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Signal specification

WARNING: This page is about a different car, the 2007 Volvo V70. However, it is still accessible from the selected car via links, so may be relevant.

General 

All the values given below are between the respective terminal in column 1 and terminal #A6 in column 1 (power ground), if this is not the case, it is indicated within brackets.

NOTE:

It is important to check ground terminals before taking readings.

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 %    
Fig 1: Identifying Terminal
GLL156338Courtesy of VOLVO CARS OF NORTH AMERICA.
Signal table

Control module terminal  Signal type Ignition off Active/Inactive  Ignition on Active/Inactive  Other 
#A1 15-feed U low /Ulow Uhigh /Uhigh  
#A2 - - -  
#A3 Communication CAN_L high speed network During communication the voltage is 1.5-2.5 V  
#A4 Communication CAN_H high speed network During communication the voltage is 2.0-3.5 V  
#A5 Left headlamp control unit (LHCU), LIN communication During communication the voltage is 0 V - Ubat  
#A6 Power ground U low /Ulow U low /Ulow  
#A7 Right headlamp control unit (RHCU), LIN communication During communication the voltage is 0 V - Ubat  
#A8 - - -  
#A9 - - -  
#A10 - - -  
#A11 - - -  
#A12 -  
-
-  
#A13 - - -  
#A14 - - -  
#A15 - - -  
#A16 - - -