For 1990-2009 cars only
Diagnostic System Check - Vehicle
Always perform the Diagnostic System Check - Vehicle before proceeding with these diagnostic procedures. Refer to Diagnostic System Check - Vehicle .
Schematic Reference: Radio/Navigation System Schematics
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 Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Without RPO UZ6
| • | Speaker output circuit resistance high--Test the appropriate speaker output circuits for high resistance. Refer to Circuit Testing and Wiring Repairs . |
| • | Defective speaker--Replace the appropriate speaker. Refer to Speaker Replacement Reference . |
With RPO UZ6
| • | Speaker output circuit resistance high--Test the appropriate speaker output circuits from the amplifier for high resistance. Refer to Circuit Testing and Wiring Repairs . |
| • | Low level audio circuit open--Test the appropriate low level audio output circuits from the radio to the amplifier for an open. Refer to Circuit Testing and Wiring Repairs . |
| • | Defective speaker--Replace the appropriate speaker. Refer to Speaker Replacement Reference . |
