Diagnostic System Check - Vehicle
Always perform the Diagnostic System Check - Vehicle before proceeding
with these diagnostic procedures. Refer to
Diagnostic System Check - Vehicle
in Vehicle DTC Information.
Schematic Reference:
Radio/Audio System Schematics
Only Front Speakers or Only Rear Speakers Inoperative (ION-RPO UZ6 only) (VUE-RPO
WBM only)
Important: The following information lists the most
probable cause of the concern to the least probable cause, followed by the appropriate
test for the condition. If the list leads to the replacement of a component, always
inspect for a poor connection before proceeding with the replacement. Refer to
Testing for Intermittent Conditions and Poor Connections
and
Connector Repairs
in Wiring Systems.
Audio output from amplifier to speaker shorted to ground or shorted to battery
positive voltage.
Test the affected audio output circuits from the amplifier for a short to ground
or a short to positive battery voltage. Refer to
Circuit Testing
and
Wiring Repairs
in
Wiring Systems.
Speaker Inoperative - One or More
Without RPO UZ6 (ION) or RPO WBM (VUE)
- 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 speaker output circuits from the radio. If no shorts
are located, replace the radio. Refer to
Radio Replacement
.
- Speaker output open--Test the appropriate speaker outputs for an
open. Refer to
Circuit Testing
and
Wiring Repairs
in Wiring Systems.
- Defective speaker--Replace the appropriate speaker. Refer to
Speaker Replacement Reference
.
With RPO UZ6 (ION) or RPO WBM (VUE)
- Speaker output from amplifier open--Test the appropriate speaker
outputs for an open. Refer to
Circuit Testing
and
Wiring Repairs
in Wiring Systems.
- Defective speaker--Replace the appropriate speaker. Refer to
Speaker Replacement Reference
.
- 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. Refer to
Circuit Testing
and
Wiring Repairs
in Wiring Systems. If no shorts are located, replace the amplifier.
Refer to
Radio Speaker Amplifier Replacement
.