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Signal Specification

All the values given below are between the terminals stated in column 1 and terminal #A2 in column 2 (signal ground). This applies unless otherwise indicated in brackets.

NOTE: It is important to check ground terminals before taking readings.
U= DC voltage in volts (V) Ulow = Voltage approximately 0 V
Ubat = Battery voltage (V) - -
Fig 1: Identifying Connector B
GLL101931Courtesy of VOLVO CARS CORPORATION
CONNECTOR A

Terminal  Breakout box terminal  Signal type  Ignition on  Other 
#A1 - 30 supply U = Ubat -
Fig 2: Identifying Connector C
GLL108086Courtesy of VOLVO CARS CORPORATION
CONNECTOR B

Terminal  Breakout box terminal  Signal type  Ignition on  Other 
#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 -