Audio Front Control Module (ACM)

DTC	Description	Action
B1318	Battery voltage Low	GO to Pinpoint Test AG .
B1342	ECU is Faulted	NOTE: DTC B1342 can set as a result of a speaker circuit fault. In this case, DTC B2965 should also set. Make sure to repair the speaker circuit fault before diagnosing DTC B1342. CLEAR the DTCs.REPEAT the self-test.If DTC B1342 is the only DTC retrieved again, INSTALL a new ACM. REFER to Audio Control Module (ACM) .
B2103	Antenna Not Connected	GO to Pinpoint Test A .
B2405	Audio Disc CD Player Thermal Shutdown Fault	The ACM was over-temperature. This may occur during extended use. Audio operation can resume after the ACM cools. CLEAR the DTCs. This is normal operation.
B2406	Audio Disc CD Player Internal Fault	NOTE: DTC B1342 may also be set with this DTC. CLEAR the DTCs.REPEAT the self-test.If DTC B2406 retrieved again, INSTALL a new ACM. REFER to Audio Control Module (ACM) .
B2477	ECU Configuration Failure	This DTC sets due to incomplete or incorrect PMI procedures. CHECK the vehicle service history for recent service actions related to the ACM. If there have been recent service actions with the ACM, INSTALL as-built data from PTS, following the diagnostic scan tool instructions under Module Programming>As-Built. If there have been no recent service actions, INSTALL a new ACM to correct the failure to retain configuration data. REFER to Audio Control Module (ACM) .
B2924	Audio Button Stuck	GO to Pinpoint Test K .
B2965	Audio System Speaker Circuit Fault	The ACM has detected a fault on one or more speaker circuit(s). REFER to the Symptom Chart - Sound Quality to diagnose the speaker concern.
U0140	Lost Communication with Body Control Module (GEM)	GO to Pinpoint Test AA .
U0155	Lost Communication With Instrument Panel Cluster (IC) Control Module	GO to Pinpoint Test AB .
U0197	Lost Communication With Telephone Control Module	GO to Pinpoint Test AD .
U2050	No Application Present	This DTC sets due to incomplete or incorrect PMI procedures. CHECK the vehicle service history for recent service actions related to the ACM. If there have been recent service actions with the ACM, INSTALL as-built data from PTS, following the diagnostic scan tool instructions under Module Programming>As-Built. If there have been no recent service actions, INSTALL a new ACM to correct the failure to retain configuration data. REFER to Audio Control Module (ACM) .
U2051	One or More Calibration Files Missing / Corrupt	This DTC sets due to incomplete or incorrect PMI procedures. CHECK the vehicle service history for recent service actions related to the ACM. If there have been recent service actions with the ACM, INSTALL as-built data from PTS, following the diagnostic scan tool instructions under Module Programming>As-Built. If there have been no recent service actions, INSTALL a new ACM to correct the failure to retain configuration data. REFER to Audio Control Module (ACM) .