How to Perform a Parasitic Depict Examination

Maybe you installed a new battery or alternator and now your vehicle won't start. Perchance your car battery dies overnight, after sitting for a few days, or keeps dying but the alternator and bombardment is good. If your battery keeps dying when you lot try to get-go your vehicle and you know information technology's in proficient condition, chances are a parasitic draw is draining the bombardment from a light or a module that may be stuck on. This post explains how to perform a parasitic depict test with a tester tool and a multimeter to find out what's draining the battery and how to prepare it.

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

How to Perform a Parasitic Depict Test in 9 Steps

Steps for Performing a Parasitic Describe Test

  1. Charge the Battery

    Accuse the battery with a battery charger or make sure the battery is charged before kickoff

  2. Observe a Battery Shut Off Tool or Parasitic Describe Tester Tool

    You lot will demand a bombardment shut off tool or a parasitic draw tester. This tool basically fits between the battery and the negative battery cable. It requires you to road test the vehicle with all the electronics on, such every bit the radio, heating and ac, cruise control, and connect a multimeter to either terminate of the tool to get a reading without disrupting the modules.

  3. Remove the Fuse Panel Covers

    Remove the fuse panel covers to access them hands.

  4. Shut the Door Latches or Dome Low-cal Switches

    If the vehicle has dome lights connected to the latch, shut the latches. If you accept a dome light switch, push these down as well.

  5. Connect the Multimeter to the Close off Tool

    Connect the multimeter to the tool. Each multimeter is different, only connect the positive lead to the x amp max fuse setting. Set the dial to milliamps. Hook a lead to each side of the tool (doesn't matter which side).

  6. Permit the Modules Power Downward

    You desire the modules to ability down before opening the switch on the tool or else it will put a draw on the battery, which is normal. On older vehicles it takes about x minutes for the modules to power downwards. On newer vehicles information technology could have upward to an hr for the vehicles to power downward.

  7. Open the Switch and Take a Reading

    Open the switch on the parasitic draw tester tool. Read the reading of milliamps on the screen. Expect upward to 10 minutes to an hour to run into if the reading falls below xxx milliamps.

    If lights are on the reading can be much higher.

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

  8. Remove Ane Fuse at a Time

    To observe out where the describe is originating, remove one fuse at a fourth dimension and bank check the meter. If the reading falls, that fuse'southward excursion is probably causing the parasitic draw.

    When reinserting the fuse, depending on what circuit it is in, information technology may plow on a module on and you may have to await a minute or two if the reading spikes. If it significantly spikes or drops, you lot'll probably take to wait another x minutes for the module power downward before pulling the next fuse.

    We recommend pulling one fuse per circuit to save hassle when reinstalling the fuses.

  9. Check Any Fuse's Circuits with Low Readings

    If the reading drops below the fuse's amps, cheque that circuit by reconnecting the fuse to the circuit and disconnecting the suspected function from the excursion. If the parasitic drawing stops, that part is the cause.

Related Content

  • The Bombardment or Alternator?
  • Why Practice Motorcar Batteries Die in Common cold Weather?
  • How to Test a Fuse with a Multimeter

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Summary

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

Article Proper noun

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

Description

A car battery with parasitic depict will keep dying overnight, every few days, or whenever y'all get-go when you know information technology's in good condition. This postal service explains how to perform a parasitic describe exam and ready the cause of a parasitic draw.

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1A Machine Team

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1A Auto

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