All Speakers Non Operative
- Are radio display lights on.
- Radio is not ON, see Radio Diagnosis.
- Check fuses, amplifier connectors and wires for proper connection.
- Check for good ground to radio and amplifier.
- Check amplifier, for battery voltage, ON/OFF voltage, and ground.
- Battery voltage OK and NO voltage at ON/OFF terminal, check for short or open in ON/OFF circuit. ON/OFF voltage OK, and NO battery voltage, check for short or open in battery circuit.
- Prior to replacing amplifier check fuse 3 in Fuse Block. If not OK, replace fuse. If fuse blows again disconnect amplifier B+ wire connector. If fuse still blows problem is not amplifier. If fuse does not blow replace amplifier.
- If shorted or open circuit repair as necessary. If voltage and ground at amplifier are OK, use a known good radio. If speakers are still inoperative, replace amplifier. If speakers are OK, replace radio.