INSTRUMENTS (Description): DESCRIPTION AND OPERATION (page 10 of 37)

INSTRUMENTS

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DESCRIPTION AND OPERATION

Overspeed warning lamp

The overspeed warning lamp within the instrument pack utilises an amber LED and a clear legend. The BCU 
illuminates the LED when the vehicle speed has exceeded 77 mph (123 km/h) and remains on until the vehicle speed 
falls below 74 mph (118 km/h), providing the driver with a visible warning. There is no self-check for this warning lamp.

There are two configurations for this warning lamp:

l

Gulf  = symbol.

l

All other markets  = disabled.

The instrument pack provides the power input and the warning lamp is controlled by the instrument pack according 
to PWM signal received from the ECM. The road speed information is derived from the SLABS ECU.

The lamp activation thresholds are shown in the table below

Lamp on

Lamp off

Input pulse, Hz

165.75

158.83

Road speed, mph (km/h)

77 (123)

74 (118.5)