SAFARI STORME MY14

HVAC 19 HVAC ii) BLOWER CONTROL MODULE The PWM Controller controls the speed of the blower motor using PWM signal. Based on the speed se- lected by the user, a low current, inverted PWM signal is produced in the Control Panel. This signal is then amplified by the PWM Controller which in turn drives the motor. PIN OUT CONNECTION DETAILS PIN OUT DESCRIPTION 1 PWM Signal 2 Blower Ground (Switched Ground) 3 Battery Ground 4 Ignition INSPECTION Check for the Output voltage values of Blower motor as per the table given below; FAN SPEED CORRESPONDING O/P VOLTAGE VALUES at BLOWER MOTOR TERMINALS 1 st 5.5 V 2 nd 7.5 V 3 rd 9 V 4 th 12.5 V