Wiring Diagram Cluster

1991 Audi 90 Quattro 20V 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

90 Quattro 20V L5-2309cc 2.3L DOHC (7A)

Total Vehicle Diagrams

1113

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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.

1991 Audi 90 Quattro 20V ABS/Differential Lock Display - Continuously On β†’

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 β†’

Top ABS Diagram Paths

1.Antilock Brakes / Traction Control Systems β€” Diagnostic Aids > Basic ElectricityBrakes and Traction ControlOpen2.Antilock Brakes / Traction Control Systems β€” Diagnostic Aids > Checking For Short Circuit to GroundBrakes and Traction ControlOpen3.Antilock Brakes / Traction Control Systems β€” Diagnostic Aids > Checking For VoltageBrakes and Traction ControlOpen4.Antilock Brakes / Traction Control Systems β€” Diagnostic Aids > Checking Ground ConnectionsBrakes and Traction ControlOpen5.Antilock Brakes / Traction Control Systems β€” Diagnostic Aids > Checking Wiring and ComponentsBrakes and Traction ControlOpen6.Antilock Brakes / Traction Control Systems β€” Diagnostic Aids > Trouble Shooting ProcedureBrakes and Traction ControlOpen7.Antilock Brakes / Traction Control Systems β€” Diagnostic Aids > Working on the Electrical SystemBrakes and Traction ControlOpen8.Antilock Brakes / Traction Control Systems β€” Diagram Information and Instructions > Connector IndexBrakes and Traction ControlOpen9.Antilock Brakes / Traction Control Systems β€” Diagram Information and Instructions > General Information > Circuit SectionsBrakes and Traction ControlOpen10.Antilock Brakes / Traction Control Systems β€” Diagram Information and Instructions > General Information > Handling Components and ConnectorsBrakes and Traction ControlOpen11.Antilock Brakes / Traction Control Systems β€” Diagram Information and Instructions > Ground ConnectionsBrakes and Traction ControlOpen12.Antilock Brakes / Traction Control Systems β€” Diagram Information and Instructions > How to Read Displayed Page of Wiring Diagram, Important Stuff!Brakes and Traction ControlOpen13.Antilock Brakes / Traction Control Systems β€” Diagram Information and Instructions > Positive (+) ConnectionsBrakes and Traction ControlOpen14.Antilock Brakes / Traction Control Systems β€” Diagram Information and Instructions > Symbols Used in Wiring DiagramsBrakes and Traction ControlOpen15.Antilock Brakes / Traction Control Systems β€” Diagram Information and Instructions > Understanding Track Style Wiring Diagrams, Important Stuff!Brakes and Traction ControlOpen16.Antilock Brakes / Traction Control Systems β€” Diagram Information and Instructions > Wire Color Code IdentificationBrakes and Traction ControlOpen17.Antilock Brakes / Traction Control Systems β€” Diagram Information and Instructions > Wire Size ConversionBrakes and Traction ControlOpen18.Antilock Brakes / Traction Control Systems β€” Diagram Information and Instructions > Wiring Diagram Circuit IdentificationBrakes and Traction ControlOpen19.Antilock Brakes / Traction Control Systems β€” Electrical DiagramsBrakes and Traction ControlOpen20.Electrical Diagrams > Brakes and Traction Control > Antilock Brakes / Traction Control Systems > ABS Main RelayGeneralOpen21.Electrical Diagrams > Brakes and Traction Control > Antilock Brakes / Traction Control Systems > Wheel Speed SensorGeneralOpen22.Electrical Diagrams > Brakes and Traction Control > Antilock Brakes / Traction Control Systems > Electronic Brake Control ModuleGeneralOpen23.Electrical Diagrams > Brakes and Traction Control > Antilock Brakes / Traction Control Systems > Hydraulic Control Assembly - Antilock BrakesGeneralOpen24.Electrical Diagrams > Brakes and Traction Control > Antilock Brakes / Traction Control Systems > Lateral AccelerometerGeneralOpen25.Electrical Diagrams > Brakes and Traction Control > Antilock Brakes / Traction Control Systems > System DiagramGeneralOpen26.Electrical Diagrams > Brakes and Traction Control > System DiagramGeneralOpen27.Diagnostic Aids > Basic ElectricityBrakes and Traction ControlOpen28.Diagnostic Aids > Checking For Short Circuit to GroundBrakes and Traction ControlOpen29.Diagnostic Aids > Checking For VoltageBrakes and Traction ControlOpen30.Diagnostic Aids > Checking Ground ConnectionsBrakes and Traction ControlOpen31.Diagnostic Aids > Checking Wiring and ComponentsBrakes and Traction ControlOpen32.Diagnostic Aids > Trouble Shooting ProcedureBrakes and Traction ControlOpen33.Diagnostic Aids > Working on the Electrical SystemBrakes and Traction ControlOpen34.Diagram Information and Instructions > Connector IndexBrakes and Traction ControlOpen35.Diagram Information and Instructions > General Information > Circuit SectionsBrakes and Traction ControlOpen36.Diagram Information and Instructions > General Information > Handling Components and ConnectorsBrakes and Traction ControlOpen37.Diagram Information and Instructions > Ground ConnectionsBrakes and Traction ControlOpen38.Diagram Information and Instructions > How to Read Displayed Page of Wiring Diagram, Important Stuff!Brakes and Traction ControlOpen39.Diagram Information and Instructions > Positive (+) ConnectionsBrakes and Traction ControlOpen40.Diagram Information and Instructions > Symbols Used in Wiring DiagramsBrakes and Traction ControlOpen41.Diagram Information and Instructions > Understanding Track Style Wiring Diagrams, Important Stuff!Brakes and Traction ControlOpen42.Diagram Information and Instructions > Wire Color Code IdentificationBrakes and Traction ControlOpen43.Diagram Information and Instructions > Wire Size ConversionBrakes and Traction ControlOpen44.Diagram Information and Instructions > Wiring Diagram Circuit IdentificationBrakes and Traction ControlOpen45.Electrical DiagramsBrakes and Traction ControlOpen46.Connector Views > Brake LampGeneralOpen47.Electrical Diagrams > Auto-Check System > Brake and Hydraulic System SensorsInstrument Panel, Gauges and Warning IndicatorsOpen48.Electrical Diagrams > Instrument Panel, Gauges and Warning Indicators > System Diagram > Auto-Check System > Brake and Hydraulic System SensorsGeneralOpen

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