TOWBAR Control Module (TBCM)

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 suspect and the vehicle remains under manufacturer warranty, refer to the Warranty Policy and Procedures information, or determine if any prior approval programme 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 accurate to three decimal places, and with an up-to-date calibration certificate. 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 logged in the Towbar Control Module (TBCM). For additional diagnosis and testing information, refer to the relevant Diagnosis and Testing article in the repair information. For additional information, refer to: DIAGNOSTIC TROUBLE CODE INDEX - DTC: TOWBAR CONTROL MODULE (TBCM)

DTC	DESCRIPTION	POSSIBLE CAUSES	ACTION
B1102-19	Trailer stop lamp - Circuit current above threshold	Trailer stop lamp circuit short circuit to ground, short circuit to power	NOTE: This DTC may be set by a fault within the trailer. Refer to the appropriate system wiring diagrams and check the trailer stop lamp circuit for short circuit to ground, short circuit to power. Clear the DTCs and retest
B1102-53	Trailer stop lamp - Deactivated	Trailer stop lamp circuit short circuit to ground, short circuit to power, open circuit, high resistance	NOTE: This DTC may be set by a fault within the trailer. The outputs on the TBCM can only be reactivated twice. If an output has been deactivated three times, the module will have to be replaced to restore functionality. Refer to the appropriate system wiring diagrams and check the trailer stop lamp circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Enable Protected Outputs (0x205E). Clear the DTCs and retest
B12EF-19	Trailer Fog Lamp - Circuit current above threshold	Trailer fog lamp circuit short circuit to ground, short circuit to power	NOTE: This DTC may be set by a fault within the trailer. Refer to the appropriate system wiring diagrams and check the trailer fog lamp circuit for short circuit to ground, short circuit to power. Clear the DTCs and retest
B12EF-53	Trailer Fog Lamp - Deactivated	Trailer fog lamp circuit short circuit to ground, short circuit to power, open circuit, high resistance	NOTE: This DTC may be set by a fault within the trailer. The outputs on the TBCM can only be reactivated twice. If an output has been deactivated three times, the module will have to be replaced to restore functionality. Refer to the appropriate system wiring diagrams and check the trailer fog lamp circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Enable Protected Outputs (0x205E). Clear the DTCs and retest
B14CF-19	Trailer Reverse Light - Circuit current above threshold	Trailer reverse lamp circuit short circuit to ground, short circuit to power	NOTE: This DTC may be set by a fault within the trailer. Refer to the appropriate system wiring diagrams and check the trailer reverse lamp circuit for short circuit to ground, short circuit to power. Clear the DTCs and retest
B14CF-53	Trailer Reverse Light - Deactivated	Trailer reverse lamp circuit short circuit to ground, short circuit to power, open circuit, high resistance	NOTE: This DTC may be set by a fault within the trailer. The outputs on the TBCM can only be reactivated twice. If an output has been deactivated three times, the module will have to be replaced to restore functionality. Refer to the appropriate system wiring diagrams and check the trailer reverse lamp circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Enable Protected Outputs (0x205E). Clear the DTCs and retest
B14D8-19	Left Trailer Position Lamp - Circuit current above threshold	Trailer left side lamp circuit short circuit to ground, short circuit to power	NOTE: This DTC may be set by a fault within the trailer. Refer to the appropriate system wiring diagrams and check the trailer left side lamp circuit for short circuit to ground, short circuit to power. Clear the DTCs and retest
B14D8-53	Left Trailer Position Lamp - Deactivated	Trailer left side lamp circuit short circuit to ground, short circuit to power, open circuit, high resistance	NOTE: This DTC may be set by a fault within the trailer. The outputs on the TBCM can only be reactivated twice. If an output has been deactivated three times, the module will have to be replaced to restore functionality. Refer to the appropriate system wiring diagrams and check the trailer left side lamp circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Enable Protected Outputs (0x205E). Clear the DTCs and retest
B14DF-19	Right Trailer Position Lamp - Circuit current above threshold	Trailer right side lamp circuit short circuit to ground, short circuit to power	NOTE: This DTC may be set by a fault within the trailer. Refer to the appropriate system wiring diagrams and check the trailer right side lamp circuit for short circuit to ground, short circuit to power. Clear the DTCs and retest
B14DF-53	Right Trailer Position Lamp - Deactivated	Trailer right side lamp circuit short circuit to ground, short circuit to power, open circuit, high resistance	NOTE: This DTC may be set by a fault within the trailer. The outputs on the TBCM can only be reactivated twice. If an output has been deactivated three times, the module will have to be replaced to restore functionality. Refer to the appropriate system wiring diagrams and check the trailer right side lamp circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Enable Protected Outputs (0x205E). Clear the DTCs and retest
B1538-19	Electrically Deployable Tow Bar Movement Motor - Circuit current above threshold	Deployable towbar stow/deploy motor circuit short circuit to ground, short circuit to power Short circuit between motor connections	Refer to the appropriate system wiring diagrams and check the deployable towbar stow/deploy motor circuit for short circuit to ground, short circuit to power. Repair the wiring harness or install a new deployable towbar assembly as necessary
B1538-53	Electrically Deployable Tow Bar Movement Motor - Deactivated	Deployable towbar movement motor circuit short circuit to ground, short circuit to power, open circuit, high resistance Deployable towbar mechanical failure Short circuit between motor connections	NOTE: The outputs on the TBCM can only be reactivated twice. If an output has been deactivated three times, the module will have to be replaced to restore functionality. Refer to the appropriate system wiring diagrams and check the deployable towbar movement motor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Enable Protected Outputs (0x205E). Clear the DTCs and retest Check the deployable towbar mechanism for obstructions and debris. Check that the trailer socket can be moved upwards with minimal resistance. Rectify as necessary
B1538-93	Electrically Deployable Tow Bar Movement Motor - No operation	Deployable towbar movement motor circuit short circuit to ground, short circuit to power, open circuit, high resistance	Refer to the appropriate system wiring diagrams and check the deployable towbar movement motor circuit for short circuit to ground, short circuit to power, open circuit, high resistance
B1539-19	Electrically Deployable Tow Bar Locking Motor - Circuit current above threshold	Deployable towbar lock/unlock motor circuit short circuit to ground, short circuit to power Short circuit between motor connections	Refer to the appropriate system wiring diagrams and check the deployable towbar lock/unlock motor circuit for short circuit to ground, short circuit to power. Repair the wiring harness or install a new deployable towbar assembly as necessary
B1539-53	Electrically Deployable Tow Bar Locking Motor - Deactivated	Deployable towbar locking motor circuit short circuit to ground, short circuit to power, open circuit, high resistance Deployable towbar mechanical failure Short circuit between motor connections	NOTE: The outputs on the TBCM can only be reactivated twice. If an output has been deactivated three times, the module will have to be replaced to restore functionality. Refer to the appropriate system wiring diagrams and check the deployable towbar locking motor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Enable Protected Outputs (0x205E). Clear the DTCs and retest Check the deployable towbar mechanism for obstructions and debris. Check that the trailer socket can be moved upwards with minimal resistance. Rectify as necessary
B1539-93	Electrically Deployable Tow Bar Locking Motor - No operation	Deployable towbar locking motor circuit short circuit to ground, short circuit to power, open circuit, high resistance	Refer to the appropriate system wiring diagrams and check the deployable towbar locking motor circuit for short circuit to ground, short circuit to power, open circuit, high resistance
B153A-11	Electrically Deployable Tow Bar Movement Motor Sensor - Circuit short to ground	Deployable towbar movement motor position sensor circuit short circuit to ground	Refer to the appropriate system wiring diagrams and check the deployable towbar movement motor position sensor circuit for short circuit to ground
B153A-12	Electrically Deployable Tow Bar Movement Motor Sensor - Circuit short to battery	Deployable towbar stow/deploy motor position sensor circuit short circuit to power	Refer to the appropriate system wiring diagrams and check the deployable towbar stow/deploy motor position sensor circuit for short circuit to power. Repair the wiring harness or install a new deployable towbar assembly as necessary
B153A-13	Electrically Deployable Tow Bar Movement Motor Sensor - Circuit open	Deployable towbar stow/deploy motor position sensor circuit open circuit, high resistance	Refer to the appropriate system wiring diagrams and check the deployable towbar stow/deploy motor position sensor circuit for open circuit, high resistance. Repair the wiring harness or install a new deployable towbar assembly as necessary
B153A-31	Electrically Deployable Tow Bar Movement Motor Sensor - No signal	Deployable towbar movement motor circuit short circuit to ground, short circuit to power, open circuit, high resistance Deployable towbar movement motor position sensor circuit short circuit to ground, short circuit to power, open circuit, high resistance	Refer to the appropriate system wiring diagrams and check the deployable towbar movement motor circuit for short circuit to ground, short circuit to power, open circuit, high resistance Refer to the appropriate system wiring diagrams and check the deployable towbar movement motor position sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance
B153A-39	Electrically Deployable Tow Bar Movement Motor Sensor - Incorrect has too few pulses	Deployable towbar stow/deploy motor position sensor circuit short circuit to ground, short circuit to power, open circuit, high resistance Deployable towbar stow/deploy motor circuit short circuit to ground, short circuit to power, open circuit, high resistance Incorrect deployable towbar assembly installed	Refer to the appropriate system wiring diagrams and check the deployable towbar stow/deploy motor position sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness or install a new deployable towbar assembly as necessary Refer to the appropriate system wiring diagrams and check the deployable towbar stow/deploy motor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness or install a new deployable towbar assembly as necessary Check the part number of the deployable towbar assembly. Install a new deployable towbar assembly as necessary
B153A-3A	Electrically Deployable Tow Bar Movement Motor Sensor - Incorrect has too many pulses	Deployable towbar stow/deploy motor position sensor circuit short circuit to ground, short circuit to power, open circuit, high resistance Deployable towbar stow/deploy motor circuit short circuit to ground, short circuit to power, open circuit, high resistance Incorrect deployable towbar assembly installed Deployable towbar mechanical failure	Refer to the appropriate system wiring diagrams and check the deployable towbar stow/deploy motor position sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness or install a new deployable towbar assembly as necessary Refer to the appropriate system wiring diagrams and check the deployable towbar stow/deploy motor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness or install a new deployable towbar assembly as necessary Check the part number of the deployable towbar assembly. Install a new deployable towbar assembly as necessary
B153B-11	Electrically Deployable Tow Bar Locking Motor Sensor - Circuit short to ground	Deployable towbar locking motor position sensor circuit short circuit to ground	Refer to the appropriate system wiring diagrams and check the deployable towbar locking motor position sensor circuit for short circuit to ground
B153B-12	Electrically Deployable Tow Bar Locking Motor Sensor - Circuit short to battery	Deployable towbar lock/unlock motor position sensor circuit short circuit to power	Refer to the appropriate system wiring diagrams and check the deployable towbar lock/unlock motor position sensor circuit for short circuit to power. Repair the wiring harness or install a new deployable towbar assembly as necessary
B153B-13	Electrically Deployable Tow Bar Locking Motor Sensor - Circuit open	Deployable towbar lock/unlock motor position sensor circuit open circuit, high resistance	Refer to the appropriate system wiring diagrams and check the deployable towbar lock/unlock motor position sensor circuit for open circuit, high resistance. Repair the wiring harness or install a new deployable towbar assembly as necessary
B153B-31	Electrically Deployable Tow Bar Locking Motor Sensor - No signal	Deployable towbar locking motor circuit short circuit to ground, short circuit to power, open circuit, high resistance Deployable towbar locking motor position sensor circuit short circuit to ground, short circuit to power, open circuit, high resistance	Refer to the appropriate system wiring diagrams and check the deployable towbar locking motor circuit for short circuit to ground, short circuit to power, open circuit, high resistance Refer to the appropriate system wiring diagrams and check the deployable towbar locking motor position sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance
B153B-39	Electrically Deployable Tow Bar Locking Motor Sensor - Incorrect has too few pulses	Deployable towbar lock/unlock motor position sensor circuit short circuit to ground, short circuit to power, open circuit, high resistance Deployable towbar lock/unlock motor circuit short circuit to ground, short circuit to power, open circuit, high resistance Incorrect deployable towbar assembly installed	Refer to the appropriate system wiring diagrams and check the deployable towbar lock/unlock motor position sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness or install a new deployable towbar assembly as necessary Refer to the appropriate system wiring diagrams and check the deployable towbar lock/unlock motor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness or install a new deployable towbar assembly as necessary Check the part number of the deployable towbar assembly. Install a new deployable towbar assembly as necessary
B153B-3A	Electrically Deployable Tow Bar Locking Motor Sensor - Incorrect has too many pulses	Deployable towbar lock/unlock motor position sensor circuit short circuit to ground, short circuit to power, open circuit, high resistance Deployable towbar lock/unlock motor circuit short circuit to ground, short circuit to power, open circuit, high resistance Incorrect deployable towbar assembly installed Deployable towbar mechanical failure	Refer to the appropriate system wiring diagrams and check the deployable towbar lock/unlock motor position sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness or install a new deployable towbar assembly as necessary Refer to the appropriate system wiring diagrams and check the deployable towbar lock/unlock motor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness or install a new deployable towbar assembly as necessary Check the part number of the deployable towbar assembly. Install a new deployable towbar assembly as necessary
B153C-13	Left Deployable Side Step Illumination - Circuit open	Left deployable side step illumination circuit open circuit, high resistance	Refer to the appropriate system wiring diagrams and check the left deployable side step illumination circuit for open circuit, high resistance. Repair the wiring harness or install a new deployable side step lighting LED
B153C-19	Left Deployable Side Step Illumination - Circuit current above threshold	Left deployable side step illumination circuit short circuit to ground, short circuit to power	Refer to the appropriate system wiring diagrams and check the left deployable side step illumination circuit for short circuit to ground, short circuit to power. Repair the wiring harness or install a new deployable side step lighting LED
B153D-13	Right Deployable Side Step Illumination - Circuit open	Right deployable side step illumination circuit open circuit, high resistance	Refer to the appropriate system wiring diagrams and check the right deployable side step illumination circuit for open circuit, high resistance. Repair the wiring harness or install a new deployable side step lighting LED
B153D-19	Right Deployable Side Step Illumination - Circuit current above threshold	Right deployable side step illumination circuit short circuit to ground, short circuit to power	Refer to the appropriate system wiring diagrams and check the right deployable side step illumination circuit for short circuit to ground, short circuit to power. Repair the wiring harness or install a new deployable side step lighting LED
B153E-01	Electrically Deployable Tow Bar Switch Pack Illumination - General electrical failure	Deployable towbar switch status LED circuit short circuit to ground, short circuit to power, open circuit, high resistance	Refer to the appropriate system wiring diagrams and check the deployable towbar switch status LED circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness or install a new deployable towbar switch as necessary
B153F-01	Electrically Deployable Tow Bar Switch Pack Telltale - General electrical failure	Deployable towbar switch status LED circuit short circuit to ground, short circuit to power, open circuit, high resistance	Refer to the appropriate system wiring diagrams and check the deployable towbar switch status LED circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness or install a new deployable towbar switch as necessary
B1540-13	Electrically Deployable Towbar Speaker - Circuit open	Deployable towbar speaker circuit open circuit, high resistance	Refer to the appropriate system wiring diagrams and check the deployable towbar speaker circuit for open circuit, high resistance
B1541-12	Trailer Socket Connection - Circuit short to battery	Trailer detect circuit short circuit to battery	Refer to the appropriate system wiring diagrams and check the towing detect circuit for short circuit to battery
B1541-13	Trailer Socket Connection - Circuit open	Trailer detect circuit open circuit, high resistance	Refer to the appropriate system wiring diagrams and check the towing detect circuit for open circuit, high resistance
B1548-12	Trailer Light Test Button - Circuit short to battery	Trailer lamps test switch circuit short circuit to battery	Check the operation of the trailer lamps test switch Refer to the appropriate system wiring diagrams and check the trailer lamps test switch circuit for short circuit to battery
B1548-23	Trailer Light Test Button - Signal stuck low	Trailer lamps test switch stuck active Trailer lamps test switch circuit short circuit to ground	Check the operation of the trailer lamps test switch Refer to the appropriate system wiring diagrams and check the trailer lamps test switch circuit for short circuit to ground
B1549-12	Electrically Deployable Tow Bar Button - Circuit short to battery	Deployable towbar switch signal circuit short circuit to power	Refer to the appropriate system wiring diagrams and check the deployable towbar switch signal circuit for short circuit to power. Repair the wiring harness or install a new deployable towbar switch as necessary
B1549-23	Electrically Deployable Tow Bar Button - Signal stuck low	Deployable towbar deploy/stow switch stuck active Deployable towbar deploy/stow switch circuit short circuit to ground	Check the operation of the deployable towbar deploy/stow switch Refer to the appropriate system wiring diagrams and check the deployable towbar deploy/stow switch circuit for short circuit to ground
B1556-12	Deployable Side Step Button - Circuit short to battery	Deployable side step switch circuit short circuit to power	Refer to the appropriate system wiring diagrams and check the deployable side step switch circuit for short circuit to power
B1556-23	Deployable Side Step Button - Signal stuck low	Deployable side step switch circuit short circuit to ground	Refer to the appropriate system wiring diagrams and check the deployable side step switch circuit for short circuit to ground
B1D08-19	Left Trailer Direction Indicator - Circuit current above threshold	Trailer left turn signal indicator circuit short circuit to ground, short circuit to power	NOTE: This DTC may be set by a fault within the trailer. Refer to the appropriate system wiring diagrams and check the trailer left turn signal indicator circuit for short circuit to ground, short circuit to power. Clear the DTCs and retest
B1D08-53	Left Trailer Direction Indicator - Deactivated	Trailer left turn signal indicator circuit short circuit to ground, short circuit to power, open circuit, high resistance	NOTE: This DTC may be set by a fault within the trailer. The outputs on the TBCM can only be reactivated twice. If an output has been deactivated three times, the module will have to be replaced to restore functionality. Refer to the appropriate system wiring diagrams and check the trailer left turn signal indicator circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Enable Protected Outputs (0x205E). Clear the DTCs and retest
B1D09-19	Right Trailer Direction Indicator - Circuit current above threshold	Trailer right turn signal indicator circuit short circuit to ground, short circuit to power	NOTE: This DTC may be set by a fault within the trailer. Refer to the appropriate system wiring diagrams and check the trailer right turn signal indicator circuit for short circuit to ground, short circuit to power. Clear the DTCs and retest
B1D09-53	Right Trailer Direction Indicator - Deactivated	Trailer right turn signal indicator circuit short circuit to ground, short circuit to power, open circuit, high resistance	NOTE: This DTC may be set by a fault within the trailer. The outputs on the TBCM can only be reactivated twice. If an output has been deactivated three times, the module will have to be replaced to restore functionality. Refer to the appropriate system wiring diagrams and check the trailer right turn signal indicator circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Enable Protected Outputs (0x205E). Clear the DTCs and retest
C1002-77	Left Power Running Board Stow - Commanded position not reachable	Mechanical fault with the link Output shaft torque ring slipping Physical obstruction	NOTE: When repairing, disconnect the deployable side step motor electrical connector because of trap hazard near hinges due to unexpected operation. The physical obstruction might have been removed Check the left deployable side step hinges for dirt and debris, wash the step if necessary Remove the left deployable side step from hinges. Check the rear hinge for free movement. If movement is restricted renew the left deployable side step rear hinge. Connect the left deployable side step motor electrical connector and check that the front hinge extends when the door is opened. Replace the left deployable side step motor/front hinge assembly as necessary. Clear the DTCs and retest
C1002-93	Left Power Running Board Stow - No operation	Mechanical fault with the link Output shaft torque ring slipping	NOTE: When repairing, disconnect the deployable side step motor electrical connector because of trap hazard near hinges due to unexpected operation. Check the left deployable side step hinges for dirt and debris, wash the step if necessary Remove the left deployable side step from hinges. Check the rear hinge for free movement. If movement is restricted renew the left deployable side step rear hinge. Connect the left deployable side step motor electrical connector and check that the front hinge extends when the door is opened. Replace the left deployable side step motor/front hinge assembly as necessary. Clear the DTCs and retest
C1003-77	Right Power Running Board Stow - Commanded position not reachable	Mechanical fault with the link Output shaft torque ring slipping Physical obstruction	NOTE: When repairing, disconnect the deployable side step motor electrical connector because of trap hazard near hinges due to unexpected operation. The physical obstruction might have been removed Check the right deployable side step hinges for dirt and debris, wash the step if necessary Remove the right deployable side step from hinges. Check the rear hinge for free movement. If movement is restricted renew the right deployable side step rear hinge. Connect the right deployable side step motor electrical connector and check that the front hinge extends when the door is opened. Replace the right deployable side step motor/front hinge assembly as necessary. Clear the DTCs and retest
C1003-93	Right Power Running Board Stow - No operation	Mechanical fault with the link Output shaft torque ring slipping	NOTE: When repairing, disconnect the deployable side step motor electrical connector because of trap hazard near hinges due to unexpected operation. Check the right deployable side step hinges for dirt and debris, wash the step if necessary Remove the right deployable side step from hinges. Check the rear hinge for free movement. If movement is restricted renew the right deployable side step rear hinge. Connect the right deployable side step motor electrical connector and check that the front hinge extends when the door is opened. Replace the right deployable side step motor/front hinge assembly as necessary. Clear the DTCs and retest
C1004-77	Right Power Running Board Deploy - Commanded position not reachable	Mechanical fault with the link Output shaft torque ring slipping Physical obstruction	NOTE: When repairing, disconnect the deployable side step motor electrical connector because of trap hazard near hinges due to unexpected operation. The physical obstruction might have been removed Check the right deployable side step hinges for dirt and debris, wash the step if necessary Remove the right deployable side step from hinges. Check the rear hinge for free movement. If movement is restricted renew the right deployable side step rear hinge. Connect the right deployable side step motor electrical connector and check that the front hinge extends when the door is opened. Replace the right deployable side step motor/front hinge assembly as necessary. Clear the DTCs and retest
C1004-93	Right Power Running Board Deploy - No operation	Mechanical fault with the link Output shaft torque ring slipping	NOTE: When repairing, disconnect the deployable side step motor electrical connector because of trap hazard near hinges due to unexpected operation. Check the right deployable side step hinges for dirt and debris, wash the step if necessary Remove the right deployable side step from hinges. Check the rear hinge for free movement. If movement is restricted renew the right deployable side step rear hinge. Connect the right deployable side step motor electrical connector and check that the front hinge extends when the door is opened. Replace the right deployable side step motor/front hinge assembly as necessary. Clear the DTCs and retest
C1005-77	Left Power Running Board Deploy - Commanded position not reachable	Mechanical fault with the link Output shaft torque ring slipping Physical obstruction	NOTE: When repairing, disconnect the deployable side step motor electrical connector because of trap hazard near hinges due to unexpected operation. The physical obstruction might have been removed Check the left deployable side step hinges for dirt and debris, wash the step if necessary Remove the left deployable side step from hinges. Check the rear hinge for free movement. If movement is restricted renew the left deployable side step rear hinge. Connect the left deployable side step motor electrical connector and check that the front hinge extends when the door is opened. Replace the left deployable side step motor/front hinge assembly as necessary. Clear the DTCs and retest
C1005-93	Left Power Running Board Deploy - No operation	Mechanical fault with the link Output shaft torque ring slipping	NOTE: When repairing, disconnect the deployable side step motor electrical connector because of trap hazard near hinges due to unexpected operation. Check the left deployable side step hinges for dirt and debris, wash the step if necessary Remove the left deployable side step from hinges. Check the rear hinge for free movement. If movement is restricted renew the left deployable side step rear hinge. Connect the left deployable side step motor electrical connector and check that the front hinge extends when the door is opened. Replace the left deployable side step motor/front hinge assembly as necessary. Clear the DTCs and retest
C1006-19	Left Power Running Board Motor - Circuit current above threshold	NOTE: Circuit reference - LH DEPLOY/LH STOW Left deployable side step motor circuit short circuit to ground, short circuit to power Harness failure Deployable side step motor internal failure Short circuit between motor connections	Refer to the appropriate system wiring diagrams, unplug the harness from the deployable side step motor and check the left deployable side step deploy and stow circuits for short circuit to ground, short circuit to power: If the deployable side step is not moving and a short circuit is present at the deploy or stow circuits when disconnected from the motor, repair or replace the vehicle harness as required. Clear DTC and retest If the deployable side step is not moving and a short circuit cannot be detected at the deploy or stow circuits when disconnected from the motor, check for short circuit between the corresponding motor pins. If a short is detected at the motor, replace the deployable side step motor assembly as required. Clear DTC and retest
C1006-53	Left Power Running Board Motor - Deactivated	Left deployable side step motor circuit short circuit to ground, short circuit to power, open circuit, high resistance Left deployable side step mechanical failure	NOTE: The outputs on the TBCM can only be reactivated twice. If an output has been deactivated three times, the module will have to be replaced to restore functionality. Refer to the appropriate system wiring diagrams and check the left deployable side step motor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Enable Protected Outputs (0x205E). Clear the DTCs and retest Check the left deployable side step motor/front hinge assembly for damage or loose fasteners. If the front hinge can be moved by hand, replace the left deployable side step motor/front hinge assembly
C1007-19	Right Power Running Board Motor - Circuit current above threshold	NOTE: Circuit reference - RH DEPLOY/RH STOW Right deployable side step motor circuit short circuit to ground, short circuit to power Harness failure Deployable side step motor internal failure Short circuit between motor connections	Refer to the appropriate system wiring diagrams, unplug the harness from the deployable side step motor and check the right deployable side step deploy and stow circuits for short circuit to ground, short circuit to power: If the deployable side step is not moving and a short circuit is present at the deploy or stow circuits when disconnected from the motor, repair or replace the vehicle harness as required. Clear DTC and retest If the deployable side step is not moving and a short circuit cannot be detected at the deploy or stow circuits when disconnected from the motor, check for short circuit between the corresponding motor pins. If a short is detected at the motor, replace the deployable side step motor assembly as required. Clear DTC and retest
C1007-53	Right Power Running Board Motor - Deactivated	Right deployable side step motor circuit short circuit to ground, short circuit to power, open circuit, high resistance Right deployable side step mechanical failure	NOTE: The outputs on the TBCM can only be reactivated twice. If an output has been deactivated three times, the module will have to be replaced to restore functionality. Refer to the appropriate system wiring diagrams and check the right deployable side step motor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Enable Protected Outputs (0x205E). Clear the DTCs and retest Check the right deployable side step motor/front hinge assembly for damage or loose fasteners. If the front hinge can be moved by hand, replace the right deployable side step motor/front hinge assembly
C1008-11	Left Power Running Board Position/Motion Sensor - Circuit short to ground	Left deployable side step motor position sensor circuit short circuit to ground	Refer to the appropriate system wiring diagrams and check the left deployable side step motor position sensor circuit for short circuit to ground
C1008-12	Left Power Running Board Position/Motion Sensor - Circuit short to battery	Left deployable side step motor position sensor circuit short circuit to power	Refer to the appropriate system wiring diagrams and check the left deployable side step motor position sensor circuit for short circuit to power
C1008-31	Left Power Running Board Position/Motion Sensor - No signal	Left deployable side step motor position sensor circuit short circuit to ground, short circuit to power, open circuit, high resistance	Refer to the appropriate system wiring diagrams and check the left deployable side step motor position sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance
C1008-3A	Left Power Running Board Position/Motion Sensor - Incorrect has too many pulses	1) Output shaft torque ring slipping 2) Deployable side step wedge missing 3) Deployable side step motor internal failure Incorrect deployable side step assembly installed	If the deployable side step deploys or stows fully, but the motor continues to operate after the board completes the movement: Check if the output shaft torque ring is slipping. If the ring is slipping, replace the deployable side step motor assembly as required. Clear DTC and retest If the deployable side step motor is operating for 4 seconds then stops but the side step does not move: Check the link assembly for a missing or damaged link wedge and install or replace the link wedge as required. Clear DTC and retest Check for mechanical faults in the link assembly. If a fault is evident, replace the link assembly as required. Clear DTC and retest Check if the output shaft torque ring is slipping. If the ring is slipping, replace the deployable side step motor assembly as required. Clear DTC and retest
C1009-11	Right Power Running Board Position/Motion Sensor - Circuit short to ground	Right deployable side step motor position sensor circuit short circuit to ground	Refer to the appropriate system wiring diagrams and check the right deployable side step motor position sensor circuit for short circuit to ground
C1009-12	Right Power Running Board Position/Motion Sensor - Circuit short to battery	Right deployable side step motor position sensor circuit short circuit to power	Refer to the appropriate system wiring diagrams and check the right deployable side step motor position sensor circuit for short circuit to power
C1009-31	Right Power Running Board Position/Motion Sensor - No signal	Right deployable side step motor position sensor circuit short circuit to ground, short circuit to power, open circuit, high resistance	Refer to the appropriate system wiring diagrams and check the right deployable side step motor position sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance
C1009-3A	Right Power Running Board Position/Motion Sensor - Incorrect has too many pulses	1) Output shaft torque ring slipping 2) Deployable side step wedge missing 3) Deployable side step motor internal failure Incorrect deployable side step assembly installed	If the deployable side step deploys or stows fully, but the motor continues to operate after the board completes the movement: Check if the output shaft torque ring is slipping. If the ring is slipping, replace the deployable side step motor assembly as required. Clear DTC and retest If the deployable side step motor is operating for 4 seconds then stops but the side step does not move: Check the link assembly for a missing or damaged link wedge and install or replace the link wedge as required. Clear DTC and retest Check for mechanical faults in the link assembly. If a fault is evident, replace the link assembly as required. Clear DTC and retest Check if the output shaft torque ring is slipping. If the ring is slipping, replace the deployable side step motor assembly as required. Clear DTC and retest
P05CB-95	Vehicle Hardware Incompatibility - Incorrect assembly	Incorrect towbar control module software installed Hardware/software mismatch	Using JLR approved diagnostic equipment, check that the correct towbar control module and/or software is installed. Rectify as required
U0037-87	Vehicle Communication Bus B - Missing message	Missing message from another control module via 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
U0037-88	Vehicle Communication Bus B - Bus off	High speed CAN bus (chassis) circuit short circuit to ground, short circuit to power, open circuit, high resistance	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
U0300-00	Internal Control Module Software Incompatibility - No sub type information	Towbar control module is not configured correctly	Using the Jaguar Land Rover approved diagnostic equipment, re-configure the towbar control module with the latest level software
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
U2300-64	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
U3000-44	Control Module - Data memory failure	Towbar control module internal failure	Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest. If the fault persists, install a new towbar control module
U3000-45	Control Module - Program memory failure	Towbar control module internal failure	Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest. If the fault persists, install a new towbar control module
U3000-49	Control Module - Internal electronic failure	Towbar control module internal failure	Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest. If the fault persists, install a new towbar control module