BE–105 BODY ELECTRICAL SYSTEM – AUDIO SYSTEM 23 | CD Player | EITHER SPEAKER DOES NOT WORK Is radio operating normally? Yes → CD player faulty. No Is hiss produced by non–functioning speaker? Yes → Radio assembly faulty. Recheck system after repair. No Is there continuity in speaker wire harness? No → Speaker wire harness faulty. Yes Temporarily install another speaker. Functions OK. Yes → Speaker faulty. No Power amplifier faulty. Recheck system after repair. 24 | CD Player | WOOFER SPEAKER DOES NOT WORK Check if RAD No. 1 fuse is OK? No → Replace fuse Yes Is radio operating normally? Yes → Radio receiver assembly faulty. No Check if GND to power amplifier is OK? No → GND faulty. Yes Is +B applied to power amplifier No → +B wire harness faulty. Yes Is AMP applied to power amplifier? No → Check the radio receiver assembly. Yes Is there continuity in wire harness? (Radio receiver to power amplifier) No → Wire harness faulty. Yes Temporarily install another woofer speaker. Functions OK? Yes → Woofer speaker faulty. No Is there continuity in speaker wire harness? No → Speaker wire harness faulty. Yes Temporarily install another power amplifier. Functions OK? No → Radio receiver assembly faulty. Yes Power amplifier faulty.