Where is the Passat's Water Temperature Sensor 2 located?
1 Answers
The Passat has two water temperature sensors, one is located on the water pump under the intake pipe, and the other is at the joint of the lower radiator hose. The water temperature sensor 2 is located at the joint of the lower radiator hose. Below is a brief introduction about the sensor: 1. When the water temperature sensor fails, it often displays the temperature signal of a hot engine during a cold start. The ECU cannot receive the signal to provide a richer air-fuel mixture and can only supply the engine with a leaner mixture (the signal for a hot engine), making it difficult to start the engine when cold. In this case, it is necessary to check whether the water temperature sensor plug is in proper contact or to replace the water temperature sensor. The water level sensor inside the container transmits the sensed water level signal to the controller. The computer inside the controller compares the actual water level signal with the set signal, calculates the deviation, and then issues an on/off command to the water supply electric valve based on the nature of the deviation to ensure the container reaches the set water level. 2. After the water intake process is completed, the computer in the temperature control section sends an open command to the electric valve supplying the heating medium, and the system begins to heat the water in the container. When the set temperature is reached, the controller issues a command to close the valve, cutting off the heat source, and the system enters a heat preservation state.
