In-Vehicle Temperature Sensor

WARNING: This page is about a different car, the 2021 Jaguar I-Pace, 2020 Jaguar I-Pace, and 2019 Jaguar I-Pace. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Right Hand Drive (RHD) vehicle is shown below, Left Hand Drive (LHD) vehicle is similar.

Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

The in-vehicle temperature sensor is located in the passenger compartment.

The in-vehicle temperature sensor is a Negative Temperature Coefficient (NTC) resistor installed behind an integral grill. A motor with fan within the sensor draws air in through the grille and over the NTC resistor.

The in-vehicle temperature sensor is hardwired to the HVAC control module by the wiring harness. The in-vehicle temperature sensor has a 4 pin connector to the wiring harness. The 4 pin connector has the following electrical connections:

A electric supply from the HVAC for the electric fan motor.
A ground connection for the electric fan motor to the HVAC.
The temperature sensor signal to the HVAC.
A ground connection for the temperature sensor only.

The HVAC uses the signal from the in-vehicle temperature sensor for control of the climate control assembly output temperatures, blower speed and air distribution.

If the in-vehicle temperature sensor develops a fault, the HVAC adopts a default temperature of 25°C (77°F).