Signal Missing

Signal missing

Checking components and wiring








- Ignition off
- Disconnect the connector for the right headset panel.
Check the buttons for the right headset output 3. Test the buttons by changing between previous and next track selection and changing between CD/MD and radio.
Check the cable terminals. Check for contact resistance, loose connections and oxidation.
Check the cable terminals in the female and male sections of the connector. The cable terminals must not be damaged or pressed back.
Check the signal cable between audio module (AUD) terminal #C20 and headset output terminal #10 in the right C-post. Check for an open-circuit.
Check the signal cable between audio module (AUD) terminal #C21 and headset output 3 terminal #8 in the right C-post. Check for an open-circuit.
Check the resistance between terminals #8 and #10 in the connector for the right headset panel. The resistance must be approximately 39 kOhms.
Remedy as necessary.

Other information:
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box, Audio Module (AUD)
- To access or replace the audio module (AUD), see Audio module (AUD), replacing Audio Module (AUD), Replacing
- For information about signals, see Signal specification Signal Specification, Audio Module (AUM)
- Checking wiring and terminals Checking Wiring and Terminals.













Continue - Verification

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Verification




Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Check that the buttons for the headset output function. Check this by pressing the buttons for the next track and the previous track and by changing between the CD/MD and the radio using the SEL button.

Do the buttons function?

Yes - Troubleshooting procedure complete

No - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - Exit Fault-tracing

No - Attempt New Test

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Attempt New Test - Checking components and wiring

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