BMW F30 Full Wiring Diagram. Electrical system

Complete wiring diagrams for the BMW 3 Series F30/F31 (2011–2019). An indispensable guide for diagnosing and troubleshooting complex electrical systems. Includes wiring diagrams for:

• Engine and ECU (N20, N47, N55, B-series).
• Safety systems (ABS, DSC, Airbag).
• Convenience electronics (iDrive, lighting, Comfort Access).

Contains precise component locations and grounding.

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Activating bus system control units

2 Nodal start-up control blocks for starting and

FlexRay bus system synchronization

ACSM Crash Safety Module

AHM Trailer Electrical Connection Module

AMPT Top HiFi Amplifier

COMBOX Combox communication station (emergency call Combox communication station,

multimedia communication stations Combox)

CON Controller

D-CAN Diagnostic CAN

DDE Digital Electronic Diesel Engine Management

DME Digital Engine Electronics

DSC Dynamic Stability Control

DVDC DVD changer

EGS Electronic Transmission Control

EKPS Fuel Pump Control System

EPS Electromechanical power steering

Ethernet Ethernet bus

FEM Front Electronic Module

FLA Headlight High Beam

FlexRay Chassis Management Bus

FZD Roof Functional Center

GWS Gear Shift

HEADUNIT Head Unit (Car Information Computer or Head Unit

Basis)

ICM Integrated Chassis Management

IHKA Integrated automatic heating and air conditioning

K-CAN Body CAN

K-CAN2 Body CAN 2

KAFAS Camcorder Driving Assistance Systems

KOMBI Instrument cluster (MOST bus only with SA 6WA)

MOST Data bus between ICT systems

OBD On-Board Diagnostic System (Diagnostic Connector)

PDC Parking Approach Alarm (with SA 5DP Parking

Assistant - built into the control unit of the parking assistant; in other

cases - to the REM module)

PMA Parking Assistant

FlexRay F30 System Diagram

Designation Explanation

1 Dynamic Stability Control (DSC)

2 Digital Engine Electronics (DME) or

Digital Electronic Diesel Engine Management (DDE)

3 Electromechanical power steering (EPS)

4 Front Electronic Module (FEM)

5 Vertical Dynamics Management (VDM)

6 Hazard warning control unit

rebuilding (SWW)

7 Integrated Chassis Management (ICM)

Designation Explanation

1 Power Distribution Module (PDM) (only for vehicles with

gasoline engine)

2 Generator

3 Digital Engine Electronics (DME) or

Digital Electronic Diesel Engine Management (DDE)

4 Starter

5 electric fan

6 electric fan relay

7 Output (B +) for connecting an external power source

8 Front power distribution box

9 Power distribution box in the engine compartment

10 Front Electronic Module (FEM)

11 Rear Electronic Module (REM)

12 Power distribution box in the luggage compartment

13 Emergency Stop (SBK) terminal

14 Battery

15 Intelligent Battery Sensor (IBS)

16 Battery distribution box

17 Crash Safety Module (ACSM)

Kl. 30 Standing Plus

Kl. 30B Contact 30B

Kl. 15N Pin 15N

Kl. 30F Contact 30F

Designation Explanation

A Front Power Components

B Rear power components

1 Main battery wires

2 Front power distribution box

3 Power distribution box in the engine compartment

4 Output (B +) for connecting an external power source

5 Starter

6 Generator

7 Power Distribution Module (PDM)

8 Emergency Stop (SBK) terminal

9 Battery distribution box

10 Power distribution box in the luggage compartment

11 Intelligent Battery Sensor (IBS)

12 Battery

Designation Explanation

1 Front Electronic Module (FEM)

2 Front passenger door contact

3 Front passenger door door handle electronics (TAGE)

4 Antenna comfort access system on the right threshold

5 Antenna comfort access system in the rear bumper

6 Antenna for comfort access system in the luggage compartment

7 Rear access aerial

8 Antenna comfort access system in the left threshold

9 Driver Side Door Handle Electronic Assembly (TAGE)

10 Driver door contact

11 Antenna for comfort access system in front of the passenger compartment

Kl. 30F Contact 30F

The electronic components for the TAGE exterior door handles are also read by the FEM.

1 Front Electronic Module (FEM)

2 Front passenger door contact

3 Front passenger door door handle electronics (TAGE)

4 Antenna comfort access system on the right threshold

5 Rear access aerial

6 Antenna for comfort access system in the luggage compartment

7 Antenna comfort access system in the rear bumper

8 Front access aerial

9 Antenna comfort access system in the left threshold

10 Electronic driver's door handle electronic assembly (TAGE)

11 Driver door contact

Designation Explanation

1 Key for unlocking the boot lid (in some versions

set as standard)

2 Instrument cluster (KOMBI)

3 central locking button / emergency light switch

alarm

4 “Hotel” position switch (US version only)

5 bonnet contact

6 Front Electronic Module (FEM)

7 Door contact, central lock, right front door

8 Door contact, central locking of the right rear door

9 Central locking fuel filler flap

10 Rear Electronic Module (REM)

11 Power distribution box in the luggage compartment

12 Contact switch for boot lid with boot lid lock

13 Lantern in the boot lid (only with lighting package

equipment, SA 563)

14 Lantern in the boot lid (only without lighting package

equipment, SA 563)

15 Lantern in the boot lid (only with lighting package

equipment, SA 563)

16 Button on the trunk lid outside

17 Luggage compartment light (basic: lamp

Incandescent. With SA 563: LED)

18 Remote control receiver

19 Door contact, central locking left rear door

20 Door contact, central locking of the left front door

Kl. 30B Contact 30B

Designation Explanation

1 Power distribution box in the engine compartment

2 Front Electronic Module (FEM)

3 Power window front passenger door with

indirect injury protection function

4 power window switch, front passenger door

5 Power window right rear door with indirect

injury protection function

6 Power window switch, right rear door

7 Rear Electronic Module (REM)

8 Remote control receiver

9 Power window switch left rear door

10 Power window left rear door with indirect

injury protection function

11 Switch block in the driver's door

12 Power window driver door with indirect

injury protection function

Kl. 30B Contact 30B