Signal Description, Integrated Audio Module (IAM)

General

All the values given below are between the respective terminal in column 1 and terminal #A14 in column 2 (power ground) unless otherwise stated in brackets after the table entry.

NOTE:

It is important to connect the breakout box and check the ground connections before measuring.

U=	DC voltage in volts (V)	U_low =	Voltage approximately 0 V
U_bat =	Battery voltage (V)

Fig 1: Identifying Signal Table Connector A

Courtesy of VOLVO CARS CORPORATION

CONNECTOR A

Terminal	Breakout box terminal	Signal type	Ignition on	Miscellaneous
#A1	#1	Power supply	U = U_bat
#A2	#2	Control signal ring break	-	-
#A3	#3	Loudspeaker right rear door (+)	Analog output signal when the loudspeaker is in use	0 - 19 V depending on the output power from the Integrated Audio Module (IAM). Speaker impedance = 4 Ω
#A4	#4	Loudspeaker right front door (+)	Analog output signal when the loudspeaker is in use	0 - 19 V depending on the output power from the Integrated Audio Module (IAM). Speaker impedance = 4 Ω
#A5	#5	Loudspeaker left front door (+)	Analog output signal when the loudspeaker is in use	0 - 19 V depending on the output power from the Integrated Audio Module (IAM). Speaker impedance = 4 Ω
#A6	#6	Loudspeaker left rear door (+)	Analog output signal when the loudspeaker is in use	0 - 19 V depending on the output power from the Integrated Audio Module (IAM). Speaker impedance = 4 Ω
#A7	#7	-	-	-
#A8	#8	Ground	U=U_low
#A9	#9	-	-	-
#A10	#10	Loudspeaker right rear door (-)	Analog output signal when the loudspeaker is in use	0 - 19 V depending on the output power from the Integrated Audio Module (IAM). Speaker impedance = 4 Ω
#A11	#11	Loudspeaker right front door (-)	Analog output signal when the loudspeaker is in use	0 - 19 V depending on the output power from the Integrated Audio Module (IAM). Speaker impedance = 4 Ω
#A12	#12	Loudspeaker left front door (-)	Analog output signal when the loudspeaker is in use	0 - 19 V depending on the output power from the Integrated Audio Module (IAM). Speaker impedance = 4 Ω
#A13	#13	Loudspeaker left rear door (-)	Analog output signal when the loudspeaker is in use	0 - 19 V depending on the output power from the Integrated Audio Module (IAM). Speaker impedance = 4 Ω
#A14	#14	-	-	-

Fig 2: Identifying Connector B

Courtesy of VOLVO CARS CORPORATION

CONNECTOR B

Terminal	Signal type	Miscellaneous
#B1	MOST input signal	Optical input signal when the MOST network is activated
#B2	MOST output signal	Optical output signal when the MOST network is activated

Fig 3: Identifying Connector C

Courtesy of VOLVO CARS CORPORATION

CONNECTOR C

Terminal	Breakout box terminal	Signal type	Ignition on	Miscellaneous
#C1		Antenna signal		Input signal FM Sub antenna Phantom power supply for the antenna amplifier(11.0 V ±0.5 V at 13.5 V battery voltage)
#C2		Antenna signal		Input signal AM/FM Main antenna