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Battery drainange overnight. Check for Amerpage pull, and…

Customer Question
Battery drainange overnight....

Battery drainange overnight. Check for Amerpage pull, and removing the IOD fuse brings the pull to near 0. Can it be the fuse or the underlying systems?

Mechanic's Assistant: Most vehicles have two fuse panels. Have you located both?

This vehicle has one pane;

Mechanic's Assistant: What is the model/year of your Dodge?

2006 grand caravan SXT

Mechanic's Assistant: Are you fixing your Grand Caravan yourself? What have you tried so far?

Tested alternator at 14.5 volts, tested battery as 12.5 + pulled all fuses one at a time, pulling the IOD fuse reduces amp pull to almost 0, otherwise pull is 1.76 amps.

Submitted: 11 months ago.Category: Dodge
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Answered in 6 minutes by:
8/4/2017
Dodge Mechanic: Amedee, Dodge Technician replied 11 months ago
Amedee
Amedee, Dodge Technician
Category: Dodge
Satisfied Customers: 28,150
Experience: ASE certified tech advanced level specialist. Wisconsin certified emissions state inspector
Verified

Hello and welcome!

My name isCustomerand I can assist you with your question.

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Dodge Mechanic: Amedee, Dodge Technician replied 11 months ago

I am very sorry your having this issue with your vehicle.

I will try my best to answer all of your questions.

However, before we get started, please let me mention a few things.

1. If at any point you would like to speak on the phone, please feel free to request a phone call on your end and I can call you right away.

2. If you dont understand any technical terms or anything that I mention (component tests or theory or operation), please let me know and I will provide you with a more in debt explanation or answer.

3. Please understand that I am here to help you any way I can.

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Dodge Mechanic: Amedee, Dodge Technician replied 11 months ago

Excessive IOD can be caused by:

  • Electrical items left on.
  • Faulty or improperly adjusted switches.
  • Faulty or shorted electronic modules and components.
  • An internally shorted generator.
  • Intermittent shorts in the wiring.


If the IOD is over twenty-five milliamperes, the problem must be found and corrected before replacing a battery. In most cases, the battery can be charged and returned to service after the excessive IOD condition has been corrected.

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Dodge Mechanic: Amedee, Dodge Technician replied 11 months ago

To take this one step further, here is what you need to do to check what is drawing the battery down on this circuit.

Verify that all electrical accessories are off. Turn off all lamps, remove the ignition key, and close all doors. If the vehicle is equipped with an illuminated entry system or an electronically tuned radio, allow the electronic timer function of these systems to automatically shut off (time out). This may take up to twenty minutes.

Disconnect the battery negative cable.

Set an electronic digital multi-meter to its highest amperage scale. Connect the multi-meter between the disconnected battery negative cable terminal clamp and the battery negative terminal post. Make sure that the doors remain closed so that the illuminated entry system is not activated. The multi-meter amperage reading may remain high for up to three minutes, or may not give any reading at all while set in the highest amperage scale, depending upon the electrical equipment in the vehicle. The multi-meter leads must be securely clamped to the battery negative cable terminal clamp and the battery negative terminal post. If continuity between the battery negative terminal post and the negative cable terminal clamp is lost during any part of the IOD test, the electronic timer function will be activated and all of the tests will have to be repeated.

After about three minutes, the high-amperage IOD reading on the multi-meter should become very low or nonexistent, depending upon the electrical equipment in the vehicle. If the amperage reading remains high, remove and replace each fuse or circuit breaker in the Integrated Power Module, one at a time until the amperage reading becomes very low, or nonexistent. This will isolate each circuit and identify the circuit that is the source of the high-amperage IOD. If the amperage reading remains high after removing and replacing each fuse and circuit breaker, disconnect the wire harness from the generator. If the amperage reading now becomes very low or nonexistent, for the proper charging system diagnosis and testing procedures. After the high-amperage IOD has been corrected, switch the multi-meter to progressively lower amperage scales and, if necessary, repeat the fuse and circuit breaker remove-and-replace process to identify and correct all sources of excessive IOD. It is now safe to select the lowest milliampere scale of the multi-meter to check the low-amperage IOD.

Allow twenty minutes for the IOD to stabilize and observe the multi-meter reading. The low-amperage IOD should not exceed twenty-five milliamperes (0.025 ampere). If the current draw exceeds twenty-five milliamperes, isolate each circuit using the fuse and circuit breaker remove-and-replace (described earlier). The multi-meter reading will drop to within the acceptable limit when the source of the excessive current draw is disconnected. Repair this circuit as required; whether a wiring short, incorrect switch adjustment, or a component failure is at fault.

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Dodge Mechanic: Amedee, Dodge Technician replied 11 months ago

I am glad I can help!

Please don't forget to honor your good faith deposit by rating my answer as "5 STARS or SMILEY FACES" for assisting you today.

Keep in mind, we can still continue this conversation at no further cost to you even after you rate my answer. Just reply back to me using this page and I will get it and get back to you ASAP!

Also, if you are a member or if you have a subscription to the site, you still need to rate my answer in order for me to get credit for assisting you with your question.

You should see the rating system towards the top of the page.

Please let me know if you have any further questions.

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Dodge Mechanic: Amedee, Dodge Technician replied 11 months ago

Do you have any further questions sir?

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Dodge Mechanic: Amedee, Dodge Technician replied 11 months ago

Hello there!

I am just checking in to see how things are going and to see if you need any further assistance?

If so, please let me know as I will be happy to help.

Best Regards,

Customer/p>

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