AMPLIFIER
DESCRIPTION
Vehicles equipped with the Boston Acoustics speaker
package have a separate amplifier unit. The amplifier
(2) is rated at 288 watts. The amplifier is mounted to
the left rear quarter panel behind the quarter trim
panel.
OPERATION
The amplifier receives fused battery current from a fuse in the Integrated Power Module (IPM) at all times. The
internal circuitry of the amplifier switches the amplifier on based upon a CAN bus message that is received from the
radio receiver whenever the radio is turned on. The amplifier receives the sound signal inputs from the left and right
rear outputs of the radio, then sends the amplified speaker outputs for each of those channels to the speakers.
DIAGNOSIS AND TESTING
AMPLIFIER
Any diagnosis of the Audio system should begin with the use of a scan tool and the appropriate Diagnostic
Service information.
For complete circuit diagrams, refer to the appropriate wiring information.
The amplifier unit should be checked if there is no sound output noted from the speakers. For diagnosis of the
power amplifier, (Refer to 8 - ELECTRICAL/AUDIO/SPEAKER - DIAGNOSIS AND TESTING).
8A - 164
AUDIO/VIDEO - SERVICE INFORMATION
WK