Audi 80 Quiz
Body Electrical System

Plug Connections

In this manual: Body Electrical 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

For a long time, according to the fault statistics of the German Automobile Club (ADAC), loose plug connections were recorded as one of the most common causes of faults, occurring in almost all vehicles.


Audi has now put an end to this in the literal sense: practically all plug connectors are equipped with additional mechanical protection.


This protection must be overcome before disconnecting the plug. The most common types of connector protection are listed below.


Plug connectors of the injection system are secured by a wire clip that must be pressed down.

Many multi-pin connectors have locking latches on the sides, which must be pressed before disconnecting the plug.

For example, multi-pin connectors secured by an insert bracket are located on the instrument cluster unit.

Test yourself

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