Im having a problem with my 2005 Subaru Legacy GT, The cooling fan stays on all the time, even when I first start the car. This morning was in the low 50's and the fan kicked in straight away. I was reading online that this problem may be caused by the ECU. About a year and a half ago I had the ECM replaced. SO Im wondering if ECU and ECM are the same thing. Id like to get this covered by warranty. My car has 62k. Miles. Thanks for the help.
2006-10-10 06:47:57 · 3 answers · asked by efewebish 1 in Cars & Transportation ➔ Maintenance & Repairs
they are one in the same. It sounds like you may have a fan relay switch stuck...check this first...it should be in a box located under the hood on the drives side...it will be marked relays and/or fuses.
Hope this helps.
2006-10-10 06:51:30 · answer #1 · answered by Kenneth S 5 · 1⤊ 0⤋
This Site Might Help You.
RE:
What is the difference between an ECM and ECU?
Im having a problem with my 2005 Subaru Legacy GT, The cooling fan stays on all the time, even when I first start the car. This morning was in the low 50's and the fan kicked in straight away. I was reading online that this problem may be caused by the ECU. About a year and a half ago I had the...
2015-08-18 18:55:59 · answer #2 · answered by Shae 1 · 0⤊ 0⤋
ECM = Electronic Control Module
ECU = Electronic Control Unit
PCM = Powertrain Control Module
All three refer to the same component.
If you have the A/C on, or if you have the heater unit selected to the DEF position, the fan(s) will remain on all the time. The A/C system requires air to move across the evaporator all the time.
Good Luck
2006-10-10 06:54:22 · answer #3 · answered by Ironhand 6 · 3⤊ 1⤋
ECM ECU LINK
2015-03-01 18:59:51 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Go visit the new generation forum at http://www.ultimatesubaru.net
There are lots of knowledgeable people on there.
Are you sure the defrost function isn't on? I'm pretty sure that will turn on the A/C and the fan.
2006-10-10 07:08:13 · answer #5 · answered by Anonymous · 1⤊ 0⤋
Unplug the cooling fan sensor. If the fan stops. that is the problem. If it doesn't, unplug the fan relay. If the fan stops, that is your problem. Master tech 40 yrs.
2006-10-10 07:01:58 · answer #6 · answered by Cal 5 · 1⤊ 0⤋