2011 Volvo C70FACTORY OEM SERVICE PROCEDURE

Signal Specification

General 

All values specified below are between the relevant terminal and terminal #A8 (power ground).

NOTE:

It is important to check ground terminals before taking readings.

U= DC voltage in volts (V)    
Ubat = Battery voltage (V)    
Ulow = Voltage approximately 0 V    
       
Fig 1: Identifying Connector A
GLL101921Courtesy of VOLVO CARS CORPORATION
SIGNAL TABLE CONNECTOR A

Control module terminal  Signal type  Ignition off  Ignition on  Other 
#A1 15 supply U low U bat Ignition position II and III.
#A2 - - - -
#A3 - - - -
#A4 - - - -
#A5 - - - -
#A6 - - - -
#A7 CAN L - - During communication the voltage is 1.0-2.5 V.
#A8 Ground U low U low -
#A9 - - - -
#A10 - - - -
#A11 - - - -
#A12 - - - -
#A13 - - - -
#A14 CAN H - - During communication the voltage is 2.5-4.0 V.
#A15 - - - -
#A16 - - - -
Fig 2: Identifying Connector B
GLL146704Courtesy of VOLVO CARS CORPORATION
SIGNAL TABLE CONNECTOR B, CENTER TERMINAL

Control module terminal  Signal type  Ignition off  Ignition on  Other 
#B1 Signal ground, front parking sensor U low U low -
#B2 Voltage supply, front parking sensors U low U bat -
#B3 - - - -
#B4 - - - -
#B5 Signal, parking sensor 8 (outer left front) - - -
#B6 Signal, parking sensor 7 (inner left front) - - -
#B7 Signal, parking sensor 6 (inner right front) - - -
#B8 Signal, parking sensor 5 (outer right front) - - -
#B9 - - - -
#B10 - - - -
#B11 - - - -
#B12 - - - -
Fig 3: Identifying Connector C
GLL101919Courtesy of VOLVO CARS CORPORATION
SIGNAL TABLE CONNECTOR C

Control module terminal  Signal type  Ignition off  Ignition on  Other 
#C1 - - - -
#C2 Signal, parking sensor 3 (inner right rear) - - -
#C3 Signal, parking sensor 2 (inner left rear) - - -
#C4 Signal, parking sensor 4 (outer right rear) - - -
#C5 Signal, parking sensor 1 (outer left rear) - - -
#C6 - - - -
#C7 - - - -
#C8 Signal ground, rear parking sensors U low U low -
#C9 - - - -
#C10 - - - -
#C11 Voltage supply, rear parking sensors U low U bat -
#C12 - - - -
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.