Mechanical problems such as faulty ball bearing can trouble the operation of your motor. With an Onboard Diagnostic (OBD) scanner, testing a car computer is so easy. These three methods are the best solutions for electric motor testing. But, when it comes to other motors, you will have to find out the designed values according to the model. Anything goes wrong with the ECM computer during the test; it would need to replace. #what is meggar#insulation resistance measure by meggar#measuring instruments through meggar#Meggarhow to test a motor with meggerhow to test a motor using a. Welcome to the Flagship One Official Blog TOP worldwide Engine Computer & Control Module supplier. Onboard Diagnostic (OBD or OBD II) scanner manufacturers are constantly updating OBD II scanners for better performance. Make sure the power to the component; otherwise, you wont find circuit reading. ECM Motor Testing . Note: While testing wires, always choose a location that is exposed and close to the motor. If your car engine computer needs to be repaired instead of replaced then that will also add to the amount of labor required. And an ECM computer is an expensive part of your car. An example of data being processed may be a unique identifier stored in a cookie. 1 0 obj Repair costs and labor at a dealership could be anywhere from $1,000 to $2,000 depending on the vehicle. There are various ways to test an engine control module (ECM). Tech Tip 6: Always pull the connector and not the wires. Testing ECM computers would be really easy if you use OBD II for testing. 1) Insulation resistance (IR). Certifications: B.E.E. The car battery needs to be fully charged when you drive on the road. By following these ways, you can test ECM computer. Unplugging and Cleaning the Sensor The first step entails removing the sensor from the engine block. 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 A good and properly charged battery should read at least 12.6 volts with the engine off, or 13.7 volts with the engine running. After opening up the ECU board, If you see any broken components or corrosion, the ECU computer will need to be replaced. Locate pins 12 and 15. One thing that I do know for certain is that Fuse Box A2049006709 has been replaced at one point Ensure the airflow settings are correct for the installed system using the charts. So, bring your multimeter and set-up for the circuit and ensure you use the circuit with the best range available multimeter gadgets. In the ohmmeter mode, connect the meter to the plug and monitor the resistance as you wiggle the cord where it enters the enclosure. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. If the issues do not return after test driving the vehicle then that is a good indicator that there was an issue with your original unit. Digital multimeters (DMMs) measure two or more electrical values, such as voltage, amperage, or resistance. If there is no resistance or the resistance is uneven, the motor is likely faulty. On older vehicles, typically models 1995 and older, switching your ECM for another unit is a sufficient mode of testing. Link the red probe to the red wire. <> I reset and test my ECM after every new major install and so should you. For this motor test, we are going to use two multimeters; Circuit Tester A and Circuit Tester B. On the other hand, if the motor does not pass the 2nd test, the problem is in the connector or the cable. The price range of a multimeter is from $25 to $450. 4). There is a signal fault or the message is faulty. Dec 5, 2009. Here are the most common ECM failure symptoms: Testing a car ECM computer requires specialized knowledge, tools, and software. If you test your car ECU with an On-Board Diagnostics II (OBD-II), you will get codes on the OBD-II scanner, and those codes notify the issues in your engine control module.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'caralso_com-leader-3','ezslot_17',154,'0','0'])};__ez_fad_position('div-gpt-ad-caralso_com-leader-3-0'); Using a Volt Ohm Meter known as a multimeter, you will read the amps on the multimeter. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); The world's top supplier of programmed OEM (Original Equipment Manufacturer) Powertrain Control Modules (PCM), Engine Control Modules (ECM), Injection Control Modules (IDM), Body Control Modules (BCM), Transmission Control Modules (TCM), Engine Control Units and all other car control units. I show you where the test voltage goes and how to. References(1) diagram https://www.computerhope.com/jargon/d/diagram.htm(2) internet https://www.livescience.com/20727-internet-history.html. With this method, we are going to check whether the motor circuit is closed or open with a simple continuity test. An example of data being processed may be a unique identifier stored in a cookie. If the motor fails Test 2, you might have to replace the connector and the cable. So, it is always better to check the wires and connections, before jumping to any conclusions. A25464 "The Electric steering lock has a malfunction. We come out with new videos every few days from my job sites, service calls, and the training shop! If you are thinking about how to test ECM computer, you come to the right place because today I will show you how to test ECM computer by yourself. Thank you. There are two types of multimeter: analog multimeter and digital multimeter. The multimeter should be in AC voltage mode. But not here. Some of the OBD2 error codes are: ME Motor Electronics Don't try this at home.Supervision is needed by a licensed HVAC Tech while doing this as Experience and Apprenticeship garners Wisdom and Safety.If you want to support the ACSERVICETECH Channel and receive more HVAC content, check out www.Patreon.com/acservicetechWe've Partnered with TruTechTools.com! So if you are driving an old car made before 1996, then with a simple swap, you can test the car ECM computer.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'caralso_com-large-mobile-banner-2','ezslot_12',122,'0','0'])};__ez_fad_position('div-gpt-ad-caralso_com-large-mobile-banner-2-0'); To swap to your car, first, you need to find a replacement unit that matches the original part number. However, for this process, you need some DIY skills. 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. Basically, there are three different tests that can be done using a megohmmeter. Knowing what a multimeter is and how it works is always helpful before knowing how to test ECU with a multimeter. Follow the process of testing ECU step by step, and you will get the precise test result of your engine control unit computer. The process for testing a car computer is not always as straight-forward as testing other modules within your vehicle and oftentimes may be difficult and time-consuming. If they can't, lubricate them. If delays are too long, then reset them using the manufacturer's chart. Tech Tip 3: A True-RMS meter isn't needed to check high-or low-voltage to the motor. To address these two concerns efficiency and noise the electronically commutated motor (ECM) was developed. Any type of faulty wires or connectors can be the reason for a bad motor. Multimeters make simple everyday testing so easy.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'caralso_com-box-4','ezslot_3',147,'0','0'])};__ez_fad_position('div-gpt-ad-caralso_com-box-4-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'caralso_com-box-4','ezslot_4',147,'0','1'])};__ez_fad_position('div-gpt-ad-caralso_com-box-4-0_1');.box-4-multi-147{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}. The wide range of the ECM motor, high efficiency, and programmability gives it a virtually unlimited range of performance characteristics. In this case, you might have to replace the motor. In any auto shop or many retail shops, you will get a multimeter easily. However, if you still have some doubts, feel free to go through the article one more time. If the motor hums but the belt doesn't move, the motor control board is the problem. Diagnostic manual comes with: Wiring diagrams. However, if you dont get such a reading, there might be an issue with your motor. Now set the multimeters to resistance mode. Hello, I'm Sam. ECM 3.0 is a communicating motor that consists of four (4) control wires connecting the board to the motor. One thing to always keep in mind, however, is to always consult the manufacturer's guide to confirm proper configurations and demands. Remember that ECM motors have high voltage going to them at all times and are turned on and off by low voltage commands), the testers are listed below: <>/Font<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 720 540] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Sometimes, these readings can be smaller than 170 ohms like when there is an internal short circuit, the readings can be smaller than 170 ohms. ), 3 Ways To Recondition A Car Battery That Wont Hold Charge. Step 4 - Check starter motor current draw. For every version of ECM computer resetting and testing processes are the same. Reminder: there is something that is a total failure in the ECU, and even the ECU itself can be a total failure when you test with a multimeter. Remember, this car computer testing process is only for old cars containing OBD I, not modern cars.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'caralso_com-leader-2','ezslot_13',123,'0','0'])};__ez_fad_position('div-gpt-ad-caralso_com-leader-2-0'); To diagnose the car computer, the process of elimination is a very useful way. The gauges on the instrument cluster stay where they were when power is lost. Its important to remember that this test will only work on vehicles with computers that dont require programming which would rule out all newer model vehicles. 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. There is a short circuit to positive or an open circuit Thats why without an ECU, the car cannot be running. Connector pin outs. 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. If you are experiencing problems like loss in fuel economy and engine performance then you may only need to have your unit reprogrammed. How Much Does it Cost to Replace Your Engine Control Module? This is the simplest of the tests. Afterward, we can check the motors condition according to the two values. The price of a multimeter depends on quality and precision. If this is the case, rev the motor up and down and observe the reading on . You should apply the required settings for the multimeter before connecting it with the motor. Most connectors are also keyed. First, make sure you unplug the electrical connection connected to it. If the motor is operating at 240VAC with the jumper in place, the motor will be permanently damaged. Now, connect the remaining two black probes of the C and D to the end of the extension cable. This is the process for Circuit Tester A. How to Replace a PCM ECM ECU Module (Engine Computer) on 2005-2006 Ford Escape / Mercury Mariner / Mazda Tribute, Car Engine Computers No Longer the Brains, How to Replace a PCM ECM ECU (Engine Computer) on a 2001 Dodge RAM Truck Pick-up, How to Buy the Right Replacement Module for Your Chrysler PCM, The P0138 Trouble Code and How To Deal With It, 1999 Ford Truck (F-Series) 7.3L F81F-12A650-BF PCM ECM ECU Control Module (Engine Computer) Replacement, How to Choose the Best PCM for Your Ford Vehicle, 5 common Problems With Cars and How to Check Them, 2004 Jeep Liberty Problems To Keep In Mind. If the motor fails Test 1, you might have to replace the wiring and the capacitors. X]@u;v\(}%VH?!}v}P'!pK\R+=Z;+&(xe d. You should also get a good quality digital multimeter. Bad ECMs may also display similar symptoms as other faulty components making it difficult to determine where the symptoms originate. First thing you need to do when you are testing an ECU with a multimeter that properly set up the multimeter. You can conduct a test with a multimeter using the following three steps. Electrical engineering is my passion, and Ive been in the industry for over 20 years. Also, check and clean the blower wheel, secondary heat exchanger, and evaporator coil. Please comment and ask for videos that you would like to see in the future! The electrical motors that were used in HVAC applications were AC induction style motors that were either single-or multi-speed they'd run at one speed for heating, another for cooling, and sometimes a third speed for two-stage systems. Turn the ignition key to the on position. You can even test ECU with a multimeter which is not so hard. With the right guide, you can easily identify a faulty ECU with a multimeter. Using alligator clip accessories on the test leads is often best for securing test leads in place. 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. However, if the windings are broken, the readings should be over a few thousand ohms. The service requires full JavaScript support in order to view this website. For a good understanding, here is a simple guide. Contact Us: (844) 289-0033 | After Hours Emergency Contact: (800) 217-4698 . There are also a few checks you can perform if the ECM motor is not running. One of my career paths started as a general handyman, so I also have a lot of experience with home improvement I love to share. People get confused to understand the difference between ECU and ECM or PCM or TCM, which is not really hard to understand. endobj Oftentimes, a faulty ECM can be a result of a burnt circuit board due to poor wiring or other electrical mishaps. At this point the meter should be displaying a fairly constant AC voltage. Any fluctuation in the digital readout may point to a defect. Correct any voltage issues before proceeding. 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. B219500 "THE POWER SUPPLY OF CIRCUIT 30 IS < 8.5 V THE LIMIT VALUE FOR ELECTRICAL VOLTAGE HAS NOT BEEN ATTAINED. If you follow these steps correctly, you can identify the condition of any motor. On the 120VAC systems, there should be a jumper between terminals one and two. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'caralso_com-box-3','ezslot_6',138,'0','0'])};__ez_fad_position('div-gpt-ad-caralso_com-box-3-0');You better remember, ECM Computer, car computer, Engine control module computer are the same, people say what they are accustomed to. The multimeter is most commonly used for measuring the battery voltage and diagnosing faulty components and complex diagnostics. If you need any help let me know. And you can test the car computer at home.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[728,90],'caralso_com-medrectangle-3','ezslot_5',145,'0','0'])};__ez_fad_position('div-gpt-ad-caralso_com-medrectangle-3-0'); When an auto repair shop costs you high for engine control module testing, learning how to test your car computer will save you money and time. After a certain amount of years companies may stop manufacturing new control modules resulting in a limited supply of those modules leading to used vehicles being used to facilitate an ECM replacement. And both of the tools you as a car owner should have in your vehicle. 4 0 obj First, turn the power off. Ive been studying automotive for around 9 years now. The problem with these types of motors is that they use a lot of energy because they run at full amp draw at all times even during off-demand cycles. Also check for any fault codes present on the control boards. Whether you are getting a trouble code, your fuel economy is declining, your vehicle stall or misfire , a check engine light or non existent engine performance you should always think the ECM could be the culprit and you do not really need an auto repair shop to do the basic steps. Connect the OBD II scanner tool to the diagnostic port of your car, which will let you know whether or not there are any issues in your car by codes. Tech Tip 3: A True-RMS meter isn't needed to . For instance, if you are using a 100V motor for this test, you will get a 170V reading on the multimeter. In addition to this, certain vehicles contain engine control modules that are very hard to find due to limited production which will also increase the price if a replacement is required. You can then connect it to a multimeter and set the multimeter to the AC setting. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Here is how to troubleshoot ECM HVAC blower motor.Tools That Can Make You Easy Money: https://www.dirtymaintenancenation.com/diy-tools-for-men/If you'd like . Look on the outside of the motor for other potential problems, like holes or smoke points. You should not avoid maintaining the safety procedure to test the engine control unit, and you need to read the caution carefully. Start your car and allow it to run for a few minutes. By elimination process, you will check almost all of the cars components, letting you know the current cars components situation. It does this by analyzing the data it receives from individual sensors and transmitting that data to a variety of actuators that will adjust the way they perform based on the communicated information. Grab your digital multimeter and set it to DC volts. A faulty engine control unit can bring various issues to your car, such as sudden shut-off, car wont start, and poor engine performance. You better remember An ECM is one of the essential components to run the car. Because there is an intricate wiring system connected to your ECM and because the ECM is equipped with sophisticated software, testing can become very involved. All rights reserved. A new ECU needs to be programmed into your vehicle because the ECU computer needs to be programmed for your cars model and make. While other components may normally display clear-cut symptoms when faulty, symptoms within your engine computer may not be as obvious. For this motor to operate, make . This kind of situation happens because of the excessive axial or radial load. When connecting the probes to the wires make sure to connect them properly. Tech Tip 7: When checking any plug connector, the meter leads are most likely larger than the terminals or socket. In order to get those codes you will need to plug your scanner into the OBD-II port and from there it will notify you of any codes which are provided by the ECM so you can perform the proper diagnostic test. And the vehicle temperature is determined by the computer. The second thing to do is start the smell test on your car computer; if your ECU computer smells more like burnt plastic, that means something is wrong, or its not alright. You can now start the engine and let it idle. Because OBD-I engine computers do not require programming upon installation, they will start and run your vehicle once installed. Verify that the correct thermostat input voltage is present at the interface of the main control board on the furnace or air handler. The same way that wear and tear on mechanics happens over a period of time, strain can also as efficiently as possible. In order to find a suitable replacement, you need to locate the part number on your original unit and find a replacement with a part number that matches. As technology becomes more developed, companies becoming more reliant on electronics to control different aspects of the modern vehicle. Ignition System No-Start Diagnostic Manual $3.99 USD All of the information you need to diagnose a misfire or a no-start problem (caused by the ignition coil, the ignition module, or the crankshaft position sensor). Here we are going to discuss all three motor tests. We can do this by tracing the voltage through each component. After factoring in the cost of the part itself, the cost of labor must also be considered. Loose or broken low-voltage wires can potentially cause intermittent problems. Some tools and indications will help you to diagnose ECM computer.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'caralso_com-medrectangle-4','ezslot_4',103,'0','0'])};__ez_fad_position('div-gpt-ad-caralso_com-medrectangle-4-0'); Scanner and visual inspection is the most common method to test ECM computer. No matter what you do to your engine control unit (ECU), whether you reflash your car ECU or test the ECU with a multimeter, you have to conduct a visual inspection around the ECU computer. Check the bearings to make sure they can spin freely. With over a decade in the business, we are the most reliable source when it comes to programming services for replacement engine control modules. M0qV5~:>+R^+[P_t|2MqA5_xv43Q'_T&t(BnPa~=>h?>] document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); What Is An Engine Control Unit And How Does It Work, Multimeters make simple everyday testing so easy, How To Properly Ground A Car Battery | Ground Automobile Electrical system, 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? 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. ECM control modules are factory programmed for specific manufacturer applications. B127A54 "Component compass module is not calibrated", EZS Electronic Ignition Lock For further visual inspection to test the ECU computer, you might need to open up the Engine Control Unit (ECU) board for further visual inspection.