2003 Dodge Ram heater-fan problem

Tiny
PEROLAV@MARIDAL.COM
  • MEMBER
  • 2003 DODGE RAM
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 74,000 MILES
Hi
My heater fan, on my RAM 3500, does not work on any level. I have checked the fan motor, fuses, electrical switch panel and measured the electricity supply to the switch. The problem seems to be that there is no electrical supply to the switchboard. How do I go forward to check the circuits from there? Are there any essential units I need to check? I`m not sure what fuse it is, (I`m not familiar with the terms).
Looking forward for an early reply :)

Per Olav Maridal, Norway


http://www.2carpros.com/forum/automotive_pictures/583399_37_1295130181_1.jpg

Do you
have the same problem?
Yes
No
Friday, October 15th, 2010 AT 5:30 PM

3 Replies

Tiny
JDL
  • EXPERT
The dark green wire at the blower motor is hot all the time, with the key on. On and off, different speeds are controlled on the ground circuit. I have heard of the ignition switch connector trying to melt, because that circuit is hot all the time with key on. Something to check.


http://www.2carpros.com/forum/automotive_pictures/170934_dodge_ram_blower_motor_2.jpg

Was this
answer
helpful?
Yes
No
Friday, October 15th, 2010 AT 5:52 PM
Tiny
PEROLAV@MARIDAL.COM
  • MEMBER
Thanks for Your early reply :) I have some additional questions.
Which fuse is connected, could it be "#36 vistronic fan"? Maybe a relay?
Where on the car is the dark green cable to the fan, connected with electric supply? Is it a main board somwhere or is it by the ignition key?
Was this
answer
helpful?
Yes
No
Saturday, October 16th, 2010 AT 5:03 AM
Tiny
JDL
  • EXPERT
Check fuse # 4-- 40 amp at the integrated power module, under the hood.
Was this
answer
helpful?
Yes
No
Saturday, October 16th, 2010 AT 9:42 AM

Please login or register to post a reply.

Recommended Guides