Locating the OBD2 port in your 1999 Audi A6 can be tricky. This guide provides a detailed walkthrough, including images, to help you find it quickly. We’ll also discuss repurposing an OBD2 connector for older Audi models.
Pinpointing the OBD2 Port in Your 1999 Audi A6
In most 1999 Audi A6 models, the OBD2 port is located beneath the dashboard on the driver’s side, usually to the left of the steering column or near the center console. It’s a trapezoidal connector with 16 pins.
Important Note: Some early 1999 A6 models might not have a standardized OBD2 port. If you can’t find it in the described location, consult your owner’s manual for the exact location.
Repurposing an OBD2 Connector for Older Audi Models (OBD1)
While your 1999 A6 likely uses OBD2, this section details how to modify an OBD2 connector for compatibility with older Audi models using OBD1. This process involves repinning the connector to match the OBD1 configuration.
This example uses a connector from a 2000 Audi A6:
Steps for Repinning:
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Remove the Purple Locking Mechanism: The connector has a purple lock that needs to be slid off to access the pins.
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Identify Pin Positions: Once the lock is removed, you can see the pin positions.
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Remove Unnecessary Wires: Remove the black tape to expose the wires. Identify and remove unnecessary wires, such as extra ground wires and unused connections.
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Release and Repin: Use a small safety pin to release the individual pins from the connector housing.
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Position Wires Correctly: Refer to the OBD1 wiring diagram and place the remaining wires in the correct pin positions within the OBD2 connector.
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Reinstall the Lock: Once the pins are in their correct locations, slide the purple lock back onto the connector.
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Connect to OBD1 Port: Attach appropriate connectors to interface with the OBD1 diagnostic ports under the hood.
This modification allows you to use a standard OBD2 scanner with an adapter on older Audi vehicles equipped with OBD1 systems. Remember, this process requires careful attention to detail and a thorough understanding of wiring diagrams. If you are unsure, consult a professional mechanic.
