Operation CHARM: Car repair manuals for everyone.

Audio Amplifier

The audio amplifier receives a Hot At All Times B+ voltage through the 10 Amp radio fuse in the rear fuse block and is redundant from the rear fuse block to the amplifier.

Ground for the audio amplifier is through G202 and is redundant until S206.

The amplifier looks for a turn-ON signal at the left rear speaker inputs (+ and -) from the radio before turning ON.

The amplifier uses the Diagnostic Data Line (DDL) to adjust the radio input volume to keep the amplifier under 10% distortion.