Alarm (2001-2004): Signals

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2007 Volvo V70, 2006 Volvo V70, 2005 Volvo V70, 2004 Volvo V70, and 2003 Volvo V70. However, it is still accessible from the selected car via links, so may be relevant.

The chart below summarizes the input signals to and output signals from the different control modules for the alarm function. The signal types are divided into directly connected signals, serial communication and control area network (CAN) communication.

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.