Directly connected input signals from the sensors / switches to the control module:

Directly connected output signals to the controlled components / functions from the control module:

Central electronic module (CEM)(4/56)

• All doors, closed/open
• Rear doors, locked/unlocked
• Tailgate, closed / open
• Hood, closed/open
• Resistive wire, broken/unbroken (only V70/V70XC).

Central electronic module (CEM)(4/56)

• The turn signal lamps, on/off
• Alarm diode (3/112), on/off. (via the climate control module (CCM).

The climate control module(3/112)

• Switch for reduced alarm, on/off.

The climate control module(3/112)

• Alarm diode, on/off. Direct cable from the central electronic module through the climate control module.

The driver's door module(3/126)

• Driver's door, locked/unlocked
• Key, locking / neutral position/ unlocking.

The passenger door module(3/127)

• The passenger door, locked/unlocked.

Received information to control modules via Controller Area Network (CAN):

Transmitted information to control modules via Controller Area Network (CAN):

The central electronic module (4/56) receives from:

The climate control module (3/112)

• Switch for reduced alarm, on/off.

Driver's door module (DDM) (3/126)

• Driver's door, locked/unlocked
• Key, locking / unlocking.

Passenger door module (3/127)

• Passenger door, locked/unlocked.

Rear electronic module (4/58)

• Vehicle inclination sensor status from the inclination sensor module.

Upper electronic module (4/70)

• Button status from the remote control, LOCK/ UNLOCK
• Battery status siren
• The status of the Mass movement sensor.

The central electronic module (4/56) transmits to:

The driver information module (5/1)

• Text message in the text window.

Driver information module (5/1) receives from:

The central electronic module (CEM) (4/56)

• Text message.

The upper electronic module (4/70) transmits to:

The central electronic module (CEM) (4/56)

• Remote control signal. LOCK, UNLOCK, BOOT
• The status of the Mass movement sensor
• Battery status siren.

Received information to control modules via serial communication:

Transmitted information to control modules via serial communication:

The rear electronic module (4/58) receives from:

Inclination sensor module (7/100)

• Vehicle inclination sensor status.

The upper electronic module (4/70) transmits to:

Siren control module (16/35)

• Activate/deactivate the siren
• The mass movement sensor (7/122), on/off.

The upper electronic module (4/70) receives from:

The mass movement sensor (7/122)

• Movement in the passenger compartment.

Siren control module (16/35)

• Battery status.

Rear electronic module (4/58) transmits to:

Inclination sensor module (7/100), on/off.

Directly connected input signals from the sensors / switches to the control module:

Directly connected output signals to the controlled components / functions from the control module:

Brake control module (BCM) / ABS control module, (4/16)

• Vehicle speed sensors (VSS) from all wheels, vehicle speed signal.

Central electronic module (CEM)(4/56)

• All turn signal lamps, on/off
• Shift relay deadlock/power child lock in rear doors.

Central electronic module (CEM)(4/56)

• All doors, closed/open
• Rear doors, locked/unlocked
• Tailgate, closed / open
• Collision output signal from SRS (supplemental restraint system) control module, collision/no collision.

The driver's door module(3/126)

• Driver's door lock motor, lock/unlock
• Lock motor deadlocked, lock/unlock.

The climate control module(3/112)

• Switch for reduced alarm, on/off
• Switch child lock, on/off
• Switch valet lock, on/off.

The passenger door module(3/127)

• Passenger door lock motor, lock/unlock
• Lock motor deadlocked, lock/unlock.

The driver's door module(3/126)

• Driver's door, locked/unlocked
• Key, locking / unlocking.

Rear electronic module(4/58)

• Rear doors lock motors, lock/unlock
• Lock motor deadlocked, lock/unlock
• Power child lock motors, lock/unlock
• Fuel tank filler cover lock motor, lock/unlock
• Tailgate lock motor, lock/unlock (only V70/V70XC)
• Pop-up motor trunk lid (only S60/S80).

The passenger door module(3/127)

• The passenger door, locked/unlocked.

SRS control module(4/9)

• Collision output signal to the central electronic module, collision/no collision.

Rear electronic module(4/58)

• Switch in the trunk lid, on/off (S60/S80 only).

Received information to control modules via Controller Area Network (CAN):

Transmitted information to control modules via Controller Area Network (CAN):

The central electronic module (4/56) receives from:

The brake control module (ABS-control module) (4/16)

• Speed, speed signal.

The climate control module (3/112)

• Switch for reduced alarm, on/off
• Switch child lock, on/off
• Switch valet lock, on/off.

Driver's door module (DDM) (3/126)

• Driver's door, locked/unlocked
• Key, locking / unlocking
• Switch door panel, on/off.

Passenger door module (3/127)

• Passenger door, locked/unlocked
• Switch door panel, on/off.

Rear electronic module (4/58)

• Switch in the trunk lid, on/off (S60/S80 only).

Upper electronic module (4/70)

• Remote control signal. LOCK, UNLOCK and TRUNK.

The central electronic module (4/56) transmits to:

The driver information module (5/1)

• Text message, reduced alarm, valet lock, child lock and fuel tank filler cover unlocked (only cars with switch for fuel tank filler cover opening).

Driver's door module (DDM) (3/126)

• Driver's door lock motor, lock/unlock
• Lock motor deadlocked, lock/unlock.

Passenger door module (3/127)

• Passenger door lock motor, lock/unlock
• Lock motor deadlocked, lock/unlock.

Rear electronic module (4/58)

• Rear doors lock motors, lock/unlock
• Lock motor deadlocked, lock/unlock
• Power child lock motors, lock/unlock
• Fuel tank filler cover lock motor, lock/unlock
• Tailgate lock motor, lock/unlock (only V70/V70XC)
• Pop-up motor trunk lid (only S60/S80).

Driver information module (3/126) receives from:

The central electronic module (CEM) (4/56)

• Driver's door lock motor, lock/unlock
• Lock motor deadlocked, lock/unlock.

The brake control module (ABS-control module) (4/16) transmits to:

The central electronic module (CEM) (4/56)

• Speed, speed signal.

Driver information module (5/1) receives from:

The central electronic module (CEM) (4/56)

• Text message, reduced alarm, valet lock, child lock and fuel tank filler cover unlocked (only cars with switch for fuel tank filler cover opening).

Driver's door module (DDM) (3/126) transmits to:

The central electronic module (CEM) (4/56)

• Driver's door, locked/unlocked
• Key, locking / unlocking
• Door panel switch, active/not active.

Passenger door module (3/126) receives from:

The central electronic module (CEM) (4/56)

• Passenger door lock motor, lock/unlock
• Lock motor deadlocked, lock/unlock.

The passenger door module (3/126) transmits to:

The central electronic module (CEM) (4/56)

• Passenger door, locked/unlocked
• Door panel switch, active/not active.

The rear electronic module (4/58) receives from:

The central electronic module (CEM) (4/56)

• Rear doors lock motors, lock/unlock
• Lock motor deadlocked, lock/unlock
• Power child lock motors, lock/unlock
• Fuel tank filler cover lock motor, lock/unlock
• Tailgate lock motor, lock/unlock (only V70/V70XC),
• Pop-up motor trunk lid (only S60/S80).

Rear electronic module (4/58) transmits to:

The central electronic module (CEM) (4/56)

• Switch in the trunk lid, on/off (S60/S80 only).

The upper electronic module (4/70) transmits to:

The central electronic module (CEM) (4/56)

• Remote control signal, LOCK, UNLOCK and BOOT.

Input signals

Output signals

• 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.

• 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 acknowledgement via direction indicators and activation of acoustic signal (key warning).

Input signals

Output signals

• 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.

• Rear electronic module (REM), for locking and unlocking commands.

• Rear electronic module (REM), for status information on certain lock motors.

Input signals

Output signals

• 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.

• Rear electronic module (REM), for locking and unlocking commands.

• Rear electronic module (REM), for status information on certain lock motors.

Input signals

Output signals

• 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).

Input signals

Output signals

• 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).

Input signals

Output signals

• Signal from remote control.

• Rear electronic module (REM), with the request for activation of a function.
• Central electronic module (CEM), Comfort functions.

Input signals

Output signals

• Light switch module (LSM) (3/111), signal from switch for opening fuel tank filler cover.