Auxiliary Input / Output Jack: Testing and Inspection

USB Connection Baseplate (R193), Troubleshooting

Special tools, testers and auxiliary items 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/Radio Navigation System no faults displayed using the Vehicle Diagnosis, Testing and Information System (VAS 5051B)

Procedure

- Remove the USB connection baseplate. Refer to => [ USB Connection Baseplate ] USB Connection Baseplate (R193).

- Disconnect the connector under the USB connection baseplate.

- Switch on the radio.

- 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.

- Switch radio off.

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.