Answer
Jun 19, 2025 - 07:31 PM
Yes, this service manual does include the wiring diagram for the exhaust valve actuator system on the 2023 Audi RS3 Sedan, and it specifically covers the updated 4-pin configuration you're referring to.
The component you're asking about is officially referred to in the manual as the Exhaust Door Control Unit (J945). The manual provides a detailed wiring schematic showing its connection to the engine control module via a 4-pin connector (T4e), along with relevant ground points, CAN-bus links, and power sources. Pin assignments and wire colors are clearly shown, making it easy to trace each signal.
There are also references to 3-pin and 5-pin connectors used in other configurations or model years, but the correct 4-wire layout used on the 2023 RS3 Sedan is indeed documented. You’ll find detailed diagrams under the exhaust system section as well as the wiring schematics index.
So if you're working on the valve control wiring or diagnosing actuator behavior, this manual will definitely have what you need.
