High Definition Radio Module (HDR)

NOTE: If a control module or 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 program is in operation, before the replacement of a 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 (DMM) accurate to three decimal places, and with an up-to-date calibration certificate. When testing resistance always take the resistance of the DMM 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 DTCs 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.

Description And Operation

For a detailed description of the cellular phone system, refer to the relevant Description and Operation . Refer to Audio System .

DIGITAL AUDIO CONTROL MODULE C (DACMC)

DTC	Description	Possible Cause	Action
B1A56-02	Antenna - general signal failure	Antenna general signal failure	Refer to the electrical guides and check the IBOC radio module circuit and the antenna for short to power, open circuit, high resistance. Clear the diagnostic trouble code and retest. If the diagnostic trouble code persists, check and install a new IBOC radio module, as required. Refer to the warranty policy and procedures manual, or determine if any prior approval program is in operation, prior to the installation of a new module
B1A56-11	Antenna - circuit short to ground	IBOC radio module or antenna circuit short to ground	Refer to the electrical guides and check the IBOC radio module circuit and the antenna for short circuit to ground
B1A56-12	Antenna - circuit short to battery	IBOC radio module or antenna circuit short to power	Refer to the electrical guides and check the IBOC radio module circuit and the antenna for short circuit to power
B1A56-13	Antenna - circuit open	IBOC radio module or antenna circuit open circuit	Refer to the electrical guides and check the IBOC radio module circuit and the antenna for open circuit
U200D-14	Control Module Output Power A - circuit short to ground or open	IBOC radio module power supply circuit short to ground or open circuit	Refer to the electrical guides and check the IBOC radio module diversity power circuit for short to ground, open circuit
U3000-04	Control Module - system internal failures	IBOC radio module internal failure	Renew the IBOC radio module
U3000-4A	Control Module - incorrect component installed	IBOC radio module internal incorrect component installed - The module has been installed to a vehicle not configured to accept it	Using the manufacturer approved diagnostic system select the vehicle configuration main menu, select configure existing modules menu and program the module
U3000-55	Control Module - not configured	IBOC radio module not configured correctly	Using the manufacturer approved diagnostic system select the vehicle configuration main menu, select configure existing modules menu and program the module
U3000-87	Control Module - missing message	Missing message	Using the manufacturer approved diagnostic system select the vehicle configuration main menu, select configure existing modules menu and program the module
U3000-98	Control Module - component or system over temperature	IBOC radio module component or system over temperature	Consider moving the IBOC radio module to prevent unit overheating. Cool the vehicle interior down by ensuring it is in the shade and have the A/C on cool. When cool, clear the diagnostic trouble code and retest
U3003-62	Battery Voltage - signal compare failure	Mismatch in battery voltage of 2 volts or more for longer than 1 minute, between the measured battery voltage at the IBOC radio module and the battery voltage signal sent from the rear junction box	Refer to the electrical guides and check that power supply voltage at IBOC radio module and rear junction box is not different by more than 2 volts. Rectify as required