RE: Battery draining out overnight

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RE: Battery draining out overnight

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RE: Battery draining out overnight - 12/12/2007 7:20:38 AM

emberglo

Posts: 6
Joined: 10/8/2007
Status: offline

If say your battery was 60 ampere hours then if the drain was .19amps then the battery should go completely flat in about 317 hours if my maths is right but of course after about 250 hours or maybe 10 days your car wouldnt start. So a drain of .19 amps is too much as I can leave my car a lot longer than 10 days, however it is not enough to flatten a battery overnight.

(in reply to berg07)

Post #: 11

RE: Battery draining out overnight - 12/12/2007 3:13:59 PM

berg07

Posts: 13
Joined: 12/8/2007
Status: offline

quote:

ORIGINAL: emberglo

If say your battery was 60 ampere hours then if the drain was .19amps then the battery should go completely flat in about 317 hours if my maths is right but of course after about 250 hours or maybe 10 days your car wouldnt start. So a drain of .19 amps is too much as I can leave my car a lot longer than 10 days, however it is not enough to flatten a battery overnight.

I should have pointed out that the times the battery drained out overnight it hasn't been fully loaded. Usually I've had enough power to turn the interior lights on, but not enough to crank the starter. The average temperature here in Finland right now is about 0 degrees Celsius.

I simply haven't had any time to fully load the battery up to 12,6V recently.
But anyhow, as far as I know a 0,19A drain is not acceptable.
What would be a acceptable drain?

_____________________________

Toyota Camry 2.0 GLI -91 sedan. 230 000 km.
I hail from Finland.

(in reply to emberglo)

Post #: 12

RE: Battery draining out overnight - 12/12/2007 3:29:34 PM

CAM RAY 97

Posts: 8
Joined: 11/17/2007
Status: offline

Just checked my current drain. On the 10a scale my drain is .01a . On the 2000ma scale it's 0.013ma. 97 Camry LE, 2.2l engine, factory radio, everything shut off.

(in reply to berg07)

Post #: 13

RE: Battery draining out overnight - 12/12/2007 3:51:11 PM

CAM RAY 97

Posts: 8
Joined: 11/17/2007
Status: offline

Something else I would disconnect is the Engine ECU. Page 17 EWD. They have memory and do draw some ma.

(in reply to CAM RAY 97)

Post #: 14

RE: Battery draining out overnight - 12/13/2007 7:57:19 AM

berg07

Posts: 13
Joined: 12/8/2007
Status: offline

quote:

ORIGINAL: CAM RAY 97

Just checked my current drain. On the 10a scale my drain is .01a . On the 2000ma scale it's 0.013ma. 97 Camry LE, 2.2l engine, factory radio, everything shut off.

That's the kind of drain I wish I had...My father's '89 Camry also drains 0,01A. I guess those kind of numbers would have to be considered as normal.

_____________________________

Toyota Camry 2.0 GLI -91 sedan. 230 000 km.
I hail from Finland.

(in reply to CAM RAY 97)

Post #: 15

RE: Battery draining out overnight - 12/13/2007 8:07:00 AM

berg07

Posts: 13
Joined: 12/8/2007
Status: offline

quote:

ORIGINAL: CAM RAY 97

Something else I would disconnect is the Engine ECU. Page 17 EWD. They have memory and do draw some ma.

I will try to disconnect it, I see that it's located in a tricky place.

_____________________________

Toyota Camry 2.0 GLI -91 sedan. 230 000 km.
I hail from Finland.

(in reply to CAM RAY 97)

Post #: 16

RE: Battery draining out overnight - 12/13/2007 8:31:50 AM

berg07

Posts: 13
Joined: 12/8/2007
Status: offline

quote:

Besides powering the 20a Dome circuit, the 40a FL also powers the 15a Hazzard/Horn circuit, the 15a EFI circuit. See pg 44 EWD.

I think I would unplug the radio from the car and check current drain. Unplug clock and also headlight switch, check drain. After that I don't know.
I have also been looking in the Body Electrical Manual, though similar to EWD.

In other words, the 20A dome fuse and the 40A FL main fuse are in the same circuit.
Therefore the drop in drain I get when I remove either one of these two fuses is quite the same?
I don't remember if I tried to remove them both at the same time. I will try to do that.

quote:

Something that puzzles me is....when looking at the fuse or power source pages 40 & 41 EWD the Radio and Clock are listed under more than one fuse. See Dome, Tail, Radio, and Cig. ???

I don't quite understand that either.
Can anyone explain why the same component/part is listed under several different fuses?

_____________________________

Toyota Camry 2.0 GLI -91 sedan. 230 000 km.
I hail from Finland.

(in reply to CAM RAY 97)

Post #: 17

RE: Battery draining out overnight - 8/25/2008 3:08:02 AM

berg07

Posts: 13
Joined: 12/8/2007
Status: offline

Sorry for not visiting the forum for a long time. Been busy.

I didn''t get any further in my trouble-shooting so I decided to leave the car to a professional a month ago. The company specialized in car electrics.

I left the car on a monday morning and got it back on friday afternoon. Five workdays it took them! Or actually they didn''t work for five days straight to get it fixed..but the repairer told me he had a hard time finding the problem.

During my fooling around I found out that the drain was 0,19 A.
This turned out to be correct since the repair man came to the same conclusion.

Part of the solution was in the electric door lock. Some kind of electric box (door control relay I think?) malfunctioned. It was located "behind" the glove box.

The electric door lock has never worked as long as I''ve owned the car.

Removing the box took the drain down to 0,13 A, which I still think is too much.

What do you think?

_____________________________

Toyota Camry 2.0 GLI -91 sedan. 230 000 km.
I hail from Finland.

(in reply to berg07)

Post #: 18

RE: Battery draining out overnight - 8/27/2008 10:15:46 PM

toyomoho

Posts: 848
Joined: 1/24/2008
Status: offline

Don''t know. The 1995 Camry I tested draws about 12ma with all systems off. What works with the ign key off, doors closed, etc. Clock timer chip (LED''s are off with ign key) and radio memory, this is not much current draw.

Does this car have an after market alarm system, remote lock, etc?

(in reply to berg07)

Post #: 19

RE: Battery draining out overnight - 8/28/2008 1:59:01 AM

berg07

Posts: 13
Joined: 12/8/2007
Status: offline

No. No alarm, no remote lock.

The only thing close to an after market alarm system is a small light in the rear window (non-original I guess) break light. It''s blinking all the time. I removed the light bulb while measuring the drain which had no effect on the drain.

I think I''ll call the repair shop who did the work on finding the drain and ask them if they think that 0,13 A is an acceptable drain. My opinion is that I told them what the problem was but they only fixed partially (took the drain from 0,19A to 0,13A). I think I can demand more from a specialist?

(in reply to toyomoho)

Post #: 20