how to test ecm motor with multimeter

If any of these is present, clean them out. Tech Tip 3: A True-RMS meter isn't needed to . 3 The best way for a deduction to be made is by making sure that all the sensors and actuators are functioning properly; we need to ensure that the sensors are supplying the correct amount of power to the ECM and that all components are able to receive the correct signals that the computer provides. Locating the Camshaft Sensor/Crankshaft Sensor Tech Tip 6: Always pull the connector and not the wires. So, when you notice these issues in your car, you should test the ECM properly and quickly. This motor may take a while to come to a complete stop with selected delays and the normal ramp down. If the motor works, the belt will move. 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. You should not avoid maintaining the safety procedure to test the engine control unit, and you need to read the caution carefully. When connecting the probes to the wires make sure to connect them properly. And you will also get a PDF, where you will see the diagnosing process of a bad ECU with a multimeter.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'caralso_com-medrectangle-3','ezslot_10',145,'0','0'])};__ez_fad_position('div-gpt-ad-caralso_com-medrectangle-3-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[320,50],'caralso_com-medrectangle-3','ezslot_11',145,'0','1'])};__ez_fad_position('div-gpt-ad-caralso_com-medrectangle-3-0_1');.medrectangle-3-multi-145{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:50px;padding:0;text-align:center!important}. Make sure you go through the diagnostic steps completely before replacing the motor. 2,128. Note: While testing wires, always choose a location that is exposed and close to the motor. % B126322 "Control unit N10/1 front SAM control unit with fuse and relay module has received no LIN message from component Compas module The best way to check a treadmill's motor is to use the treadmill itself. Tech Tip 1: Don't automatically assume the ECM motor has failed. Basically, there are three different tests that can be done using a megohmmeter. Under the TradeFox brand, Supco helped bring their\r inventions to life through additional engineering and manufacturing. 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.. Afterward, we can check the motors condition according to the two values. In this case, you might have to replace the motor. Tech Tip 3: A True-RMS meter isn't needed to check high-or low-voltage to the motor. Grab your digital multimeter and set it to DC volts. endobj Ensure the airflow settings are correct for the installed system using the charts. 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. If all the connections are good, you will get a reading of 1.7 times the power supply reading. Because OBD-I engine computers do not require programming upon installation, they will start and run your vehicle once installed. Afterward, compare the two values. Installing a new control on a failed motor will result in the new control also failing. 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. Whatever the reason, youve got yourself a faulty motor. More about us. Connect the black wire of the multimeter to the ground circuit and the red lead to the MAF sensor. Step 3: While rotating the shaft, if you can hear abnormal friction or a sound, it is a signal for misalignment or damage. If delays are too long, then reset them using the manufacturer's chart. It is solely up to the technician viewing this to determine if he/she has the proper safety training and experience needed to work on HVACR systems and components examined in this video. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. When you start visual inspection on your car computer, the first thing to see is PINs. The reference voltage was not available in the past, but now its a very essential and familiar use in the car. 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. Thats why you should learn the whole process of testing an ECM computer in your car. Then connect the black probe to the white wire. You can test your car ECM using an OBD-II scanner and a multimeter (Volt Ohm Meter). Here are the four steps on how you can test ECU with a multimeter: Step 1: Setup Multimeter Step 2: Visual Inspection Step 3: Start Testing With A Multimeter Step 4: Record The Reading Step 1: Setup Multimeter First thing you need to do when you are testing an ECU with a multimeter that properly set up the multimeter. B16EF15 Left Standing light has had a malfunction. In any auto shop or many retail shops, you will get a multimeter easily. For Step 2, a simple swap can be done. For more information, please see our Move the switch from side to side and, with a trigger switch taped so it remains on, press on the brushes and turn the commutator by hand. Also, check and clean the blower wheel, secondary heat exchanger, and evaporator coil. A25408 "The Electronic steering lock has a malfunction. After 1996 automobile manufacturers began using Onboard Diagnostics II (OBD2), a diagnostics system in the vehicle. In this HVACR Video, we go over the Troubleshooting of the ECM 3.0 Variable Speed Blower Motor and Testing with and without the TecMate Pro. <> But if you want to test your car ECU computer, you have to have some specialized knowledge and experience of testing an ECM computer. Turn on the multimeter and set it to read voltage. You should receive a reading of zero or nearly zero. If your ECM is faulty then it will often throw codes for modules that are not faulty or will continue to throw codes for a faulty part even after that part is replaced. In this test, we are going to measure the winding resistance of the motor. As a result it may sound like a dealership is unavoidable, however, there are companies that specialize in the procurement and programming of engine computers. Mechanical problems such as faulty ball bearing can trouble the operation of your motor. Connect pins 1 and 3 to the common side of the 24 volt transformer (fig. If you get a reading according to the ratio mentioned above, that means the motor is getting proper voltage. Once more, this will differ based on the brand, model, and features of your vehicle. Observe the voltage reading on the multimeter. The multimeter is most commonly used for measuring the battery voltage and diagnosing faulty components and complex diagnostics. Firing orders. And not only for testing an engine control unit, there are various components you can test with a multimeter (aka Volt Ohm Meter). You will be redirected once the validation is complete. 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. With those codes, you will be able to diagnose the ECM properly. and our How to Easily Test an ECM Motor Using the SUPCO TradeFox ECMPRO Universal Tester Sealed Unit Parts Co. 2.08K subscribers Subscribe 8.2K views 2 years ago Test any type of Electronically. 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. These Videos are all part of our Training Series on HVACR Service, Installation, Preventative Maintenance, General Knowledge, and Tips. 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? A swap is only effective for older cars. For the example above, we used a 100V motor. Use a multimeter or an ohmmeter to test the voltage of the electric motor. After factoring in the cost of the part itself, the cost of labor must also be considered. 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. h6 hHvih8;zbLE|\0&tN]%3y MYa}l*ahs,7[J;S-,- :W^=?.b{O>[.B{p;-Unv|@{%uWrvN 7#.7xg73F$=wa8+vr4oG9XP2;}^. 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. In input process elimination, The battery has a major role. So, if you learn how to test a car computer in your car, you will be able to help others to do it and save their money. The first step in testing your ECU with a multimeter is to get the multimeter ready for the test. If there is a problem with the engine computer then it will not process the data correctly and it will affect the way the outputs function. Ive been studying automotive for around 9 years now. Welcome to the Flagship One Official Blog TOP worldwide Engine Computer & Control Module supplier. So, you never know when you may have to test your motor. Look for loose plugs and/or loose pin connections in the plug, and for burnt, bent or loose pins or seats. Both of these motors will have a high voltage harness as well. If your car engine computer needs to be repaired instead of replaced then that will also add to the amount of labor required. Invented by a real HVAC technician looking for a simple way to check if an Electronically\rCommutated Motor was good or bad in order to make a \rquicker diagnosis for the necessary repair. 24 VAC operating voltage 24\" wire length Short circuit protection Convenient magnetic case No batteriesAs a manufacturer, SUPCO supplies to Wholesale Distribution only. Set the meter function to the amps AC or DC setting as appropriate. Step 2: Then, turn the shaft clockwise and counterclockwise. Module cost from these online stores are as little as $100.00 and even the rarest modules like cummins diesel control modules are sold at a fraction of the price when compared to the dealership. 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. 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. Repair costs and labor at a dealership could be anywhere from $1,000 to $2,000 depending on the vehicle. So, if you have proper knowledge about testing an ECM, program software, and tools, you can test your ECM at home without any difficulty. Onboard Diagnostic (OBD) is an engine code scanner that can access vehicle data. They require a clamp accessory to measure motor inrush current. 1 0 obj OBD scanner is used to check the car vehicle engine and communicate all the possible glitches in the vehicle. Before going to the junkyard you only need to find out the exact product details such as the part number that is on your original unit and match it up with the replacement module. Plug the probes from the multimeter into the two wires you identified coming out of the evaporator motor together, then turn the multimeter on and set it to resistance, or Ohms. (The one-min interval is an industry practice that allows everyone to take the reading at the same time. Using a scanner, you can find out your car engine code, which will show you ECM computer testing results. 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. Although installation of the part itself is a straight-forward process, testing the vehicle after installation to ensure everything is running properly can be time-consuming. This guide will show you how to test ECM with a multimeter easily and quickly. For most models of ECM motors, it is normal for the motor to rock back and forth on start up. 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 . Its almost always cheaper to go to your local junkyard or used parts store rather than purchase the part directly from the dealership. Continue with Recommended Cookies. Now you need to turn the key on and see the driver supply; if the driver supplies power, then move the meters negative lead over to the positive battery post precisely. 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. The reference voltage is used for sensors and switches. If there are any breaks on the checked circuit, the multimeters will start beeping. 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. 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.. Make sure the circuit is connected with a harness when you test the engine control module because if the harness is disconnected, you wont get any results. Dealership grade equipment is also used to program these units so there is no reduction in engine performance. M0qV5~:>+R^+[P_t|2MqA5_xv43Q'_T&t(BnPa~=>h?>] If the motor fails Test 03, you might have to replace the motor. What's a Realistic Conversion Rate for Service Agreement Sales? %PDF-1.5 You can also buy an ECM motor tester on Amazon to test the module (plug the applicable plug into the low voltage section of the module and clip the leads to 24v somewhere, then turn the tester on. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Im not only an electrician, but I also like machinery and anything to do with carpentry. Joined Jun 7, 2009. 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. Condenser Fan Motors ; Contactors and Relays ; Cuber . You need to disconnect the wires attached to the motor to remove it from the appliance. The following process of testing ECU with a multimeter is one way you can run a test. Take a look at some of our related articles below. 6106 No CAN message was received from control unit Combustion engine or transmission 2023 Endeavor Business Media, LLC. After testing the fuse and relay, you will need to perform the amperage draw. Should You Repair or Replace that HVAC Unit? I have other variable speed motor diagnosis videos on determining if the actual motor is bad or the module on the side of the motor is bad. People get confused to understand the difference between ECU and ECM or PCM or TCM, which is not really hard to understand. This is typically shown as a "Hz" value on your multimeters turn dial. The price of a multimeter depends on quality and precision. The service requires full JavaScript support in order to view this website. 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. Performing a visual inspection is something that anyone can do right from home and is one of the first tests you should perform if a faulty ECM is suspected as ECM plays a very serious role in your vehicle. Component pin outs. Once you have determined the codes you want to use process of elimination to deduce whether the computer is at fault. There are various ways you can test the engine control unit with a volt-ohm meter.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'caralso_com-large-mobile-banner-1','ezslot_12',153,'0','0'])};__ez_fad_position('div-gpt-ad-caralso_com-large-mobile-banner-1-0'); There are cautions for you when you test your engine control unit with a multimeter, and you should know them properly, whether you test or replace your car ECU. Tech Tip 1: Don't automatically assume the ECM motor has failed. When you get a reading that is equal to 1.7 times the power supply, that means the motor is working properly. Set your multi-meter to the Rx1 setting. The primary purpose of the engine computer is to ensure that your vehicle is running smoothly and efficiently. 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. You should also get a good quality digital multimeter. Contact Us: (844) 289-0033 | After Hours Emergency Contact: (800) 217-4698 . The service requires full cookie support in order to view this website. The price range of a multimeter is from $25 to $450. No matter how you test the engine control module, finding the right issues in your car is the main job.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[468,60],'caralso_com-netboard-1','ezslot_23',131,'0','0'])};__ez_fad_position('div-gpt-ad-caralso_com-netboard-1-0'); So, if you dont have proper knowledge about testing ECM computer, you should learn from a professional. The process for testing an engine computer is not always as straight-forward as testing other modules within your vehicle and oftentimes may be difficult and time-consuming. Using thin leads will prevent the terminals from being damaged by a voltage check. (Really? Connect the negative Meter lead to a good chassis ground in the vehicle and the positive lead to the suspected tachometer wire. Wait for programmed delays to time out. Education: University Of Denver - Electric Engineering Manage Settings Check all terminal/plug connections both at the HVAC system control board, and at the motor. U050400 Implausible Data were received from control unit left front door Electrical engineering is my passion, and Ive been in the industry for over 20 years. 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! The multimeter should be in AC voltage mode. A multimeter loads the circuit under test to some extent, with full-scale deflection of 50 microamps (amps) or "ohms per volt." Here are four simple steps you need to consider while diagnosing the ECU system of your car: Get your multimeter and set it up to test for the circuit using the best range available multimeter gadgets. The wide range of the ECM motor, high efficiency, and programmability gives it a virtually unlimited range of performance characteristics. Make sure that there is no call for "continuous fan" on the G terminal. I think that I can handle this problem well on my own in the future. Online companies like Flagship One, Inc. have created a space where you can order the exact unit required for your vehicle and have it shipped to you. You can also check to see if the unit is burnt by opening the unit and inspecting the circuit board to see if there are any fried components. This process is automatic. (1). 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. Connect both of the black probes to the black wire. 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. Test any type of Electronically Commutated Motor on the market with the technician-invented SUPCO TradeFox ECMPRO Universal Tester. How Much Does it Cost to Replace Your Engine Control Module? 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. The multimeter should be in AC voltage mode. 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. This gives me a unique ability to give you expert home improvement and DIY recommendations. 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. Most of the time, its hard to notice the sign of ECM failure in a car. First, check for proper high-voltage and ground at the five-pin connector at the motor. 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. One of the most important functions of an ECM is its ability to alert the driver when there is an issue with the vehicle. 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. The multimeter is also known as a volt-ohm meter. There has to be a better way. For instance, if you are using a 100V motor for this test, you will get a 170V reading on the multimeter. You can replace an ECM by yourself. Dec 5, 2009. ECM 2.3 Troubleshooting: What is the motor doing or not doing? However, if you still have some doubts, feel free to go through the article one more time. On the 120VAC systems, there should be a jumper between terminals one and two. Plug the red test lead into the amperage or "A" jack. Since there is almost always a factor that contributes to ECM failure, addressing the underlying cause is a priority. If you use a 100 VAC motor, you will get 100V reading on the multimeter. Please comment and ask for videos that you would like to see in the future! Then, we will compare it to the originally designed values of the motor winding. Connector pin outs. For this motor test, we are going to use two multimeters; Circuit Tester A and Circuit Tester B. 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: That is why today we are going to look at how to test a motor with a multimeter. The same way that wear and tear on mechanics happens over a period of time, strain can also as efficiently as possible. Turn the ignition key to the on position. Now check the voltage of the multimeter. 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. An engine control unit (ECU) monitors most of the sensors in the engine bay to bring out the highest performance of your vehicles engine. There is an implausible signal" In addition to being time-consuming, replacing your ECM can be costly so it is important to be sure your vehicles problem truly lies within the ECM. Bad ECMs may also display similar symptoms as other faulty components making it difficult to determine where the symptoms originate. (Really? Verify that the correct thermostat input voltage is present at the interface of the main control board on the furnace or air handler. Thats why first you need to check the battery voltage to the engine computer, as it provides a sufficient amount of voltage through the ignition switch, through the sensors, and the fusses because the battery produces voltage to the Engine computer through these input units. The gauges on the instrument cluster stay where they were when power is lost. Replacing an Engine Control Module (ECM) is simple, and you dont need to know too much about it. 2 0 obj A visual inspection will also help you to detect any external error in the ECU. Some vehicles are notorious for their engine computers tendency to become fried due to faulty spark plugs. You can test your VSS to make sure it's functioning properly by using a device called a multimeter. ), 3 Ways To Recondition A Car Battery That Wont Hold Charge. A high speed or heavy duty motor can see problems where the rotor conductors are crimped into the comm segments. Check the setting of the jumper pins or DIP switches on the manufacturer's control board. Diagnostic manual comes with: Wiring diagrams. If so, the following guide is for you. A PCM can be tested with a multimeter this process is used to measure the amount of current passing through to the PCM from the battery at a time. If you follow these steps correctly, you can identify the condition of any motor. Here we are going to discuss all three motor tests. ECM 3.0 is a communicating motor that consists of four (4) control wires connecting the board to the motor. 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. If it's higher than the manufacturer's recommendations, then correct the airflow restriction.If the motor does not shut off at the end of the cycle, check the delay times and wait for delays to time out. On the other hand, if the motor does not pass the 2nd test, the problem is in the connector or the cable. THE LIMIT VALUE FOR ELECTRICAL VOLTAGE HAS NOT BEEN ATTAINED. After you open up the car computer board, now you need to look for any broken components or corrosion in the ECU board. However, for this process, you need some DIY skills. B210C16 "THE POWER SUPPLY IS OUTSIDE THE VALID RANGE. If fault codes are present, consult the manufacturer's recommendations to resolve the problem. If the motor hums but the belt doesn't move, the motor control board is the problem. Here are the four steps on how you can test ECU with a multimeter: Step 1: Setup MultimeterStep 2: Visual InspectionStep 3: Start Testing With A MultimeterStep 4: Record The Readingif(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'caralso_com-large-leaderboard-2','ezslot_5',149,'0','0'])};__ez_fad_position('div-gpt-ad-caralso_com-large-leaderboard-2-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'caralso_com-large-leaderboard-2','ezslot_6',149,'0','1'])};__ez_fad_position('div-gpt-ad-caralso_com-large-leaderboard-2-0_1');.large-leaderboard-2-multi-149{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}. Flagship One Inc, is the world leader of engine control module repairs, programming and testing, feel free to contact us if you have any question or concerns. And if you dont know much about ECM computer or have no experience, you should first need to learn the ECM testing procedure from a professional or an experienced person. Getting your ECM replaced or repaired at a mechanic or dealership is one of the more costly expenses and there are a few factors that determine that price; rarity of part, age of vehicle, and labor are among these main contributors. *****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.

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how to test ecm motor with multimeter