| 0 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation |
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| Check the CDs are inserted correctly in the CD changer housings. | Move on to Step 1 | CDs not inserted correctly. | Insert the CDs correctly |
| 1 | CHECK THE CD CHANGER POWER SUPPLY | All OK | Problems encountered | Operation |
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| Check the continuity of the wiring between Connect and the CD Changer.Check the power supply to the CD-changer is correct by carrying out the See E3510 RADIO | Move on to Step 2 | 1. Wiring broken.2. Power supply interrupted.3. CD changer activation signal interrupted. | 1. Restore wiring continuity.2. Restore correct power supply See E3510 RADIO 3. Restore the activation signal See E3510 RADIO |
| 2 | CHECK AUDIO SIGNALS AT CD CHANGER | All OK | Problems encountered | Operation |
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| Check the presence of audio communication signals between the CD-Changer and the centre console. | End of diagnosis. | 1. Audio signals interrupted.2. CD changer defective. | 1. Restore wiring continuity.2. Replace the CD changer |