Traction Control Indicator Lamp: Description and Operation

Traction Control Warning Lamp





The traction control warning lamp within the instrument pack utilises a red LED and a clear legend. The traction control warning lamp informs the driver that the traction control system is enabled. The switch is hard wired to the SLABS ECU. The SLABS ECU controls the warning lamp on or off via a high or low voltage signal to the instrument pack. When the ignition is switched on, the SLABS ECU 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 power input for the LED is supplied by the instrument pack via fuse 27. The SLABS ECU provides the earth path to illuminate the warning lamp.

The voltage on the SLABS ECU earth path to the instrument pack is as follows:
^ < 1.8 volts = warning lamp on.
^ > 7.7 volts = warning lamp off.