LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Land Rover >> 1987 >> Range Rover >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Theory & Operation >> Computerized Engine Controls >> Input Devices >> Road Speed Transducer
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Road Speed Transducer

Road speed transducer is fitted between upper and lower speedometer cables. Road speed transducer is mounted on a bracket located on left hand chassis side member adjacent to rear engine mounting. Road speed transducer provides road speed data to ECM. ECM detects vehicle movement from road speed input and ensures idle speed control mode is disengaged. Should road speed transducer fail in service ECM idle speed control would become erratic.