low speed fan pinout

Holden/Delco Tuning. ALDL, OBD 1.5. Circa 1989 to 2004.
Dazza92VP
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low speed fan pinout

Post by Dazza92VP »

im probably just blind as a bat but i couldnt find a pin out for the low speed fan on an 808 its in a vq v8 stato.
but i did find on the ose$12p thread page that the functions been removed and set to use a flex table is that right
cheers
Darren
Dazza92VP
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Re: low speed fan pinout

Post by Dazza92VP »

ok so i got impatient and just wired them both into the same circuit all runs good but now the problem is teh ecm isnt turning the fans off once its over the road speed 55km/h +8km/h ive had it up to 90k and its still registering as on any ideas
yoda69
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Re: low speed fan pinout

Post by yoda69 »

Is that speed from the ECU (datalogging) or what the speedo is showing?
Dazza92VP
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Re: low speed fan pinout

Post by Dazza92VP »

thats what the ecu shows
yoda69
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Re: low speed fan pinout

Post by yoda69 »

Being a VQ thought the ppk may have been wrong, but looks like it's ok so it must be something else?
Dazza92VP
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Re: low speed fan pinout

Post by Dazza92VP »

yea had that problem a while ago it wasnt locking up the tcc and that was because of the ppk but ive sorted that out now and its dead on but this has got me stumped. i changed the fan road speed setting a couple of time just to make sure i hadnt used a bin that had it changed to what i wanted and not actually uploaded but its definately at 55km/h in the ecu im stumped with this one
yoda69
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Re: low speed fan pinout

Post by yoda69 »

Will need VL400 to confirm but I think the following is correct.
The fan will be on if Coolant Temp is/has been greater than the fan on temp and is yet to meet the 5 or 6C hysterisis to turn off, regardless of vehicle speed. ie.100km/h hot day towing the fan will be on if it is required regardless of vehicle speed.
The speed control will only work if you have AC On and the Coolant Temp is below the fan on temp when you are above 55km/h in your case.
Dazza92VP
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Re: low speed fan pinout

Post by Dazza92VP »

oh righto yea well the temp didnt drop below the hystersis at all
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VL400
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Re: low speed fan pinout

Post by VL400 »

Yoda is spot on in explaining the way the fan works with the temp and speed scalars. The speed item is just so the fan can assist in cooling the condenser with A/C on at low speeds, above 55kph it is not needed.
Dazza92VP
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Re: low speed fan pinout

Post by Dazza92VP »

ok thanks for that guys