Discovery Series I

Generic Engine Management System (GEMS) is an electronic ignition and fuel injection system which includes idle speed control, engine load management and security functions. Fuel is provided by full sequential fuel injection. GEMS is controlled by an Electronic Control Module (ECM) which receives data from sensors located on and around the engine. From this information, the ECM provides the correct fuel requirements and ignition timing at all engine loads and speeds.

An on-board diagnostic system detects any faults that may occur within the system. Fault diagnosis include failure of any system sensor or actuator, emission related items, fuel supply and exhaust systems.

The system incorporates default strategies for some sensor failures which will enable the engine to operate in the event of a sensor failure. See suspect component listed under INPUT DEVICES  for description of default strategies, if available. A fault is indicated by illumination of the Maintenance Indicator Light (MIL).