LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Volvo >> 2004 >> V70 R, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Alarm System, Control Modules, Engine Management Systems - Design And Function >> Central Locking (2005-2007) >> Signals
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Central Locking (2005-2007): Signals

The tables below summarize the input and output signals to the units in the central locking function. The signal types are divided into directly connected signals and Controller Area Network (CAN) communication.

Rear electronic module (REM) (4/58):

Input signals Output signals
Directly connected:  Directly connected: 
  • Contact breaker, trunk lid, for opening trunk lid (S80/S60).
  • Contact breaker in lock unit, driver's door, for indicating open door.
  • Contact breaker in lock unit, passenger door, for indicating open door.
  • Contact breaker in lock unit, right-hand rear door, for indicating open door.
  • Contact breaker in lock unit, left-hand rear door, for indicating open door.
  • Contact breaker in lock unit, tailgate/trunk lid, for indicating open tailgate/trunk lid.
  • Contact breaker, hood, for indicating open hood (only vehicles with alarm).
  • Contact breaker in lock unit, left-hand rear door, for indicating lock motor status.
  • Contact breaker in lock unit, right-hand rear door, for indicating lock motor status.
  • Lock unit, tailgate/trunk lid, for activating lock motor.
  • Lock motor, fuel tank filler cover, for activating lock motor.
  • Lock unit in left-hand rear door, for activating lock motors.
  • Lock unit in right-hand rear door, for activating lock motors.
Via Controller Area Network (CAN) communication:  Via Controller Area Network (CAN) communication: 
  • Driver door module (DDM), for status information on certain lock motors.
  • Passenger door module (PDM), for status information on certain lock motors.
  • Engine control module (ECM) for information on the status of the engine.
  • Brake control module (BCM), for information on vehicle speed.
  • Transmission control module (TCM), indicates the position of the gear selector.
  • Central electronic module (CEM), for information on the type of key used to unlock the vehicle and the request to open the fuel tank filler cover.
  • Driver door module (DDM), for locking and unlocking commands.
  • Passenger door module (PDM), for locking and unlocking commands.
  • Central electronic module (CEM), with the request for acknowledgment via direction indicators and activation of acoustic signal (key warning).
Driver door module (DDM) (3/126):

Input signals Output signals
Directly connected:  Directly connected: 
  • Indication of locked mode from the lock motor
  • Central locking switch
  • Output signal to driver's door lock unit for activation of central locking motor.
  • Output signal to driver's door lock unit for activation of deadlocking motor.
Via Controller Area Network (CAN) communication:  Via Controller Area Network (CAN) communication: 
  • Rear electronic module (REM), for locking and unlocking commands.
  • Rear electronic module (REM), for status information on certain lock motors.
Passenger door module (PDM) (3/127):

Input signals Output signals
Directly connected:  Directly connected: 
  • Indication of locked mode from the lock motor
  • Central locking switch
  • Output signal to passenger door lock unit for activation of central locking motor.
  • Output signal to passenger door lock unit for activation of deadlocking motor.
Via Controller Area Network (CAN) communication:  Via Controller Area Network (CAN) communication: 
  • Rear electronic module (REM), for locking and unlocking commands.
  • Rear electronic module (REM), for status information on certain lock motors.
Climate control module (CCM) (3/112):

Input signals Output signals
Via Controller Area Network (CAN) communication:  Via Controller Area Network (CAN) communication: 
  • Rear electronic module (REM), for activation of LEDs in switches for activated function (private locking, child safety locks, reduced alarm).
  • Rear electronic module (REM), if switch for reduced alarm is pressed (no deadlocking).
  • Rear electronic module (REM), if switch for private locking is pressed (S80/S60).
  • Rear electronic module (REM), if switch for child safety locks is pressed (option).
Driver information module (DIM) (5/1):

Input signals Output signals
Via Controller Area Network (CAN) communication:  Via Controller Area Network (CAN) communication: 
  • Rear electronic module (REM), for information on whether information lamp or warning lamp is to be lit.
  • Rear electronic module (REM), for information on which text message is to be displayed.
  • Central electronic module (CEM), for activation of acoustic signal (key warning).
 -
Upper electronic module (UEM) (4/70):

Input signals Output signals
Wireless communication:  Wireless communication: 
  • Signal from remote control.
 -
Via Controller Area Network (CAN) communication:  Via Controller Area Network (CAN) communication: 
-
  • Rear electronic module (REM), with the request for activation of a function.
  • Central electronic module (CEM), Comfort functions.
Central electronic module (CEM) (4/56):

Input signals Output signals
Directly connected:  Directly connected: 
  • Light switch module (LSM) (3/111), signal from switch for opening fuel tank filler cover.
 -
scientia non olet · About LEMON Manuals