Coolant Temperature Sensor/Switch (For Computer): Description and Operation

GF07.04-P-6040G Coolant Temperature Sensor, Component Description
MODEL 463.306 /336 /346 up to 31.5.12
- as of model year 2011
/YoM 10
MODEL 463.202 /222 /236 /237 up to 31.5.12
- as of model year 2009
/YoM 08
MODEL 463.247 /248 /249 /254 up to 31.8.08
- as of model year 2007 model year 07.5, modification year 07
MODEL 463.270 /271 /303 /340 /341 up to 31.5.12
- as of model year 2007 model year 07.5, modification year 07





Shown on gasoline engine

B11/4 Coolant temperature sensor

Location
The coolant temperature sensor is located at the front on the engine.

Task
The coolant temperature sensor records the temperature of the coolant. The value of the coolant temperature sensor is read in by the CDI control unit (N3/9) (for diesel engines) or by ME-SFI [ME] control unit (N3/10) (for gasoline engines) and sent via the drive train CAN.

The EIS [EZS] control unit (N73) routs the value on the interior CAN. The AAC [KLA] control and operating unit (N22) reads in the value and uses this in regulation of the automatic climate control.