B-5: CHECK CENTRAL MONITOR Carry out the following checks to ensure that the system operation of the buzzer or burnt out bulbs in the central is not prevented from giving warning due to defective monitor. ,s.\, ,, , 1. Before starting the engine, turn the starting switch : ,, to the ON position. All monitors and gauges should light up for approx. 3 seconds, and the alarm buzzer ,,. .: ,._ should sound. Check that the alarm buzzer does not sound after this.