Not Connected or Communication Problems. Permanent Fault

2004 Volvo S80 L6-2.9L Turbo VIN 91 B6294TSECTION Not Connected or Communication Problems. Permanent Fault





Not connected or communication problems. Permanent fault

Checking contact resistance and oxidation
Check 10 CD changer and head unit/audio control module connectors for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check cable between the amplifier #D6 and head unit/audio control module #D6 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.

Other information:
- To access/replace the amplifier, see Windshield antenna / amplifier, CD player, replacing Windshield Antenna / Amplifier, CD Player, Replacing.
- To access the 10 CD changer, see Windshield antenna / amplifier, CD player, replacing Windshield Antenna / Amplifier, CD Player, Replacing.
- To access/replace head unit/audio control module , see Radio cassette player, replacing Radio Cassette Player, Replacing.
- To connect the breakout box, see Connecting the breakout box, Audio control module Connecting the Breakout Box.
- For information about signals and connectors, see Signal specification, audio control module Signal Specification
If the 10 CD changer is now OK, the fault was due to a bad connection in the connectors.









Is the 10 CD changer OK?

Yes - FAULT FOUND

No - Checking wiring and components

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Checking wiring and components
Check cable between 10 CD changer #1, #2, #3, #4 and #5 and head unit/audio module #E1, #E2, #E3, #E4 and #E5 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.

Other information:
- To access the 10 CD changer, see Windshield antenna / amplifier, CD player, replacing Windshield Antenna / Amplifier, CD Player, Replacing.
- To access/replace head unit/audio control module , see Radio cassette player, replacing Radio Cassette Player, Replacing.
- To connect the breakout box, see Connecting the breakout box, Audio control module Connecting the Breakout Box.
- For information about signals and connectors, see Signal specification, audio control module Signal Specification and Signal specification, audio control module Signal Specification.









Select "Continue" when the fault has been remedied.

Continue - Verification

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Verification




Verification

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








- Ignition off.
- Reinstall connectors, components etc.
- Ignition on.
Check that CD changer functions.

Does the CD changer function?

Yes - Verification completed

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 contact resistance and oxidation

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RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
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  • β€’ You are not confident in the next step or safety outcome.