Charge Air Temperature Sensor

WARNING: This page is about a different car, the 2017 Jaguar XJ, 2016 Jaguar XJ, 2015 Jaguar XJ, 2014 Jaguar XJ, and 2013 Jaguar XJ. However, it is still accessible from the selected car via links, so may be relevant.

The charge air temperature sensor is installed in the charge air cooler top cover. A two pin electrical connector provides the interface between the sensor and the engine harness. The sensor contains an NTC thermistor with supply and return connections to the ECM.

The ECM supplies the charge air temperature sensor with a 5 V reference voltage and translates the return voltage into a temperature. The ECM uses the input:

to monitor operation of the charge air coolant pump
for air mass calculations used in control of the supercharger bypass valve, as part of the charge air strategy that co-ordinates operation of the electric throttle and the bypass valve, and predicts the air mass delivered to the cylinders