4.12 Handles, locks, catches and access systems
4.12.1 Central locking system
Information
–
Additional locks are not covered by the vehicle’s car
alarm.
–
The central locking function is controlled by the BCM*
(*onboard supply control unit, under the dash panel).
The vehicle locks are powered by field effect
transistors (FETs) in the onboard supply control unit –
these are only capable of powering one lock each.
It is possible to add one or more additional locks using
relays that are actuated by the onboard supply control
unit outputs.
–
–
The location of additional relays should be carefully
considered. A suitable mounting location away from
the passenger compartment will allow for safer
installation and reduced noise in the vehicle interior.
Depending on the functionality required, the pins used
emulate the basic locking/unlocking operation of an
existing lock. The coil of the additional relays (i.e. one
relay for locking, one relay for unlocking all relays)
should be added via the appropriate pin and a suitable
earth point. The power (B+) for the additional relays
should be taken from an appropriately fused B+ feed.
The relays for installing one or more additional locks
must be selected in parallel to the duration of the
surface mounted onboard supply control unit relays.
–
–
Onboard supply control unit output for central locking system
Onboard supply control
unit connector
C3
Pin
Function
35
32
CTRL MOD. - DOOR LOCK # ALL LOCKED
CTRL MOD. - DOOR LOCK # UNLOCK ALL
C3
Volkswagen Commercial Vehicles – Body builder guidelines – February 2023 edition
The new Amarok – Page 121 of 166
English 
