Audio Control Module (ACM) DTC Chart

AUDIO CONTROL MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC	Description	Action
B1031	SDARS Satellite Antenna Open	See PINPOINT TEST 12: POOR RECEPTION/POOR SOUND QUALITY/NO SOUND - SATELLITE AUDIO .
B1032	SDARS Satellite Antenna Short	See PINPOINT TEST 12: POOR RECEPTION/POOR SOUND QUALITY/NO SOUND - SATELLITE AUDIO .
B1318	Battery Voltage Low	See PINPOINT TEST 14: DTC B1318 (ACM) .
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. See AUDIO CONTROL MODULE (ACM) REMOVAL/INSTALLATION . TEST the system for normal operation.
B2103	Antenna Not Connected	See PINPOINT TEST 1: POOR RECEPTION - AM/FM .
B2406	Audio Disc CD Player Internal Fault	NOTE: DTC B1342 will also be set. CLEAR the DTCs. REPEAT the self-test. If DTC B2406 is retrieved again, INSTALL a new ACM. See AUDIO CONTROL MODULE (ACM) REMOVAL/INSTALLATION . TEST the system for normal operation.
B2477	Module Configuration Failure	See MODULE CONFIGURATION .
B2965	Audio System Speaker Circuit Fault	See PINPOINT TEST 2: POOR QUALITY/DISTORTED/NO SOUND FROM ONE OR MORE SPEAKERS (NOT ALL SPEAKERS) .
U0140	Lost Communication With Body Control Module (GEM)	See PINPOINT TEST 13: DTC U0140 .
U0155	Lost Communication With Instrument Panel Cluster (IC) Control Module	See PINPOINT TEST 6: THE SPEED SENSITIVE VOLUME DOES NOT OPERATE CORRECTLY .
U0193	Lost Communication With Digital Audio Control Module (SDARS)	See PINPOINT TEST 11: THE SATELLITE AUDIO IS INOPERATIVE/DOES NOT OPERATE CORRECTLY .
U0255	Lost Communication With Front Controls Interface Module	See PINPOINT TEST 8: THE AUDIO SYSTEM DOES NOT OPERATE CORRECTLY FROM THE FRONT CONTROLS INTERFACE MODULE (FCIM) .
U0256	Lost Communication With Front Display Interface Module	See PINPOINT TEST 10: AN INDIVIDUAL FRONT DISPLAY INTERFACE MODULE (FDIM) DISPLAY IS INOPERATIVE/DOES NOT OPERATE CORRECTLY .
U2050	No Application Present	See MODULE CONFIGURATION .
U2051	One or More Calibration Files Missing/Corrupt	See MODULE CONFIGURATION .