Wiring Diagram Cluster
1991 BMW 850i ABS Brake Wiring Diagram
Find ABS module wiring, wheel speed sensor circuits, brake pressure sensor paths, and traction control schematics.
Matched Diagrams
48
Variant Used
850i (E31) V12-4988cc 5.0L SOHC (M70)
Total Vehicle Diagrams
1407
🤖 Stuck on this electrical issue?
Wiring diagrams can be a maze. Ask Manuel, our factory-trained AI mechanic, to analyze this circuit or troubleshoot your specific symptom.
From Diagram To Fix
Use this wiring page as the jump point, not the dead end
Open the exact diagram, then move directly into the vehicle hub, the repair most likely tied to this system, or the code cluster that usually shows up with it.
Keep context
Vehicle Repair Hub
Step out of raw diagrams and into the full 1991 BMW 850i hub with repairs, specs, codes, and other systems already tied to this car.
View vehicle repair hub →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.
1991 BMW 850i 1991 Model Alpine And Pioneer Anti-Theft Radios And Cd Changers (65 05 90 (3132)) →Diagnostic signal
Codes Often Seen With This System
Use the code cluster when wiring faults overlap with check-engine or module-level diagnostics.
C0035: Left Front Wheel Speed Sensor Circuit →Top ABS Diagram Paths
1.Antilock Brakes / Traction Control Systems — Electrical Diagrams > Anti-Lock Brakes (ABS)Brakes and Traction ControlOpen2.Antilock Brakes / Traction Control Systems — Electrical Diagrams > Pin Assignments > Automatic Stability Control (ASC) > Pin Assignments at Conn.. X 11 (ABS/ASC Unit Connector)Brakes and Traction ControlOpen3.Antilock Brakes / Traction Control Systems — Electrical Diagrams > Pin Assignments > Automatic Stability Control (ASC) > Pin Assignments at Conn.. X 31 (ABS Hydraulic Unit Connector)Brakes and Traction ControlOpen4.Antilock Brakes / Traction Control Systems — Electrical Diagrams > Pin Assignments > Automatic Stability Control Plus Traction (ASC+T) > Pin Assignments at Conn.. X 11 (ABS/ASC+T Unit Connector)Brakes and Traction ControlOpen5.Antilock Brakes / Traction Control Systems — Electrical Diagrams > Pin Assignments > Automatic Stability Control Plus Traction (ASC+T) > Pin Assignments at Conn.. X 31 (ABS Hydraulic Unit Connector)Brakes and Traction ControlOpen6.Antilock Brakes / Traction Control Systems — Electrical Diagrams > Pin Assignments > Automatic Stability Control (ASC) > AdaptersBrakes and Traction ControlOpen7.Antilock Brakes / Traction Control Systems — Electrical Diagrams > Pin Assignments > Automatic Stability Control (ASC) > ConnectorBrakes and Traction ControlOpen8.Antilock Brakes / Traction Control Systems — Electrical Diagrams > Pin Assignments > Automatic Stability Control Plus Traction (ASC+T) > AdaptersBrakes and Traction ControlOpen9.Antilock Brakes / Traction Control Systems — Electrical Diagrams > Pin Assignments > Automatic Stability Control Plus Traction (ASC+T) > ConnectorBrakes and Traction ControlOpen10.Antilock Brakes / Traction Control Systems — Electrical Diagrams > Pin Assignments > Automatic Stability Control Plus Traction (ASC+T) > Pin Assignments at Conn.. X 18024 (Plug Conn.. Plunger ASC+T)Brakes and Traction ControlOpen11.Antilock Brakes / Traction Control Systems — Electrical Diagrams > Pin Assignments > Automatic Stability Control Plus Traction (ASC+T) > Pin Assignments at Conn.. X 18025 (Plug Conn.. Pressure Sensor)Brakes and Traction ControlOpen12.Electrical Diagrams > Antilock Brakes / Traction Control Systems > Anti-Lock Brakes (ABS)GeneralOpen13.Electrical Diagrams > Antilock Brakes / Traction Control Systems > Pin Assignments > Automatic Stability Control (ASC) > Pin Assignments at Conn.. X 11 (ABS/ASC Unit Connector)GeneralOpen14.Electrical Diagrams > Antilock Brakes / Traction Control Systems > Pin Assignments > Automatic Stability Control (ASC) > Pin Assignments at Conn.. X 31 (ABS Hydraulic Unit Connector)GeneralOpen15.Electrical Diagrams > Antilock Brakes / Traction Control Systems > Pin Assignments > Automatic Stability Control Plus Traction (ASC+T) > Pin Assignments at Conn.. X 11 (ABS/ASC+T Unit Connector)GeneralOpen16.Electrical Diagrams > Antilock Brakes / Traction Control Systems > Pin Assignments > Automatic Stability Control Plus Traction (ASC+T) > Pin Assignments at Conn.. X 31 (ABS Hydraulic Unit Connector)GeneralOpen17.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component ID (General List) > Part 1 ABrakes and Traction ControlOpen18.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component ID (General List) > Part 2 BBrakes and Traction ControlOpen19.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component ID (General List) > Part 3 C-GBrakes and Traction ControlOpen20.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component ID (General List) > Part 4 H-MBrakes and Traction ControlOpen21.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component ID (General List) > Part 5 N-ZBrakes and Traction ControlOpen22.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component, Connector, Splice, Fuse and Ground Locations > Component LocationsBrakes and Traction ControlOpen23.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component, Connector, Splice, Fuse and Ground Locations > Components ViewsBrakes and Traction ControlOpen24.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component, Connector, Splice, Fuse and Ground Locations > Connectors > Connector Locations > X1001 Thru X9403Brakes and Traction ControlOpen25.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component, Connector, Splice, Fuse and Ground Locations > Connectors > Connector Locations > X10039 Thru X18246Brakes and Traction ControlOpen26.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component, Connector, Splice, Fuse and Ground Locations > Connectors > Connector Locations > X252 Thru X424Brakes and Traction ControlOpen27.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component, Connector, Splice, Fuse and Ground Locations > Connectors > Connector Locations > X501 Thru X695Brakes and Traction ControlOpen28.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component, Connector, Splice, Fuse and Ground Locations > Connectors > Connector Locations > X7 Thru X161Brakes and Traction ControlOpen29.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component, Connector, Splice, Fuse and Ground Locations > Connectors > Connector Locations > X701 Thru X980Brakes and Traction ControlOpen30.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component, Connector, Splice, Fuse and Ground Locations > Connectors > Data Link Connector (Diagnostic Connector)Brakes and Traction ControlOpen31.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component, Connector, Splice, Fuse and Ground Locations > Fuse and Fusible Links > Front (LH Rear of Engine Compartment)Brakes and Traction ControlOpen32.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component, Connector, Splice, Fuse and Ground Locations > Fuse and Fusible Links > Rear (LH Side of Luggage Compartment)Brakes and Traction ControlOpen33.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component, Connector, Splice, Fuse and Ground Locations > GroundsBrakes and Traction ControlOpen34.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component, Connector, Splice, Fuse and Ground Locations > Splices > LocationsBrakes and Traction ControlOpen35.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component, Connector, Splice, Fuse and Ground Locations > Splices > Views > Chassis HarnessBrakes and Traction ControlOpen36.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component, Connector, Splice, Fuse and Ground Locations > Splices > Views > Front HarnessBrakes and Traction ControlOpen37.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Component, Connector, Splice, Fuse and Ground Locations > Splices > Views > Rear HarnessBrakes and Traction ControlOpen38.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Symbol Identification and Diagram InformationBrakes and Traction ControlOpen39.Antilock Brakes / Traction Control Systems — Diagram Information and Instructions > Wire Color Code IdentificationBrakes and Traction ControlOpen40.Antilock Brakes / Traction Control Systems — Electrical Diagrams > Electrical DiagramsBrakes and Traction ControlOpen41.Electrical Diagrams > Antilock Brakes / Traction Control Systems > Pin Assignments > Automatic Stability Control (ASC) > AdaptersGeneralOpen42.Electrical Diagrams > Antilock Brakes / Traction Control Systems > Pin Assignments > Automatic Stability Control (ASC) > ConnectorGeneralOpen43.Electrical Diagrams > Antilock Brakes / Traction Control Systems > Pin Assignments > Automatic Stability Control Plus Traction (ASC+T) > AdaptersGeneralOpen44.Electrical Diagrams > Antilock Brakes / Traction Control Systems > Pin Assignments > Automatic Stability Control Plus Traction (ASC+T) > ConnectorGeneralOpen45.Electrical Diagrams > Antilock Brakes / Traction Control Systems > Pin Assignments > Automatic Stability Control Plus Traction (ASC+T) > Pin Assignments at Conn.. X 18024 (Plug Conn.. Plunger ASC+T)GeneralOpen46.Electrical Diagrams > Antilock Brakes / Traction Control Systems > Pin Assignments > Automatic Stability Control Plus Traction (ASC+T) > Pin Assignments at Conn.. X 18025 (Plug Conn.. Pressure Sensor)GeneralOpen47.Electrical Diagrams > Instrument Panel, Gauges and Warning Indicators > System Diagram > Warning Indicators > Anti-Lock Brakes (ABS)GeneralOpen48.Electrical Diagrams > Warning Indicators > Anti-Lock Brakes (ABS)Instrument Panel, Gauges and Warning IndicatorsOpen
Parts & Tools for This Job
Common parts shoppers buy for 1991 BMW 850i ABS.
As an Amazon Associate, AllOEMManuals earns from qualifying purchases. Prices and availability may vary.
OEM Manual Evidence
Browse →1991 BMW 850i 1991 Model Alpine And Pioneer Anti-Theft Radios And Cd Changers (65 05 90 (3132))OEM Manual
1991 Model Alpine And Pioneer Anti-Theft Radios And Cd Changers (65 05 90 (3132)) — 1991 BMW 850i Automatic Service Manual ~ LEMON Manuals...
1991 BMW 850i 1991 Model Alpine And Pioneer Anti-Theft Radios And Cd Changers (65 05 90 (3132))OEM Manual
1991 Model Alpine And Pioneer Anti-Theft Radios And Cd Changers (65 05 90 (3132)) — 1991 BMW 850i Standard Service Manual ~ LEMON Manuals L...
1991 BMW 850i 50-Amp Clamp For Gt1 (04 16 04)OEM Manual
50-Amp Clamp For Gt1 (04 16 04) — 1991 BMW 850i Automatic Service Manual ~ LEMON Manuals LEMON Manuals: Repair Knowledge Reimagined Home >>...
1991 BMW 850i 50-Amp Clamp For Gt1 (04 16 04)OEM Manual
50-Amp Clamp For Gt1 (04 16 04) — 1991 BMW 850i Standard Service Manual ~ LEMON Manuals LEMON Manuals: Repair Knowledge Reimagined Home >>...
Exact Vehicle Hub
Browse →Likely Trouble Codes for This System
Browse →C0035: Left Front Wheel Speed Sensor CircuitCode
Chassis/Brakes code commonly seen during abs diagnosis.
C0040: Right Front Wheel Speed Sensor CircuitCode
Chassis/Brakes code commonly seen during abs diagnosis.
C0050: Right Rear Wheel Speed Sensor CircuitCode
Chassis/Brakes code commonly seen during abs diagnosis.
C0236: Rear Wheel Speed Sensor Signal ErraticCode
Chassis/Brakes code commonly seen during abs diagnosis.
P0500: Vehicle Speed Sensor ACode
Transmission code commonly seen during abs diagnosis.
P0106: MAP/BARO Sensor Circuit Range/PerformanceCode
Fuel code commonly seen during abs diagnosis.
More 850i Wiring Pages
Starter Wiring DiagramAlternator Wiring DiagramHeadlight Wiring DiagramA/C & Heater Wiring DiagramPower Window Wiring DiagramInstrument Cluster Wiring DiagramWiper & Washer Wiring DiagramTransmission Wiring DiagramAirbag SRS Wiring DiagramEngine Management Wiring DiagramBody Electrical Wiring Diagram
Same System, Other Vehicles
1991 Toyota Supra ABS Wiring Diagram1994 Toyota Celica ABS Wiring Diagram1995 Toyota Celica Liftback ABS Wiring Diagram1990 Honda Prelude ABS Wiring Diagram1993 Honda Accord ABS Wiring Diagram1997 Toyota Supra Liftback ABS Wiring Diagram1991 Ford Thunderbird ABS Wiring Diagram1992 Ford Crown Victoria ABS Wiring Diagram
Factory Service Tools
Turn This Into a Confident Next Step
Verify the likely fault first, then compare a quote before you approve expensive work.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.