Diagnostics and testing of the audio system (Discovery 3)

Review

The audio system networks a number of networks and vehicle modules to provide a complete entertainment package for passengers.

Due to the complexity of the system, there are a number of different methods used to diagnose the system, since the networks used include the CAN bus (controller area network) and MOST system (data transmission system for media systems).

For a detailed description of the design and operation of the audio system, refer to the appropriate section in the workshop manual. For information on network diagnostics, see "Network communication" in the workshop manual.

Inspection and verification

1. Make sure the customer's complaint is valid.

2. Visually inspect for obvious mechanical and electrical problems.

Mechanical factors	Electrical Factors
Status and installation of the audio unit Speaker condition and installation Amplifier condition and installation Condition and installation of the satellite digital radio communication system (SDARS) Status and installation of the remote control SDARS / global positioning system antenna (GPS) /phone Antennas on the side and rear windows Antenna amplifiers Audio/video input/output panel (AVIO)	Fuses CJB - fuse 42P CJB - fuse 52P CJB - fuse 53P CJB - fuse 57P CJB -fuse 58P BJB - fuse 18E Wiring harnesses Fiber optic cable harnesses Wiring harness / electrical connectors Relay of a complex of infotainment systems and equipment CAN electrical circuits MOST circuits

3. If there is an obvious cause for the problem you identified or the customer described, fix it before proceeding with the next steps (if possible).


4. Use an approved diagnostic system or scan tool (tester), to retrieve all DTCs before referring to the Symptom Table DTC Index (DTC).

Since DTCs are stored in more than one module, a complete vehicle data readout is recommended.

Clear all DTCs after troubleshooting.

DTC index

NOTE: Universal Scan Tools cannot read the listed codes or can only read 5-digit codes. Match the 5 digits from the scan tool with the first 5 digits of the listed 7 digit code to identify the problem (the last 2 digits give additional information read by the diagnostic system approved by the manufacturer).

DTCs	Description	Possible reasons	Actions
B1A004B	control module	Amplifier shutdown request (overheat)	Clear the DTCs and recheck. Consider atmospheric conditions before rejecting a module.
B1A0113	Speaker #1	Left Rear Door Speaker Circuit - High Resistance	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A011A	Speaker #1	Left rear door speaker circuit - short to ground Speaker circuit - short circuit to + battery	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A0213	Speaker #2	Right Rear Door Speaker Circuit - High Resistance	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A021A	Speaker #2	Right rear door speaker circuit - short to ground Speaker circuit - short circuit to + battery	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A0313	Speaker #3	Left Front Midrange/High Range Speaker Circuit - High Resistance	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A031A	Speaker #3	Left front mid/high range speaker circuit - short to ground Speaker circuit - short circuit to + battery	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A0413	Speaker #4	Right Front Midrange/High Range Speaker Circuit - High Resistance	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A041A	Speaker #4	Right Front Midrange/High Range Speaker Circuit Short to Ground Speaker circuit - short circuit to + battery	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A0513	Speaker #5	Left woofer circuit - high resistance	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A051A	Speaker #5	Left woofer circuit - short to ground Speaker circuit - short circuit to + battery	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A0613	Speaker #6	Right woofer circuit - high resistance	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A061A	Speaker #6	Right woofer circuit - short to ground Speaker circuit - short circuit to + battery	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A0713	Speaker #7	Left front woofer circuit - high resistance	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A071A	Speaker #7	Left front woofer circuit - short to ground Speaker circuit - short circuit to + battery	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A0813	Speaker No. 8	Right front woofer circuit - high resistance	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A081A	Speaker No. 8	Right front woofer circuit - short to ground Speaker circuit - short circuit to + battery	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A0913	Speaker No. 9	Surround speaker left left circuit - high resistance	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A091A	Speaker No. 9	Left rear surround speaker circuit - short to ground Speaker circuit - short circuit to + battery	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A1013	Speaker #10	Right rear surround speaker circuit - high resistance	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A101A	Speaker #10	Left rear surround speaker circuit - short to ground Speaker circuit - short circuit to + battery	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A1113	Speaker No. 11	Center front auxiliary speaker circuit high resistance	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A111A	Speaker No. 11	Front center auxiliary speaker circuit - short to ground Speaker circuit - short circuit to + battery	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A1213	Speaker No. 12	Woofer circuit - high resistance	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A121A	Speaker No. 12	Woofer circuit - short to ground Speaker circuit - short circuit to + battery	Refer to the electrical manual and check the speaker circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A9668	The bus remains active after a trip request.	The lamp remains active 2 seconds after the request to turn off.	Perform a general MOST check. Refer to section "Network communication" in the workshop manual.
B1D8413	Headphone panel 1	Headphone panel circuit 1 - high resistance	Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1D8513	Headphone panel 2	Headphone panel 2 circuit high resistance	Check the element's power and ground circuits. Refer to the electrical manual.
B1D8613	Headphone panel 3	Headphone panel circuit 3 - high resistance	Check the element's power and ground circuits. Refer to the electrical manual.
B1D8713	Headphone panel 4	Headphone panel circuit 4 - high resistance	Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A5601	Antenna	Antenna connection is broken	Refer to the electrical manual and check the antenna circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1D2101	Remote control switch	General electrical fault	Check the element's power and ground circuits. Refer to the electrical manual.
B1D2115	Remote control switch	Remote control switch circuit - short to voltage Remote control switch circuit - high resistance	Refer to the electrical manuals and check the remote control electrical circuit. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1D7901	Microphone input	Microphone circuit - open, short to ground, or short to + battery Microphone configuration mismatch with CCF	Refer to the electrical manual and check the microphone input circuit. Set up the system configuration using an approved diagnostic system. Refer to the guided diagnostic program for this code on the approved diagnostic system.
U001087	Medium speed CAN bus	No message from audio unit	Check the CAN circuits. Refer to the electrical manual. Refer to section "Network communication" in the workshop manual.
U007388	Bus shutdown "A" control module data transmission	Bus disabled	Check for other DTCs. Clear all DTCs and road test the vehicle. If the problem persists, contact your dealer's technical support for further assistance. Do not, under any circumstances, replace any items to resolve this issue. Refer to section "Network communication" in the workshop manual.
U018487	Loss of communication with the radio	No message	Refer to section "Network communication" in the workshop manual.
U01874A	Lost Communication with Disc Player/Changer Module	Lost Communication with Disc Player/Changer Module Wrong item installed The MOST network security system prevents unauthorized addition of the module to the system.	Set up the network configuration to recognize the module using the prescribed diagnostic system.
U030055	Software incompatibility	Audio unit not configured	Configure the module using an approved diagnostic system.
U1A1448	CAN initialization failure	ACM control software malfunction	Check the element's power and ground circuits. Refer to the electrical manual. Customize the module configuration (to her), using an approved diagnostic system. If a module is suspected, refer to the warranty policy and procedures manual.
U1A1449	CAN initialization failure	Internal electronic fault	Check the element's power and ground circuits. Refer to the electrical manual. Customize the module configuration (to her), using an approved diagnostic system. If a module is suspected, refer to the warranty policy and procedures manual.
U1A254A	Loss of communication with ICM	Wrong element installed The MOST network security system does not allow unauthorized addition of a module to the system.	Perform a general MOST check. Refer to section "Network communication" in the workshop manual.
U1A264A	Loss of communication with TEL	Wrong element installed The MOST network security system does not allow unauthorized addition of a module to the system.	Perform a general MOST check. Refer to section "Network communication" in the workshop manual.
U1A274A	Loss of communication with REM	Wrong element installed The MOST network security system does not allow unauthorized addition of a module to the system.	Perform a general MOST check. Refer to section "Network communication" in the workshop manual.
U1A284A	Loss of communication with SRM	Wrong element installed The MOST network security system does not allow unauthorized addition of a module to the system.	Perform a general MOST check. Refer to section "Network communication" in the workshop manual.
U1A294A	Loss of communication with AAM	Wrong element installed The MOST network security system does not allow unauthorized addition of a module to the system.	Perform a general MOST check. Refer to section "Network communication" in the workshop manual.
U1A304A	Lost Communication with TVM	Wrong element installed The MOST network security system does not allow unauthorized addition of a module to the system.	Perform a general MOST check. Refer to section "Network communication" in the workshop manual.
U1A314A	Lost Communication with TMC	Wrong element installed The MOST network security system does not allow unauthorized addition of a module to the system.	Perform a general MOST check. Refer to section "Network communication" in the workshop manual.
U200325	Fiber optic data bus	Waveform/curve error	Perform a general MOST check. Refer to section "Network communication" in the workshop manual.
U200331	Fiber optic data bus	MOST loop open - no data received	Perform a general MOST check. Refer to section "Network communication" in the workshop manual.
U200381	Fiber optic data bus	Invalid serial data received	Perform a general MOST check. Refer to section "Network communication" in the workshop manual.
U200386	Fiber optic data bus	Invalid signal	Perform a general MOST check. Refer to section "Network communication" in the workshop manual.
U200388	Fiber optic data bus	Bus disabled	Perform a general MOST check. Refer to section "Network communication" in the workshop manual.
U300044	control module	Audio block data memory failure	Check the element's power and ground circuits. Refer to the electrical manual. If a module is suspected, refer to the warranty policy and procedures manual.
U300048	control module	Audio unit control software malfunction (Internal error)	Check the element's power and ground circuits. Refer to the electrical manual. If a module is suspected, refer to the warranty policy and procedures manual.
U300049	control module	Audio unit internal electronic fault (Internal error)	Check the element's power and ground circuits. Refer to the electrical manual. If a module is suspected, refer to the warranty policy and procedures manual.
U300055	control module	Audio unit not configured The code may also be stored due to a faulty wiring harness EQ setting does not match vehicle information in IHU	Configure the module using an approved diagnostic system.
B100E25	Input video signal "A"	TV/rear seat entertainment video input - disconnected TV/DVD malfunction	Make sure the input signal is connected and the system is transmitting.
B101025	Input video signal "WITH"	Rear camera video input - disconnected Camera failure	Make sure the input signal is connected and the system is transmitting.
B1B0049	Additional module "A"	Navigation module - internal electrical fault	Check the temperature regime and the correct installation of the navigation module. Install a new navigation module if necessary, refer to the new module/component installation note at the top of this DTC Index
B1D6249	Additional module"B"	Vehicle information and communication system module (VICS) - internal electrical fault	Check the module's power and ground circuits. Refer to the electrical manual. If a module is suspected, refer to the warranty policy and procedures manual.
B1D6287	Additional module"B"	Electrical circuit of the vehicle information and communication system module (VICS) - short circuit to ground VICS module circuit - short circuit to battery VICS Module Circuit - High Resistance VICS module disconnected VICS module failure	Refer to the electrical circuit diagrams and check the circuits of the VICS module for a short to ground, short to battery, or open circuit. Check and, if necessary, install a new VICS module. Set up the system configuration using an approved diagnostic system. If a module is suspected, refer to the warranty policy and procedures manual.
U1A0087	Private bus circuit	Missing message from front entertainment system module (FEM) Missing connector on multimedia module Communication network failure.	Refer to the description of the lost connection condition at the beginning of the section "Network communication" in the workshop manual.
U1A0131	Communication channel	NOTE: A message is displayed "NO NAVIGATION AVAILABLE" (navigation unavailable) Touch screen malfunction (TSD) navigation system module, video interface (GVIF) GVIF disconnected GVIF - short circuit to ground, short circuit to + battery, open	Check that the GVIF circuit connectors are connected correctly. Refer to the electrical circuit diagrams and test the multimedia module GVIF circuits for short circuit to ground, short circuit to battery, or open circuit.
B1A0044	control module	Rear entertainment system control module - module data memory failure	If a module is suspected, refer to the warranty policy and procedures manual.
B1A0098	control module	Overheating of the rear entertainment system control module, element or system	Check module and circuits. Refer to electrical manuals. Clear the DTCs and recheck. Before concluding that a module is faulty, take atmospheric conditions into account.
B1D5079	DVD player	DVD changer - mechanical failure Error report from AiNet	Check for mechanical failure (store jamming, etc.). Repair if necessary.
B1D5093	DVD player	DVD changer not responding Communication error between main microprocessor and DVD microprocessor No response from AiNet	Refer to the electrical manual and check the AiNet electrical circuits. Repair if necessary.
B1D5098	DVD player	High temperature condition detected	Check the installation of the DVD module. Make sure there is sufficient airflow. Clear the DTCs and recheck. Before concluding that a module is faulty, take atmospheric conditions into account.
B1D8193	Left rear display module	Left rear display not responding Communication error between main microprocessor and left display microprocessor No response from the IS bus	Check the IS bus circuits. Refer to electrical manuals.
B1D8198	Left rear display module	High temperature condition detected	Clear the DTCs and recheck. Before concluding that a module is faulty, take atmospheric conditions into account.
B1D8293	Right rear display module	Right rear display not responding Communication error between main microprocessor and right display microprocessor No response from the IS bus	Check the IS bus circuits. Refer to electrical manuals.
B1D8298	Right rear display module	High temperature condition detected	Clear the DTCs and recheck. Before concluding that a module is faulty, take atmospheric conditions into account.
B1D8393	Center rear display module	Center rear display not responding Communication error between main microprocessor and right display microprocessor No response from the IS bus	Check the IS bus circuits. Refer to electrical manuals.
B1D8398	Center rear display module	High temperature condition detected	Clear the DTCs and recheck. Before concluding that a module is faulty, take atmospheric conditions into account.
U1A0355	Vehicle Configuration Options	Rear Entertainment Module (REM) - configuration not configured	Configure the module using an approved diagnostic system.
U1A1731	Partial MOST loop registered by REM	No signal from rear entertainment module (REM) Fiber Optic Loop Break Condition Registered	Perform a general MOST check. Refer to section "Network communication" in the workshop manual and in the approved diagnostic system.
U1A334A	Loss of communication with ACM	Lost Communication with Front Audio Control Module (ACM) - Wrong element installed The MOST network security system does not allow unauthorized addition of a module to the system.	Set up the network configuration to recognize the module using the prescribed diagnostic system.
B1A004A	control module	Traffic information channel module (TMC) - Wrong item installed (possible wrong region)	Set up the system configuration using an approved diagnostic system.
B1A5618	Antenna	Traffic information channel antenna circuit (TMC) - current below threshold	Refer to the electrical manual and check the electrical circuit of the antenna. Refer to the electrical manual. Repair if necessary.
B1A5619	Antenna	Traffic information channel antenna circuit (TMC) - current above threshold	Refer to the electrical manual and check the antenna circuit. Repair if necessary.
B1A0016	control module	Control Module Circuit Voltage Below Threshold Voltage below normal for more than 10 seconds (main control module voltage - 2V) Low battery voltage Control Module Circuit - High Resistance	Check the condition and charge of the battery. Refer to the relevant section in the workshop manual. Check the module's power and ground circuits. Refer to electrical manuals.
B1A0017	control module	Control Module Circuit - Voltage Above Threshold High battery voltage (recharge) Control module circuit - short to + battery	Check the condition and charge of the battery. Refer to the relevant section in the workshop manual. Check the module's power and ground circuits. Refer to electrical manuals.
B1A0048	control module	Malfunction of control module control software	Configure the module using an approved diagnostic system. If a module is suspected, refer to the warranty policy and procedures manual.
B1A5611	Antenna	Antenna circuit - short to ground	Refer to the electrical manual and check the electrical circuit of the antenna. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A5612	Antenna	Antenna circuit - short circuit to + battery	Refer to the electrical manual and check the electrical circuit of the antenna. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1A5613	Antenna	Antenna Circuit - High Impedance	Refer to the electrical manual and check the electrical circuit of the antenna. Refer to the guided diagnostic program for this code on the approved diagnostic system.
B1D5511	Antenna #2	Antenna 2 circuit - short to ground	Check antenna and electrical circuits. Refer to the electrical manual.
B1D5512	Antenna #2	Antenna 2 circuit - short circuit to + battery	Check antenna and electrical circuits. Refer to electrical manuals.
B1D5513	Antenna #2	Antenna Circuit 2 - High Impedance	Check antenna and electrical circuits. Refer to electrical manuals.
B1D5611	Antenna Circuit #3	Antenna circuit 3 - short to ground	Check antenna and electrical circuits. Refer to electrical manuals.
B1D5612	Antenna Circuit #3	Antenna circuit 3 - short circuit to + battery	Check antenna and electrical circuits. Refer to electrical manuals.
B1D5613	Antenna Circuit #3	Antenna Circuit 3 - High Impedance	Check antenna and electrical circuits. Refer to electrical manuals.
B1D5711	Antenna Circuit #4	Antenna circuit 4 - short to ground	Check antenna and electrical circuits. Refer to electrical manuals.
B1D5712	Antenna Circuit #4	Antenna circuit 4 - short circuit to + battery	Check antenna and electrical circuits. Refer to electrical manuals.
B1D5713	Antenna Circuit #4	Antenna Circuit 4 - High Impedance	Check antenna and electrical circuits. Refer to electrical manuals.
B1D5811	TV output	Television output circuit - short to ground	Check TV output circuits. Refer to electrical manuals.
B1D5812	TV output	Television output circuit - short to battery	Check TV output circuits. Refer to electrical manuals.
B1D5813	TV output	TV output circuit high resistance	Check TV output circuits. Refer to electrical manuals.
U1A2087	Partial MOST loop registered by TVM	No signal from TV module (TVM) Fiber Optic Loop Break Condition Registered	Perform a general MOST check. Refer to section "Network communication" in the workshop manual and in the approved diagnostic system.
B1A0049	control module	Amplifier internal electrical fault (this code can be registered in multiple modules) Touch screen display internal electrical fault (TSD) (can occur in multiple modules)	Check the module's power and ground circuits. Refer to electrical manuals. If a module is suspected, refer to the warranty policy and procedures manual.
U1A0362	Vehicle Configuration Options	Signal matching error	Configure the module using an approved diagnostic system.
U300004	control module	Internal malfunction of the audio unit - lack of communication with the CD module	Check the element's power and ground circuits. Refer to the electrical manual. If a module is suspected, refer to the warranty policy and procedures manual.
U30004A	control module	Audio Control Module - Incorrect Component Installed The MOST network security system prevents unauthorized addition of a module to the system. 'SRM Installed' parameter not configured in vehicle configuration file (SRM installed), but the module is installed on the vehicle.	Configure the network to recognize the module using the prescribed diagnostic system.
U300055	control module	Audio unit not configured The code may also be stored due to a faulty wiring harness EQ setting does not match vehicle information in IHU	Configure the module using an approved diagnostic system.
U300068	control module	Event information for the audio unit - MOST transceiver overheating	Refer to the electrical manuals and check the power and ground circuits of the element. Check the MOST circuit. Perform a general MOST check. Refer to section "Network communication" in the workshop manual and in the approved diagnostic system. If a module is suspected, refer to the warranty policy and procedures manual.

SDARS Diagnostics (digital satellite broadcasting)

The following information is intended to assist in diagnosing basic satellite radio system problems.


DTCs are the primary source of information for diagnosing non-basic faults.

There are five conditions that can affect available channels:

A: No signal available

The signal does not reach the module.

The car must be in a direct line of communication with the satellite, i.e. in an open area and without any obstacles between the car and the companion.

NOTE: If the vehicle is located outside of America, this is the only possible condition.

B: More than 6 months have passed without a subscription

There is a 6-month free broadcast period on channel 184 to test the system.

After this period, no channels can be received and an unsubscribed message is displayed.

C: Less than 6 months have passed without a subscription

The car can only receive channel 184, other channels will display an unsubscribed message.

D: Signed up for a family package

All channels are listened to, but adult channels will be blocked and messages about unsubscribing will be displayed for these channels.

E: Subscribed to the full package

All channels are available except for some paid channels. In this situation, for such channels, a message about the absence of a subscription will be displayed.

System check

Tune in to channel 184 (this is typically the default channel for all presets).

Select the direct channel input function by pressing the key "#".

This operation will send the audio signal to the speakers when the C, D or E condition is present.

If state B is present, you will need to subscribe.


1. Are other systems affected?

The most common symptom is audio loss from other infotainment equipment; a good indicator of MOST problems is the lack of display switching from the home screen.

If other systems are affected, check the electrical circuits of the infotainment equipment for loose or damaged electrical connectors or other damage. Refer to the electrical manual.

2. If only the satellite radio system is affected, remove the DTCs from the module using the prescribed diagnostic system or scanner.

Refer to the DTC index above.

Screen indication	Symptom	Possible reasons	Notes/Actions
No signal or Searching for a signal	No channels available	Antenna connections	Check for DTCs Check connections from module to antenna and from antenna to wiring harness. Repair if necessary.
No signal or Searching for a signal	No audio signal	MOST connection	Check for DTCs Check the operation of other audio system components. Check connections going to other MOST elements.
No subscription	No channels available	Free period expired	Perform the above checks.
Weather/Emergency	No audio signal or CD or other item	Another element of the audio system may be defective.	Check for DTCs Check the operation of other audio system components.

DTC	Name	Possible reason	Action
B1A5614	Antenna	Terrestrial radio antenna circuit - short to ground Antenna Circuit - High Impedance	Refer to the electrical manual and check the electrical circuit of the antenna. Check the coaxial cable and connectors for damage, etc. Repair if necessary.
B1A8911	Satellite antenna	Short circuit of the electrical circuit to ground. The SDARS module registered a ground for longer than expected, or registered a ground when another reading was expected. SDARS antenna cable - short to ground Internal malfunction of the SDARS module Internal SDARS Antenna Failure	Perform all diagnostic Pinpoint tests associated with this DTC using the manufacturer's approved diagnostic system. Refer to the electrical manuals and check the SDARS antenna cable for a short to ground. Install the SDARS antenna harness if necessary. An SDARS module is suspected, check and install a new SDARS module if necessary. An SDARS antenna is suspected, check and install a new SDARS antenna if necessary. Refer to the new module/assembly installation note at the top of the DTC Index.
B1A8912	Satellite antenna	Short circuit of the electrical circuit to + battery. The SDARS module registered the presence of an on-board power supply for a longer time than expected, or registered the presence of an on-board power supply when another indication was expected. SDARS antenna cable - short circuit to + battery Internal malfunction of the SDARS module Internal SDARS Antenna Failure	Perform all diagnostic Pinpoint tests associated with this DTC using the manufacturer's approved diagnostic system. Refer to electrical manuals and check SDARS antenna cable for short to battery. Install the SDARS antenna harness if necessary. An SDARS module is suspected, check and install a new SDARS module if necessary. An SDARS antenna is suspected, check and install a new SDARS antenna if necessary. Refer to the new module/assembly installation note at the top of the DTC Index.
B1A8913	Satellite antenna	Electrical circuit break. The SDARS module has detected an open circuit due to insufficient bias voltage, low electric current, no change in the state of the input signal in response to the output signal SDARS antenna cable open circuit Internal malfunction of the SDARS module Internal SDARS Antenna Failure	Perform all diagnostic Pinpoint tests associated with this DTC using the manufacturer's approved diagnostic system. Refer to the electrical manuals and check the SDARS antenna cable for an open. Install the SDARS antenna harness if necessary. An SDARS module is suspected, check and install a new SDARS module if necessary. An SDARS antenna is suspected, check and install a new SDARS antenna if necessary. Refer to the new module/assembly installation note at the top of the DTC Index.
U300004	control module	SDARS module. Internal system failure	An SDARS module is suspected, check and install a new SDARS module if necessary, refer to the new module/component installation note at the top of the DTC Index.
U30004A	control module	SDARS module. Wrong item installed Vehicle configuration mismatch	Using the manufacturer's approved diagnostic system, select the vehicle configuration main menu, vehicle configuration, display and/or modify vehicle configuration file data. Check for updates if necessary.
U300055	control module	SDARS module not configured Incorrect vehicle configuration file data received	Using the manufacturer's approved diagnostic system, select the vehicle configuration main menu, select the configuration menu for existing modules, and program the SDARS module.
B1A8902	Satellite antenna	General signal failure HD antenna coaxial cable - short to ground, to battery + or open HD tuner module internal fault AM/FM Diversity Amplifier Internal Fault	Perform all diagnostic Pinpoint tests associated with this DTC using the manufacturer's approved diagnostic system. Refer to the electrical diagrams and check HD coaxial antenna cable for short to ground, short to battery, or open circuit. If necessary, install an HD coaxial cable. An HD tuner module is suspected, check and install a new HD tuner module if necessary. An AM/FM diversity amplifier is suspected, check and install a new AM/FM antenna diversity amplifier if necessary. Refer to the new module/assembly installation note at the top of the DTC Index.
B1A8911	Satellite antenna	Short circuit of the electrical circuit to ground. The HD tuner module registered ground for longer than expected, or registered ground when another reading was expected. Short to ground of HD coaxial antenna cable HD tuner module internal fault AM/FM Diversity Amplifier Internal Fault	Perform all diagnostic Pinpoint tests associated with this DTC using the manufacturer's approved diagnostic system. Refer to the electrical manuals and check the HD coaxial antenna cable for a short to ground. If necessary, install an HD coaxial cable. An HD tuner module is suspected, check and install a new HD tuner module if necessary. An AM/FM diversity amplifier is suspected, check and install a new AM/FM antenna diversity amplifier if necessary. Refer to the new module/assembly installation note at the top of the DTC Index.
B1A8912	Satellite antenna	Short circuit of the electrical circuit to + battery. The HD tuner module has registered the presence of on-board power for longer than expected, or has registered the presence of on-board power when another reading was expected. Short circuit to battery + HD coaxial antenna cable HD tuner module internal fault AM/FM Diversity Amplifier Internal Fault	Perform all diagnostic Pinpoint tests associated with this DTC using the manufacturer's approved diagnostic system. Refer to the electrical manuals and check the HD coaxial antenna cable for a short to battery. If necessary, install an HD coaxial cable. An HD tuner module is suspected, check and install a new HD tuner module if necessary. An AM/FM diversity amplifier is suspected, check and install a new AM/FM antenna diversity amplifier if necessary. Refer to the new module/assembly installation note at the top of the DTC Index.
B1A8913	Satellite antenna	Electrical circuit break. The high definition tuner module detected an open circuit due to insufficient bias voltage, low electric current, no change in the state of the input signal in response to the output signal HD Coaxial Antenna Cable Open Circuit HD tuner module internal fault AM/FM Diversity Amplifier Internal Fault	Perform all diagnostic Pinpoint tests associated with this DTC using the manufacturer's approved diagnostic system. Refer to the electrical manuals and check the HD coaxial antenna cable for an open. If necessary, install an HD coaxial cable. An HD tuner module is suspected, check and install a new HD tuner module if necessary. An AM/FM diversity amplifier is suspected, check and install a new AM/FM antenna diversity amplifier if necessary. Refer to the new module/assembly installation note at the top of the DTC Index.
U200D14	Output power of control module A	Short to ground or open Antenna diversity amplifier power circuit - short to ground, open HD tuner module internal fault AM/FM Diversity Amplifier Internal Fault	Perform all diagnostic Pinpoint tests associated with this DTC using the manufacturer's approved diagnostic system. Refer to your electrical manuals and check the antenna diversity amplifier power supply circuit for a short to ground or open circuit. Repair if necessary. An HD tuner module is suspected, check and install a new HD tuner module if necessary. An AM/FM diversity amplifier is suspected, check and install a new AM/FM antenna diversity amplifier if necessary. Refer to the new module/assembly installation note at the top of the DTC Index.
U300004	control module	High definition tuner module. Internal system failure	An HD tuner module is suspected, check and install a new HD tuner module if necessary, refer to the new module/component installation note at the top of the DTC Index.
U30004A	control module	High definition tuner module. Wrong item installed Vehicle configuration mismatch	Using the manufacturer's approved diagnostic system, select the vehicle configuration main menu, vehicle configuration, display and/or modify vehicle configuration file data. Check for updates if necessary.
U300055	control module	HD tuner module not configured Incorrect vehicle configuration file data received	Using the manufacturer's approved diagnostic system, select the vehicle configuration main menu, select the configuration menu for existing modules, and program the high definition tuner module.
U300087	control module	No message. The high definition tuner module did not receive one or more expected messages. Incorrect local configuration file Local configuration file parameters are missing, out of range, or have an incorrect checksum HD tuner module internal fault	Using the manufacturer's approved diagnostic system, select the vehicle configuration main menu, select the new module configuration menu, and program the high definition tuner module. Refer to the new module/assembly installation note at the top of the DTC Index.
U300098	control module	High definition tuner module element or system overheating HD tuner module internal fault	Check the high-definition tuner module and its installation location for reasons for the elevated temperature, and repair if necessary. An HD tuner module is suspected, check and install a new HD tuner module if necessary. Refer to the new module/assembly installation note at the top of the DTC Index.