• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

Fuse 39 GEM 5Amp

  • Thread starter Thread starter 99YellowGT
  • Start date Start date Oct 17, 2004
9

99YellowGT

New Member
Jul 19, 2002
12
0
0
KY
Oct 17, 2004
#1
  • Oct 17, 2004
  • #1
While the car is off I am having a battery drain of about 235ma. When I pull fuse #39 GEM, the current draw drops to 0. I have a bad door ajar switch on the driver door, so I pulled the fuse for the dome light out. If the GEM module somewhat controls the dome light why would it be pulling power while the car is off.

I've been away for awhile but it feels great to be back!
 
9

99YellowGT

New Member
Jul 19, 2002
12
0
0
KY
Dec 7, 2004
#2
  • Dec 7, 2004
  • #2
TTT
 
9

99YellowGT

New Member
Jul 19, 2002
12
0
0
KY
Dec 26, 2004
#3
  • Dec 26, 2004
  • #3
We'll I got the door ajar switch working again, thanks to some WD40. Still have the bad current draw (GEM Fuse) with the car just sitting. Some people I know are having the same problem with their F150 trucks. Is this a FORD thing or what? Bad GEM module? So annoying!
 
P

ParabuthusKing

New Member
Oct 13, 2008
1
0
0
Oct 13, 2008
#4
  • Oct 13, 2008
  • #4
99YellowGT said:
While the car is off I am having a battery drain of about 235ma. When I pull fuse #39 GEM, the current draw drops to 0.
Click to expand...


This is my first time on this forum, but I am curious as to what to do, as I seem to have this similar problem with my girlfriends 2003 ford mustang that I am trying to fix for her.. ( I hate mechanics) so any help is greatly appreciated and the sooner the better as I would like to fix this soon. Thanks in advance for all your help P.S. Iam not really a gearhead, but my father is, so please don't think I am an idiot
 
E

Elvir93

New Member
Nov 3, 2019
3
0
1
Virginia
Nov 3, 2019
#5
  • Nov 3, 2019
  • #5
Yeah I’m having the same problem with fuse 39, and I’m not sure how to go about it.
 

wmburns

SN Certified Technician
Aug 14, 2009
5,892
514
204
Houston Texas
Nov 3, 2019
#6
  • Nov 3, 2019
  • #6
99YellowGT said:
I have a bad door ajar switch on the driver door
Click to expand...
The GEM monitors the driver's door in order to turn on the interior lights. Soooooooooo with a bad door ajar switch the GEM is not going to sleep like it should and hence the constant power draw.
 
E

Elvir93

New Member
Nov 3, 2019
3
0
1
Virginia
Nov 4, 2019
#7
  • Nov 4, 2019
  • #7
That's interesting, how did you realize that you have a bad door ajar? Was it the light fuse test?
 
You must log in or register to reply here.

Similar threads

D
Possible Parasitic Draw... Follow My Journey
  • daveinfl33777
  • Jan 11, 2025
  • SN95 V6 Mustang Tech
  • 2 3
Replies
48
Views
2K
SN95 V6 Mustang Tech Apr 4, 2025
dennisc
D
2
SJB Parasitic Draw, Fuse 59&67
  • 2005 Mustang V6
  • Apr 30, 2026
  • 2005 - 2014 S-197 Mustang -General/Talk-
Replies
0
Views
63
2005 - 2014 S-197 Mustang -General/Talk- Apr 30, 2026
2005 Mustang V6
2
J
1990 fox starts on starting fluid only
  • Jfox
  • May 14, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
9
Views
139
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 15, 2026
AeroCoupe
A
Resolved 03 GT Parasitic Draw Fuse 26 (PCM)
  • Antrix
  • Mar 22, 2025
  • SN95 4.6L Mustang Tech
Replies
2
Views
659
SN95 4.6L Mustang Tech Mar 24, 2025
89ripper
89 LX Electrical Troubles
  • fun331
  • Oct 25, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
5
Views
322
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Nov 27, 2025
fun331
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?