90 Quattro 20V L5-2309cc 2.3L DOHC (7A) (1990): Sensors and Switches

Also for this vehicle: 90 L5-2309cc 2.3L SOHC (NG) (1988), 90 Quattro 20V (Canada) L5-2309cc 2.3L DOHC (7A) (1989), 90 Quattro Sport V6-2.8L (AFC) (1995), 90CS Quattro V6-2.8L (AAH) (1994), 90CS Quattro V6-2.8L (AFC) (1995), 90S Quattro (Canada) V6-2.8L (AAH) (1993), 90S Quattro (Canada) V6-2.8L (AFC) (1995), 90S, CS V6-2.8L (AAH) (1994), 90S, CS V6-2.8L (AFC) (1995).

Diagnostics Maintenance Engine Transmission Brakes Electrical Steering & suspension Heating & A/C Body & interior

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01Relays and Modules Relays and Modules: Sections
02Sensors and Switches Sensors and Switches: Sections
- Sensors and Switches - Body and Frame48 pages
  - Power Door Lock Switch › Component Information › Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
  - Power Mirror Switch › Component Information › Technical Service Bulletins3 pages
    Customer Interest: › 669104
    All Technical Service Bulletins: › 669104
    All Other Service Bulletins for Power Mirror Switch: › 9688T03
    All Other Service Bulletins for Power Mirror Switch: › 9688T03
  - Power Seat Switch › Component Information › Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
  - Sunroof / Moonroof Switch › Component Information › Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
- Sensors and Switches - Brakes and Traction Control44 pages
  - Brake Fluid Level Sensor/Switch › Component Information › Locations
  - Differential Lock Switch › Component Information › Technical Service Bulletins2 pages
    Customer Interest for Differential Lock Switch: › 459102
    All Technical Service Bulletins for Differential Lock Switch: › 459102
  - Lateral Accelerometer › Component Information › Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
  - Parking Brake Warning Switch › Component Information › Locations
  - Wheel Speed Sensor › Component Information25 pages
    Technical Service Bulletins8 pages
    Customer Interest: › 459104
    All Technical Service Bulletins for Wheel Speed Sensor: › 4591012 3 4
    All Other Service Bulletins for Wheel Speed Sensor: › 4591012 3
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
    Service and Repair › Front Wheel Speed Sensors2
- Sensors and Switches - Cooling System60 pages
  - Coolant Level Sensor › Component Information16 pages
    Locations
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
  - Engine - Coolant Temperature Sensor/Switch44 pages
    Coolant Temperature Sensor / Switch HVAC › Component Information › Specifications2 3 4
    Coolant Temperature Sensor/Switch (For Computer) › Component Information19 pages
    Specifications › Models Produced Up to March 19902
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
    Testing and Inspection › Models Produced From March 19902
    Radiator Cooling Fan Temperature Sensor / Switch › Component Information20 pages
    Specifications3 pages
    Mechanical Specifications
    Pressure, Vacuum and Temperature Specifications › Thermoswitch Cutoff Temperature2
    Locations › Cooling Fan Thermoswitch2
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
    Temperature Sensor (Gauge) › Component Information › Locations
- Sensors and Switches - Cruise Control › Cruise Control Switch › Component Information › Diagrams15 pages
  - Diagram Information and Instructions › General Information › Circuit Sections2 3
  - Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
- Sensors and Switches - Engine5 pages
  - Oil Pressure Sender › Component Information4 pages
    Technical Service Bulletins › Dynamic Oil Pressure System - Troubleshooting Tips2
    Locations › Oil Pressure Sensor2
  - Oil Temperature Sensor/Switch, Engine › Component Information › Locations
- Sensors and Switches - HVAC41 pages
  - Ambient Temperature Sensor / Switch HVAC › Component Information › Specifications2 3 4 5 6 7
  - Cabin Temperature Sensor / Switch › Component Information6 pages
    Specifications
    Locations › Inside Temperature Sensor 12 3
    Service and Repair › Instrument Panel Mounted › Temperature Sensor2
  - Coolant Temperature Sensor / Switch HVAC › Component Information › Specifications2 3 4
  - Refrigerant Pressure Sensor / Switch, HVAC18 pages
    High Pressure Sensor / Switch, HVAC › Component Information11 pages
    Specifications › Mechanical Specifications › A/C Refrigerant High Pressure Safety SW (For Compressor Clutch)2 3
    Locations › A/C High Pressure Switch2 3 4 5 6
    Description and Operation › A/C Refrigerant High Pressure Switch (-F23-)2
    A/C Low Pressure Switch <--> [Low Pressure Sensor / Switch, HVAC] › Component Information7 pages
    Specifications › Mechanical Specifications2
    Testing and Inspection › Component Test Method2 3 4 5
  - Throttle Full Open Switch HVAC › Component Information › Testing and Inspection › With 3 Speed Automatic Transmission2 3 4 5 6
- Sensors and Switches - Instrument Panel25 pages
  - Door Switch › Component Information › Technical Service Bulletins4 pages
    Customer Interest for Door Switch: › 9688T022
    All Technical Service Bulletins for Door Switch: › 9688T022
  - Fuel Gauge Sender › Component Information20 pages
    Technical Service Bulletins5 pages
    Customer Interest: › 209004
    All Technical Service Bulletins: › 209004
    All Other Service Bulletins for Fuel Gauge Sender: › 1993032 3
    All Other Service Bulletins for Fuel Gauge Sender: › 199303
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
  - Parking Brake Warning Switch › Component Information › Locations
- Sensors and Switches - Lighting and Horns13 pages
  - Backup Lamp Switch › Component Information › Locations › Gear Selector/Back-Up Light Switch (3-Speed Automatic Trans.)2
  - Brake Light Switch › Component Information › Technical Service Bulletins2 pages
    Customer Interest for Brake Light Switch: › 9489T02
    All Technical Service Bulletins for Brake Light Switch: › 9489T02
  - Door Switch › Component Information › Technical Service Bulletins5 pages
    Customer Interest: › 9688T022
    All Technical Service Bulletins: › 9688T022
    All Other Service Bulletins for Door Switch: › 159005
    All Other Service Bulletins for Door Switch: › 159005
  - Trunk Lamp Switch › Component Information › Technical Service Bulletins2 pages
    Customer Interest for Trunk Lamp Switch: › 9688T03
    All Technical Service Bulletins for Trunk Lamp Switch: › 9688T03
  - Turn Signal Switch › Component Information › Technical Service Bulletins2 pages
    Customer Interest for Turn Signal Switch: › 949101
    All Technical Service Bulletins for Turn Signal Switch: › 949101
- Sensors and Switches - Powertrain Management351 pages
  - Sensors and Switches - Computers and Control Systems193 pages
    Air Flow Meter/Sensor › Component Information23 pages
    Technical Service Bulletins › CO Adjustment Potentiometer - Tamperproof Plug R&R
    Specifications › Airflow Sensor Specifications2 3
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
    Testing and Inspection › Models Produced Up to March 19902 3 4
    Coolant Temperature Sensor/Switch (For Computer) › Component Information19 pages
    Specifications › Models Produced Up to March 19902
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
    Testing and Inspection › Models Produced From March 19902
    Crankshaft Position Sensor › Component Information20 pages
    Specifications › Models Produced Up to March 19902
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
    Testing and Inspection › Models Produced After March 19902 3
    Engine Speed Sensor › Component Information19 pages
    Specifications › Models Produced Up to March 19902
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
    Testing and Inspection › Models Produced From March 19902
    Ignition Hall Effect Sensor › Component Information7 pages
    Description and Operation2 3
    Testing and Inspection › Models Produced From March 19902 3 4
    Knock Sensor › Component Information23 pages
    Technical Service Bulletins6 pages
    Customer Interest for Knock Sensor: › 2890032 3
    All Technical Service Bulletins for Knock Sensor: › 2890032 3
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
    Testing and Inspection › Models Produced From March 19902
    Oxygen Sensor › Component Information21 pages
    Technical Service Bulletins › Oxygen Sensor - Contamination › Oxygen Sensor - Contamination2
    Specifications › Models Produced Up to March 19902
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
    Testing and Inspection › Models Produced From March 19902
    Throttle Full Close Switch › Component Information19 pages
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
    Testing and Inspection › Models Produced Up to March 19902 3 4
    Throttle Full Open Switch › Component Information19 pages
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
    Testing and Inspection › Models Produced Up to March 19902 3 4
    Throttle Position Sensor › Component Information21 pages
    Specifications › Models Produced Up to March 19902
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
    Testing and Inspection › Models Produced Up to March 19902 3 4
    Vehicle Speed Sensor › Component Information › Specifications2
  - Sensors and Switches - Emission Control Systems › EGR Temperature Sensor › Component Information › Locations2 3 4
  - Sensors and Switches - Fuel Delivery and Air Induction88 pages
    Air Flow Meter/Sensor › Component Information23 pages
    Technical Service Bulletins › CO Adjustment Potentiometer - Tamperproof Plug R&R
    Specifications › Airflow Sensor Specifications2 3
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
    Testing and Inspection › Models Produced Up to March 19902 3 4
    Throttle Full Close Switch › Component Information19 pages
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
    Testing and Inspection › Models Produced Up to March 19902 3 4
    Throttle Full Open Switch › Component Information19 pages
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
    Testing and Inspection › Models Produced Up to March 19902 3 4
    Throttle Full Open Switch HVAC › Component Information › Testing and Inspection › With 3 Speed Automatic Transmission2 3 4 5 6
    Throttle Position Sensor › Component Information21 pages
    Specifications › Models Produced Up to March 19902
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
    Testing and Inspection › Models Produced Up to March 19902 3 4
  - Sensors and Switches - Ignition System66 pages
    Crankshaft Position Sensor › Component Information20 pages
    Specifications › Models Produced Up to March 19902
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
    Testing and Inspection › Models Produced After March 19902 3
    Hall Effect Sensor, Ignition › Component Information › Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
    Ignition Hall Effect Sensor › Component Information7 pages
    Description and Operation2 3
    Testing and Inspection › Models Produced From March 19902 3 4
    Ignition Switch › Ignition Switch Lock Cylinder › Component Information › Service and Repair
    Knock Sensor › Component Information23 pages
    Technical Service Bulletins6 pages
    Customer Interest for Knock Sensor: › 2890032 3
    All Technical Service Bulletins for Knock Sensor: › 2890032 3
    Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
    Testing and Inspection › Models Produced From March 19902
- Sensors and Switches - Restraint Systems › Impact Sensor › Component Information › Technical Service Bulletins2 pages
  - Recalls for Impact Sensor: › NHTSA97V172000
  - All Technical Service Bulletins for Impact Sensor: › NHTSA97V172000
- Sensors and Switches - Starting and Charging › Ignition Switch › Ignition Switch Lock Cylinder › Component Information › Service and Repair
- Sensors and Switches - Transmission and Drivetrain › Sensors and Switches - A/T › Downshift Switch, A/T › Component Information › Locations2
- Sensors and Switches - Windows and Glass › Power Window Switch › Component Information16 pages
  - Locations
  - Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
- Sensors and Switches - Wiper and Washer Systems16 pages
  - Washer Fluid Level Switch › Component Information › Locations
  - Wiper Switch › Component Information › Diagrams15 pages
    Diagram Information and Instructions › General Information › Circuit Sections2 3
    Diagnostic Aids › Basic Electricity2 3 4 5 6 7 8 9 10 11 12
03Maintenance Maintenance: Sections
04Engine, Cooling and Exhaust Engine, Cooling and Exhaust: Sections
05Powertrain Management Powertrain Management: Sections
06Transmission and Drivetrain Transmission and Drivetrain: Sections
07Brakes and Traction Control Brakes and Traction Control: Sections
08Starting and Charging Starting and Charging: Sections
09Power and Ground Distribution Power and Ground Distribution: Sections
10Steering and Suspension Steering and Suspension: Sections
11Heating and Air Conditioning Heating and Air Conditioning: Sections
12Restraint Systems Restraint Systems: Sections
13Accessories and Optional Equipment Accessories and Optional Equipment: Sections
14Body and Frame Body and Frame: Sections
15Cruise Control Cruise Control: Sections
16Instrument Panel, Gauges and Warning Indicators Instrument Panel, Gauges and Warning Indicators: Sections
17Lighting and Horns Lighting and Horns: Sections
18Windows and Glass Windows and Glass: Sections
19Wiper and Washer Systems Wiper and Washer Systems: Sections