WIS Document: 17524

| | Fault diagnosis, no sound/no display on SID Fault symptom No sound at all. No radio display on SID. Diagnostic procedure | 1. | Check whether fuse 13 is intact and live. | 2. | Check whether fuse 9 is intact for radio mode and that it is live. | 3. | Check that battery voltage is present on pin 4 of connector A at the rear of the radio. | 4. | Check that battery voltage is present on pin 7 of connector A at the rear of the radio when supplied with +X power.