Hi - Tesla Model S 85D, 2015.
I have a Condenser FAN (front left), going 100% speed as soon as i turn on the AC (or about 15 seconds after AC - ON, every time). The right one is going around 30% speed.
I just checked all my louvers (2 x front, Left and Right - and 2 x radiator, Left and Right), and everything is working as supposed to. (After changing my front left louver).
Outside temperature is about 70-75 F, which is not that hot IMO.
I have tried to read out some numbers from the PWM signal sent to each "Condenser Fan Control Module" after it kicks in.
Left CondensorFanControlModule:
Current: Meassured 18.3A between control module and ground connection.
PWN signal: 99,9% - 13,44V – 0.8 Hz to 430 Hz (Jumping around, most values around 1-25 Hz - Which seems strange?!)
Right CondensorFanControlModule:
Current: Meassured 2.7A between control module and ground connection
PWN Signal: 35.7% - 3.32V – 300.4 Hz (Very steady)
- Fuses and relays has been checked and swapped - No Change
- FAN speed should always be the same in each side - Of my knowledge
In the wiring diagram it says that the PWM signals connects to the thermal controller with 2 wires (FanPWM1 and FanPWN2)
Could it be:
- Bad thermal controller?
- Low pressure on the AC system/Low on refrigerant - The air is cold though (When i monitor the temperature of the refrigerant (ScanMyTesla) it goes pretty quick from 70 - 110 ish F)
- Something else?
I dont have a lot of knowledge about this PWM. However it seems like this signal should be sent from the Thermal Controller and that the signal sent to the Left Control Module is off in frequency (Hz)
If you got all the way to here, thanks alot
Have a great day
I have a Condenser FAN (front left), going 100% speed as soon as i turn on the AC (or about 15 seconds after AC - ON, every time). The right one is going around 30% speed.
I just checked all my louvers (2 x front, Left and Right - and 2 x radiator, Left and Right), and everything is working as supposed to. (After changing my front left louver).
Outside temperature is about 70-75 F, which is not that hot IMO.
I have tried to read out some numbers from the PWM signal sent to each "Condenser Fan Control Module" after it kicks in.
Left CondensorFanControlModule:
Current: Meassured 18.3A between control module and ground connection.
PWN signal: 99,9% - 13,44V – 0.8 Hz to 430 Hz (Jumping around, most values around 1-25 Hz - Which seems strange?!)
Right CondensorFanControlModule:
Current: Meassured 2.7A between control module and ground connection
PWN Signal: 35.7% - 3.32V – 300.4 Hz (Very steady)
- Fuses and relays has been checked and swapped - No Change
- FAN speed should always be the same in each side - Of my knowledge
In the wiring diagram it says that the PWM signals connects to the thermal controller with 2 wires (FanPWM1 and FanPWN2)
Could it be:
- Bad thermal controller?
- Low pressure on the AC system/Low on refrigerant - The air is cold though (When i monitor the temperature of the refrigerant (ScanMyTesla) it goes pretty quick from 70 - 110 ish F)
- Something else?
I dont have a lot of knowledge about this PWM. However it seems like this signal should be sent from the Thermal Controller and that the signal sent to the Left Control Module is off in frequency (Hz)
If you got all the way to here, thanks alot
Have a great day