Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
USB Connection BASEPLATE -R193-, Troubleshooting
Special tools and workshop equipment required
- Hand-Held Multimeter V.A.G 1526C
- Connector Test Kit V.A.G 1594C
The USB connection is not capable of On Board Diagnostics (OBD).
The voltage supply can be checked at the connector.
Test Conditions
- USB memory stick/MP3 player OK, refer to the Operating Instructions.
- Fuse OK.
- Radio/RNS no faults using Vehicle diagnostic tester.
Procedure
-- Remove the USB connection baseplate. Refer to USB CONNECTION BASEPLATE -R193- .
-- Disconnect the connector under the USB connection baseplate.
-- Turn on the radio/RNS
-- Measure the voltage between contacts 3 and 6 as well as between contacts 3 and 8 on the wiring harness connector using V.A.G 1526C and the cables from the V.A.G 1594C.
Specified value: approximately 12 V.
-- Turn off the radio/RNS.
Voltage values not OK:
-- Check the wire connections between the radio and the USB connection baseplate according to the wiring diagram.
Voltage values OK:
-- Replace the USB connection baseplate.
NO RELATED
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.