Also take the Alt to Advance since you tried a AZ and see if their machine agress the Alt is good. An alternator will rapidly charge a somewhat flat battery from as little as 12/1500rpm depending on when the voltage regulator trips. The voltage should not drop below nine or ten volts. A multimeter’s Diode Test mode produces a small voltage between test leads. We will break it down into simple steps, so anyone can read their meter after reading this article. With the engine at 2000 RPMs, the meter should read between 14. C172 alternator Thanks once again for the replies. The main purpose of such a meter is to know does you alternator charge or not. A short description of how to wire in an ammeter or voltmeter for your car from someone who understands the principles. 8V AGM Charge pack to 100%. An alternator produces alternating current (AC), but cars work on direct current (DC), making a conversion necessary. If it is producing electricity it will be creating a magnetic field and you will be able to feel the pull on the metal. How to Test Your Car Alternator with a Multimeter Personal_Finance / Motoring Aug 13, 2019 - 12:59 PM GMT. Read also: How to check a fuse in a car. Set the knob on the multimeter to the DC AMPS setting to perform a test of the direct current emitting from the mower's alternator. Connect the positive probe to the battery positive (+) post. An alternator produces direct current (DC) but can also produce alternative current (AC), which can damage the various electrical components of your vehicle, includin. To do this, raise the seat and unplug the two-prong rubber connector with the brown and orange wires. A multimeter car battery test is one way to take a deeper look into the problem. The bridge is located in and fastened to the alternator case. Bosch introduces the latest, user-friendly, hi-tech Auto Electrical Test Bench that enables easy, fast and accurate testing of a wide range of alternators and starter motors. Powernet Worksheet Detail Section (Batteries, Path, Alternator) BATTERIES CHECK DMM (Digital Multimeter): Rec Value Accept Value. With a meter which reads frequency, I am able to accurately tell rpm. How to measure resistance with an analogue multimeter Analogue multimeters are good at measuring resistance, although they are a few points to note about the way in which it is done. An alternator is an electrical generator that converts mechanical energy to electrical energy in the form of alternating current. How to test your alternator. Open the hood and locate the battery in the front driver's side. Shop series alternator spindle mountsingle available for purchase today!. Find quality test meters online or in store. All the above can be done with a volt meter or test lamp. Couldn't get to the spot on the alternator, drats. A voltmeter is another device that can figure out the voltage of a circuit for you. Re: Testing tachometer. The primary side is the small connectors that attach to the wiring harness. The result can often lead to a flat, caused not by a faulty battery or through something obvious like the headlights being left on. The other critical tool to effectively diagnose an alternator is a scan tool. Several people have reported paying an extra $200-300. Then, with the engine running, gradually increase the electrical load by turning on the headlights and the blower fan. I don't have proper equipment to fully test this alternator. Followup from the Pelican Staff: You will have to test the alternator voltage and current under a load. Onboard Welder Using a GM Delco 140 Amp Alternator as soon as I throttled up a diode blew and the alternator started straining terribly almost killing the engine. Apparently there should be a bolt that came with the used alternator that is used to hook up the positive wire on the alternator. AC conductance test. Testing the Alternator. You could check with a multimeter on the 20 volt AC range. If the engine idle speed and pulley ratio combination does not allow the alternator to come to during start-up, the engine will have to increase the RPM to engage the one wire alternator. An alternator diode is being tested using a DMM (digital multimeter) set to the diode check position. Try to start the engine and listen carefully, if it produces a "whining" sound, it may be the alternator. How do I check the alternator with a volt meter - Answered by a verified Lexus Mechanic We use cookies to give you the best possible experience on our website. At 12volts that needs to be 1. In order to do this, you can take the exact same steps as before, but with the engine running. I called my usual mechanic and he said it could still test good and have an internal diode burned out. It seems to work well except my volt meter isn't responding. Quite a difference from the meter reading. Removed the 2 bolts holding the bottom bracket to the engine block. voltage should be 14. I was like, yup, kinda new that. This is the dc reading with the line above it. Of course I panicked and found the nearest parts store to check for a bad alternator, they said all good no problems. 7V drop) a 3V voltage in the "good" direction, your current will be limited by the internal resistance of the multimeter. These tests do not depend on a single reading but on a collection of relative readings. No multimeter needed. As pointed out by @tlhIngan, use a multimeter to test the alternator. POS and NEG batt pack. Today I found out how to test a car alternator. Connect the common test lead before you connect the live test lead. if your voltage readings are less then the alternator output is low. At 12volts that needs to be 1. The result can often lead to a flat, caused not by a faulty battery or through something obvious like the headlights being left on. The number displayed on the multimeter during the test will indicate the amount of voltage lost to resistance through a connection or a. ) Because diodes drop a specific voltage across their terminals with their threshold voltage is exceeded, we can use these properties to see if a diode is reading a. 5 volts is fine (lower temperature = higher voltage). Gather your materials - You will first need the following: Rubber hose (Approximately three feet), Safety glasses, Voltage meter or digital multimeter, Wheel Chocks. generators with a 30si alternator REPLACING A 27SI ALTERNATOR WITH A 21SI ALTERNATOR REPLACING DELCO REMY 10SI, 11SI, 12SI OR BOSCH K1 ALTERNATORS WITH 11SI ALTERNATOR. Then you would also need a spare battery, wire + terminals, a clamp meter, a DMM, and a load capable of pulling at least as much as your alternator is rated. Among other things, you would have to remove the alternator, take it apart, remove the existing regulator, and bring out a new control terminal before reinstalling the alternator and new regulator to test your handiwork. The way to test for this prob. Determine at a glance whether a weak battery is caused by a faulty alternator or a failing battery. If an alternator has paint or clear coat on the mounting surfaces, it may not be grounded and will not charge. With a Repco multimeter handy - it's quick and easy to check both. Depending on the year of your VW, the regulator can be found under the rear seat (left side) or be mounted right on top the generator. Check the state of the battery. X-DRAGON Dual USB Digital Power Meter Tester Multimeter Current and Voltage Monitor, Test Speed of Chargers, Cables, Capacity of Power Banks (7 Modes Monitor, dual USB ports, Accuracy) 34 price £ 49. Test the alternators regulator with a full field test when the alternator has low output. The setpoint is normally several volts higher than the battery voltage (12. How To: Test a vehicle alternator with a standard multimeter How To : 9 Tricks to Keep Your Car Functioning in Freezing Temperatures How To : Troubleshoot a heater blower motor. The other, older type is a manual ranging multimeter, where you need to select the correct range regards the projected value of the circuit you are going to test. 3 i just put a new alternator and battery in the truck Any time i put any kind of a load on the alternator the voltage meter drops down to as low as 9-10ish. If the alternator is not working right, the battery slowly drains down. 7 volts is optimal. A multimeter set to the Resistance mode (Ω) can be used as an additional diode test or, as mentioned previously, if a multimeter does not include the Diode Test mode. If there is a complete circuit, your multimeter will either beep, show a "0", or something other than a "1". if the car runs fine, its an Alternator problem as vince suggested. Check the voltage on the thick brown(s) at the alternator plug (remove the cap but leave the plug plugged in). The other critical tool to effectively diagnose an alternator is a scan tool. The fault may be elsewhere. Then start the truck up and make sure belts are tight and nothing is slipping. This is an article showing how a user how can test a voltage regulator to see if it is good or defective. It includes test lead holders for hands-free testing as well as easy to read instructions in English, French and Spanish. So, given the battery's health seems to be fine, after doing some reading I thought I would get a multimeter to check how many amps the battery is using when the car isn't running, as my assumption is there must be a drain from somewhere. If zero is not obtained on any earth test the stator is faulty. 04 volts less. If not, it doesn’t. Move the dial to the next range up until you get a valid reading. Until recently the easiest way to tell the systems apart is by looking at the plugs that connect the stator to the regulator. Step 2: Test the resistance. Alternator Function: The alternator produces electricity to charge the car battery while driving. This is the primary resistance and should be between. Your battery is near your engine and looks like a plastic box. wheelchair lift. If thats okay, next check the output at the rectifier. Im sure someone on here knows what pins show voltage. If you are a do-it-yourselfer, remember to always wear a pair of rubber gloves and goggles whenever you service your battery. I can put the Clamp meter into DC Amps and see some amps on the display. Getting familiar with a multimeter. How to Test Alternator with a Voltmeter Alternator test with a voltmeter. Alternator/generator/regulator Problems of Honda CR-V Honda CR-V owners have reported 22 problems related to alternator/generator/regulator (under the electrical system category). Measure the alternator amperes output using your multimeter as before. This test eliminates both the regulator and the harness, making it easier to isolate your investigation to the alternator. If your alternator stops working, you'll find out pretty quick, especially if you turn on your lights,. So, to sum it up, the armature is the stator and is outside, and the field coil is the rotor driven by the engine via the drive belt and it spins inside the stator-armature?. Ensure this is the case or borrow one from a friend that does. You can remove the discharged battery and replace it with a fully charged one or simply charge the vehicle's battery (on the vehicle or off) before test. -Point F to Ground test Passed - Voltage >= battery voltage-Point A to Pos terminal test Passed - Voltage gauge stops bouncing. With your meter hooked to the battery use a jumper wire from the battery positive post to the "F' (field) terminal at the alternator. Next, test the alternator and pay close attention to the condition of its diodes. If this is the case with your boat, adding an hour meter will ensure that you are able to maintain your boat's power-plant on schedule. A multimeter is an instrument used to check for AC or DC voltages, resistance and continuity of electrical components, and small amounts of current in circuits. The tests will help you to identify or eliminate the stator as the problem in a charging issue. should be a bit higher. CASE 1: Your test result indicates 13. A fully charged battery should show around 12. 5v, it regulates its charge by using a zenner diode and some transistors, when the voltage at the battery reaches 14. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. before you do anything, check all your connections [both battery terminals, the ground at the block and the starter, the positive at the starter, the positive at the alternator. However, on the commute home yesterday and I noticed the volt meter dropped to below 13. Start with a fully charged battery. There are some sure ways you can tell if your battery is bad by simply taking a good look. Hence the 'multi'-'meter' (multiple measurement) name. * * See Accessories to order a repair kit. 99v minimum. Step 2: Test the resistance. A volt meter (if you have one) may begin to give seeming erratic readings, these readings are the true output of the charging system. With the engine at 2000 RPMs, the meter should read between 14. Check your car's manual or parts manual to see what your alternator's maximum amperage should be. Richpin demonstrates how to test an alternator with a standard multimeter. How to check battery voltage, alternator voltage, and load test voltage with a multimeter CLA Belly Fat Burner Pills - MAX STRENGTH Stomach Weight Loss - Lose & Burn Fat Buy Now Fat Burner Hot Cream Weight Loss Belly Slimming Fitness Body Sweat Cream Hot Buy Now 25 Patches Retail box MYMI Korea Wonder Patch Burn Belly Fat Wing Lose Weight Buy. Easily one of the most common questions we receive here at Pro Street is from customers or users wanting to know how to use a multimeter to test their vehicle's components or sensors. Under normal conditions, the meter should show a (small) charge. If it is easy to locate the other test points, I would appreciate a description of where to put the V meter leads. Check the voltage with the motor off. How to Test the Alternator with a Multimeter (GM 3. * * See Accessories to order a repair kit. Trying to find a short in the system might sound like a job for a professional, but in this video you will learn how you can use an $8 test light to locate a shorts in your car's electrical system. Switching the voltmeter to AC voltage will test the alternator diodes for leakage which will destroy a battery over time, voltage should be 0 in this test. Refer to the datasheet to get the coil’s resistance. Take the negative lead of the multimeter and put it on the negative post of the battery. Plug the probes into the digital multimeter. It can be hard to determine if you’re dealing with a battery or an alternator problem. If you want to check larger current loads, such as alternator output, battery charger output, or inverter draws, you'll need to use a clamp-on ammeter attachment. Add up those numbers to find what amperage your alternator needs to feed the car’s electrical system. The other critical tool to effectively diagnose an alternator is a scan tool. To test your alternator, you'll need a voltage meter and amperage meter, or a multi-meter that reads both voltage and amperage. HOLD BUTTON Not all multimeters have this button. As you drive along the belt driven alternator takes over the role of delivering power to the car's electrical systems and also changes the battery. You can test for proper cranking voltage with a voltmeter while—you guessed it—cranking the engine. The alternator's job is to produce electricity and charge the battery. A diode is forward-biased when the positive (red) test lead is on the anode and the negative (black) test lead is on the cathode. I didnt check with a volt meter accross the battery. To measure the inductance of a device, intrinsic inductance of a circuit or more widespread distributed inductance, an LCR meter is the instrument of choice. Diagnosing Alternator Problems. Bosch introduces the latest, user-friendly, hi-tech Auto Electrical Test Bench that enables easy, fast and accurate testing of a wide range of alternators and starter motors. A multimeter set to the Resistance mode (Ω) can be used as an additional diode test or, as mentioned previously, if a multimeter does not include the Diode Test mode. A quick way to do a basic check on the alternator & battery, assuming you have a shop volt meter to hook to the battery terminals, is to check these measurements. This can be considered a check valve that, at 1 voltage input, will flow both ways. Basically, you just need a test light and small test meter. How to reset battery warning light Toyota Corolla and fix alternator problem. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. 548 volts instead of a low resistance. 5 VAC with the engine running. Take the red meter lead and touch one end of the diode. After you pull a fuse, check the multimeter to see if the reading changes. Photos and easy update instructions. The next test involves cranking the car, and being safety aware (no hanging jewelry or long hair) and measuring voltage at the battery terminals. before taking the bike apart, double check the connections and wires between here and the alternator!) 17) Set your multimeter to read AC voltage (VAC), in the lowest range that's equal to or greater than 100. When the aircraft. If your alternator stops working, you'll find out pretty quick, especially if you turn on your lights,. need help with theory. Only replace with the same model or the same specifications of the fuse. The problem could be with your alternator, or the voltage regulator. If the meter seems buried all the time then you'll need to do some math, to properly size the gauge. Bench testing an alternator on a test stand should verify whether or not its output is within specifications. IF the voltage is close to battery, the points are open. Today we're going to talk about an alternator ripple test. The alternator senses the voltage and regulates it at 14. 84 cavalier has 78 amp alternator. Self-Exciting Alternator makes no need for Alternator Wiring Diagram The Self-Exciting alternator is an alternator that has a special voltage regulator that doesn't need an ignition wire to activate it. If all of the above check out ok, then you are going to have to delve a bit deeper. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. I went to a salvage yard and got a used alternator. , the test is divided into three parts: PART 1 - Testing the alternator voltage output with the multimeter in VOLTS DC mode. Remove the test leads from the meter before you open the battery door. Or, if you are mechanically adept, try the following yourself: While the engine is running, use a multimeter to check the charge at the alternator output. An alternator will rapidly charge a somewhat flat battery from as little as 12/1500rpm depending on when the voltage regulator trips. Start with a fully charged battery. To check the output of the generator/alternator (that is, to make sure a charging current is going to the battery), start the engine and read the voltage across the battery terminals as before. Once connected to a terminal, an alternator should test between 12 and 13. If they are different, your stator is defective. I’ve had an inquiry about converting from a Lucas dynamo to a Delco 10-SI alternator. Zunnie/ThinkStock Since the alternator supplies your vehicle's electrical needs, when it begins to lose its potential, so do the car's accessories that draw on that electricity. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. If your alternator stops working, you'll find out pretty quick, especially if you turn on your lights,. To check the rotor for shorts and opens,. While engine is at idle, take a screwdriver or pocket knife and place on the back of the alternator bearing surface, (the round area in the middle of the back of alternator). If meter does not indicate continuity, replace stator. Rectifier testing and troubleshooting. Across the test connections I put an approx 1. Shop test meters in the electrical testers & tools section of Lowes. Components Needed. Only when the car engine is running can you check the efficiency of your alternator. A Digital Multi Meter is not fast enough to read the pulsed DC voltage and this is why you need to use the AC voltage setting. What are the symptoms of a bad alternator? What does your alternator do? How do you tell if your alternator is bad or your battery? Click to find out!. Place the positive lead of the meter on the positive lead of the battery. A multimeter’s Diode Test mode produces a small voltage between test leads. Safety Glasses. Finally busted out my shop manual on CD and looked up troubleshooting for the meter. With a fresh 1. Before performing any tests of your alternator, charge and test your battery. Photos and easy update instructions. Note the reading. But that doesn't rule out the alternator. Plug this tool into the cigarette lighter port to quickly test your vehicle’s charging system. Run the engine at about 1500 RPM. Test voltage across the battery terminals with the engine running. Although knowing how to test a car battery is an important skill, when dealing with a seemingly dead battery, the problem might simply be in the terminals. The best thing to do is either get a meter or take the alternator off and take it to an auto parts store and have it checked. If the voltage displayed is the same or less than battery voltage, replace the alternator. 5V it charges and in most cases it charges OK. If it fails this time, replace the alternator. That value is identified as the avalanche voltage. Any suggestions what to test -- starter switch, amp meter, alternator (or whatever it uses to charge the battery)?. If the alternator fails any test category, your customer needs a new alternator. If the battery is working properly and nothing is wrong with it, then it's the alternator that will more likely cause a problem. You should have AC-probably 18 or more volts to the AC terms, and DC battery voltage to the DC term. 1 volt AC on my meter. So, to sum it up, the armature is the stator and is outside, and the field coil is the rotor driven by the engine via the drive belt and it spins inside the stator-armature?. Your battery is near your engine and looks like a plastic box. Is disconnecting the battery while the car is running a legitimate method for testing the alternator? I changed the alternator in my car and put in a new one which I bought at autozone (a few people have told me this was a bad idea and that their alternators are crap. This is an article showing how a user how can test a voltage regulator to see if it is good or defective. Performing these tests to see if your Honda alternator is working is very easy to do, and only requires a few hand tools. You need a "floating ball" battery tester to check the specific gravity of your battery's fluid (assuming you do not have a sealed battery), and an inexpensive multimeter. But to actually see what’s happening at a given time, the scope is the only tool for the job. The procedure to remove the alternator is then demonstrated. To test a forward biased diode, place the positive probe onto the diode and the negative to ground. Putting test light between negative cable and negative post on battery makes test light come on; removing battery wire from alternator light goes out; am told this indicates bad diode trio in my GM 10SI two wire alternator. One can test an alternator while it's still in the car as long as the car runs. You need a "floating ball" battery tester to check the specific gravity of your battery's fluid (assuming you do not have a sealed battery), and an inexpensive multimeter. Will be in town probably tomorrow so will grab a digital multimeter. A google image search may reveal a photo of the engine. If you find code P0562, you very likely have a failing alternator (note that codes may vary by vehicle make/model/year). And then immediately it will return to the OL (Open Line). There are two sides to the coil. That gives you the loss in the cable between the alternator and battery on the POSITIVE side. This test can be performed by your dealer, auto mechanic or yourself. so you would need a 10amp load. just as soon as a turn off what ever is drawing the power it goes right back up to where its supposed to be at 14-15ish. Let's interpret your multimeter continuity test result: CASE 1: Your multimeter registered continuity in the circuit. It should measure volts in both DC and AC, and resistance in ohms. You can do this by checking the owner's manual of your device. After finding the battery, set up your test equipment. Check the voltage with the motor off. Install pulley driveshaft on mounting flange adapter. Understanding the Alternator • Four wires connect the alternator to the rest of the charging system. If the resistance, measured in ohms,. If you take the time to hook an ohm meter up and find which of the two yellow-brown wires really is the single wire, you can eliminate that one from the final hookup with the new Saturn setup. Digital multimeters can test diodes using one of two methods: Diode Test mode: almost always the best approach. Shop engine 805218 alternator 54 available for purchase today!. You should not read more 0. Did hookup the batteries individually to a charger and test, one was full, one was tiny bit low. My profile has an album with a picture of the circuit diagram. worn alternator can test ok on voltage, but will not keep battery charged, if you're using the power elsewhere. 1 Measuring Battery Base Voltage. Sometimes you will want to check that your solar system is performing properly, or you may simply want to know what output your panel is giving. Cranked car to check alternator with amp meter. Faulty alternator. Test the alternator with a voltmeter Alternator test with a voltmeter If it's in the range, it's good. The basic charging system health test: Use a multimeter to measure the resting and charging voltages as described above. You can test the field coil resistance of your dynamo quite easily if you feel competent and have access to a multimeter with a resistance range on it. A good diode will read _____ if the leads are connected one way across the diode and _____ if the leads are reversed. To check the functionality of the alternator, you need to switch on your car engine. Never disconnect a battery or break the battery connections when the car is running. This product is ideal for automotive home or shop use. Unlike most auto-. In order to do this, you can take the exact same steps as before, but with the engine running. Check the voltage meter to make sure there is not a reduction in voltage with the electrical systems turned on. Safety Glasses. Assembly c. 3 for that year came standard with a 105 amp alternator). Step 6 - Test the Pump. You can test the voltage a battery is outputting by using a multimeter. Start the engine, and touch the red and black test leads to the battery. 87V on mine). Set the multimeter to the largest amp setting. The stator windings can be checked with an ohm meter. The Cartman Car Battery and Alternator Tester is a fabulous little pick to check battery condition and alternator charging. If you find code P0562, you very likely have a failing alternator (note that codes may vary by vehicle make/model/year). The result can often lead to a flat, caused not by a faulty battery or through something obvious like the headlights being left on. The primary side is the small connectors that attach to the wiring harness. If meter does not indicate continuity, replace stator. Converting to a Delco 3 wire alternator. With an analog multimeter, red leads should always touch a positive terminal and black a negative terminal. The other, older type is a manual ranging multimeter, where you need to select the correct range regards the projected value of the circuit you are going to test. Other charging system problems include a loose drive belt, faulty wiring or blown fuse, defective ignition switch, etc. To test a car battery with a multimeter, set the multimeter to measure DC voltage, and set the dial to 20 volts; with the car off, disconnect the battery cables and attach the multimeter leads to the positive and negative posts on the battery. In case of digital multimeter, set the meter on “Diode Test” Mode (in case of analog multimeter, set the multimeter on Resistance or continuity mode) by turning the rotary switch of multimeter. A multimeter set to the Resistance mode (Ω) can be used as an additional diode test or, as mentioned previously, if a multimeter does not include the Diode Test mode. Ensure this is the case or borrow one from a friend that does. If the lights dim, the alternator works. But, if there is a drain of any significance, it will show up in the form of reduced battery voltage over time. Measure the alternator amperes output using your multimeter as before. This is the charging voltage of the system. Start the engine, and touch the red and black test leads to the battery. How to Check the Charging System in Vehicles Under The Hood: Charging System Component Check How to test voltage regulator on polaris sportsman. Check for "Dead" Battery Terminals. Diode Stator Test The Battery and Starting System Tests have been covered previously. Never mistake your Mustang for overheating again, it could just be your gauges. To check for a possible bad alternator diode, switch your voltmeter to a low setting on the AC (alternating current) voltage scale; With the engine running, touch the meter probes to the battery terminals; Your voltmeter should read 0 AC volts. A digital multimeter can be connected to the main battery terminals to measure voltage. If not, it doesn't. Start the engine, and touch the red and black test leads to the battery. Attach the clamps on your multimeter to the battery terminals. connect a lead from a voltmeter between the battery positive post and the B+ terminal of the alternator, you should have less than 0. 6), then test for amperage output (IIRC, the 4. Touch the one probe lead to the one of the AC inputs and the other lead to the remaining input. Place one probe from the multimeter on to one of the diodes legs, and the other probe on to the other leg. advantage of this type of test is that our confidence as to the ability of a diode to actually perform in an alternator is increased when we "stress it" by passing approximately 25 amps through it rather than one amp or less. You take a digital multimeter, check for voltage (should be between 13. 24 -Volt Alternator Installation & Operation Manual Introduction Thank you for choosing a Balmar high-output alternator. I didnt check with a volt meter accross the battery. Please read the entire procedure before starting. The Ammeter is another multimeter that would serve you well to read the manufacturer instructions. You should get a reading of between 13/14 volts. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. It can be tested just like the battery, but with the car idling instead of turned off. Here we also use a multimeter to check the voltage of your car battery. Even worst-case, with all. http://youtu. The stator windings can be checked with an ohm meter. Check that the other ones don't because if they do then you may have to try a different approach. Clamp Meters. An alternator produces direct current (DC) but can also produce alternative current (AC), which can damage the various electrical components of your vehicle, includin. If you find code P0562, you very likely have a failing alternator (note that codes may vary by vehicle make/model/year). You need to be able to measure large volume DC current to see if the alternator is producing current. 07V and loaded 14. To keep an eye on the utility’s systems, Gengler relies on a Fluke 189, a high-accuracy (0. The GM Delco-Remy cs130 alternator was used on GM vehicles from about 1986-1996. The multimeter can also do this, but it has many, many other functions. A multimeter can tell you if the battery is good, the alternator is charging, or if there is a break in a wire. Connect the meter leads to the battery terminals and look for 13.