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

Control unit for adaptive front lighting system

NOTE: If a unit or component is likely to fail and the vehicle is still under manufacturer's warranty, refer to the warranty manual before replacing the component (section B1.2) or determine if there is any previously approved special program in operation.

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

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

NOTE: Before starting diagnostic programs using troubleshooting tests, check and correct major problems.

NOTE: Inspect the connectors for signs of water intrusion and their pins for damage and (or) traces of corrosion.

NOTE: If DTCs are logged and there is no problem after performing troubleshooting tests, an intermittent problem may be the cause. Be sure to check for loose connections and corroded contacts.

For more information, see the chapter: Outdoor Lighting (417-01 Outdoor lighting, Description and principle of operation).

DTC	Description	Possible reason	Action
B1041-04	Tilt control unit: internal system malfunctions	Internal unit failure	Possible internal malfunction of the control unit for the adaptive front lighting system (AFS). Replace if necessary (see new unit/component installation note at the beginning of the DTC index).
B1041-54	Tilt Control Unit: No Calibration	NOTE: Typically, this DTC is set after a new unit is installed. Tilt correction sensor calibration procedure failed.	NOTE: The sensor calibration procedure must be performed with the vehicle unloaded. Calibrate the headlight beam leveling sensors using the manufacturer approved diagnostic system. Follow the procedure "Calibration of the headlight control unit" from the menu "Block programming and configuration - installation and configuration - lighting".
B1087-83	Tire "A" LIN: Wrong signal protection calculation value	LIN bus circuit failure. No LIN bus communication. EMC interference on the LIN bus.	NOTE: This circuit uses a shielded cable. Refer to the electrical diagrams and check the LIN bus circuit for damage to the wiring harness.
B1087-86	Chain "A" LIN buses: invalid signal	LIN bus circuit failure. No LIN bus communication. EMC interference on the LIN bus.	NOTE: This circuit uses a shielded cable. Refer to the electrical diagrams and check the LIN bus circuit for damage to the wiring harness.
B1087-88	Chain "A" LIN buses: bus off	LIN bus circuit failure. No LIN bus communication.	NOTE: This circuit uses a shielded cable. Refer to the electrical diagrams and check the LIN bus circuit for damage to the wiring harness.
B10AE-11	Headlight range control motor: short circuit to ground	Headlight range adjustment motor control circuit short to ground	Refer to the electrical circuit diagrams and check headlamp leveling motor control circuit for short to ground.
B10AE-12	Headlight range control motor - short circuit to battery	Headlight beam leveling motor control circuit short circuit to power	Refer to electrical circuit diagrams and check headlamp leveling motor control circuit for short to power
B10AE-64	The electric drive of correction of position of headlights: an implausible 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 headlight connector, clear the DTC and retest. If the DTC is cleared, there may be a problem with the adaptive front lighting system control module (AFS) or circuits from the disconnected side. If the DTC is not cleared, connect one headlight and disconnect the other, clear the DTC and retest. If the DTC is cleared, there may be a problem with the adaptive front lighting system control module (AFS) or circuits from the disconnected side. If the DTC persists, the common circuits may be faulty. See wiring diagrams for necessary checks.
B1A59-11	5V sensor supply: short to ground	Headlight range control sensor 5V supply circuit short to ground	Refer to the electrical circuit diagrams and check the 5V power supply circuit of the headlight range adjustment sensor for a short to ground.
B1A59-12	5V Sensor Power: General Electrical Fault	Headlight range control sensor 5V supply circuit short circuit to power	Refer to the electrical circuit diagrams and check the 5V power supply circuit of the headlight range control sensor for a short to power.
B1D64-01	Left headlight swivel motor - general electrical fault	Headlight motor internal fault. Headlight circuit internal fault.	Using a manufacturer-approved diagnostic system, run an on-demand self-diagnosis and inspect the headlight for driving errors (compare with other headlight), signs of internal damage or displacement (displaced ball joints). Refer to electrical circuit diagrams and check for fault in circuit between adaptive front lighting control module (AFS) and electric headlights. If there are no mechanical or circuit problems, an internal headlight failure is possible. Replace it if necessary. See the new unit/component installation note at the beginning of the DTC index
B1D64-87	Left headlight slewing motor: message missing	Missing message	Using a manufacturer-approved diagnostic system, run an on-demand self-diagnosis and inspect the headlight for driving errors (compare with other headlight), signs of internal damage or displacement (displaced ball joints). Refer to electrical circuit diagrams and check for fault in circuit between adaptive front lighting control module (AFS) and electric headlights. If there are no mechanical or circuit problems, an internal headlight failure is possible. Replace it if necessary. See the new unit/component installation note at the beginning of the DTC index
B1D65-01	Right headlight swivel motor - general electrical fault	Headlight motor internal fault. Headlight circuit internal fault.	Using a manufacturer-approved diagnostic system, run an on-demand self-diagnosis and inspect the headlight for driving errors (compare with other headlight), signs of internal damage or displacement (displaced ball joints). Refer to electrical circuit diagrams and check for fault in circuit between adaptive front lighting control module (AFS) and electric headlights. If there are no mechanical or circuit problems, an internal headlight failure is possible. Replace it if necessary. See the new unit/component installation note at the beginning of the DTC index
B1D65-87	Right headlight swivel motor: message missing	Missing message	Using a manufacturer-approved diagnostic system, run an on-demand self-diagnosis and inspect the headlight for driving errors (compare with other headlight), signs of internal damage or displacement (displaced ball joints). Refer to electrical circuit diagrams and check for fault in circuit between adaptive front lighting control module (AFS) and electric headlights. If there are no mechanical or circuit problems, an internal headlight failure is possible. Replace it if necessary. See the new unit/component installation note at the beginning of the DTC index
B1D68-00	Left headlight turn motor feedback sensor: no subtype information	Headlight sensor internal fault. Headlight circuit internal fault.	Using a manufacturer-approved diagnostic system, run an on-demand self-diagnosis and inspect the headlight for driving errors (compare with other headlight), signs of internal damage or displacement (displaced ball joints). Refer to electrical circuit diagrams and check for fault in circuit between adaptive front lighting control module (AFS) and a feedback sensor for the electric drive of the turn of the headlights. If there are no mechanical or circuit problems, an internal headlight failure is possible. Replace it if necessary. See the new unit/component installation note at the beginning of the DTC index
B1D69-00	Right headlight turn motor feedback sensor: no subtype information	Headlight sensor internal fault. Headlight circuit internal fault.	Using a manufacturer-approved diagnostic system, run an on-demand self-diagnosis and inspect the headlight for driving errors (compare with other headlight), signs of internal damage or displacement (displaced ball joints). Refer to electrical circuit diagrams and check for fault in circuit between adaptive front lighting control module (AFS) and a feedback sensor for the electric drive of the turn of the headlights. If there are no mechanical or circuit problems, an internal headlight failure is possible. Replace it if necessary. See the new unit/component installation note at the beginning of the DTC index
C1A03-12	Front Left Suspension Height Sensor Circuit Short to Battery Positive	Left front height sensor - short circuit to power	Refer to electrical circuit diagrams and check front left height sensor circuit for short to power
C1A03-14	Left front height sensor short to ground or open circuit	Left front height sensor circuit short to ground or open circuit	Refer to electrical circuit diagrams and check front left height sensor circuit for short to ground and open circuit
C1A05-12	Rear Left Suspension Height Sensor Circuit Short to Battery Positive	Left front height sensor - short circuit to power	Refer to electrical circuit diagrams and check rear left height sensor circuit for short to power
C1A05-14	Left rear height sensor short to ground or open circuit	Left rear height sensor circuit short to ground or open circuit	Refer to electrical circuit diagrams and check rear left height sensor circuit for short to ground and open
U0001-88	High speed CAN bus: bus disabled	CAN bus disabled. CAN bus circuit failure.	Check for related DTCs for other units. Perform a CAN network integrity check using the manufacturer approved diagnostic system.
U0101-00	No communication with transmission control unit (TCM): no subtype information	Loss of communication with the transmission control unit. CAN network failure.	Check stored DTCs related to the transmission control module. Perform a CAN network integrity check using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check CAN network between adaptive front lighting control unit (AFS) and gearbox control unit
U0121-00	Loss of communication with the anti-lock brake system control unit (ABS): no subtype information	Loss of communication with the anti-lock braking system unit. CAN network failure.	Check the anti-lock brake system unit for any DTCs stored. Perform a CAN network integrity check using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check CAN network between adaptive front lighting control unit (AFS) and anti-lock braking system module
U0126-00	No communication with steering angle sensor: No sub type information	Lost communication with steering angle sensor unit. CAN network failure.	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 CAN network between adaptive front lighting control unit (AFS) and steering angle sensor unit
U0140-00	No communication with body control module: No subtype information	Loss of communication with the central junction box. CAN network failure.	Check the central junction box for DTCs. Perform a CAN network integrity check using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check CAN network between adaptive front lighting control unit (AFS) and central junction box
U0300-00	Internal control unit software incompatibility: No subtype information	Data in vehicle configuration file (CCF) not compatible with adaptive front lighting control unit (AFS)	NOTE: Required vehicle configuration file parameters (CCF): (Vehicle type) (headlight type) (Gearbox type) And (Daytime marker lights) Update the car configuration file (CCF), using the manufacturer approved diagnostic system. Clear the DTCs and recheck. If the DTC is still set, the adaptive front lighting control module may be faulty (AFS) - see the note on installing a new unit at the top of the DTC index
U0402-00	Invalid data received from transmission control unit: no subtype information	Incorrect data received from the transmission control unit. Transmission element failure.	Check stored DTCs related to the transmission control module. Perform a CAN network integrity check using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check CAN network between adaptive front lighting control unit (AFS) and gearbox control unit
U0415-00	Invalid data received from anti-lock brake control unit (ABS): no subtype information	Invalid data received from anti-lock braking system module. Anti-Lock Braking System Module Component Malfunction	Check the anti-lock brake system unit for any DTCs stored. Perform a CAN network integrity check using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check CAN network between adaptive front lighting control unit (AFS) and anti-lock braking system module
U0422-00	Invalid data received from body control module: no subtype information	An invalid signal has been received from the central junction box. Malfunction of the central junction box.	Check the central junction box for DTCs. Perform a CAN network integrity check using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check CAN network between adaptive front lighting control unit (AFS) and central junction box
U0428-00	Invalid data received from steering angle sensor unit: No sub type information	Invalid data received from steering angle sensor unit. Steering 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 CAN network between adaptive front lighting control unit (AFS) and steering angle sensor
U2100-00	Primary configuration not configured: No subtype information	Vehicle configuration file data (CCF) not received in full.	NOTE: Required vehicle configuration file parameters (CCF): (Vehicle type) (headlight type) (Gearbox type) And (Daytime marker lights). Update the car configuration file (CCF), using the manufacturer approved diagnostic system. Clear the DTCs and recheck. If the DTC is still set, the adaptive front lighting control module may be faulty (AFS) - see the note on installing a new unit at the top of the DTC index
U2101-00	Incompatible control unit configuration: No subtype information	Data in vehicle configuration file (CCF) not compatible with adaptive front lighting control unit (AFS)	Check that the adaptive front lighting control unit is (AFS) installed according to vehicle specification. Install the original unit or replace if necessary. See the new unit/component installation note at the beginning of the DTC index
U3003-16	Battery voltage: voltage in the electrical circuit below the threshold	Unit power supply voltage below 9 volts for more than 1000 milliseconds	The battery or charging system may be faulty. Check the condition and charge of the battery. Check the car's charging system. Refer to the relevant section of the repair manual. Clear the DTC, turn the ignition off and on again; if the DTC re-logs, refer to the electrical circuit diagrams and check the power and ground circuits for the adaptive front lighting control module (AFS)
U3003-17	Battery voltage: voltage in the electrical circuit above the threshold	Unit power supply voltage exceeds 16 volts for more than 1000 milliseconds	The battery may be defective. Check the condition and charge of the battery. Check the car's charging system. Refer to the relevant section of the repair manual.
U3003-62	Battery voltage: signal comparison error	Battery voltage mismatch of 2 V or more between the signal of the central radio transmitter (via CAN bus) and the control unit for the adaptive front lighting system (AFS)	Check for stored DTCs for other units. Refer to the electrical circuit diagrams and check the power and ground circuits of the adaptive front lighting control unit (AFS)