Speakers Inoperative - One or More

Speakers Inoperative - One or More

Preliminary Information

Perform the Diagnostic System Check - Vehicle. Diagnostic System Check - Vehicle

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. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics

With RPO UM8

1. Battery positive voltage circuit to the amplifier open-Test the battery positive voltage circuit to the amplifier for an open. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics
2. Ground circuit to the amplifier open-Test the ground circuit to the amplifier for an open. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics
3. Speaker output from the radio shorted-Test each speaker output of the radio for a short to ground or short to voltage. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics
4. No audio output from the amplifier-Replace the amplifier. Refer to Amplifier Replacement.

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. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics

Without RPO UQ7

1. Speaker output open-Test the appropriate speaker output circuits for an open. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics

Important: The radio must be programmed after replacement. Refer to Radio Setup. With RPO UM8, perform the Radio Setup. Programming and Relearning

2. No audio output from the radio-Test for any AC voltage between the appropriate speaker output circuits at the speaker harness connector, disconnected with the radio volume adjusted to 50 percent. If AC voltage is present, replace the speaker. Refer to Speaker Replacement Reference. If no AC voltage is present, replace the radio. Refer to Refer to Programing and Relearning for replacement, setup, and programming.Programming and Relearning

With RPO UQ7

1. Speaker output circuit from amplifier open-Test the appropriate speaker output circuits for an open. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics

Important: With RPO Y91, Bose amplifier, perform the setup procedure for the amplifier. Refer to Audio Amplifier Setup. Programming and Relearning

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 50 percent. If AC voltage is present, replace the speaker. Refer to Speaker Replacement Reference. If no AC voltage is present, replace the amplifier. Refer to Amplifier Replacement.

Speakers - One Channel 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. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics

With RPO UQ7

Important: With RPO Y91, Bose amplifier, perform the setup procedure for the amplifier. Refer to Audio Amplifier Setup. Programming and Relearning

1. Speaker output circuit from amplifier shorted-Test the appropriate speaker output circuits for a short to ground or short to voltage. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics
2. Replace the amplifier.

Without RPO UQ7

Front Speakers Inoperative

1. Speaker output circuit from amplifier shorted-Test the appropriate speaker output circuits for a short to ground or short to voltage. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics
2. Replace the amplifier.

Rear Speakers Inoperative

1. Speaker output circuit from amplifier shorted-Test the appropriate speaker output circuits for a short to ground or short to voltage. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics
2. 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 open-Test the appropriate audio signal for an open. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics
2. No audio output from the digital radio receiver-Replace the digital radio receiver. Refer to Digital Radio Receiver Replacement and Digital Radio Receiver Setup. Programming and Relearning
3. No digital output from the radio-Replace the radio. Refer to Refer to Programing and Relearning for replacement, setup, and programming. Programming and Relearning