B1D9F-13: Engine Speed Input - Circuit Open: Action

NOTE: This Diagnostic Trouble Code is not related to any infotainment audio functionality or chimes/beeps/warnings

For additional information, Refer to: SPEAKERS . Pinpoint test C where the 'Module reporting the fault' is the Audio Amplifier Module (AAM) and the 'Downstream component' is the Powertrain Control Module (PCM). Refer to the vehicle wiring diagrams
For the all audio systems the engine speed input signal is connected to the Audio Amplifier Module (AAM)
- (Circuit reference - RPM_in)