrammed costs significantly less than having your unit replaced or repair costs so knowing when a replacement is necessary is important when looking to cut costs. Anything goes wrong with the ECM computer during the test; it would need to replace. 1 0 obj B126322 "Control unit N10/1 front SAM control unit with fuse and relay module has received no LIN message from component Compas module After the required connections are made, you apply the test voltage for a period of one min. (The one-min interval is an industry practice that allows everyone to take the reading at the same time. Also, using a multimeter is very easy and simple. Ive been studying automotive for around 9 years now. What's a Realistic Conversion Rate for Service Agreement Sales? Step 1 - Check the Power Supply Voltage with Circuit Tester A Just like in the diagram shown above, first, connect the red probe of the multimeter to the red wire; connect the black probe to the black wire. Start the vehicle and wait for it to idle down to normal idle speed. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media. U050500 Implausible Data were received from control unit right front door, FSCU Control unit fuel pump Tech Tip 7: When checking any plug connector, the meter leads are most likely larger than the terminals or socket. ECU computers collect data from several sensors, and with data, ECU regulates the cars operating system.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'caralso_com-medrectangle-4','ezslot_1',103,'0','0'])};__ez_fad_position('div-gpt-ad-caralso_com-medrectangle-4-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'caralso_com-medrectangle-4','ezslot_2',103,'0','1'])};__ez_fad_position('div-gpt-ad-caralso_com-medrectangle-4-0_1');.medrectangle-4-multi-103{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:250px;padding:0;text-align:center!important}, A multimeter is a tool that is used to measure electrical values such as principally voltage (volts), current (amps) and resistance (ohms), and more. Connect the black wire of the multimeter to the ground circuit and the red lead to the MAF sensor. If the motor fails Test 03, you might have to replace the motor. B210C16 "THE POWER SUPPLY IS OUTSIDE THE VALID RANGE. When you test your car ECM computer or car computer, you also need to understand the engine computer failure indication. Dealership grade equipment is also used to program these units so there is no reduction in engine performance. ECM Service Tech Tips. Start by disconnecting and removing the VSS from your engine so you can test it. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); What Are Some Examples of Motherboard Diagnostic Tools / Software / Utilities, 10 Proven Things To Put In Gas Tank To Ruin Car Engine, Top 10 Dead Car Battery Tricks Help You To Start A Dead Car, How To Jump Start A Dead Battery Without Another Car (Fast), Causes Manual and Automatic Transmission Will Not Engage in Any Gear, 8 Things That Can Drain A Car Battery When The Car Is Off, Car Battery Dead Will It Recharge By Itself? Turn on the multimeter and set it to read voltage. Tech Tip 2: When it's necessary to disconnect the power from the HVAC system, it's always a good practice to verify that voltage has been disconnected, by using a voltmeter. Yvc,Nl{nNibb)4AZ:1H;. ]^g^uRn~G. Please enable cookies on your browser and try again. Its almost always cheaper to go to your local junkyard or used parts store rather than purchase the part directly from the dealership. You can conduct a test with a multimeter using the following three steps. With an Onboard Diagnostic (OBD) scanner, testing a car computer is so easy. Here are five useful ways to test ECM computer: OBD or OBD II code scanner Visual Inspection Car Battery Check A Swap Process of Elimination 1. Place the amp clamp around the positive battery cable with the arrow on the amp clamp facing towards the starter. Now connect the red probe of Circuit Tester E to the red wire. 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.. In this test, we are going to measure the winding resistance of the motor. Connect 24 volts from R to pin 12 and pin 15. If fault codes are present, consult the manufacturer's recommendations to resolve the problem. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Of course, the increasing popularity of the ECM motor has led to a number of questions from technicians on how to service and troubleshoot ECM-driven systems. Now you need to see if the output units are working properly or not.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'caralso_com-leader-4','ezslot_15',125,'0','0'])};__ez_fad_position('div-gpt-ad-caralso_com-leader-4-0'); Ensure the Injector, the Starter, and the Spark Plugs get the right signal from the ECM computer. So, lets get started. Manage Settings Put the multimeters positive lead to the battery ground post, and then you need to touch the multimeters positive lead fleetingly to the proper terminal of the modules harness connector. By following these ways, you can test ECM computer. After opening up the ECU board, If you see any broken components or corrosion, the ECU computer will need to be replaced. ECM 2.3 has a 16-pin control wiring harness running from the board to the motor. These Videos are all part of our Training Series on HVACR Service, Installation, Preventative Maintenance, General Knowledge, and Tips.
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