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Signal Specification: General

U= DC voltage in volts (V) UAC = AC voltage in volts (V)
Ubat = Battery voltage (V) f = Frequency in Hertz (Hz)
Ulow = Voltage approximately 0 V t = Time in seconds
PWM = Pulse width modulated signal as a %    

Connector C1 

Fig 1: Identifying Connector C442
GLL154727Courtesy of VOLVO CARS CORPORATION
SIGNAL TABLE, CONNECTOR C1

Breakout box terminal  Control module terminal  Signal type  Ignition on  Other 
  #1 30-feed Ubat -
  #2 Ground Ulow -

Connector C2 

Fig 2: Identifying Connector MOST (Optical Signal)
GLL153820Courtesy of VOLVO CARS CORPORATION
SIGNAL TABLE, CONNECTOR C2

Breakout box terminal  Control module terminal  Signal type  Ignition on  Other 
  #1 MOST input signal   Optical input signal when the MOST network is activated
  #2 MOST output signal   Optical output signal when the MOST network is activated

Connector C3 

Fig 3: Identifying Subwoofer Module (SUB) Connector C3
GLL161105Courtesy of VOLVO CARS CORPORATION
SIGNAL TABLE, CONNECTOR C3

Breakout box terminal  Control module terminal  Signal type  Ignition on  Other 
  #1 Sub channel 1 (-)    
  #2 Sub channel 1 (-)    
  #3      
  #4 Sub channel 2 (-)    
  #5 Sub channel 2 (-)    
  #6 Sub channel 1 (+)    
  #7 Sub channel 1 (+)    
  #8      
  #9 Sub channel 2 (+)    
  #10 Sub channel 2 (+)    
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