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Parasitic drain on old Honda Civic 2004


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Kosta
New User

Nov 17, 2022, 9:34 AM

Post #1 of 4 (832 views)
Parasitic drain on old Honda Civic 2004 Sign In

I did a parasitic drain test and it pointed to the fuse for the ignition. Now i need to trace which part of the ignition line is draining the battery. Im guessing the faulty ignition system (where the key slot is). Hoping i can get opinion from experts.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Nov 17, 2022, 10:10 AM

Post #2 of 4 (827 views)
Re: Parasitic drain on old Honda Civic 2004 Sign In

My opinion is you can't have a parasitic drain from the ignition switch because it's not powered with the key off.

You DO have to remove the key when doing the draw test and let all the timers expire.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Kosta
New User

Nov 17, 2022, 10:42 AM

Post #3 of 4 (822 views)
Re: Parasitic drain on old Honda Civic 2004 Sign In

Thank you, appreciate the reply. I did have the key out when i did the test. Any idea what part of the ignition (the usual culprit) may be draining the battery?

100% its drain passing thru that fuse as I get no drain when the fuse for ignition is removed for a few days now.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Nov 17, 2022, 10:51 AM

Post #4 of 4 (816 views)
Re: Parasitic drain on old Honda Civic 2004 Sign In

Again, the ignition is "key on" only. Anything attached to it cannot be a drain.

There has to be something else on that circuit.

First, let's make sure you are testing it right. Here are the instructions. Once you confirm that you have tested it properly, give me the ID of the fuse where you think the problem is.

BATTERY DRAW PROCEDURE


There is a procedure for finding a battery draw like that.

You will need a digital ammeter and a jumper wire with clips on the ends to do this.
First rig any door switches so you can have a door open without triggering the interior lights and unplug the hood light. Remove one battery cable and attach the meter in series between the battery cable and battery post. Take the jumper wire and also attach it the same way. Leave the jumper wire on for at least 30 to 40 minutes to expire all the automatic timers. Now remove the jumper wire and read the meter. Anything over 50ma is too much draw. The way you locate this is to start removing fuses one at a time until the meter drops to normal level. This will be the circuit with something staying on. Determine what components are part of that circuit and check them individually until the problem is isolated.
Note that the act of pulling fuses will often restart some timers so you may have to wait for them to expire if that happens



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.







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