Diagnosis And Testing - Amplifier

Any diagnosis of the Audio system should begin with the use of scan tool. For information on the use of the scan tool, refer to the appropriate Diagnostic & Testing article. 

For complete circuit diagrams, refer to  SYSTEM WIRING DIAGRAMS  . 

The amplifier unit should be checked if there is no sound output noted from the speakers. For diagnosis of the power amplifier, refer to DIAGNOSIS AND TESTING  .