Headlamp Control Module (HCM) Trouble Code (Freelander 2)

Adaptive front lighting control unit

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.

(The full version is available on the website: www.LRman.ru)

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.

For more information, refer to the chapter: Outdoor Lighting (417-01 Outdoor Lighting, Description and Operating Principle).

DTC	Description	Possible reason	Action
B1041-04	Tilt Control Unit: Internal System Faults	Internal unit failure	Possible internal malfunction of the adaptive front-lighting system (AFS) control unit. Replace if necessary (see note on installing a new unit/component at the beginning of the DTC index).
B1041-54	Tilt control unit: no calibration	NOTE: Typically, this DTC is set after a new module is installed. The tilt correction sensor calibration procedure has not been performed.	NOTE: It is necessary to perform the sensor calibration procedure with the vehicle unloaded. Calibrate the headlamp levelling sensors using the manufacturer's approved diagnostic system. Perform the "Headlamp Control Unit Calibration" procedure from the "Unit Programming and Setup - Installation and Setup - Lighting" menu.
B1087-83	LIN Bus "A": Incorrect signal protection calculation value	LIN bus circuit failure. There is no communication via the LIN bus. EMC interference on the LIN bus.	NOTE: This circuit uses shielded cable. Refer to the electrical diagrams and check the LIN bus circuit for harness damage.
B1087-86	LIN Bus Circuit "A": Invalid Signal	LIN bus circuit failure. There is no communication via the LIN bus. EMC interference on the LIN bus.	NOTE: This circuit uses shielded cable. Refer to the electrical diagrams and check the LIN bus circuit for harness damage.
B1087-88	LIN Bus Circuit "A": Bus Off	LIN bus circuit failure. There is no communication via the LIN bus.	NOTE: This circuit uses shielded cable. Refer to the electrical diagrams and check the LIN bus circuit for harness damage.
B10AE-11	Headlight range adjustment actuator: short circuit to ground	Headlamp leveling motor control circuit: short to ground	Using the electrical diagrams, check the headlamp leveling actuator control circuit for a short to ground.
B10AE-12	Headlamp leveling actuator: short circuit to battery	Headlamp leveling motor control circuit: short circuit to power supply	Using the electrical diagrams, check the headlamp leveling actuator control circuit for a short to power circuit
B10AE-64	Electric headlight range control: invalid signal	Invalid signal (voltage out of range)	Refer to the electrical circuit diagrams and check the headlamp leveling motor control circuits for faults. Disconnect the headlamp connector, clear the DTC and retest. If the DTC is cleared, the adaptive front-lighting system (AFS) control unit or circuits on the disconnected side may be faulty. If the DTC is not cleared, connect one headlamp and disconnect the other, clear the DTC and retest. If the DTC is cleared, the adaptive front-lighting system (AFS) control unit or circuits on the disconnected side may be faulty. If the DTC is not cleared, the general circuits may be faulty. Refer to the electrical circuit diagrams to perform the necessary tests.
B1A59-11	5V Sensor Supply: Short to Ground	Headlamp Leveling Sensor 5V Power Supply Circuit Short to Ground	Using the electrical diagrams, check the 5V power supply circuit of the headlamp leveling sensor for a short to ground.
B1A59-12	Sensor Power 5V: General Electrical Fault	5 V power supply circuit of the sensor of the headlight tilt correction system: short circuit to the power supply circuit	Using the electrical diagrams, check the 5V power supply circuit of the headlamp leveling sensor for a short to power.
B1D64-01	Left headlight turn signal actuator: general electrical fault	Internal fault in headlight motor. Internal fault in headlight circuit.	Using the manufacturer approved diagnostic system, perform the on-demand self-diagnosis and inspect the headlamp for any movement errors (compare to another headlamp), signs of internal damage or misalignment (ball joints out of alignment). Using the electrical circuit diagrams, check for a fault in the circuit between the adaptive front-lighting system (AFS) control module and the headlamp swivel motor. If no mechanical or circuit faults are found, the headlamp may have an internal fault. Replace it if necessary. See the note on installing a new module/component at the beginning of the DTC index
B1D64-87	Left Headlight Turn Signal Electric: No Message	Missing message	Using the manufacturer approved diagnostic system, perform the on-demand self-diagnosis and inspect the headlamp for any movement errors (compare to another headlamp), signs of internal damage or misalignment (ball joints out of alignment). Using the electrical circuit diagrams, check for a fault in the circuit between the adaptive front-lighting system (AFS) control module and the headlamp swivel motor. If no mechanical or circuit faults are found, the headlamp may have an internal fault. Replace it if necessary. See the note on installing a new module/component at the beginning of the DTC index
B1D65-01	Right headlight turn signal actuator: general electrical fault	Internal fault in headlight motor. Internal fault in headlight circuit.	Using the manufacturer approved diagnostic system, perform the on-demand self-diagnosis and inspect the headlamp for any movement errors (compare to another headlamp), signs of internal damage or misalignment (ball joints out of alignment). Using the electrical circuit diagrams, check for a fault in the circuit between the adaptive front-lighting system (AFS) control module and the headlamp swivel motor. If no mechanical or circuit faults are found, the headlamp may have an internal fault. Replace it if necessary. See the note on installing a new module/component at the beginning of the DTC index
B1D65-87	Right headlight turn signal: message missing	Missing message	Using the manufacturer approved diagnostic system, perform the on-demand self-diagnosis and inspect the headlamp for any movement errors (compare to another headlamp), signs of internal damage or misalignment (ball joints out of alignment). Using the electrical circuit diagrams, check for a fault in the circuit between the adaptive front-lighting system (AFS) control module and the headlamp swivel motor. If no mechanical or circuit faults are found, the headlamp may have an internal fault. Replace it if necessary. See the note on installing a new module/component at the beginning of the DTC index
B1D68-00	Left Headlight Turn Signal Feedback Sensor: No subtype information	Internal fault in headlight sensor. Internal fault in headlight circuit.	Using the manufacturer approved diagnostic system, perform the on-demand self-diagnosis and inspect the headlamp for any movement errors (compare to another headlamp), signs of internal damage or misalignment (ball joints misaligned). Using the electrical circuit diagrams, check for a fault in the circuit between the adaptive front-lighting system (AFS) control module and the headlamp motor feedback sensor. If no mechanical or circuit faults are found, the headlamp may have an internal fault. Replace it if necessary. See the note on installing a new module/component at the beginning of the DTC index
B1D69-00	Right Headlight Turn Signal Feedback Sensor: No subtype information	Internal fault in headlight sensor. Internal fault in headlight circuit.	Using the manufacturer approved diagnostic system, perform the on-demand self-diagnosis and inspect the headlamp for any movement errors (compare to another headlamp), signs of internal damage or misalignment (ball joints misaligned). Using the electrical circuit diagrams, check for a fault in the circuit between the adaptive front-lighting system (AFS) control module and the headlamp motor feedback sensor. If no mechanical or circuit faults are found, the headlamp may have an internal fault. Replace it if necessary. See the note on installing a new module/component at the beginning of the DTC index
C1A03-12	Front left suspension height sensor circuit: short circuit to positive battery cell	Left Front Height Sensor: Short to Power	Using the electrical diagrams, check the front left height sensor circuit for a short to power
C1A03-14	Left Front Height Sensor: Short to Ground or Open Circuit	Left Front Height Sensor: Short to Ground or Open Circuit	Using the electrical circuit diagrams, check the front left height sensor circuit for a short to ground and an open circuit
C1A05-12	Rear left suspension height sensor circuit: short circuit to positive battery cell	Left Front Height Sensor: Short to Power	Using the electrical diagrams, check the rear left height sensor circuit for a short to power
C1A05-14	Left Rear Height Sensor: Short to Ground or Open Circuit	Left Rear Height Sensor: Short to Ground or Open Circuit	Using the electrical circuit diagrams, check the rear left height sensor circuit for a short to ground and an open circuit
U0001-88	High Speed CAN Bus: Bus Disabled	The CAN bus is disabled. CAN bus circuit malfunction.	Check for related DTCs for other modules. Perform a CAN network integrity test using the manufacturer approved diagnostic system.
U0101-00	No communication with transmission control module (TCM): no subtype information	Lost communication with the gearbox control unit. CAN network malfunction.	Check for stored DTCs related to the transmission control unit. Perform a CAN network integrity check using the manufacturer approved diagnostic system. Referring to the electrical circuit diagrams, check the CAN network between the adaptive front-lighting system (AFS) control unit and the transmission control unit
U0121-00	Lost Communication with Anti-lock Brake System (ABS) Control Unit: No Subtype Information	Lost communication with the anti-lock braking system unit. CAN network malfunction.	Check the anti-lock brake system module for stored DTCs. Perform a CAN network integrity check using the manufacturer approved diagnostic system. Referring to the electrical circuit diagrams, check the CAN network between the adaptive front-lighting system (AFS) control module and the anti-lock brake system module
U0126-00	No connection with steering angle sensor: no subtype information	Lost communication with the steering angle sensor unit. CAN network malfunction.	Check the steering angle sensor for stored DTCs. Perform a CAN network integrity check using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check the CAN network between the adaptive front-lighting system (AFS) control unit and the steering angle sensor unit
U0140-00	No communication with body control unit: no subtype information	Lost connection with the central distribution box. CAN network malfunction.	Check the central junction box for DTCs. Perform a CAN network integrity check using the manufacturer approved diagnostic system. Referring to the electrical circuit diagrams, check the CAN network between the adaptive front-lighting system (AFS) control unit and the central junction box
U0300-00	Internal control unit software incompatibility: no subtype information	The data in the vehicle configuration file (CCF) is not compatible with the adaptive front-lighting system (AFS) control unit	NOTE: Required Vehicle Configuration File (CCF) parameters: (Vehicle Type)(Headlight Type)(Gearbox Type) and (Daytime Running Lights) Update the vehicle configuration file (CCF) using the manufacturer approved diagnostic system. Clear the DTCs and retest. If the DTC is still logged, the adaptive front-lighting system (AFS) control module may be faulty - see the note on installing a new module at the top of the DTC index
U0402-00	Invalid data received from gearbox control unit: no subtype information	Incorrect data received from the transmission control unit. Gearbox component failure.	Check for stored DTCs related to the transmission control unit. Perform a CAN network integrity check using the manufacturer approved diagnostic system. Referring to the electrical circuit diagrams, check the CAN network between the adaptive front-lighting system (AFS) control unit and the transmission control unit
U0415-00	Invalid data received from anti-lock brake system (ABS) control unit: no subtype information	Invalid data received from the anti-lock brake system module. Anti-lock Brake System Module: Component Malfunction	Check the anti-lock brake system module for stored DTCs. Perform a CAN network integrity check using the manufacturer approved diagnostic system. Referring to the electrical circuit diagrams, check the CAN network between the adaptive front-lighting system (AFS) control module and the anti-lock brake system module
U0422-00	Invalid data received from body control unit: no subtype information	Invalid signal received from central distribution box. Central distribution box malfunction.	Check the central junction box for DTCs. Perform a CAN network integrity check using the manufacturer approved diagnostic system. Referring to the electrical circuit diagrams, check the CAN network between the adaptive front-lighting system (AFS) control unit and the central junction box
U0428-00	Invalid data received from steering angle sensor module: no subtype information	Incorrect data received from the steering angle sensor unit. Steering wheel angle sensor module malfunction.	Check the steering angle sensor for stored DTCs. Perform a CAN network integrity check using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check the CAN network between the adaptive front-lighting system (AFS) control unit and the steering angle sensor
U2100-00	Primary configuration not configured: no subtype information	Vehicle Configuration File (CCF) data was not completely received.	NOTE: Required Vehicle Configuration File (CCF) parameters: (Vehicle Type)(Headlight Type)(Gearbox Type) and (Daytime Running Lights). Update the vehicle configuration file (CCF) using the manufacturer approved diagnostic system. Clear the DTCs and retest. If the DTC is still logged, the adaptive front-lighting system (AFS) control module may be faulty - see the note on installing a new module at the top of the DTC index
U2101-00	Incompatible control unit configuration: no subtype information	The data in the vehicle configuration file (CCF) is not compatible with the adaptive front-lighting system (AFS) control unit	Ensure that the adaptive front-lighting system (AFS) control module is installed to vehicle specification. Install the original module or replace if necessary. See the note on installing a new module/component at the beginning of the DTC index
U3003-16	Battery voltage: voltage in the electrical circuit is below the threshold value	The power supply voltage of the unit is below 9 volts for more than 1000 milliseconds	There may be a problem with the battery or charging system. Check the battery condition and charge. Check the vehicle charging system. Refer to the appropriate section of the repair manual. Clear the DTC, cycle the ignition; if the DTC is reset, use the electrical circuit diagrams to check the power and ground circuits of the adaptive front-lighting system (AFS) control module
U3003-17	Battery voltage: voltage in the electrical circuit is above the threshold value	The power supply voltage of the unit exceeds 16 volts for more than 1000 milliseconds	Possible battery failure. Check the battery condition and charge. Check the vehicle charging system. Refer to the appropriate section of the repair manual.
U3003-62	Battery Voltage: Signal Comparison Error	Battery voltage discrepancy of 2 V or more between the central radio transmitter signal (via CAN bus) and the adaptive front-lighting system (AFS) control unit	Check for stored DTCs for other modules. Refer to the electrical circuit diagrams and check the power and ground circuits of the adaptive front-lighting system (AFS) control module