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Discussion Starter · #1 · (Edited)
Is the battery drain of 0.16A excessive?
LX model 2002
Update: pulling out Clock Back-up Fuse (front pass side fuse box - #13, 7.5A) "fixed" the problem and draw dropped to 0.01A.
What could be faulty in the digital clock?
 

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Discussion Starter · #3 ·
And it's called clock back up fuse?
I edited original post, but will add:
"Update: pulling out Clock Back-up Fuse (front pass side fuse box - #13, 7.5A) "fixed" the problem and draw dropped to 0.01A. What could be faulty in the digital clock?"
now, since you gave me a short list of "what to check", I need to thick either to live without those components, or to check them one by one.....
I hate electrical issues....
 

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Discussion Starter · #6 ·
Buffalo4,
You said "if", not "when". "When" would sound much, much promising and encouraging.
Last night I pulled all (almost all) relays in engine bay - the drain (0.16A) didn't change. Then I pulled the fuse that powers something I can live without.
So, I will tackle easy things (in my opinion easy) one by one, from less important to more important.
PCM - that's the onboard computer (aka ECU). currently I have used one installed (with my vin number programmed).
If PCM is suspected to be faulty or just for kicks, I can put back the original one and see if the drain issue is the same.
Multiplex control units - what are they for? Airbags sensors, seat belt sensors, door locks, window regulators???
The reason I'm asking these "dumb" questions is that regular repair manuals (like haynes or chilton) don't give any "in-depth" information. I even searched for the fuse box(s) diagram and they don't have any info about it. Hegelian dialect in all its beauty.
I read some post about sliding door buzzer malfunction...
All items on your "Buffalo's list" functioned normally.

Off topic -
There are two things/areas that bother me:
1 - upstream O2 sensor's heating element wires go from the sensor to Junction J27 (if I remember correctly) with 21 contacts. This junction point is near PCM (probably left to it).
According to wiring diagram, the wires must be, let's say< yello/green, green/yellow (again, I don't remember by heart). There are NO wires with these colors that come to this Junction point. This condition throws an error code and lights up CEL. I didn't check which wires (in Junction point) go to O2 sensor, yet.
2 - There's another plug (junction point?) in engine bay, that hangs there idle and doesn't connect to anything at all, it's already corroded. (link - Mystery connector in engine bay )
 

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Discussion Starter · #7 · (Edited)
Davesdriveody,
What is the "rest" time for the computer to go to sleep mode?
I measured battery drain after the car was parked for 10 or more minutes. no accessories, no dome lights, no key in ignition. Only one sliding door was open and sliding door switch on dashboard was in "off" position (to prevent accidental activation of sliding doors).
What is IIRC?
 

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Discussion Starter · #10 ·
Update:
after closing all doors and waiting over 15 minutes, the battery drain measured at 0.03A.
I will experiment with multimeter attached to the battery and manually opening the door, toggling sliding door switch on dashboard on and off. Let's see....
 

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Discussion Starter · #11 ·
Update:
1 - all doors closed - battery draw is 0.03A
2 - one sliding door open - battery draw is 0.15A
3 - door closed - battery draw is 0.03A
4 - opposite sliding door open - battery draw is 0.15A
5 - all closed - battery draw is 0.03A
6 - fuse #13 (pass side) is out - battery draw is 0.00?A.
7 - open sliding door (fuse #13 is in) - battery draw is 0.15A
8 - unlock car with remote (fuse #13 is in)- battery draw is 5.xxA
9 - all doors closed (fuse #13 is in)- battery draw is 0.3A
10 - front pass door open(fuse #13 is in) - battery draw is 0.11A
11 - all doors closed again (fuse #13 is in)- battery draw is 0.03A

conclusion - when door related switches are "triggered", there's a current draw.
My observations and fears that battery draw is excessive (0.16A) was incorrect, because door was open.

Am I correct?
 

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Discussion Starter · #16 ·
Nitely2,
my battery drains in about a week or so, not overnight. It's also old and weak (has less amps that new). If I drive every day, it starts ok.
I will review your post about parasitic drain...
 
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