B1409-Rear Left Audio Speaker Output Circuit Low - Base: Notes
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .
NOTE:
There are two versions of the B1409 DTC test. In order to select the proper test you must know if the vehicle is equipped with an Amplifier. If the vehicle is equipped with an Amplifier use the B1409-PREMIUM test. If the vehicle is not equipped with an Amplifier use the B1409-BASE test.