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.
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HOMESERVICE MANUALSAUDI199590 QUATTRO SPORT V6-2.8L (AAH)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTHROTTLE POSITION SENSORTESTING AND INSPECTIONCHECKING THROTTLE POSITION SENSORCHECKING RESISTANCE
1995 Audi 90 Quattro Sport V6-2.8L (AAH)
Checking Resistance
1995 Audi 90 Quattro Sport V6-2.8L (AAH)SECTION Checking Resistance
NOTE:
For functional testing of the Throttle Position Sensor (TPS), also see On-Board Diagnostics, "Read Measuring Value Block" function 08, display group 002. Testing and Inspection
CHECKING TPS RESISTANCE
- Disconnect harness connector at the TPS.
- Connect multimeter (Fluke 83 or equivalent) to terminals 1 and 2.
^ Specified value: 1500-2600 ohms
- Connect multimeter to terminals 2 and 3.
^ Closed throttle position: approx. 750-1300 ohms.
- Slowly operate accelerator pedal fully.
^ Wide open throttle: maximum 3600 ohms.
If either specification is not achieved:
- Replace TPS.
- Check and erase Diagnostic Trouble Code (DTC) memory.
For functional testing of the Throttle Position Sensor (TPS), also see On-Board Diagnostics, "Read Measuring Value Block" function 08, display group 002. Testing and Inspection
CHECKING TPS RESISTANCE
- Disconnect harness connector at the TPS.
Throttle Position Switch/Sensor Terminals:
- Connect multimeter (Fluke 83 or equivalent) to terminals 1 and 2.
^ Specified value: 1500-2600 ohms
- Connect multimeter to terminals 2 and 3.
^ Closed throttle position: approx. 750-1300 ohms.
- Slowly operate accelerator pedal fully.
^ Wide open throttle: maximum 3600 ohms.
If either specification is not achieved:
- Replace TPS.
- Check and erase Diagnostic Trouble Code (DTC) memory.
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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.