Speakers Inoperative - One or More

SPEAKERS INOPERATIVE - ONE OR MORE

DIAGNOSTIC SYSTEM CHECK - ENTERTAINMENT SYSTEM

Always perform the Entertainment System Diagnostic System Check before proceeding with these diagnostic procedures. Refer to Diagnostic System Check -Radio/Audio System. Diagnostic System Check

ALL SPEAKERS INOPERATIVE

IMPORTANT: The following information lists the most probable cause of the concern to the least probable cause followed by the appropriate test for that condition. If the list leads to the replacement of a component, always inspect for a poor connection before proceeding with the replacement.

ALL RADIOS
1. Battery positive voltage circuit to the amplifier open. Test the battery positive voltage circuit to the amplifier for an open.
2. Ground circuit to the amplifier open. Test the ground circuit to the amplifier for an open.
3. No audio output from the amplifier. Replace the amplifier.

IMPORTANT: The following procedure assumes all speakers are operative for all modes of operation except digital radio.

WITH RPO U2K
1. Audio signal circuit shorted. Test the audio signal circuits for a short.
2. No audio output from the digital radio receiver. Replace the digital radio receiver.
3. No digital radio audio output from the radio. Replace the radio.

ALL SPEAKERS ON ONE CHANNEL INOPERATIVE

IMPORTANT: The following information lists the most probable cause of the concern to the least probable cause followed by the appropriate test for that condition. If the list leads to the replacement of a component, always inspect for a poor connection before proceeding with the replacement.

ALL RADIOS
1. Low level audio signal circuit open or shorted. Test all low level audio signal circuits for an open or short.
2. No audio output from the amplifier. Replace the amplifier.

IMPORTANT: The following procedure assumes all speakers are operative for all modes of operation except digital radio.

WITH RPO U2K
1. Remote radio audio signal circuit open. Test the appropriate remote radio audio signal circuit for an open.
2. No audio output from the digital radio receiver. Replace the digital radio receiver.
3. No digital radio audio output from the radio. Replace the radio.

ONE SPEAKER INOPERATIVE

IMPORTANT: The following information lists the most probable cause of the concern to the least probable cause. If the list leads to the replacement of a component, always inspect for a poor connection before proceeding with replacement.

1. Speaker output open or shorted. Test the appropriate speaker output circuits for an open or short.
2. No audio output from the amplifier. Test for any AC voltage between the appropriate speaker output circuits at the speaker harness connector,disconnected with the radio volume adjusted to an audible level. If AC voltage is present, replace the speaker. Refer to Speaker Replacement Reference.If no AC voltage is present, replace the amplifier.
3. Defective speaker. Replace the inoperative speaker.

SPEAKER(S) - REDUCED VOLUME

IMPORTANT: The following information lists the most probable cause of the concern to the least probable cause. If the list leads to the replacement of a component, always inspect for a poor connection before proceeding with replacement.

ALL RADIOS
1. Speaker output circuit high resistance. Test the appropriate speaker output circuits for high resistance.
2. Low level audio circuit open. Test the appropriate low level audio circuit for an open.
3. Defective speaker - Replace the appropriate speaker.

IMPORTANT: The following procedure assumes all speakers are operative for all modes of operation except digital radio.

WITH RPO U2K
1. Audio common circuit open. Test the audio common circuit for an open.
2. No audio output from the digital radio receiver. Replace the digital radio receiver.
3. No digital radio audio output from the radio. Replace the radio.