When you do the test on your Honda Civic, it will be an On Car Test, so don't remove the alternator from the car. Ford  |   CASE 2: Your multimeter registered a voltage that steadily dropped down to 9 Volts. Now the electrical demand is increased by turning on the headlamps. This voltage gives the illusion that the alternator is not functioning properly. Honda Civic Gen Tech and Builds / Show Offs. You can find this tutorial in Spanish here: Cómo Probar El Alternador (1996-2000 1.6L Honda Civic) (at: autotecnico-online.com). All Rights Reserved. ), as you're driving down the road. Re: Dropping Alternator Charge Voltage - ELD Enable/Disable. © 2011-2020 Abraham Torres-Arredondo wouldn't start. The automobile lineup is popular with many students, young-age families, and, of course, Honda autosports fans. This is good and it tells you that the alternator is working and is charging the battery and providing enough juice for the electrical needs of your Honda Civic. Now, turn on the radio, turn on anything and everything that can be turned on that uses electricity to run. A good signal is witnessed. ALTERNATOR TEST 1: Testing Battery Voltage With A Multimeter. This article will show you how to do a simple alternator test on your Honda Civic with a simple multimeter. Honda  |   I tried multiple times and it is consistently so. As you grow older, it’ll avoid you.”Joey Adams, Home  |   We have changed the alternator twice ... My 05 honda civic ex battery light came on, then went off, immediately followed by the check engine light. Tech Archive (No Posting) Engine Tech / Drivetrain Question on alternator charging voltage. For instance, a 100A alternator has a “rated” output of 100A, which means that it is capable of providing 100A when the alternator shaft is rotating at 6,000 RPM. May 1, 2011 #1 Left my lights on today @ work. 1.) Staff member. Works fine when engine is cooler. All Rights Reserved. Then the battery current sensor is scoped for a proper output signal. Your multimeter is gonna' register one of two possible readings and they are: Registered VIP. We'll do this by simply checking the battery's voltage with your Civic's engine running and your multimeter set to Volts DC mode. The car won't crank. Now, if the battery is completely dead on your Civic, you'll need to charge it up enough so that the car can idle for about 5 to 10 minutes (while you perform the test). Makes sense thinking about it that way. A steady 13.5 to 14.5 Volts DC. So, if the battery is completely dead, charge it up. This is a clear indication that your Honda Civic's alternator IS NOT charging the battery. So, when the alternator fails, you'll notice one or several of the following symptoms: The very first thing you'll do is to see what the battery's voltage is with your Civic's engine running (with a multimeter in Volts DC mode of course). Be careful, the engine will be running. This material may not be reproduced without the author’s consent. Jeep  |   Ford  |   That's right, you could stop testing here and say: ‘The alternator is fried’ and be done but.. With the multimeter test leads, probe the battery terminals. This system requires a different approach for testing. The charge light (also known as the battery light) will be shining nice and bright on your Civic's instrument cluster. Albin, these are the pids I look at when I'm dealing with a Honda. Now, if you're having to jump-start the car to get it going, this test result points to a bad battery or a parasitic drain. You can find this tutorial in Spanish here: Cómo Probar El Alternador (2001-2005 1.7L Honda Civic) (at: autotecnico-online.com). charging when engine running. This is a clear indication that your Honda Civic's alternator IS NOT charging the battery. Using the scan tool I can see current at the battery indicating whether it's charging, discharging, or neutral and I can see total amp draw through the ELD pid. Your purchase helps support my work in bringing you real diagnostic testing information to help you solve the problem! Its the eld system for the hondas makes our alt only Tools  |   No further testing is required, since this multimeter test result eliminates the alternator on your Honda Civic as bad. Disclaimer. The closest thing I found is that the main fuse coming from the alternator to the car's electrical system is 125A. I agree actual and desired charge volts are golden pids. CASE 2: Your multimeter registered a voltage that steadily dropped down to 9 Volts. Charge your battery and then go from there. 1.) If the alternator is outputting max voltage but the battery is sucking up the voltage for charging, the system voltage will drop lower than normal until the battery is fully charged. You can do this by turning on every accessory possible (inside the vehicle). Even way back then, I kept saying "You have to know your OPPONENT". How To Test The Alternator (1996-2000 1.6L Honda Civic), TEST 1: Battery Voltage Test With Engine Running, TEST 2: Checking The Continuity Of The Bat (+) Cable, Cómo Probar El Alternador (1996-2000 1.6L Honda Civic). I understand that battery voltage should be around 14v by alternator's If your Civic's alternator is working (and thus charging), your multimeter will show a voltage of 13.5 to 14.5 Volts DC. Vocational, Technical or Trade Scho. I suggest two more easy tests to be absolutely sure it is bad. When you turn the ignition key to the "Start" position, electrical power is supplied to the starter, and the engine turns over. 1.) Thus the system charges the battery only when needed. I agree Rudy but it my corner of the world I see these misdiagnosed often. It doesn't change the alternator control / output. The A/C will initially work and then the PCM commands it to de-activate (making you think you've got A/C compressor problems). Terms of Use My Honda CRV 2014 battery has just died last week. I understand that battery voltage should be around 14v by alternator's charging when engine running. ALTERNATOR TEST 1: Testing Battery Voltage With A Multimeter, ALTERNATOR TEST 2: Testing The Continuity Of The Bat (+) Circuit, ALTERNATOR TEST 3: Checking The Alternator Fuse. As you're keeping an eye on your multimeter's display screen, this is what you'll see: Turning on the headlights will produce charging voltage if the alternator is good. 1,096 Great Deals out of 65,188 listings starting at, 1,094 Great Deals out of 56,548 listings starting at, 1,280 Great Deals out of 62,978 listings starting at, 179 Great Deals out of 4,349 listings starting at, 1,228 Great Deals out of 79,256 listings starting at, 761 Great Deals out of 31,468 listings starting at, 1,048 Great Deals out of 45,827 listings starting at, 319 Great Deals out of 14,990 listings starting at, 563 Great Deals out of 26,028 listings starting at, 727 Great Deals out of 20,291 listings starting at, 593 Great Deals out of 29,724 listings starting at, 78 Great Deals out of 2,051 listings starting at, 637 Great Deals out of 33,406 listings starting at, 55 Great Deals out of 2,590 listings starting at, 102 Great Deals out of 3,474 listings starting at, 37 Great Deals out of 941 listings starting at, Can't tell if there's an alternator or battery issue.

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