Found Thermo Fan Switch Conditions
Aug 7, 2013, 09:02 AM
#107
Aug 20, 2013, 06:27 PM
#108
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I understand the pwm signal for the radiator fans, and it seems that it is +ve when fan is on.
Is this a +5v signal? If so, in a 1g conversion is it as simple as running a solid state relay on the pwm signal to run the fans as variable speed?
Thankyou
Is this a +5v signal? If so, in a 1g conversion is it as simple as running a solid state relay on the pwm signal to run the fans as variable speed?
Thankyou
Sep 29, 2013, 08:23 AM
#110
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Reviving from the dead to ask the question in a more "lame man" form. I apologize in advance as I'm not as savvy as most on here when it comes to ECUflash.
I eliminated my AC a while back, but have the wiring for the condenser fan still present. What I'm wanting to do is use this to add a second fan to my radiator for additional cooling.
I understand for a fact that using AEM, I can do this. So theoretically it is possible to do this with the stock ecu, right? Has anyone else done this, and if so what tables do I need to address to control it?
I eliminated my AC a while back, but have the wiring for the condenser fan still present. What I'm wanting to do is use this to add a second fan to my radiator for additional cooling.
I understand for a fact that using AEM, I can do this. So theoretically it is possible to do this with the stock ecu, right? Has anyone else done this, and if so what tables do I need to address to control it?
Sep 29, 2013, 07:25 PM
#111
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Us its possible.
The fan control tables have a column for the second thermo to come in on extreme conditions, simply set that desired temp and away you go.
The fan control tables have a column for the second thermo to come in on extreme conditions, simply set that desired temp and away you go.
Apr 18, 2014, 05:58 AM
#113
Bump of an old thread (again). I just loaded table xmls into my rom with the intent to modify both the thermo fan and condenser fan controls. I think I pulled all the definitions in that I need, but the tables to not make sense right now. See attached.
I modified the main and main+ac columns in the thermo fan tables to bring the thermo fan on earlier and faster. The ac columns were already at 100 in every cell. What do they do? The ac fan is not on all the time. Has anyone figured out what they are used for? I've seen description that main is thermo fan speed when ac off, and main+ac is thermo fan speed when ac is on.
For the AC fan control tables, do these values make sense to anyone? I'm guessing the low duty table is referencing the thermo fan tables. If I put less than 23 in the table it will use low speed relay. Greater will use high speed relay. The ac fan high speed, high coolant and high rpm tables seem to be not used. The valves for on off are the same and out of the normal operating range.
AC main coolant table seems like it is trying to turn the fan on at 149 and back off at 158??? That is a low temp. It may also be labeled wrong. If anything, I would expect a fan on temp higher than the fan off, so the fan comes on when the high trip is reached and does not shut off until the low is attained (hysteresis).
AC Main TPS might be ok, since it will kill the whole AC system above 82% throttle and bring it back on after you let off. This fits with normal operation, so the load on the motor is reduced when you are asking for full motor power.
If anyone has experience with these tables and their function, please chime in. I have not started playing with them in the car yet. Might be able to next week.
I modified the main and main+ac columns in the thermo fan tables to bring the thermo fan on earlier and faster. The ac columns were already at 100 in every cell. What do they do? The ac fan is not on all the time. Has anyone figured out what they are used for? I've seen description that main is thermo fan speed when ac off, and main+ac is thermo fan speed when ac is on.
For the AC fan control tables, do these values make sense to anyone? I'm guessing the low duty table is referencing the thermo fan tables. If I put less than 23 in the table it will use low speed relay. Greater will use high speed relay. The ac fan high speed, high coolant and high rpm tables seem to be not used. The valves for on off are the same and out of the normal operating range.
AC main coolant table seems like it is trying to turn the fan on at 149 and back off at 158??? That is a low temp. It may also be labeled wrong. If anything, I would expect a fan on temp higher than the fan off, so the fan comes on when the high trip is reached and does not shut off until the low is attained (hysteresis).
AC Main TPS might be ok, since it will kill the whole AC system above 82% throttle and bring it back on after you let off. This fits with normal operation, so the load on the motor is reduced when you are asking for full motor power.
If anyone has experience with these tables and their function, please chime in. I have not started playing with them in the car yet. Might be able to next week.
Nov 11, 2015, 08:30 PM
#115
I've a quiestion: how to set the ranges for the activate the AC fans? - "AC fan high coolant"/"AC main coolant" or change parameters in "thermo fan duty"?
Oct 10, 2016, 10:46 PM
#116
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Oct 12, 2016, 10:19 AM
#118
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