Audi 80 Quiz
KE-III-Jetronic Injection System

Throttle Position Sensor Test

In this manual: KE-III-Jetronic Injection System
Technical Description — 39Engines — 41Exhaust System — 13Cooling System — 28Fuel tank and fuel pump — 12Air Filter and Intake Ducts — 13Mono-Motronic Injection System — 18Digifant Injection System — 19KE-III-Jetronic Injection System — 35MPI and MPFI Injection Systems — 32Clutch — 11Transmission and Driveline — 21Suspension and Steering — 33Brake System — 41Anti-lock brake system — 8Wheels and Tires — 13Body Electrical System — 35Ignition System — 24Lighting — 14Signaling Devices — 7Instruments and Auxiliary Equipment — 54Heating and Ventilation — 7Body Components — 18Troubleshooting — 6Specifications — 13
~1min read

Models with manual transmission
The ohmmeter leads cannot be connected directly to the sensors, one of which is located below the throttle valve housing. Therefore, only the connector accessible from above is disconnected. Measure the resistance at the sensor wiring:

TEST PROCEDURE

Idle switch: connect the ohmmeter to terminals 1 and 2 of the connector.

Throttle valve in the idle position: reading 0 ohms. Open the throttle valve slightly: the reading should change to infinity (open circuit).

Full-load switch: connect the ohmmeter to terminals 2 and 3.

Throttle valve in the full-load position: reading 0 ohms. Close the throttle valve slightly: the reading should change to infinity (open circuit).

Test yourself

A quick Audi 80 quiz: every answer comes with an explanation and a link to the manual page.