Citroen C5 Aircross Quiz
Multiplexing

Engine servitude unit

In this manual: Multiplexing
AAS - Parking Aid — 8Owner's Manual Citroën C5 II — 139Citroen C5 Aircross (2017- 2024) - Owner's Manual — 143Audio system — 14Overspeed control — 7Multifunction display — 4Driver information instrument cluster — 20Navigation assistance — 8Intruder alarm — 7Mechanical specifications — 9Power supply — 8Electrical equipment — 13Lighting and electrical equipment — 3Immobiliser — 4Sunroof — 10Exterior lighting / signalling — 38Multiplexing — 7Air conditioning — 7Body — 6General specifications — 9Automatic gearbox control — 3Exterior mirrors — 10Airbags — 5Defrost — 6Underinflation — 6Interior lighting — 4Wipers / Washers — 6Window lifters — 11Cooling — 8Opening management — 7Cruise control — 5Suspension — 4Grip management — 1Paint — 2Exterior lighting control — 1Indicators (turn signals) — 1Automatic lighting systems - General recommendations — 1Wiper control — 1Special position of the front wipers — 1
~1min read

The Engine Support Box (BSM) controls the vehicle's power relays on command from the Intelligent Servicing Unit (BSI) via the VAN CAR 1 network. The BSM is located under the bonnet, on the left front wheel arch in the cold box.

The Engine Support Box (BSM) consists of two associated modules:

  • module 1: module incorporating the maxi fuses,
  • module 2: module incorporating an electronic board, the fuses and the relays.

Illustration:

Boîtier de Servitude moteur
Engine Support Box (BSM)

Key:

1: module 1

2: module 2

3: product identification label

Boîtier de servitude Moteur : Vue de dessus (module 2)
Engine Support Box (BSM): Top view (module 2)

Important: mechanical identification, different from the fuse designation.

Alimentation electrique

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