Signal Too High/Signal Too Low

Signal too high/signal too low

Checking the cable








- Ignition off
- Disconnect the connector for the rear left-hand treble loudspeaker/upper loudspeaker.
- Disconnect the connector for the rear right-hand treble loudspeaker/upper loudspeaker.
- Disconnect the 16-pin connector for the audio module (AUD).

Hint: Both treble loudspeakers and the right and left-hand rear loudspeakers are connected on the following signal cables. For further information, see the wiring diagram.

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 #B4 and treble speaker/upper loudspeaker terminal #2 in the rear left. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.
Check the signal cable between audio module (AUD) terminal #B12 and treble speaker/upper loudspeaker terminal #1 in the rear left. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.
Check the signal cable between audio module (AUD) terminal #B5 and rear right-hand loudspeaker terminal #2. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.
Check the signal cable between audio module (AUD) terminal #B13 and the rear right-hand loudspeaker terminal #1. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.
Remedy as necessary.

Other information
- Connecting the breakout box Connecting The Breakout Box, Audio Module (AUD)
- Audio module (AUD), replacing Audio Module (AUD), Replacing
- Loudspeaker, rear side door, replacing Loudspeaker, Rear Side Door
- Signal specification Signal Specification, Audio Module (AUD)
- 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 sound is heard from speaker for Audio module (AUD) by trying the radio FM/AM or the cd-player.

Is the function OK?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - 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 the cable

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