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Rain Sensor

Fig 1: 10 CD Changer Connector Terminals

GLL104029

Courtesy of VOLVO CARS CORPORATION

Connector A, terminals #A1-#A5

U = DC in volts (V).

U_bat = battery voltage in volts (V).

U_low = voltage near 0 V.

Terminal, control module	Signal type	Ignition off	Ignition on	Miscellaneous
#A1	Serial communication	-	-	Data signal
#A2	Ground	U_low	U_low	-
#A3	Power supply	U_bat /0 V	U_bat /0 V	-
#A4	Windscreen wiper position signal	-	U_bat /0V	When the windscreen wipers are in the parked position, U must be U_bat . When the windscreen wipers are operating U must be 0 V (grounded).
#A5	Not used	-	-	-