Wiring Diagram Cluster

2001 BMW 320i Body Electrical Wiring Diagram

Find body control module wiring, door lock circuits, interior lighting paths, and horn/alarm schematics.

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Matched Diagrams

48

Variant Used

320i (E46) (CANADA) L6-2.2L M54

Total Vehicle Diagrams

6103

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OEM source

Factory Manual Evidence

When there is no clean repair shortcut for this system, drop into the OEM manual sections that usually carry the authoritative test path.

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Diagnostic signal

Codes Often Seen With This System

Use the code cluster when wiring faults overlap with check-engine or module-level diagnostics.

B1318: Battery Voltage Low →
U0140: Lost Communication with Body Control Module

Top Body Electrical Diagram Paths

1.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Trunk Compartment Light > Luggage Compartment Lights (Compact or Touring)GeneralOpen2.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Trunk Compartment Light > Luggage Compartment Lights (Coupe or Convertible As of 03/03)GeneralOpen3.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Trunk Compartment Light > Luggage Compartment Lights (Saloon As of 09/01)GeneralOpen4.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Trunk Compartment Light > Luggage Compartment Lights (Saloon Up to 09/01)GeneralOpen5.Electrical Diagrams > Body > Lighting > Interior Lights > Switch > Trunk Lid Contact > Trunk Lid Release (Compact)GeneralOpen6.Electrical Diagrams > Body > Lighting > Interior Lights > Switch > Trunk Lid Contact > Trunk Lid Release (Convertible)GeneralOpen7.Electrical Diagrams > Body > Lighting > Interior Lights > Switch > Trunk Lid Contact > Trunk Lid Release (Saloon or Coupe)GeneralOpen8.Electrical Diagrams > Body > Lighting > Interior Lights > Switch > Trunk Lid Contact > Trunk Lid Release (Touring)GeneralOpen9.Electrical Diagrams > Body > Locking and Security Functions > Antitheft Alarm System > Switch, Tailgate > Trunk Lid Release (Compact)GeneralOpen10.Electrical Diagrams > Body > Locking and Security Functions > Antitheft Alarm System > Switch, Tailgate > Trunk Lid Release (Convertible)GeneralOpen11.Electrical Diagrams > Body > Locking and Security Functions > Antitheft Alarm System > Switch, Tailgate > Trunk Lid Release (Saloon or Coupe)GeneralOpen12.Electrical Diagrams > Body > Locking and Security Functions > Antitheft Alarm System > Switch, Tailgate > Trunk Lid Release (Touring)GeneralOpen13.Electrical Diagrams > Body > Locking and Security Functions > Central Locking System > Driver's Door Lock MotorGeneralOpen14.Electrical Diagrams > Body > Locking and Security Functions > Central Locking System > Passenger's Door Lock MotorGeneralOpen15.Electrical Diagrams > Body > Locking and Security Functions > Central Locking System > Rear Driver's Side Door Lock Motor (Saloon or Touring)GeneralOpen16.Electrical Diagrams > Body > Locking and Security Functions > Central Locking System > Rear Passenger's Side Door Lock Motor (Saloon or Touring)GeneralOpen17.Electrical Diagrams > Body > Locking and Security Functions > Rear Lid/Rear Window > Drive, Tailgate > Trunk Lid Release (Compact)GeneralOpen18.Electrical Diagrams > Body > Locking and Security Functions > Rear Lid/Rear Window > Drive, Tailgate > Trunk Lid Release (Convertible)GeneralOpen19.Electrical Diagrams > Body > Locking and Security Functions > Rear Lid/Rear Window > Drive, Tailgate > Trunk Lid Release (Saloon or Coupe)GeneralOpen20.Electrical Diagrams > Body > Locking and Security Functions > Rear Lid/Rear Window > Drive, Tailgate > Trunk Lid Release (Touring)GeneralOpen21.Electrical Diagrams > Body > Locking and Security Functions > Rear Lid/Rear Window > Switch, Tailgate (Without Compact) > Trunk Lid Release (Convertible)GeneralOpen22.Electrical Diagrams > Body > Locking and Security Functions > Rear Lid/Rear Window > Switch, Tailgate (Without Compact) > Trunk Lid Release (Saloon or Coupe)GeneralOpen23.Electrical Diagrams > Body > Locking and Security Functions > Rear Lid/Rear Window > Switch, Tailgate (Without Compact) > Trunk Lid Release (Touring)GeneralOpen24.Connector Views > Power Door Lock Switch > S18 Hazard Warning/Central Locking SwitchGeneralOpen25.Electrical Diagrams > Body > Lighting > Interior Lights > Interior Lights/Vehicle Interior (Convertible)GeneralOpen26.Electrical Diagrams > Body > Lighting > Interior Lights > Interior Lights/Vehicle Interior (As of 03/99 With (Saloon or Coupe or Compact)GeneralOpen27.Electrical Diagrams > Body > Lighting > Interior Lights > Interior Lights/Vehicle Interior (Convertible)GeneralOpen28.Electrical Diagrams > Body > Lighting > Interior Lights > Interior Lights/Vehicle Interior (Touring)GeneralOpen29.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Dimmer > Connector, Instrument and Locator Lighting X1019 (As of 03/03)GeneralOpen30.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Dimmer > Connector, Instrument and Locator Lighting X1019 (As of 09/99 Up to 03/03)GeneralOpen31.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Footwell LightsGeneralOpen32.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Glove Box LightGeneralOpen33.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Interior Light, Hard Top (Convertible) > Rear Left Interior Light (Convertible)GeneralOpen34.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Interior Light, Hard Top (Convertible) > Rear Right Interior Light (Convertible)GeneralOpen35.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Interior Lights, FrontGeneralOpen36.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Light, Cigarette Lighter > Front Cigar Lighter (Touring)GeneralOpen37.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Light, Cigarette Lighter > Front Cigar Lighter (Without Touring)GeneralOpen38.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Load CutoutGeneralOpen39.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Mirror Light, Driver's SideGeneralOpen40.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Mirror Light, Passenger's SideGeneralOpen41.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Oddments Compartment Lighting > Oddments Tray Package (As of 09/00)GeneralOpen42.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Oddments Compartment Lighting > Oddments Tray Package (Without Compact Up to 09/00)GeneralOpen43.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Reading LightsGeneralOpen44.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Rear Ashtray LightGeneralOpen45.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Rear Left Interior Light > Interior Lights, Rear (As of 06/00 With Touring)GeneralOpen46.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Rear Left Interior Light > Interior Lights, Rear (Compact)GeneralOpen47.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Rear Left Interior Light > Interior Lights, Rear (Touring)GeneralOpen48.Electrical Diagrams > Body > Lighting > Interior Lights > Lamps > Rear Left Interior Light > Rear Left Interior Light (Without Touring Without Convertible)GeneralOpen

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Likely Trouble Codes for This System

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B1318: Battery Voltage LowCode

Body/Electrical code commonly seen during body electrical diagnosis.

U0140: Lost Communication with Body Control ModuleCode

Network/Communication code commonly seen during body electrical diagnosis.

More 320i Wiring Pages

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Same System, Other Vehicles

2001 BMW 325Ci Convertible Body Electrical Wiring Diagram2001 BMW 325Ci Coupe Body Electrical Wiring Diagram2001 BMW 325i Sedan Body Electrical Wiring Diagram2001 BMW 325i Sport Wagon Body Electrical Wiring Diagram2001 BMW 325xi Sedan AWD Body Electrical Wiring Diagram2001 BMW 325xi Sport Wagon AWD Body Electrical Wiring Diagram2001 BMW 330Ci Convertible Body Electrical Wiring Diagram2001 BMW 330Ci Coupe Body Electrical Wiring Diagram