Low fuel warning lamp

Fig 1: Identifying Low Fuel Warning Lamp

Courtesy of LAND ROVER NORTH AMERICA, INC.

The low fuel warning lamp within the instrument pack utilizes an amber LED and a clear legend. The ECM illuminates the LED when the fuel gauge pointer has reached 8 degrees from zero. The LED remains illuminated until fuel is added to move the fuel gauge pointer past 20 degrees from zero. This provides the driver with a visible warning that the fuel level in the tank is low.

When the ignition is switched on, the ECM illuminates the LED to provide a self-check, providing there is no fault it will remain illuminated for 3 seconds or until the ignition is switched off.

The sender unit resistance thresholds for switching the lamp on and off are shown in the table below:

The power input for the LED is supplied by the instrument pack via fuse 27. The ECM provides the earth path to illuminate the warning lamp.