Integrated Audio Module (ACM)

CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle

CAUTION: When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part number 3548-1358-00

NOTE: If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the warranty policy and procedures manual (section B1.2), or determine if any prior approval programme is in operation, prior to the installation of a new module/component.

NOTE: Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the manufacturer-approved diagnostic system)

NOTE: When performing voltage or resistance tests, always use a digital multimeter accurate to three decimal places and with a current calibration certificate. When testing resistance, always take the resistance of the digital multimeter leads into account

NOTE: Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests

NOTE: Inspect connectors for signs of water ingress, and pins for damage and/or corrosion

NOTE: If diagnostic trouble codes are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent concern may be the cause. Always check for loose connections and corroded terminals

NOTE: Where an 'on demand self-test' is referred to, this can be accessed via the 'diagnostic trouble code monitor' tab on the manufacturers approved diagnostic system

The table below lists all Diagnostic Trouble Codes (DTCs) that could be logged in the Integrated Audio Module, for additional diagnosis and testing information refer to the relevant diagnosis and testing section For additional information, refer to DIAGNOSIS AND TESTING .

DTC	Description	Possible Cause	Action
B117A-11	Backup Microphone - circuit short to ground	Microphone circuit short to ground	Refer to the electrical circuit diagrams and check the microphone circuit for short to ground. Repair wiring and retest
B117A-13	Backup Microphone - circuit open	Microphone circuit open circuit	Refer to the electrical circuit diagrams and check the microphone circuit for open circuit. Repair wiring and retest
B119F-11	GPS Antenna - circuit short to ground	Global Positioning System antenna not connected to integrated audio module Global Positioning System antenna circuit short to ground	Check Global Positioning System antenna is connected to the integrated audio module. Refer to the electrical circuit diagrams and check the antenna circuit for short to ground. Repair wiring and retest
B119F-13	GPS Antenna - circuit open	Global Positioning System antenna not connected to integrated audio module Global Positioning System antenna circuit open circuit	NOTE: This DTC may be stored even though no fault condition is present and should be ignored unless the customer has reported a navigation system concern. Clear the DTC and retest. Verify the customer concern prior to diagnosis Check Global Positioning System antenna is connected to the integrated audio module. Refer to the electrical circuit diagrams and check the antenna circuit for open circuit. Repair wiring and retest
B11A3-49	Gyroscope - internal electronic failures	Internal fault with gyroscope, not plausible compared to steering angle data	Refer to the electrical circuit diagrams and check power supply and ground to integrated audio module. Repair wiring as required. Clear DTC and recheck. If DTC remains suspect integrated audio module, refer to the warranty policy and procedures manual if a module/component is suspect
B121C-13	Hard Drive - circuit open	Internal fault with communication with hard drive	Refer to the electrical circuit diagrams and check power supply and ground to integrated audio module. Repair wiring as required. Clear DTC and recheck. If DTC remains suspect integrated audio module, refer to the warranty policy and procedures manual if a module/component is suspect
B121C-49	Hard Drive - internal electronic failures	Internal fault with hard drive	Refer to the electrical circuit diagrams and check power supply and ground to integrated audio module. Repair wiring as required. Clear DTC and recheck. If DTC remains suspect integrated audio module, refer to the warranty policy and procedures manual if a module/component is suspect
B1252-09	USB Port - component failures	No Universal Serial Bus function	Refer to the electrical circuit diagrams and check power supply and ground to integrated audio module. Check Universal Serial Bus circuits. Repair wiring as required. Clear DTC and recheck. If DTC remains suspect integrated audio module, refer to the warranty policy and procedures manual if a module/component is suspect
B1252-19	USB Port - circuit current above threshold	Excessive power drain on Universal Serial Bus port	Disconnect all Universal Serial Bus devices. Connect a test stick and test Universal Serial Bus port using the manufacturer approved diagnostic system
B1296-4A	Navigation Map Data - incorrect component installed	Navigation map does not match the market of the vehicle	NOTE: This DTC may be stored even though no fault condition is present and should be ignored unless the customer has reported a navigation system concern. Clear the DTC and retest. Verify the customer concern prior to diagnosis Update map data as required
B12A0-11	Auxiliary Input - circuit short to ground	Auxiliary input circuit detected short to ground	Refer to the electrical circuit diagrams and check Auxiliary input circuits. If no faults found suspect the integrated audio module, refer to the warranty policy and procedures manual if a module/component is suspect
B12A0-13	Auxiliary Input General - circuit open	Auxiliary input circuit detected open circuit	Refer to the electrical circuit diagrams and check Auxiliary input circuits. If no faults found suspect the integrated audio module, refer to the warranty policy and procedures manual if a module/component is suspect
B1A56-11	Antenna - circuit short to ground	AM/FM antenna circuit short to ground	Refer to the electrical circuit diagrams and check AM/FM antenna circuits. If no faults found suspect the integrated audio module, refer to the warranty policy and procedures manual if a module/component is suspect
B1A56-13	Antenna - circuit open	AM/FM antenna circuit open circuit	Refer to the electrical circuit diagrams and check AM/FM antenna circuits. If no faults found suspect the integrated audio module, refer to the warranty policy and procedures manual if a module/component is suspect
B1D50-07	Digital Disk Player - mechanical failures	Mechanical fault	Perform basic visual inspection for foreign matter inside disk player. Remove foreign matter if possible. If no objects are found suspect integrated audio module
B1D55-11	Antenna#2 - circuit short to ground	FM/TMC antenna circuit short to ground	Refer to the electrical circuit diagrams and check FM/Traffic Message Channel antenna circuits. If no faults found suspect the integrated audio module, refer to the warranty policy and procedures manual if a module/component is suspect
B1D55-13	Antenna#2 - circuit open	FM/Traffic Message Channel antenna circuit open circuit	Refer to the electrical circuit diagrams and check FM/Traffic Message Channel antenna circuits. If no faults found suspect the integrated audio module, refer to the warranty policy and procedures manual if a module/component is suspect
B1D57-11	Antenna#4 Circuit - circuit short to ground	Vehicle Information and Communication System beacon antenna short to ground	NOTE: Vehicle Information and Communication System (VICS) is a type of Traffic Message Channel system used in the Japan market only Check Vehicle Information and Communication System beacon antenna is connected to the integrated audio module. Refer to the electrical circuit diagrams and check Vehicle Information and Communication System beacon antenna circuits. If no faults found suspect the integrated audio module, refer to the warranty policy and procedures manual if a module/component is suspect
B1D57-13	Antenna#4 Circuit - circuit open	Vehicle Information and Communication System beacon antenna circuit open circuit	NOTE: Vehicle Information and Communication System (VICS) is a type of Traffic Message Channel system used in the Japan market only Check Vehicle Information and Communication System beacon antenna is connected to the integrated audio module. Refer to the electrical circuit diagrams and check Vehicle Information and Communication System beacon antenna circuits. If no faults found suspect the integrated audio module, refer to the warranty policy and procedures manual if a module/component is suspect
B1D78-11	Auxiliary Input - circuit short to ground	Auxiliary #1 input circuit short to ground	Refer to the electrical circuit diagrams and check Auxiliary input #1 circuits. If no faults found suspect the integrated audio module, refer to the warranty policy and procedures manual if a module/component is suspect
B1D78-13	Auxiliary Input - circuit open	Auxiliary #1 input circuit open circuit	Refer to the electrical circuit diagrams and check Auxiliary input #1 circuits. If no faults found suspect the integrated audio module, refer to the warranty policy and procedures manual if a module/component is suspect
B1D79-11	Microphone Input - circuit short to ground	Microphone #1 circuit short to ground	Refer to the electrical circuit diagrams and check microphone #1 circuits. If no faults found suspect the integrated audio module, refer to the warranty policy and procedures manual if a module/component is suspect
B1D79-13	Microphone Input - circuit open	Microphone #1 circuit open circuit	Refer to the electrical circuit diagrams and check microphone #1 circuits. If no faults found suspect the integrated audio module, refer to the warranty policy and procedures manual if a module/component is suspect
P150E-00	Electronic Control Module Cooling Fan Circuit - no sub type information	Control module cooling fan signal line detected high	Check cooling fan operation using manufacturers approved diagnostic tool
U2005-62	Vehicle Speed - signal compare failure	Speed signal broadcast on MOST is not received by the integrated audio module. Module can calculate speed from Global Positioning System data and this registers as a signal compare failure	NOTE: This DTC may be stored even though no fault condition is present and should be ignored unless the customer has reported a navigation system concern. Clear the DTC and retest. Verify the customer concern prior to diagnosis Check Anti-Lock Brake Control Module for related DTCs and refer to the relevant DTC index. Check power supply and ground supplies to module. Perform a network integrity check using the manufacturers diagnostic system. Check MOST ring for breaks. If no faults found suspect integrated audio module, refer to the warranty policy and procedures manual if a module/component is suspect
U200D-11	Control Module Output Power A - circuit short to ground	Output to amplifier circuit short to ground	Refer to the electrical circuit diagrams and check the output to amplifier circuit. Repair wiring as required and retest the system. If the DTC is still present suspect the integrated audio module, refer to the warranty policy and procedures manual if a module/component is suspect
U200D-13	Control Module Output Power A - circuit open	Output to amplifier circuit open circuit	Refer to the electrical circuit diagrams and check the output to amplifier circuit. Repair wiring as required and retest the system. If the DTC is still present suspect the integrated audio module, refer to the warranty policy and procedures manual if a module/component is suspect
U2100-00	Initial Configuration Not Complete - no sub type information	Central Car Configuration file not received by Integrated Audio Module	Refer to the electrical circuit diagrams and check the power and ground connections to the module. Using the manufacturer approved diagnostic system, complete a network integrity test. Refer to the electrical circuit diagrams and check the circuits between the integrated audio module and the touch screen display. Check the MOST ring between the integrated audio module and the touch screen display. Program the integrated audio module using the manufacturer approved diagnostic system
U2101-00	Control Module Configuration Incompatible - No sub type information	Incorrect component installed Vehicle not configured correctly	NOTE: Only applicable to the Japanese market - This DTC may be stored even though no fault condition is present and should be ignored unless the customer has reported an information and entertainment system concern. Clear the DTC and retest. Verify the customer concern prior to diagnosis Check/configure the car configuration using the approved diagnostic system
U2200-41	Control Module Configuration Memory Corrupt - general checksum failure	General checksum failure/internal memory failure	Clear the DTC and retest. If the problem persists, renew the module. Refer to the warranty policy and procedures manual if a module is suspect
U3000-41	Control Module - general checksum failure	General checksum failure	Clear the DTC and retest. If the problem persists, renew the module. Refer to the warranty policy and procedures manual if a module is suspect
U3000-45	Control Module - program memory failure	Internal software failure	Reprogram the module using the manufacturers approved diagnostic system. Clear the DTC and retest. If the DTC remains suspect the integrated audio module, refer to the warranty policy and procedures manual if a module is suspect
U3000-46	Control Module - calibration / parameter memory failure	Mismatch between local configuration file and application software	NOTE: This DTC may be stored even though no fault condition is present and should be ignored unless the customer has reported an information and entertainment system concern. Clear the DTC and retest. Verify the customer concern prior to diagnosis Reprogram the module using the manufacturer approved diagnostic system. Clear the DTC and retest. If the DTC remains suspect the integrated audio module, refer to the warranty policy and procedures manual if a module is suspect
U3000-49	Control Module - Internal electronic failure	Internal electronic failure	Clear the DTC and retest. If the problem persists, renew the module. Refer to the warranty policy and procedures manual if a module is suspect
U3000-4A	Control Module - incorrect component installed	Incorrect hardware or software detected	Check installed hardware is correct, install new hardware as required. Check software version is correct for hardware and vehicle configuration. Reprogram modules using the manufacturers diagnostic system as required
U3000-98	Control Module - component or system over temperature	Hardware overheated	Allow vehicle to cool before performing any diagnostic steps. Move vehicle into shade and operate climate control on a cool setting. When vehicle has cooled down check cooling fan operates and ventilation ducts are not obstructed. Clear the DTC and retest the system. If the DTC remains suspect the integrated control module, refer to the warranty policy and procedures manual if a module is suspect
U3003-62	Battery Voltage - Signal compare failure	Signal compare failure Battery supply voltage below a recognized value	Check vehicle battery and charging system. Refer to the relevant informationl. Refer to the electrical circuit diagrams and check the power and ground supply circuits to the modules