Test results

Check the amplifier is correctly earthed

Move on to Step 2

Power supply interrupted

Restore correct power supply

 See E3510 RADIO

Check for the presence of input audio signals operating the subwoofer

Check for the presence of output audio signals operating the subwoofer by carrying out the

 See Test 5570TK SUBWOOFER OPERATION AUDIO SIGNALS CHECK

Move on to Step 3

1. Audio signals interrupted

2. Radio defective

1. Restore the audio signal wiring

2. Replace the radio

 Op. 5570T80 CAR RADIO EQUIPMENT - R+R

Check that a subwoofer activation enablement signal is present by carrying out

 See Test 5570TK SUBWOOFER OPERATION AUDIO SIGNALS CHECK

End of diagnosis

1. Wiring interrupted

2. Radio defective

3. Subwoofer defective

1. Restore correct wiring

 See E3510 RADIO

2. Replace the radio

 Op. 5570T80 CAR RADIO EQUIPMENT - R+R

3. Replace the subwoofer

 Op. 5580T40 BOSE SOUND SYSTEM SUBWOOFER - R.R.