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Audio Front Control Module - High Line (ACM): DTC's

DTC Description Possible Causes Action
B1A56-01 Antenna - General Electrical Failure
  • Antenna connection is broken
 Check the antenna connection and circuit and for signs damage. Repair/renew as necessary
B1D21-15 Remote Control Switch - Circuit short to battery or open
  • Remote control switch circuit short circuit to power or open circuit
 Refer to the electrical circuit diagrams and check the steering wheel remote control switch circuit. Repair/renew as necessary
B1D79-01 Microphone Input - General Electrical Failure
  • Microphone circuit open circuit, short circuit to ground or short circuit to power
  • Microphone configuration mismatched with Car Configuration File (CCF)
 Refer to the electrical circuit diagrams and check the microphone input circuit. Configure the system using the manufacturers approved diagnostic system
U0010-88 Medium Speed CAN Communication Bus - Bus off
  • BUS off
 Check for other modules reporting CAN Bus off or lost communication faults. Check CAN wiring. Using the manufacturer approved diagnostic system, complete a CAN integrity test. Refer to the electrical circuit diagrams and check the module CAN, power and ground circuits. Refer to the Network Communications information
U0140-00 Lost Communication With Body Control Module - No sub type information
  • Central Junction Box network malfunction
 Refer to the Network Communications information. Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Refer to the electrical circuit diagrams and check the CAN and module power and ground circuits. Repair/renew as necessary. Clear the DTCs and test for normal operation
U0155-00 Lost Communication With Instrument Panel Cluster (IPC) Control Module - No sub type information
  • CAN bus circuit fault
 Check for other modules reporting CAN Bus off or lost communication faults. Check CAN wiring. Using the manufacturer approved diagnostic system, complete a CAN integrity test. Refer to the electrical circuit diagrams and check the module CAN, power and ground circuits. Refer to the Network Communications information
U0156-00 Lost Communication With Information Center "A" - No sub type information
  • Lost communication with information center module
  • Incorrect component installed
 Carry out the general media orientated system transport (MOST) test. Check that components installed are correctly specified and correctly configured in the Car Configuration File (CCF) using the manufacturers approved diagnostic system
U0159-00 Lost Communication With Parking Assist Control Module "A" - No sub type information
  • CAN communication error
 Check for other modules reporting CAN Bus off or lost communication faults. Check CAN wiring. Using the manufacturer approved diagnostic system, complete a CAN integrity test. Refer to the electrical circuit diagrams and check the module CAN, power and ground circuits. Refer to the Network Communications information
U0164-00 Lost Communication With HVAC Control Module - No sub type information
  • CAN communication error
 Check for other modules reporting CAN Bus off or lost communication faults. Check CAN wiring. Using the manufacturer approved diagnostic system, complete a CAN integrity test. Refer to the electrical circuit diagrams and check the module CAN, power and ground circuits. Refer to the Network Communications information
U0166-00 Lost Communication With Auxiliary Heater Control Module - No sub type information
  • CAN communication error
 Check for other modules reporting CAN Bus off or lost communication faults. Check CAN wiring. Using the manufacturer approved diagnostic system, complete a CAN integrity test. Refer to the electrical circuit diagrams and check the module CAN, power and ground circuits. Refer to the Network Communications information
U0186-00 Lost Communication With Audio Amplifier "A" - No sub type information
  • CAN communication error
 Check for other modules reporting CAN Bus off or lost communication faults. Check CAN wiring. Using the manufacturer approved diagnostic system, complete a CAN integrity test. Refer to the electrical circuit diagrams and check the module CAN, power and ground circuits. Refer to the Network Communications information
U0191-00 Lost Communication With Television - No sub type information
  • CAN communication error
  • Incorrect component installed
 Check for other modules reporting CAN Bus off or lost communication faults. Check CAN wiring. Using the manufacturer approved diagnostic system, complete a CAN integrity test. Refer to the electrical circuit diagrams and check the module CAN, power and ground circuits. Refer to the Network Communications information. Check that components installed are correctly specified and correctly configured in the Car Configuration File (CCF) using the manufacturers approved diagnostic system
U0193-00 Lost Communication With "Digital Audio Control Module A" - No sub type information
  • CAN communication error
  • Incorrect component installed
 Check for other modules reporting CAN Bus off or lost communication faults. Check CAN wiring. Using the manufacturer approved diagnostic system, complete a CAN integrity test. Refer to the electrical circuit diagrams and check the module CAN, power and ground circuits. Refer to the Network Communications information. Check that components installed are correctly specified and correctly configured in the Car Configuration File (CCF) using the manufacturers approved diagnostic system
U0194-00 Lost Communication With "Digital Audio Control Module B" - No sub type information
  • CAN communication error
  • Incorrect component installed
 Check for other modules reporting CAN Bus off or lost communication faults. Check CAN wiring. Using the manufacturer approved diagnostic system, complete a CAN integrity test. Refer to the electrical circuit diagrams and check the module CAN, power and ground circuits. Refer to the Network Communications information. Check that components installed are correctly specified and correctly configured in the Car Configuration File (CCF) using the manufacturers approved diagnostic system
U0196-00 Lost Communication With Entertainment Control Module-Rear "A" - No sub type information
  • CAN communication error
  • Incorrect component installed
 Check for other modules reporting CAN Bus off or lost communication faults. Check CAN wiring. Using the manufacturer approved diagnostic system, complete a CAN integrity test. Refer to the electrical circuit diagrams and check the module CAN, power and ground circuits. Refer to the Network Communications information. Check that components installed are correctly specified and correctly configured in the Car Configuration File (CCF) using the manufacturers approved diagnostic system
U0197-00 Lost Communication With Telephone Control Module - No sub type information
  • CAN communication error
  • Incorrect component installed
 Check for other modules reporting CAN Bus off or lost communication faults. Check CAN wiring. Using the manufacturer approved diagnostic system, complete a CAN integrity test. Refer to the electrical circuit diagrams and check the module CAN, power and ground circuits. Refer to the Network Communications information. Check that components installed are correctly specified and correctly configured in the Car Configuration File (CCF) using the manufacturers approved diagnostic system
U0237-00 Lost Communication With Digital Audio Control Module "C" - No sub type information
  • CAN communication error
  • Incorrect component installed
 Check for other modules reporting CAN Bus off or lost communication faults. Check CAN wiring. Using the manufacturer approved diagnostic system, complete a CAN integrity test. Refer to the electrical circuit diagrams and check the module CAN, power and ground circuits. Refer to the Network Communications information. Check that components installed are correctly specified and correctly configured in the Car Configuration File (CCF) using the manufacturers approved diagnostic system
U0253-00 Lost Communication With Portable Audio Interface Module - No sub type information
  • CAN communication error
  • Incorrect component installed
 Check for other modules reporting CAN Bus off or lost communication faults. Check CAN wiring. Using the manufacturer approved diagnostic system, complete a CAN integrity test. Refer to the electrical circuit diagrams and check the module CAN, power and ground circuits. Refer to the Network Communications information. Check that components installed are correctly specified and correctly configured in the Car Configuration File (CCF) using the manufacturers approved diagnostic system
U0256-00 Lost Communication With Front Controls Interface Module "A" - No sub type information
  • CAN communication error
 Check for other modules reporting CAN Bus off or lost communication faults. Check CAN wiring. Using the manufacturer approved diagnostic system, complete a CAN integrity test. Refer to the electrical circuit diagrams and check the module CAN, power and ground circuits. Refer to the Network Communications information.
U0264-00 Lost Communication With Camera Module- Rear - No sub type information
  • CAN communication error
 Check for other modules reporting CAN Bus off or lost communication faults. Check CAN wiring. Using the manufacturer approved diagnostic system, complete a CAN integrity test. Refer to the electrical circuit diagrams and check the module CAN, power and ground circuits. Refer to the Network Communications information.
U0300-00 Software Incompatibility - No sub type information
  • Invalid configuration message is received
 Configure the module using the approved diagnostic system
U0300-48 Software Incompatibility - supervision software failure
  • Supervision software failure
 Clear the DTC and retest. If the problem persists, configure the module using the approved diagnostic system
U0417-00 Invalid Data Received From Park Brake Control Module - No sub type information
  • Error signal over CAN
 Check for other DTCs. Check that components installed are correctly specified and correctly configured in the Car Configuration File (CCF) using the manufacturers approved diagnostic system
U0422-00 Invalid Data Received From Body Control Module - No sub type information
  • No sub type information
 Check for other DTCs. Check that components installed are correctly specified and correctly configured in the Car Configuration File (CCF) using the manufacturers approved diagnostic system
U0546-00 Invalid Data Received From Entertainment Control Module-Front - No sub type information
  • No sub type information
 Check for other DTCs. Check that components installed are correctly specified and correctly configured in the Car Configuration File (CCF) using the manufacturers approved diagnostic system
U1A14-48 CAN Initialization Failure - supervision software failure
  • Audio control module supervision software failure
 Check for other modules reporting CAN Bus off or lost communication faults. Check CAN wiring. Using the manufacturer approved diagnostic system, complete a CAN integrity test. Refer to the electrical circuit diagrams and check the module CAN, power and ground circuits. Refer to the Network Communications information.
U1A14-49 CAN Initialization Failure - Internal electronic failure
  • Internal electronic failure
 Check for other modules reporting CAN Bus off or lost communication faults. Check CAN wiring. Using the manufacturer approved diagnostic system, complete a CAN integrity test. Refer to the electrical circuit diagrams and check the module CAN, power and ground circuits. Refer to the Network Communications information.
U2003-31 Fibre Optic Communication Bus - no signal
  • MOST ring break - no data received
 Carry out the general media orientated system transport (MOST) test. Refer to the Network Communications information.
U2003-86 Fibre Optic Communication Bus - Signal invalid
  • Signal invalid
 Carry out the general media orientated system transport (MOST) test. Refer to the Network Communications information.
U2003-88 Fibre Optic Communication Bus - Bus off
  • Bus off
 Carry out the general media orientated system transport (MOST) test. Refer to the Network Communications information.
U2100-00 Initial Configuration Not Complete - No sub type information
  • No sub type information
 Re-configure the module using the manufacturer approved diagnostic system
U3000-04 Control Module - System Internal Failures
  • Audio unit internal failure - no communications with CD module
 Check the power and ground circuits to the component. Refer to the electrical circuit diagrams. Refer to the warranty policy and procedures information if a module is suspect
U3000-49 Control Module - Internal electronic failure
  • Audio unit internal electronic failure (internal error)
 Check the power and ground circuits to the component. Refer to the electrical circuit diagrams. Refer to the warranty policy and procedures information if a module is suspect
U3000-55 Control Module - not configured
  • Audio unit not configured
  • Audio Amplifier Module circuit short to ground, short to power, open circuit, high resistance
  • Equalizer setting not equal to car information of integrated head unit
 Where available, configure the module using the approved diagnostic system. check Audio Amplifier Module circuit for short to ground, short to power, open circuit, high resistance
U3000-68 Control Module - event information
  • Audio unit event information - MOST transceiver overheating
 Refer to the electrical circuit diagrams and check the power and ground circuits to the component. Check the MOST circuit. Carry out the general MOST test. Refer to the Network Communications section of the workshop information and in the approved diagnostic system. Clear the DTC and retest. Refer to the warranty policy and procedures information if a module is suspect
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