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Audio Control Module (ACM)

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 B2985 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. 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. TEST the system for normal operation.
B2477 Module Configuration Failure See MODULE CONFIGURATION .
B2985 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 RADIO 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 .
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