Open Circuit
Open circuit
Checking the component and wiring
- Ignition off.
- Disconnect the connector for the right-hand subwoofer behind the rear seat.
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 the Subwoofer module (SUB) terminal #B5 and right-hand subwoofer terminal #2. Check for an open-circuit.
Check the signal cable between the Subwoofer module (SUB) terminal #B12 and right-hand subwoofer terminal #1. Check for an open-circuit.
Check the subwoofer cable terminals #1 and #2. Check for an open-circuit.
Remedy as necessary.
Other information
- Signal specification Signal Specification, Subwoofer Module (SUB)
- Connecting the breakout box Breakout Box Connection, Subwoofer Module (SUB)
- Rear Seat Backrest Speaker Rear Seat Backrest Speaker
- Subwoofer module (SUB) Subwoofer Module (SUB)
- Checking wiring and terminals Checking Wiring and Terminals
Continue - Verification
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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 there is sound from the loudspeakers for the Subwoofer module (SUB).
Is the function OK?
Yes - Troubleshooting procedure complete
No - Checking the component
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Checking the component
Hint: Try connecting the connector for the non-functioning subwoofer to the other subwoofer.
- Ignition off.
- Connect the functioning loudspeaker connector to the non-functioning loudspeaker.
- Ignition on.
Check that there is sound from the loudspeakers for the Subwoofer module (SUB).
Is any noise produced from the connected subwoofer?
Yes - Replacing a component
No - Replacing the control module
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Replacing a component
- Ignition off.
- Replace the right-hand subwoofer.
- Reinstall the connectors, components etc.
- Ignition on.
Check that there is sound from the loudspeakers for the Subwoofer module (SUB).
Is the function OK?
Yes - Troubleshooting procedure complete
No - Fault-tracing information
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Replacing the control module
- Ignition off.
- Replace the Subwoofer module (SUB).
- Reinstall the connectors, components etc.
- Ignition on.
Check that there is sound from the loudspeakers for the Subwoofer module (SUB).
Other information
- Subwoofer module (SUB) Subwoofer Module (SUB)
Is the function OK?
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 the component and wiring
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