A/C On
- The ECM will turn the cooling fans on at low speed when the A/C system is on. The ECM will change to high speed when the coolant temperature reaches 115°C (239°F) or the high side A/C pressure reaches 1859 kPa (270 psi).
- The cooling fans will return to low speed when the coolant temperature reaches 112°C (234°F) and the high side A/C pressure reaches 1449 kPa (210 psi).