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How to Do a Parasitic Draw Test on a Car TUTORIAL

How to Perform a Parasitic Draw Test

Maybe you installed a new bombardment or alternator and now your vehicle won't start. Peradventure your car bombardment dies overnight, after sitting for a few days, or keeps dying merely the alternator and bombardment is practiced. If your battery keeps dying when you try to start your vehicle and y'all know it's in practiced condition, chances are a parasitic draw is draining the battery from a low-cal or a module that may be stuck on. This mail explains how to perform a parasitic depict test with a tester tool and a multimeter to notice out what's draining the battery and how to fix information technology.

Perform a parasitic draw test and fix the cause yourself with quality auto parts and tools at 1aauto.com

How to Perform a Parasitic Describe Test in ix Steps

Steps for Performing a Parasitic Depict Examination

  1. Accuse the Battery

    Charge the bombardment with a battery charger or make sure the battery is charged before outset

  2. Find a Battery Close Off Tool or Parasitic Describe Tester Tool

    You will need a battery shut off tool or a parasitic draw tester. This tool basically fits betwixt the battery and the negative battery cable. It requires you to road test the vehicle with all the electronics on, such as the radio, heating and air workout, cruise control, and connect a multimeter to either end of the tool to become a reading without disrupting the modules.

  3. Remove the Fuse Panel Covers

    Remove the fuse console covers to access them easily.

  4. Close the Door Latches or Dome Lite Switches

    If the vehicle has dome lights continued to the latch, close the latches. If y'all have a dome calorie-free switch, push these down as well.

  5. Connect the Multimeter to the Shut off Tool

    Connect the multimeter to the tool. Each multimeter is unlike, but connect the positive pb to the x amp max fuse setting. Fix the dial to milliamps. Hook a lead to each side of the tool (doesn't affair which side).

  6. Let the Modules Power Down

    Y'all want the modules to ability down earlier opening the switch on the tool or else information technology will put a depict on the battery, which is normal. On older vehicles information technology takes about 10 minutes for the modules to power downward. On newer vehicles it could take up to an hour for the vehicles to power downwardly.

  7. Open up the Switch and Have a Reading

    Open the switch on the parasitic depict tester tool. Read the reading of milliamps on the screen. Await up to 10 minutes to an hr to see if the reading falls below thirty milliamps.

    If lights are on the reading can be much higher.

    Don't open up whatever doors or unlatch whatever latched door latches while the multimeter is taking a reading or it could blow a fuse in the meter.

  8. Remove One Fuse at a Fourth dimension

    To detect out where the draw is originating, remove i fuse at a fourth dimension and check the meter. If the reading falls, that fuse'south circuit is probably causing the parasitic describe.

    When reinserting the fuse, depending on what circuit it is in, it may plough on a module on and y'all may have to wait a minute or two if the reading spikes. If information technology significantly spikes or drops, you'll probably have to wait another ten minutes for the module power down before pulling the next fuse.

    We recommend pulling i fuse per circuit to relieve hassle when reinstalling the fuses.

  9. Bank check Any Fuse's Circuits with Low Readings

    If the reading drops below the fuse's amps, check that circuit by reconnecting the fuse to the circuit and disconnecting the suspected office from the circuit. If the parasitic cartoon stops, that part is the crusade.

Related Content

  • The Battery or Alternator?
  • Why Practice Auto Batteries Die in Cold Weather?
  • How to Exam a Fuse with a Multimeter

Shop Parts and Tools at 1aauto.com

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  • Diagnostic & Measuring Tools

Summary

Car Battery Keeps Dying? How to Perform a Parasitic Draw Test

Article Name

Car Battery Keeps Dying? How to Perform a Parasitic Depict Test

Description

A car battery with parasitic describe will keep dying overnight, every few days, or whenever you offset when you know it's in skillful status. This post explains how to perform a parasitic draw test and fix the crusade of a parasitic draw.

Author

1A Auto Team

Publisher Name

1A Car

Publisher Logo

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How to Do a Parasitic Draw Test on a Car TUTORIAL

Posted by: fanniehavenalwas.blogspot.com

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