Intake Air Temperature Interface Description

The intake air temperature interface consists of 1 analogue voltage input signal for Intake Air Temperature. See Fig 1 .

There are two Intake Air Temperature Sensor diagnostic, a fault is detected if:

1. The resistance of the sensor exceeds a minimum or maximum threshold.
2. Excessive difference between intake air temp and Coolant temperature following engine start is detected, or the intake air temperature is high while the vehicle is driving.

Fig 1: Intake Air Temperature Sensor Monitoring & Enabling Conditions

Courtesy of LAND ROVER NORTH AMERICA, INC.