Pinpoint Test E : No Sound From All Speakers: Notes

Diagnostic Overview 

Refer to Audio System/Navigation for schematic and connector information.

Normal Operation and Fault Conditions 

When the key is in START, the ACM receives voltage on the START signal circuit. The ACM then mutes the speaker output to prevent voltage spikes from producing a popping noise through the speakers. However, a short to voltage on this circuit causes the ACM output to be continuously muted.

If a speaker circuit fault DTC is set in the ACM, the cause of the concern is a short to ground or short to voltage in an individual speaker circuit, which has caused the ACM overload protection to activate. If a speaker circuit fault DTC is present, Refer to Information and Entertainment System - Premium .