Theory Of Operation

NOTE:

There are two versions of the B1408-12 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 B1408-12 PREMIUM test. If the vehicle is not equipped with an Amplifier use the B1408-12 BASE test.

The Left Rear Speaker (+) circuit and the Left Rear Speaker (-) circuit are outputs of the Radio. The Radio controls and monitors these circuits for a concern.

For a detailed description of the Audio System. Refer to DESCRIPTION .

For additional information regarding the operation of the Audio System. Refer to OPERATION .