Coolant Temperature Sensor: Notes

The coolant-temperature sensor is bolted to the front of the cylinder head and it picks up the coolant temperature via its changeable resistance.

The coolant temperature serves as a measured variable for the following functions:

• Exhaust-gas recirculation
• Fuel injection rate calculation
• Activation condition for air conditioning system
• Activation condition of the radiator shutter (not MINI)
• Electric auxiliary heater activation condition
• Charging pressure control
• Glow-period control
• Electric fan activation
• Swirl flap activation (not MINI)
• Idle-speed control
• Rail pressure control