System Overview: Functions

C30/S40/V50

Fig 1: Identifying General System Overview

Courtesy of VOLVO CARS CORPORATION

C70

Fig 2: Identifying General System Overview

Courtesy of VOLVO CARS CORPORATION

NOTE:

This service information describes the central locking system in cars with a keyless vehicle module (KVM). Some components are different from the standard central locking system. This service information outlines the main functionality of the central locking system with keyless entry.

The central locking system contains a number of functions. The system is monitored by the central electronic module (CEM).

The central electronic module (CEM) communicates with the constituent units, whether directly connected or connected in series, via the CAN network.

The functions covered are:

standard locking function (total or 2 stage)
deadlocking
private locking mode
child-proof lock (only S40/V50)
unlocking the trunk lid/tailgate
unlocking the fuel tank filler cover
light functions (local lighting and approach lights)
indication of the status of the doors and hatches
remote unlocking
automatic locking function
re-locking
Passive functions
lockable storage compartment (option C70)
lock for ski hatch (C70).