20V Motronic ECU System

1991 200TQ with 20V Engine

ECU FAULT CODES AND OUTPUT TESTS

The ECU has the capability to store fault codes that occur while driving the engine is running. The ECU also has the capability to run Output Tests on the various solenoids the ECU controls. The Waste Gate Frequency Valve, Carbon Canister Valve(s), Idle Stabilizer Valve (ISV) and Fuel Injectors can be tested using the Output Tests [1].

Go to the ECU System Fault Code and Output Test page for more details on this operation for the 20V Turbo 5 cylinder Engine with the Motronic Engine Management system.

20V ECU system information index

References: [1] Audi of America, Technical service training publication:

"The New 20V Turbo Engine for the Audi 200 Quattro-publication All rights reserved.

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