#91186, "Custom Radiator Fan Switch Triggering CEL"
I tee'd the low speed fan relay output (neg. trigger) from the ECU to a switch in my interior. It functions how I want (since the charged side of the fan relay has +12v only when the ign switch is on), I leave the switch in the on position, and anytime my car is running the fan runs, but if I turn the switch off the fan functions normally.
Well, I get a CEL 35 "Low speed fan control relay circuit" when I ground the fan signal from the ecu to trigger the relay. I suppose if I put a diode before I tee off to my switch it would prevent this?
If you have a lower than stock temp. thermostat the stock fan trigger of 206* would cause a bad variance of engine temperature. I'm sure other people here have done a switch like this to keep your temps around what your thermostat is suppose to be and not wonder around?
Joel Baldridge, ASE Certified Master Technician, Audi Certified Expert Technician
#91200, "RE: Custom Radiator Fan Switch Triggering CEL" In response to Reply # 0
why do you have a control for the second fan? why not just have them both come one at the same time?
USED TO HAVE...Everything you wish you had, and then some...
You are somebody special Tim, you matter! - from the admins (but nobody likes you, because your username is just like that other guy's, and you whine a lot)
#91228, "RE: Custom Radiator Fan Switch Triggering CEL" In response to Reply # 2
The temperature variance is not a real issue.
If you don't want a CEL for it, don't ground the trigger, supply 12v instead. i think its the middle pin you want.
______________________________ If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.
'95 Eclipse TurboGS (garage deco) '95 TSi AWD (restoring a survivor) '97 Talon ESi-T (poor impulse control) '99 Eclipse RS-T (daily beater) '13 Evo X (mostly stock) '17 Sienna (Middle Aged Dad Mobile)
Search
Printer-friendly copy
3 Users in Chat
