Pollution Sensor

Pollution Sensor

The pollution sensor allows the ATC (automatic temperature control) module to monitor the ambient air for the level of hydrocarbons and oxidized gases such as nitrous oxides, sulphur oxides and carbon monoxide. The pollution sensor is installed at the rear of the radiator, on the upper right side (3.0L Diesel) or upper left side (4.2L and 4.4L) of the fan cowl.

The ATC (automatic temperature control) module outputs a battery power supply to heat the pollution sensor to operating temperature, and a 5 V reference voltage for the signal. The signal voltage from the pollution sensor is between 0 and 5 V.

If there is a fault with the pollution sensor, the ATC (automatic temperature control) module disables automatic closing of the recirculation doors on detection of pollutants.