Lotus Service Notes Section EMR
Page 7
MR.2 - COMPONENT FUNCTION
Component Function
Mass Air Flow Meter Engine load detection
Intake Air Temperature Sensor Air temperature detection
Engine Coolant Temperature Sensor Engine coolant temperature detection
Throttle Position Sensor Determines engine throttle position
Pedal Position Sensor Determines pedal position requested by driver
Barometric Pressure Sensor Barometric pressure detection
O2 Sensor (Front) – Bank 1 Measures oxygen content in exhaust before
bank 1 primary catalyst
O2 Sensor (Front) – Bank 2 Measures oxygen content in exhaust before
bank 1 primary catalyst
O2 Sensor (Rear) – Bank 1 Measures oxygen content in exhaust after bank
1 primary catalyst
O2 Sensor (Rear) – Bank 2 Measures oxygen content in exhaust after bank
2 primary catalyst
Crankshaft Position Sensor Determines crankshaft position
Camshaft Position Sensor (Inlet) – Bank 1 Determines bank1 inlet camshaft position
Camshaft Position Sensor (Inlet) – Bank 2 Determines bank 2 inlet camshaft position
Camshaft Position Sensor (Exhaust) – Bank 1 Determines bank 1 exhaust camshaft position
Camshaft Position Sensor (Exhaust) – Bank 2 Determines bank 2 exhaust camshaft position
Knock Sensor – Bank1 Determines bank 1 engine detonation
Knock Sensor – Bank2 Determines bank 2 engine detonation
Fuel Level Sensor Determines fuel tank level
Air Conditioning Evaporator Temperature Sensor Evaporator temperature detection
Clutch Pedal Position Sensor Determines clutch pedal position
Brake Pedal Position Switch Determines brake pedal position
Cruise Control Multi-function Input Determines driver request for cruise control
Electronic Throttle Control Motor Actuates engine throttle
Injector Circuit – Cylinder 1 Regulates fuel injected into cylinder 1
Injector Circuit – Cylinder 2 Regulates fuel injected into cylinder 2
Injector Circuit – Cylinder 3 Regulates fuel injected into cylinder 3
Injector Circuit – Cylinder 4 Regulates fuel injected into cylinder 4
Injector Circuit – Cylinder 5 Regulates fuel injected into cylinder 5
Injector Circuit – Cylinder 6 Regulates fuel injected into cylinder 6
Ignition Circuit – Cylinder 1 Actuates spark plug in cylinder 1
Ignition Circuit – Cylinder 2 Actuates spark plug in cylinder 2
Ignition Circuit – Cylinder 3 Actuates spark plug in cylinder 3
Ignition Circuit – Cylinder 4 Actuates spark plug in cylinder 4
Ignition Circuit – Cylinder 5 Actuates spark plug in cylinder 5
Ignition Circuit – Cylinder 6 Actuates spark plug in cylinder 6
Variable Valve Timing Actuator (Inlet) – Bank 1 Actuates bank 1 inlet camshaft timing control
Variable Valve Timing Actuator (Inlet) – Bank 2 Actuates bank 2 inlet camshaft timing control
Variable Valve Timing Actuator (Exhaust) – Bank 1 Actuates bank 1 exhaust camshaft timing
control
Variable Valve Timing Actuator (Exhaust) – Bank 2 Actuates bank 2 exhaust camshaft timing
control
Variable Intake Manifold Actuator Actuates variable intake manifold
Primary Catalyst – Bank 1 Removes pollutants from exhaust
Primary Catalyst – Bank 2 Removes pollutants from exhaust
Secondary Catalyst Removes pollutants from exhaust
Evaporative Emission Control System Purge Control Valve Regulates fuel tank vapour flow into inlet
manifold
Fuel Pump Relay Actuates fuel pump
Starter Relay Actuates engine starter motor
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