Rear Differential Control Module (RDCM)

CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle.

NOTE:

Guided Diagnostics must be followed and the repair advised by the process completed. Failure to do so may result in the rejection of any warranty claim made.
If a control module or a component is at fault and the vehicle remains under manufacturer warranty, refer to the Warranty Policy and Procedures information, or determine if any prior approval program is in operation, prior to the installation of a new module/component.
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).
When performing voltage or resistance tests, always use a digital multimeter that has the resolution ability to view 3 decimal places. For example, on the 2 volts range can measure 1 mV or 2 K Ohm range can measure 1 Ohm. When testing resistance always take the resistance of the digital multimeter leads into account
Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
Inspect connectors for signs of water ingress, and pins for damage and/or corrosion.
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.
Check JLR claims submission system for open campaigns. Refer to the corresponding bulletins and SSMs which may be valid for the specific customer complaint and complete the recommendations as required.

The article below lists all Diagnostic Trouble Codes (DTCs) that could be set in the Rear Differential Control Module (RDCM). For additional diagnosis and testing information, refer to the relevant Diagnosis and Testing article in the repair information. For additional information, Refer to: REAR DRIVE AXLE AND DIFFERENTIAL

DTC	DESCRIPTION	POSSIBLE CAUSES	ACTION
P0562-16	System Voltage Low - Circuit voltage below threshold	Rear differential control module power or ground circuit open circuit, high resistance	Refer to the appropriate system wiring diagrams and check the rear differential control module power and ground circuits for open circuit, high resistance. Repair the wiring harness as necessary
P0563-17	System Voltage High - Circuit voltage above threshold	Battery/charging system fault	NOTE: This DTC may be induced by boost starting or battery charging. Using the Jaguar Land Rover approved diagnostic equipment, check datalogger signal - Main ECU Supply Voltage (0xD018). Refer to the relevant article of the repair information and check the battery and charging system. Rectify as necessary
P0607-49	Control Module Performance - Internal electronic failure	Differential locking motor circuit open circuit, high resistance Rear differential control module internal failure	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Refer to the appropriate system wiring diagrams and check the differential locking motor circuit for open circuit, high resistance. Repair the wiring harness or install a new differential locking motor as necessary Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test. If the fault persists, install a new rear differential control module
P062F-56	Internal Control Module EEPROM Error - Invalid/incomplete configuration	Rear differential clutch not calibrated	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Using the Jaguar Land Rover approved diagnostic equipment, perform routine - On Demand Self Test and cycle the ignition. If the fault persists, install a new rear differential control module
P080A-54	Clutch Position Not Learned - Missing calibration	Rear differential clutch not calibrated Rear differential control module or rear differential locking motor connector disconnected, connector pin backed out, connector pin corrosion Rear differential locking motor power circuit short circuit to ground, short circuit to power, open circuit, high resistance Rear differential locking motor internal failure Rear differential control module internal failure	NOTE: The rear differential control module performs a calibration routine every 1000 km. New electric differentials will perform calibrations more frequently during clutch bed-in. After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Using the Jaguar Land Rover approved diagnostic equipment, perform routine - On Demand Self Test and cycle the ignition Inspect the rear differential control module and rear differential locking motor connectors for signs of water ingress and pins for damage and/or corrosion If the fault persists, refer to the appropriate system wiring diagrams and check the rear differential control module circuit to the rear differential locking motor for short circuit to ground, short circuit to power, open circuit, high resistance. Repair circuit as necessary, clear DTCs and retest If the fault persists, check and install a new rear differential locking motor as necessary, clear the DTCs and retest If the fault persists, check and install a new rear differential control module
P0810-62	Clutch Position Control Error - Signal compare failure	NOTE: Circuit reference - MOTOR+ - Circuit reference - MOTOR- - Circuit reference - HALL_IN1 - Circuit reference - HALL_IN2 - Differential locking motor connector disconnected, connector pin backed out, connector pin corrosion Differential locking motor circuit short circuit to ground, short circuit to power, open circuit, high resistance Differential locking motor position sensor circuit short circuit to ground, short circuit to power, open circuit, high resistance Differential locking motor internal failure	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Using the Jaguar Land Rover approved diagnostic equipment, perform routine - On Demand Self Test and cycle the ignition Inspect the differential locking motor connectors for signs of water ingress and pins for damage and/or corrosion Refer to the appropriate system wiring diagrams and check the differential locking motor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary Refer to the appropriate system wiring diagrams and check the differential locking motor position sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary If the fault persists, install a new differential locking motor
P0C01-00	Drive Motor A Current High - No sub type information	NOTE: Circuit reference - MOTOR+ - Circuit reference - MOTOR- - Differential locking motor circuit short circuit to ground, short circuit to power Rear differential control module internal failure Differential locking motor internal failure	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Refer to the appropriate system wiring diagrams and check the differential locking motor circuit for short circuit to ground, short circuit to power. Repair the wiring harness as necessary Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test. If the fault persists, install a new rear differential control module Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test. If the fault persists, install a new differential locking motor
P0C05-00	Drive Motor A Phase U-V-W Circuit/Open - No sub type information	NOTE: Circuit reference - MOTOR+ - Circuit reference - MOTOR- - Differential locking motor connector disconnected, connector pin backed out, connector pin corrosion Differential locking motor circuit open circuit, high resistance Rear differential control module internal failure Differential locking motor internal failure	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Inspect the differential locking motor connectors for signs of water ingress and pins for damage and/or corrosion Refer to the appropriate system wiring diagrams and check the differential locking motor circuit for open circuit, high resistance. Repair the wiring harness as necessary Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test If the fault persists, install a new rear differential control module If the fault persists, install a new differential locking motor
P0C06-00	Drive Motor A Phase U-V-W Circuit Low - No sub type information	NOTE: Circuit reference - MOTOR+ - Circuit reference - MOTOR- - Differential locking motor connector disconnected, connector pin backed out, connector pin corrosion Differential locking motor circuit short circuit to ground Rear differential control module internal failure Differential locking motor internal failure	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Inspect the differential locking motor connectors for signs of water ingress and pins for damage and/or corrosion Refer to the appropriate system wiring diagrams and check the differential locking motor circuit for short circuit to ground. Repair the wiring harness as necessary Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test If the fault persists, install a new rear differential control module If the fault persists, install a new differential locking motor
P0C07-00	Drive Motor A Phase U-V-W Circuit High - No sub type information	NOTE: Circuit reference - MOTOR+ - Circuit reference - MOTOR- - Differential locking motor circuit short circuit to power Rear differential control module internal failure Differential locking motor internal failure	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Refer to the appropriate system wiring diagrams and check the differential locking motor circuit for short circuit to power. Repair the wiring harness as necessary Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test If the fault persists, install a new rear differential control module If the fault persists, install a new differential locking motor
P1628-62	Module Ignition Supply Input - Signal compare failure	NOTE: Circuit reference - IGN - Rear differential control module not configured correctly Rear differential control module connector is disconnected, connector pin is backed out, connector pin corrosion Ignition signal circuit short circuit to ground, short circuit to power, open circuit, high resistance	Using the Jaguar land Rover approved diagnostic equipment, reconfigure the rear differential control module with the latest level software and perform routine - On Demand Self Test Inspect the rear differential control module connector for security, signs of water ingress and pins for damage and/or corrosion Refer to the appropriate system wiring diagrams and check the ignition signal circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary
P186A-13	Differential Lock-up Actuator Brake Control Circuit/Open - Circuit open	NOTE: Circuit reference - MAG+ - Circuit reference - MAG- - Differential locking motor connector disconnected, connector pin backed out, connector pin corrosion Differential locking motor brake circuit open circuit, high resistance Differential locking motor internal failure Rear differential control module internal failure	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Inspect the differential locking motor connectors for signs of water ingress and pins for damage and/or corrosion Refer to the appropriate system wiring diagrams and check the differential locking motor brake circuit for open circuit, high resistance. Repair the wiring harness or install a new differential locking motor as necessary Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test If the fault persists, install a new differential locking motor If the fault persists, install a new rear differential control module
P186B-11	Differential Lock-up Actuator Brake Control Circuit Low - Circuit short to ground	NOTE: Circuit reference - MAG+ - Circuit reference - MAG- - Differential locking motor brake circuit short circuit to ground Rear differential control module internal failure Differential locking motor internal failure	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Refer to the appropriate system wiring diagrams and check the differential locking motor brake circuit for short circuit to ground. Repair the wiring harness as necessary Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test If the fault persists, install a new rear differential control module If the fault persists, install a new differential locking motor
P186C-12	Differential Lock-up Actuator Brake Control Circuit High - Circuit short to battery	NOTE: Circuit reference - MAG+ - Circuit reference - MAG- - Differential locking motor brake circuit short circuit to power Rear differential control module internal failure Differential locking motor internal failure	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Refer to the appropriate system wiring diagrams and check the differential locking motor brake circuit for short circuit to power. Repair the wiring harness as necessary Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test If the fault persists, install a new rear differential control module If the fault persists, install a new differential locking motor
P186D-97	Clutch Actuator Stuck - Component or system operation obstructed or blocked	NOTE: Circuit reference - MOTOR+ - Circuit reference - MOTOR- - Differential locking motor connector disconnected, connector pin backed out, connector pin corrosion Differential locking motor circuit short circuit to ground, short circuit to power, open circuit, high resistance Differential locking motor internal failure Electric differential internal failure	NOTE: If other differential locking motor related DTCs are set, perform the relevant corrective actions for those DTCs first and retest. After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Inspect the differential locking motor connectors for signs of water ingress and pins for damage and/or corrosion Refer to the appropriate system wiring diagrams and check the differential locking motor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test If the fault persists, install a new differential locking motor If the fault persists, install a new electric differential
P1888-11	Differential Oil Temperature Sensor Circuit Failure - Circuit short to ground	NOTE: Circuit reference - TEMP SIG+ - Electric differential fluid temperature sensor signal circuit short circuit to ground Electric differential temperature sensor internal failure	Refer to the appropriate system wiring diagrams and check the electric differential fluid temperature sensor signal circuit for short circuit to ground. Repair the wiring harness as necessary Install a new electric differential temperature sensor
P1888-15	Differential Oil Temperature Sensor Circuit Failure - Circuit short to battery or open	NOTE: Circuit reference - TEMP SIG+ - Differential locking motor connector disconnected, connector pin backed out, connector pin corrosion Electric differential fluid temperature sensor signal circuit short circuit to power, open circuit, high resistance Electric differential temperature sensor internal failure	Inspect the differential locking motor connectors for signs of water ingress and pins for damage and/or corrosion Refer to the appropriate system wiring diagrams and check the electric differential fluid temperature sensor signal circuit for short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary Install a new electric differential temperature sensor
P188A-98	Differential Oil Temperature Too High/Too Low - Component or system over temperature	NOTE: Circuit reference - TEMP SIG+ - Electric differential fluid level too low Electric differential fluid specification incorrect Rear differential fluid temperature sensor connector disconnected, connector pin backed out, connector pin corrosion Rear differential fluid temperature sensor signal circuit high resistance	NOTE: This DTC may be induced by excessive electric differential clutch operation due to prolonged off road or track driving. Refer to the relevant article of the repair information and check the electric differential fluid level. Rectify any fluid leaks and add fluid as necessary Check the specification of the electric differential fluid. Rectify as necessary Inspect the rear differential fluid temperature sensor connectors for signs of water ingress and pins for damage and/or corrosion Refer to the appropriate system wiring diagrams and check the rear differential fluid temperature sensor signal circuit for high resistance. Repair the wiring harness as necessary
P18A4-11	Motion/Position Sensor Power Circuit - Circuit short to ground	NOTE: Circuit reference - HALL_V+ - Differential locking motor position sensor power circuit short circuit to ground Differential locking motor internal failure Rear differential control module internal failure	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Refer to the appropriate system wiring diagrams and check the differential locking motor position sensor power circuit for short circuit to ground. Repair the wiring harness as necessary Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test If the fault persists, install a new differential locking motor If the fault persists, install a new rear differential control module
P18A4-12	Motion/Position Sensor Power Circuit - Circuit short to battery	NOTE: Circuit reference - HALL_V+ - Differential locking motor position sensor power circuit short circuit to power Differential locking motor internal failure Rear differential control module internal failure	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Refer to the appropriate system wiring diagrams and check the differential locking motor position sensor power circuit for short circuit to power. Repair the wiring harness as necessary Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test If the fault persists, install a new differential locking motor If the fault persists, install a new rear differential control module
P18A5-11	Motion/Position Sensor A Signal Circuit - Circuit short to ground	NOTE: Circuit reference - HALL_IN1 - Circuit reference - HALL_IN2 - Differential locking motor position sensor signal 1 circuit short circuit to ground Differential locking motor position sensor signal 2 circuit short circuit to ground Differential locking motor internal failure Rear differential control module internal failure	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Refer to the appropriate system wiring diagrams and check the differential locking motor position sensor signal 1 circuit for short circuit to ground. Repair the wiring harness as necessary Refer to the appropriate system wiring diagrams and check the differential locking motor position sensor signal 2 circuit for short circuit to ground. Repair the wiring harness as necessary Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test If the fault persists, install a new differential locking motor If the fault persists, install a new rear differential control module
P18A5-15	Motion/Position Sensor A Signal Circuit - Circuit short to battery or open	NOTE: Circuit reference - HALL_IN1 - Circuit reference - HALL_IN2 - Differential locking motor position sensor signal 1 circuit short circuit to power Differential locking motor position sensor signal 2 circuit short circuit to power Differential locking motor internal failure Rear differential control module internal failure	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Refer to the appropriate system wiring diagrams and check the differential locking motor position sensor signal 1 circuit for short circuit to power. Repair the wiring harness as necessary Refer to the appropriate system wiring diagrams and check the differential locking motor position sensor signal 2 circuit for short circuit to power. Repair the wiring harness as necessary Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test If the fault persists, install a new differential locking motor If the fault persists, install a new rear differential control module
P18A5-64	Motion/Position Sensor A Signal Circuit - Signal plausibility failure	NOTE: Circuit reference - HALL_IN1 - Circuit reference - HALL_IN2 - Circuit reference - MOTOR+ - Circuit reference - MOTOR- - Rear differential control module not configured correctly Rear differential control module connector is disconnected, connector pin is backed out, connector pin corrosion Differential locking motor position sensor signal 1 circuit short circuit to ground, short circuit to power, open circuit, high resistance Differential locking motor position sensor signal 2 circuit short circuit to ground, short circuit to power, open circuit, high resistance Differential locking motor circuit short circuit to ground, short circuit to power, open circuit, high resistance Differential locking motor internal failure Rear differential control module internal failure	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Using the Jaguar land Rover approved diagnostic equipment, reconfigure the rear differential control module with the latest level software and perform routine - On Demand Self Test Inspect the rear differential control module connector for security, signs of water ingress and pins for damage and/or corrosion Refer to the appropriate system wiring diagrams and check the differential locking motor position sensor signal 1 circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary Refer to the appropriate system wiring diagrams and check the differential locking motor position sensor signal 2 circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair as necessary Refer to the appropriate system wiring diagrams and check the differential locking motor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test If the fault persists, install a new differential locking motor If the fault persists, install a new rear differential control module
P18A8-74	Differential Actuator Brake Control - Actuator slipping	NOTE: Circuit reference - MAG+ - Circuit reference - MAG- - Differential locking motor circuit short circuit to ground, short circuit to power, open circuit, high resistance Differential locking motor internal failure Rear differential control module internal failure	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Refer to the appropriate system wiring diagrams and check the differential locking motor brake circuit for short circuit to ground, short circuit power, open circuit, high resistance. Repair the wiring harness as necessary Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test If the fault persists, install a new differential locking motor If the fault persists, install a new rear differential control module
P2787-4B	Clutch Temperature Too High - Over temperature	Rear differential clutch temperature too high Electric differential fluid level too low Electric differential internal failure	NOTE: This DTC is set when the calculated temperature of the electric differential clutch exceeds 250°C. This DTC may be induced by excessive electric differential clutch operation due to prolonged off road or track driving. After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Allow the system temperature to return to normal. Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest Refer to the relevant article of the repair information and check the electric differential fluid level. Rectify any fluid leaks and add fluid as necessary Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test If the fault persists, install a new electric differential
U0001-81	High Speed CAN Communication Bus - Invalid serial data received	Invalid data received from another control module through the high speed CAN bus (chassis)	Using the Jaguar Land Rover approved diagnostic equipment, check the snapshot data to determine the invalid data source control module. Check the relevant control module for related DTCs and refer to the relevant DTC index
U0001-82	High Speed CAN Communication Bus - Alive/sequence counter incorrect/not updated	Invalid data received from another control module through the high speed CAN bus (chassis)	Using the Jaguar Land Rover approved diagnostic equipment, check the snapshot data to determine the invalid data source control module. Check the relevant control module for related DTCs and refer to the relevant DTC index
U0001-83	High Speed CAN Communication Bus - Value of signal protection calculation incorrect	Invalid data received from another control module through the high speed CAN bus (chassis)	Using the Jaguar Land Rover approved diagnostic equipment, check the snapshot data to determine the invalid data source control module. Check the relevant control module for related DTCs and refer to the relevant DTC index
U0001-87	High Speed CAN Communication Bus - Missing message	NOTE: Circuit reference - HS CAN H (CH) - Circuit reference - HS CAN L (CH) - Missing message from another control module through the high speed CAN bus (chassis)	Using the Jaguar Land Rover approved diagnostic equipment, check the snapshot data to determine the missing message source control module. Check the relevant control module for related DTCs and refer to the relevant DTC index
U0001-88	High Speed CAN Communication Bus - Bus off	NOTE: Circuit reference - HS CAN H (CH) - Circuit reference - HS CAN L (CH) - High speed CAN bus (chassis) circuit short circuit to ground, short circuit to power, open circuit, high resistance Rear differential control module internal failure	Using the Jaguar Land Rover approved diagnostic equipment, perform a CAN network integrity test. Refer to the appropriate system wiring diagrams and check the high speed CAN bus (chassis) circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary If the fault persists, check other control modules for CAN faults. If only the rear differential control module is missing, install a new rear differential control module as necessary
U1A14-49	CAN Initialisation Failure - Internal electronic failure	Rear differential control module internal failure	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and perform routine - On Demand Self Test If the fault persists, install a new rear differential control module
U2000-4B	Motor Temperature - Over temperature	NOTE: Circuit reference - MAG+ - Circuit reference - MAG- - Rear differential locking motor temperature too high Rear differential control module is not configured correctly Differential locking motor internal failure	NOTE: This DTC is set when the temperature of the differential locking motor exceeds 150°C. This DTC may be induced by excessive electric differential clutch operation due to prolonged off road or track driving. If other differential locking motor brake DTCs are set, perform the corrective actions for those DTCs first and retest. After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Allow the system temperature to return to normal. Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest Using the Jaguar Land Rover approved diagnostic equipment, reconfigure the rear differential control module with the latest level software and perform routine - On Demand Self Test. If the fault persists, install a new differential locking motor
U2300-54	Central Configuration - Missing calibration	Car configuration file mismatch with vehicle specification	NOTE: After updating the car configuration file, set the ignition to on and wait 30 seconds before clearing the DTCs. Using the Jaguar Land Rover approved diagnostic equipment, check and update the car configuration file as necessary. Clear the DTCs and retest
U2300-55	Central Configuration - Not configured	Car configuration file mismatch with vehicle specification	NOTE: After updating the car configuration file, set the ignition to on and wait 30 seconds before clearing the DTCs. Using the Jaguar Land Rover approved diagnostic equipment, check and update the car configuration file as necessary. Clear the DTCs and retest
U2300-56	Central Configuration - Invalid/incomplete configuration	Car configuration file mismatch with vehicle specification	NOTE: After updating the car configuration file, set the ignition to on and wait 30 seconds before clearing the DTCs. Using the Jaguar Land Rover approved diagnostic equipment, check and update the car configuration file as necessary. Clear the DTCs and retest
U2300-64	Central Configuration - Signal plausibility failure	Car configuration file mismatch with vehicle specification	NOTE: After updating the car configuration file, set the ignition to on and wait 30 seconds before clearing the DTCs. Using the Jaguar Land Rover approved diagnostic equipment, check and update the car configuration file as necessary. Clear the DTCs and retest
U3000-42	Control Module - General memory failure	Rear differential control module is not configured correctly	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Using the Jaguar Land Rover approved diagnostic equipment, reconfigure the rear differential control module with the latest level software and perform routine - On Demand Self Test. If the fault persists, install a new rear differential control module
U3000-46	Control Module - Calibration/parameter memory failure	Car configuration file mismatch with vehicle specification	NOTE: After updating the car configuration file, set the ignition to on and wait 30 seconds before clearing the DTCs. Using the Jaguar Land Rover approved diagnostic equipment, check and update the car configuration file as necessary. Clear the DTCs and retest
U3000-47	Control Module - Watchdog/safety microcontroller failure	Rear differential control module is not configured correctly Rear differential control module internal failure	NOTE: If CAN related DTCs are also set, perform the relevant corrective actions for those DTCs first and retest. After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Using the Jaguar Land Rover approved diagnostic equipment, reconfigure the rear differential control module with the latest level software and perform routine - On Demand Self Test If the fault persists, install a new rear differential control module
U3000-48	Control Module - Supervision software failure	Rear differential control module is not configured correctly Rear differential control module internal failure	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Using the Jaguar Land Rover approved diagnostic equipment, reconfigure the rear differential control module with the latest level software and perform routine - On Demand Self Test If the fault persists, install a new rear differential control module
U3000-49	Control Module - Internal electronic failure	Rear differential control module is not configured correctly Rear differential control module internal failure	NOTE: After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Using the Jaguar Land Rover approved diagnostic equipment, reconfigure the rear differential control module with the latest level software and perform routine - On Demand Self Test If the fault persists, install a new rear differential control module
U3000-4B	Control Module - Over temperature	Rear differential control module internal temperature above maximum threshold Rear differential control module internal failure	NOTE: This DTC is set when rear differential control module internal temperature exceeds 120°C. This DTC may be induced by excessive electric differential clutch operation due to prolonged off road or track driving. After installing a new rear differential control module, differential locking motor or electric differential, clear the DTCs and calibrate the system by performing routine - On Demand Self Test. Allow the system temperature to return to normal. Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest If the fault persists, install a new rear differential control module