2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

room fuse battery drain

Thread Tools
 
Search this Thread
 
Old Aug 8, 2013 | 07:57 PM
  #1  
deftones1868's Avatar
Thread Starter
Full Member
Tenured Member: 10 Years
iTrader: (19)
 
Joined: Jul 2012
Posts: 225
Likes: 0
From: painesville oh
room fuse battery drain

so... I've done some reading, and have not seen any solutions nor have I been able to figure anything out. my battery is draining, on the mutimeter I'm getting .39-.4 pull the fuse and it goes to .03ish... so I started unplugging everything related to that fuse.... radio, CPU, Security, lights, door locks, all one at a time, with no change every time. any suggestions on what to try now?
Reply
Old Aug 8, 2013 | 08:13 PM
  #2  
satch's Avatar
Moderator
Tenured Member: 20 Years
iTrader: (1)
 
Joined: Jun 2005
Posts: 11,738
Likes: 16
From: tulsa,ok.
S4 or S5?
Reply
Old Aug 8, 2013 | 08:14 PM
  #3  
deftones1868's Avatar
Thread Starter
Full Member
Tenured Member: 10 Years
iTrader: (19)
 
Joined: Jul 2012
Posts: 225
Likes: 0
From: painesville oh
sorry! it's a s4 vert
Reply
Old Aug 8, 2013 | 08:16 PM
  #4  
satch's Avatar
Moderator
Tenured Member: 20 Years
iTrader: (1)
 
Joined: Jun 2005
Posts: 11,738
Likes: 16
From: tulsa,ok.
ROOM: Clock, stereo, interior lights, alarm, ECU (pin 3J).

The Room fuse powers a lot of courtesy lights so that would require unplugging a series of plugs rather than just one.

Last edited by satch; Aug 8, 2013 at 08:23 PM.
Reply
Old Aug 8, 2013 | 08:23 PM
  #5  
deftones1868's Avatar
Thread Starter
Full Member
Tenured Member: 10 Years
iTrader: (19)
 
Joined: Jul 2012
Posts: 225
Likes: 0
From: painesville oh
I've pulled all those one by one, (clock is always disconnected cuz i have gauge pod there) but it did nothing, but if I pull the fuse and it drops. I've pretty much disconnected everything one by one inside the car, including stuff outside this fuse, mirror switch, heater controls blower motor, turn/wiper/cruise/hazard switches...

I pulled the dash harness plugs (2 on drivers side), trunk, door harness's... almost every plug I can get to I've pulled and checked with no changes.

Last edited by deftones1868; Aug 8, 2013 at 08:34 PM.
Reply
Old Aug 8, 2013 | 08:34 PM
  #6  
satch's Avatar
Moderator
Tenured Member: 20 Years
iTrader: (1)
 
Joined: Jun 2005
Posts: 11,738
Likes: 16
From: tulsa,ok.
So you unplugged the wire which feeds the door courtesy lights? And the L/R wire which feeds RR3-01, which I believe feeds the trunk light? The Ignition Key Reminder Switch, and ignition key and door cylinder light if equipped.

Also, did you wait for all the circuits which are powered by the Room fuse to power down before measuring for amperage drain as it takes a while for this to occur.

And what provoked you to check for a battery drain in the first place?

Last edited by satch; Aug 8, 2013 at 08:39 PM.
Reply
Old Aug 8, 2013 | 08:55 PM
  #7  
deftones1868's Avatar
Thread Starter
Full Member
Tenured Member: 10 Years
iTrader: (19)
 
Joined: Jul 2012
Posts: 225
Likes: 0
From: painesville oh
my battery went from 12.6 to 10.2 in 3 hours. that's what started it, the cars been a project for awhile now and it's finally close to being together, so I'm kinda going through everything to make sure everything is properly working.

I unplugged the 2 connectors that go to the doors. I unplugged the connector to the to the trunk light

is the ign key reminder part of the CPU?
ign key light I did not. ill try that one tomorrow.

and how long should I wait, I'd wait like a min or 2 and check to see if any changes....?

I appreciate the help.
Reply
Old Aug 8, 2013 | 09:02 PM
  #8  
satch's Avatar
Moderator
Tenured Member: 20 Years
iTrader: (1)
 
Joined: Jun 2005
Posts: 11,738
Likes: 16
From: tulsa,ok.
Some circuits require about twenty minutes if not longer to fully power down.

The ignition key reminder has two wires running to it, one from the Room fuse and the other side from the CPU.

The alternator is also a culprit for draining the battery. If you recharged the battery and disconnected the voltage output wire from the alternator that should prevent it from draining the battery if were indeed doing such. And what type of alternator are you using? S4 or another type?

Last edited by satch; Aug 8, 2013 at 09:04 PM.
Reply
Old Aug 8, 2013 | 09:07 PM
  #9  
deftones1868's Avatar
Thread Starter
Full Member
Tenured Member: 10 Years
iTrader: (19)
 
Joined: Jul 2012
Posts: 225
Likes: 0
From: painesville oh
s6.
constant from battery.

me not waiting long enough may be a problem too. tomorrow ill start going through more slowly checking what I've already checked.
Reply
Old Aug 8, 2013 | 11:47 PM
  #10  
misterstyx69's Avatar
Retired Moderator, RIP
Tenured Member: 20 Years
iTrader: (142)
 
Joined: Sep 2005
Posts: 25,581
Likes: 136
From: Smiths Falls.(near Ottawa!.Mapquest IT!)
Glove box light?
OH!..Vert?..trunk light?????
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
The1Sun
1st Generation Specific (1979-1985)
7
Sep 18, 2015 07:13 PM
The1Sun
New Member RX-7 Technical
5
Sep 15, 2015 04:45 PM
The1Sun
1st Generation Specific (1979-1985)
0
Sep 7, 2015 10:21 PM




All times are GMT -5. The time now is 10:34 AM.