Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Notes
Throttle Position Sensor: Notes — 1994 Audi S4 Service Manual & Component Testing >> Engine Sensors & Switches >> Throttle Position Sensor >> Notes Throttle Position Sensor: Notes NOTE: All voltage and continuity tests should be performed with a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance, unless specifically stated differently in testing procedures. For help with diagnostic testing. See WIRING DIAGRAMS. NOTE: The Throttle Position (TP) sensor is located on the throttle body. For location of throttle position sensor and harness connection. See COMPONENT LOCATIONS. Adjusting the Closed Throttle Position (CTP) switch automatically adjust the throttle position sensor. For Closed Throttle Position (CTP) sensor adjustment procedures. See CLOSED THROTTLE POSITION SWITCH ADJUSTMENT under ADJUSTMENTS in ON-VEHICLE ADJUSTMENTS article. For CTP sensor testing procedures. See CLOSED THROTTLE POSITION SWITCH.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.