Transmission Fluid Temperature (Cooling Fan Operation)

One of the indirect outputs from the TCM is the Transmission fluid temperature. The PCM monitors the transmission fluid temperature at all times. When the fluid temperature reaches 244°F the Low Speed Radiator Fan is turned ON. It will be turned back OFF when the fluid temperature drops below 236°F. If the transmission fluid temperature reaches 250°F then Hi Speed Radiator Fan is turned ON. The Hi Speed Radiator Fan is turned back OFF when the temperature drops to 244°F or lower.