Speakers Inoperative - One or More

SPEAKERS INOPERATIVE - ONE OR MORE

DIAGNOSTIC SYSTEM CHECK - VEHICLE
Always perform the Radio/Audio System Diagnostic System Check before proceeding with these diagnostic procedures. Refer to Diagnostic System Check - Vehicle. Testing and Inspection

SPEAKER INOPERATIVE - ONE OR MORE

Without RPO U88
1. No audio output from the radio-Test for any AC voltage between the audio signal circuits at the affected speaker connector with the radio volume adjusted to 50 percent. If no AC voltage is present, check for shorts to battery positive voltage or shorts to ground on all affected speaker output circuits from the radio. If no shorts are located, replace the radio.
2. Speaker output open-Test the appropriate speaker outputs for an open.
3. Defective speaker-Replace the appropriate speaker.

With RPO U88
1. Speaker output from amplifier open-Test the appropriate speaker outputs for an open.
2. Defective speaker-Replace the appropriate speaker.
3. No audio output from the radio-Test for any AC voltage between the audio signal circuits at the affected speaker connector with the radio volume adjusted to 50 percent. If no AC voltage is present, check for shorts to battery positive voltage or shorts to ground on all affected speaker output circuits from the radio. If no shorts are located, replace the radio.
4. No audio output from the amplifier-Test for any AC voltage between the audio signal circuits at the affected speaker connector with the radio volume adjusted to 50 percent. If no AC voltage is present, check for shorts to battery positive voltage or shorts to ground on the affected speaker outputs. If no shorts are located, replace the amplifier.