Charge Air Temperature Sensor

WARNING: This page is about a different variant/trim than selected.

NOTE: The charge air temperature sensor is introduced together with the electric actuator for the supercharger bypass valve (in place of the vacuum actuator), which enables more accurate control of the bypass air flow.

Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

The charge air temperature sensor is located in the supercharger top cover. A 2-pin electrical connector provides the interface between the sensor and the engine wiring harness. The sensor contains a NTC resistor with supply and return connections to the PCM .

The PCM supplies the charge air temperature sensor with a 5V reference voltage. The PCM calculates the charge air temperature from a map of sensor voltage against temperature. The PCM uses the input:

To monitor operation of the charge air coolant pump.
For air mass calculations used in control of the supercharger bypass valve.

The PCM uses the inputs as part of the charge air strategy. The strategy coordinates operation of the electric throttle and the bypass valve and predicts the air mass delivered to the cylinders.

If the charge air temperature sensor fails, the PCM substitutes the input with a modelled temperature. The driver may not notice any change if the sensor fails.