Test A: Radio Does Nop Operate And Radio Information Does Not Appear On Display; Test B: Radio Volume Does Not Vary With Vehicle Speed (Asp And Se Models); Test C: Radio Operates But Radio Information Does Not Display Properly (Asp And Se Models); Test D: One Or Both Lh Front Or Rh Front Speakers Are Inoperative (Asp And Int Models Without Rear Speakers) - Honda GoldWing GL1500 Service Manual