Lotus Evora User Manual

Lotus Service Notes Section EMR
Page 19
Engine Coolant Temperature
P0116 Engine Coolant Temperature Circuit Range/Performance
P0117 Engine Coolant Temperature Circuit Low
P0118 Engine Coolant Temperature Circuit High
Description
The engine coolant temperature sensor is a thermistor device which changes resistance with temperature. As
coolant temperature decreases the thermistor resistance value increases, and conversely as coolant tempera-
ture increases so the thermistor resistance value decreases.
Sensor connections
Sensor Connector Description ECU Pin ECU Connector
1 Ground C3 48 Way (Centre)
2 Signal G2 48 Way (Centre)
Sensor characteristics
-20°C(-4°F)   =13.84–16.33KΩ
20°C(68°F)   =2.31–2.58KΩ
80°C(176°F)   =0.310–0.326KΩ
110°C(230°F)   =0.1399–0.1435KΩ
P0116
Monitor:
• Continuous
Disable Criteria:
• None
Enable Criteria 1:
• Enginerunning>1000seconds
Malfunction Criteria 1:
• Enginecoolanttemperature<40°C(104°F)
Enable Criteria 2:
• Enginerunning
Malfunction Criteria 2:
• Enginecoolanttemperatureerraticbymorethan30°C(54°F)
Potential failure modes:
• Sensorwiring
• Sensorfailure
• Thermostatfailure
Diagnostic Mask:
• TheMILwillbeilluminatedifthesefaultsarepresentfor2consecutivetrips.
P0117
Monitor:
• Continuous
Disable Criteria:
• None
2009/02

Lotus Evora Specifications

General

Brand	Lotus
Model	Evora
Category	Automobile
Language	English