INSTRUMENTS (Description): DESCRIPTION AND OPERATION (page 16 of 37)

INSTRUMENTS

88-20

DESCRIPTION AND OPERATION

Low fuel warning lamp

The low fuel warning lamp within the instrument pack utilises 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. 

Lamp on

Lamp off

Resistance, ohms

158 

±

 8

113 

±

 6

Fuel gauge pointer angle, degrees

8

20