Intake Air Temperature - Lotus Evora Service Notes

Lotus Service Notes

Intake Air Temperature

P0111 Intake Air Temperature Sensor 1 Circuit Range/Performance
P0112 Intake Air Temperature Sensor 1 Circuit Low
P0113 Intake Air Temperature Sensor 1 Circuit High
Description
The combined sensor which measures both Mass Air Flow (MAF) and Intake Air Temperature (IAT) is incorpo-
rated into the air box. The IAT sensor is a thermistor device which changes resistance with temperature. As
air intake temperature decreases the thermistor resistance value increases, and conversely as air temperature
increases so the thermistor resistance value decreases.
Sensor connections
Sensor Connector Description
1 IAT Signal
2 IAT Ground
3 Battery Voltage
4 MAF Ground
5 MAF Signal
Sensor characteristics
IAT -20°C (-4°F) 13.6 – 18.4 kΩ
IAT 20°C (68°F) 2.21 – 2.69 kΩ
IAT 60°C (140°F) 0.50 – 0.67 kΩ
P0111
ECU Pin ECU Connector
J3 48 Way (Centre)
E3 48 Way (Centre)
- -
J4 48 Way (Centre)
G1 48 Way (Centre)
2009/02
Section EMR
Page 17