Audio Amplifier Module (AAM) fault code (Freelander 2)

Audio amplifier module

NOTE: If a module or component failure is suspected and the vehicle remains under manufacturer's warranty, refer to the Warranty Guide (Section B1.2) or determine if there is a previously approved special program in effect before replacing the component.

NOTE: Generic scan tools may not be able to read the codes listed or may only be able to 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 fault (the last 2 digits provide additional information readable by the manufacturer-approved diagnostic system).

NOTE: When performing voltage or resistance tests, always use a digital multimeter (DMM) with three decimal places of accuracy and a valid calibration certificate. When testing resistance, be sure to include the resistance of the DMM leads.

NOTE: Before starting diagnostic programs using fault location tests, check and correct basic faults.

NOTE: Inspect the connectors for signs of water ingress and their pins for damage and/or corrosion.

NOTE: If DTCs are set and the fault is not present after performing the troubleshooting tests, an intermittent problem may be the cause. Be sure to check for loose connections and corroded terminals.

The article is based on information from the website: www.lrman.ru

Description and operation

For a detailed description of the audio amplifier system, see the relevant section "Description and operation" of the workshop manual. For additional information, refer to the chapter: Audio system (415-01 Infotainment system, Description and operation).

DTC	Description	Possible reason	Action
B1A01-11	Speaker #1	Front Left Tweeter Circuit Short to Ground	Using the electrical diagrams, check the front left tweeter speaker circuit for a short to ground
B1A01-12	Speaker #1	Electrical circuit of the front left high-frequency speaker: short circuit to the power supply circuit	Using the electrical diagrams, check the front left tweeter speaker circuit for a short to power
B1A01-13	Speaker #1	Front Left Tweeter Circuit: Open Circuit	Using the electrical diagrams, check the front left tweeter circuit for an open
B1A01-1A	Speaker #1	Electrical circuit of the front left high-frequency speaker: resistance below the threshold value	Using the electrical diagrams, check the front left tweeter circuit for extraneous load from other speaker circuits
B1A01-49	Speaker #1	Internal failure of electronic equipment	Install a new module, see the new module/component installation note at the beginning of the DTC index
B1A02-11	Speaker #2	Front Right Tweeter Circuit Short to Ground	Using the electrical circuit diagrams, check the front right tweeter speaker circuit for a short to ground
B1A02-12	Speaker #2	Electrical circuit of the front right high-frequency speaker: short circuit to the power supply circuit	Using the electrical diagrams, check the front right tweeter speaker circuit for a short to power
B1A02-13	Speaker #2	Front Right Tweeter Circuit: Open Circuit	Using the electrical diagrams, check the front right tweeter circuit for an open
B1A02-1A	Speaker #2	Electrical circuit of the front right high-frequency speaker: resistance below the threshold value	Using the electrical diagrams, check the front right tweeter circuit for extraneous load from other speaker circuits
B1A02-49	Speaker #2	Internal failure of electronic equipment	Install a new module, see the new module/component installation note at the beginning of the DTC index
B1A03-11	Speaker #3	Front Left Woofer Circuit Short to Ground	Using the electrical diagrams, check the front left subwoofer circuit for a short to ground
B1A03-12	Speaker #3	Electrical circuit of the front left woofer: short circuit to the power supply circuit	Using the electrical diagrams, check the front left subwoofer circuit for a short to power
B1A03-13	Speaker #3	Front Left Woofer Circuit: Open Circuit	Using the electrical diagrams, check the front left subwoofer circuit for an open
B1A03-1A	Speaker #3	Front left subwoofer circuit: resistance below threshold	Using the electrical diagrams, check the front left subwoofer circuit for extraneous load from other speaker circuits
B1A03-49	Speaker #3	Internal failure of electronic equipment	Install a new module, see the new module/component installation note at the beginning of the DTC index
B1A04-11	Speaker #4	Front Right Subwoofer Circuit Short to Ground	Using the electrical circuit diagrams, check the front right subwoofer circuit for a short to ground
B1A04-12	Speaker #4	Electrical circuit of the front right woofer: short circuit to the power supply circuit	Using the electrical diagrams, check the front right subwoofer circuit for a short to power
B1A04-13	Speaker #4	Front Right Woofer Circuit: Open Circuit	Using the electrical diagrams, check the front right subwoofer circuit for an open
B1A04-1A	Speaker #4	Electrical circuit of the front right woofer: resistance below the threshold value	Using the electrical diagrams, check the front right subwoofer circuit for extraneous load from other speaker circuits
B1A04-49	Speaker #4	Internal failure of electronic equipment	Install a new module, see the new module/component installation note at the beginning of the DTC index
B1A05-11	Speaker #5	Rear Left Speaker Circuit Short to Ground	Using the electrical diagrams, check the rear left speaker circuit for a short to ground
B1A05-12	Speaker #5	Rear left speaker circuit: short to power	Using the electrical diagrams, check the rear left speaker circuit for a short to power
B1A05-13	Speaker #5	Rear Left Speaker Circuit: Open Circuit	Using the electrical diagrams, check the rear left speaker circuit for an open
B1A05-1A	Speaker #5	Rear left speaker circuit: resistance below threshold	Using the electrical diagrams, check the rear left speaker circuit for extraneous load from other speaker circuits
B1A05-49	Speaker #5	Internal failure of electronic equipment	Install a new module, see the new module/component installation note at the beginning of the DTC index
B1A06-11	Speaker #6	Rear Right Speaker Circuit Short to Ground	Using the electrical diagrams, check the rear right speaker circuit for a short to ground
B1A06-12	Speaker #6	Rear Right Speaker Circuit Short to Power	Using the electrical diagrams, check the rear right speaker circuit for a short to power
B1A06-13	Speaker #6	Rear Right Speaker Circuit: Open Circuit	Using the electrical diagrams, check the rear right speaker circuit for an open circuit
B1A06-1A	Speaker #6	Rear right speaker circuit: resistance below threshold	Using the electrical diagrams, check the rear right speaker circuit for extraneous load from other speaker circuits
B1A06-49	Speaker #6	Internal failure of electronic equipment	Install a new module, see the new module/component installation note at the beginning of the DTC index
B1A07-11	Speaker #7	Rear Left Surround Speaker Circuit Short to Ground	Using the electrical diagrams, check the rear left surround speaker circuit for a short to ground
B1A07-12	Speaker #7	Surround Rear Left Speaker Circuit Short to Power	Using the electrical diagrams, check the rear left surround speaker circuit for a short to power
B1A07-13	Speaker #7	Rear Left Surround Speaker Circuit: Open Circuit	Using the electrical diagrams, check the rear left surround speaker circuit for an open
B1A07-1A	Speaker #7	Surround Rear Left Speaker Circuit: Resistance Below Threshold	Using the electrical diagrams, check the rear left surround speaker circuit for any extraneous load from other speaker circuits
B1A07-49	Speaker #7	Internal failure of electronic equipment	Install a new module, see the new module/component installation note at the beginning of the DTC index
B1A08-11	Speaker #8	Rear Right Surround Speaker Circuit Short to Ground	Using the electrical diagrams, check the rear right surround speaker circuit for a short to ground
B1A08-12	Speaker #8	Rear Right Surround Speaker Circuit Short to Power	Using the electrical diagrams, check the rear right surround speaker circuit for a short to power
B1A08-13	Speaker #8	Rear Right Surround Speaker Circuit: Open Circuit	Using the electrical diagrams, check the rear right surround speaker circuit for an open
B1A08-1A	Speaker #8	Rear Right Surround Speaker Circuit: Resistance Below Threshold	Using the electrical diagrams, check the rear right surround speaker circuit for any extraneous load from other speaker circuits
B1A08-49	Speaker #8	Internal failure of electronic equipment	Install a new module, see the new module/component installation note at the beginning of the DTC index
B1A09-11	Speaker #9	Center Speaker Circuit: Short to Ground	Using the electrical diagrams, check the center speaker circuit for a short to ground
B1A09-12	Speaker #9	Center speaker circuit: short circuit to power supply	Using the electrical diagrams, check the center speaker circuit for a short to power
B1A09-13	Speaker #9	Center Speaker Circuit: Open Circuit	Using the electrical diagrams, check the center speaker circuit for an open circuit
B1A09-1A	Speaker #9	Center speaker circuit: resistance below threshold	Using the electrical diagrams, check the center speaker circuit for extraneous load from other speaker circuits
B1A09-49	Speaker #9	Internal failure of electronic equipment	Install a new module, see the new module/component installation note at the beginning of the DTC index
B1A10-11	Speaker #10	Left subwoofer circuit short to ground	Using the electrical diagrams, check the left subwoofer speaker circuit for a short to ground
B1A10-12	Speaker #10	Left subwoofer electrical circuit: short circuit to power supply	Using the electrical diagrams, check the left subwoofer speaker circuit for a short to power
B1A10-13	Speaker #10	Left Subwoofer Electrical Circuit: Open Circuit	Using the electrical diagrams, check the left subwoofer speaker circuit for an open circuit
B1A10-1A	Speaker #10	Left subwoofer circuit: resistance below threshold	Using the electrical diagrams, check the left subwoofer speaker circuit for any extraneous load from other speaker circuits
B1A10-49	Speaker #10	Internal failure of electronic equipment	Install a new module, see the new module/component installation note at the beginning of the DTC index
B1A11-11	Speaker #11	Right subwoofer circuit: short to ground	Using the electrical diagrams, check the right subwoofer speaker circuit for a short to ground
B1A11-12	Speaker #11	Right subwoofer electrical circuit: short circuit to power supply	Using the electrical diagrams, check the right subwoofer speaker circuit for a short to power
B1A11-13	Speaker #11	Right Subwoofer Electrical Circuit: Open Circuit	Using the electrical diagrams, check the right subwoofer speaker circuit for an open circuit
B1A11-1A	Speaker #11	Right subwoofer circuit: resistance below threshold	Using the electrical diagrams, check the right subwoofer speaker circuit for extraneous load from other speaker circuits
B1A11-49	Speaker #11	Internal failure of electronic equipment	Install a new module, see the new module/component installation note at the beginning of the DTC index
B1D84-11	Headphone Panel 1	Left or right headphone panel signal circuit 1: short to ground	Using the electrical diagrams, check the left or right signal circuit of the headphone panel 1 for a short to ground
B1D84-13	Headphone Panel 1	Left or right signal circuit of headphone panel 1: open circuit	Using the electrical diagrams, check the left or right signal circuit of the headphone panel 1 for an open circuit
B1D84-23	Headphone Panel 1	Headphone Panel Control Line Circuit 1: Signal Stuck at Low Voltage	Using the electrical diagrams, check the control line of the headphone panel 1 for a short to ground. Check if the switch/button is sticking
B1D85-11	Headphone Panel 2	Left or right headphone panel 2 signal circuit: short to ground	Using the electrical diagrams, check the left or right signal circuit of the headphone panel 2 for a short to ground
B1D85-13	Headphone Panel 2	Left or right signal circuit of headphone panel 2: open circuit	Using the electrical diagrams, check the left or right signal circuit of the headphone panel 2 for an open circuit
B1D85-23	Headphone Panel 2	Headphone Panel Control Line Circuit 2: Signal Stuck at Low Voltage	Using the electrical diagrams, check the control line of the headphone panel 2 for a short to ground. Check if the switch/button is sticking
B1D86-11	Headphone Panel 3	Left or right headphone panel signal circuit 3: short to ground	This vehicle has only two headphone panels. If this DTC is logged, check/correct the vehicle configuration file to specify only two panels using the manufacturer approved diagnostic system
B1D86-13	Headphone Panel 3	Left or right signal circuit of headphone panel 3: open circuit	This vehicle has only two headphone panels. If this DTC is logged, check/correct the vehicle configuration file to specify only two panels using the manufacturer approved diagnostic system
B1D86-23	Headphone Panel 3	Headphone Panel Control Line Circuit 3: Signal Stuck at Low Voltage	This vehicle has only two headphone panels. If this DTC is logged, check/correct the vehicle configuration file to specify only two panels using the manufacturer approved diagnostic system
B1D87-11	Headphone Panel 4	Left or right headphone panel signal circuit 4: short to ground	This vehicle has only two headphone panels. If this DTC is logged, check/correct the vehicle configuration file to specify only two panels using the manufacturer approved diagnostic system
B1D87-13	Headphone Panel 4	Left or right signal circuit of headphone panel 4: open circuit	This vehicle has only two headphone panels. If this DTC is logged, check/correct the vehicle configuration file to specify only two panels using the manufacturer approved diagnostic system
B1D87-23	Headphone Panel 4	Headphone Panel Control Line Circuit 4: Signal Stuck at Low Voltage	This vehicle has only two headphone panels. If this DTC is logged, check/correct the vehicle configuration file to specify only two panels using the manufacturer approved diagnostic system
U3000-05	Control unit: system programming errors	Software incompatibility: The local configuration file version is different from the expected one	Reconfigure the audio amplifier as an existing control unit using the manufacturer's recommended diagnostic system
U3000-42	Control unit: general memory failure	General memory failure	Reset the audio amplifier module to the existing control module using the manufacturer approved diagnostic system. Clear the DTC, cycle the ignition switch, then read the DTCs. If the DTC returns, the audio amplifier module may be faulty - install a new module. See the note on installing a new module/component at the beginning of the DTC index
U3000-44	Control unit: data memory error	Data memory failure	Reset the audio amplifier module to the existing control module using the manufacturer approved diagnostic system. Clear the DTC, cycle the ignition switch, then read the DTCs. If the DTC returns, the audio amplifier module may be faulty - install a new module. See the note on installing a new module/component at the beginning of the DTC index
U3000-55	Control unit	Incorrect vehicle configuration data received	Check/update the vehicle configuration file using a manufacturer approved diagnostic system
U3000-87	Control unit	Missing message	Check the central junction box for DTCs and refer to the DTC index. For additional information, refer to the chapter: Communication Network (418-00 Module Communication Network, Diagnosis and Testing). Check the infotainment module for DTCs for the vehicle configuration file and the MOST network and refer to the appropriate DTC index. Perform MOST/CAN network tests using the manufacturer approved diagnostic system
U3003-16	Battery voltage	Circuit voltage below limit	Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system
U3003-17	Battery voltage	Circuit voltage is above limit	Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system