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Signal Specification, Power Seat Module (PSM)

Connecting the breakout box and checking the ground terminals 

Before taking readings, the breakout box and ground terminal must be checked.

see CHECKING THE VOLTAGE / GROUND TERMINAL

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
       
Fig 1: Identifying Ground Terminals
GLL141034Courtesy of VOLVO CARS OF NORTH AMERICA.
SIGNAL TABLE - CONNECTOR A

Breakout box terminal  Control module terminal  Signal type  Ignition off 
Not active / Active 		 Ignition off 
Not active / Active 		 Miscellaneous 
  #A1 Ground Ulow Ulow  
  #A2 Motor -, common U = Ulow / U = U bat U = Ulow / U = U bat M1-, M2-, M3-, M4-
  #A3 Motor 4+ U = Ulow / U = U bat U = Ulow / U = U bat Regulates the angle of the front edge of the seat.
  #A4 Motor 3+ U = Ulow / U = U bat U = Ulow / U = U bat Regulates the height of the seat.
  #A5 Motor 2+ U = Ulow / U = U bat U = Ulow / U = U bat Regulates the backrest rake.
  #A6 Motor 1+ U = Ulow / U = U bat U = Ulow / U = U bat Regulates the front-rear adjustment of the seat.
  #A7 Power supply U = Ubat U = Ubat  
Fig 2: Identifying M2D Control Module (FORTV Executive. Rear Seat Entertainment, Generation 3.1/3.2, Premier TV Receiver) Connector
GLL104056Courtesy of VOLVO CARS OF NORTH AMERICA.
SIGNAL TABLE - CONNECTOR B

Breakout box terminal  Control module terminal  Signal type  Ignition off 
Not active / Active 		 Ignition off 
Not active / Active 		 Miscellaneous 
#43 #B1 -      
#44 #B2 Ground Ulow Ulow  
#45 #B3 Control module, communication cable (CAN L) 1.5 - 2.5 V 1.5 - 2.5 V  
#46 #B4 Control module, communication cable (CAN H) 2.5 - 3.5 V 2.5 - 3.5 V 2.5 - 3.5 V  
#47 #B5 - Ulow Ulow  
#48 #B6 Signal supply, Ext-X Ulow Ulow  
#49 #B7 Hall sensor 4 U = Ubat / A pulsed signal with duty = 50%
f <= 100 Hz		 U = Ubat / A pulsed signal with duty = 50%
f <= 100 Hz		 One pulse per engine revolution
High pulse value: U bat
Low pulse value: 7.0 - 9.0 V (60 - 70% of Ubat )
#50 #B8 Hall sensor 3 U = Ubat / A pulsed signal with duty = 50%
f <= 100 Hz		 U = Ubat / A pulsed signal with duty = 50%
f <= 100 Hz		 One pulse per engine revolution
High pulse value: U bat
Low pulse value: 7.0 - 9.0 V (60 - 70% of Ubat )
#51 #B9 Hall sensor 2 U = Ubat / A pulsed signal with duty = 50%
f <= 100 Hz		 U = Ubat / A pulsed signal with duty = 50%
f <= 100 Hz		 One pulse per engine revolution
High pulse value: U bat
Low pulse value: 7.0 - 9.0 V (60 - 70% of Ubat )
#52 #B10 Hall sensor 1 U = Ubat / A pulsed signal with duty = 50%
f <= 100 Hz		 U = Ubat / A pulsed signal with duty = 50%
f <= 100 Hz		 One pulse per engine revolution
High pulse value: U bat
Low pulse value: 7.0 - 9.0 V (60 - 70% of Ubat )
#53 #B11 Ground, hall sensor 4 Ulow Ulow  
#54 #B12 Ground, hall sensor 3 Ulow Ulow  
#55 #B13 Ground, hall sensor 2 Ulow Ulow  
#56 #B14 Ground, hall sensor 1 Ulow Ulow  
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