LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Land Rover >> 2003 >> Range Rover >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - Without Codes >> Introduction >> Inputs & Outputs
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inputs & Outputs

INPUTS & OUTPUTS

Signals Monitored By OBD II
Transmission Control Module (Torque Reduction Request) Yes - Bus Check
Engine Coolant Temperature Yes
Intake Air Temperature Yes
Mass Airflow Yes
Oxygen Sensors Yes
Crankshaft Position/Speed Yes
Camshaft Position Yes
Throttle Position Yes
Vehicle Speed Yes
Knock Sensor Yes
Driver Demand Sensor No
Ambient Air Temperature (via CAN) Yes (No MIL)
Soak Time (via CAN) No
Fuel Level (via CAN) Yes (No MIL)
Radiator Outlet Temperature Yes
Cruise Control Switches No
Brake Pedal Position No
Transfer Gear Range (via CAN) Yes (No MIL)
EVAP System (Leak Diagnosis Module - Pump Motor Current) Yes
Output Signals 
Transmission Control Module Yes - Signals Checked Separately
Throttle Actuator Yes
Ignition Coils Via Misfire Monitoring
Injection Valves Yes
Secondary Air Injection Pump & Valve Yes
EVAP Canister Purge Valve Yes
Switching Valves (Variable Camshaft Timing) Yes
Malfunction Indicator Lamp (MIL) (via CAN) Not directly
EVAP System (Leak Diagnosis Module - Pump Motor & Solenoid Valve) Yes
EVAP System (Leak Diagnosis Module - Heater) Yes (No MIL)
Oxygen Sensor Heating Yes
Fuel Pump Relay No
Air Conditioning Compressor Relay No
Auxiliary Engine Cooling Fan No
Thermostat Heating Element No
Engine Starter Relay No