Central Junction Box (CJB)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2009 Jaguar XKR, 2009 Jaguar XK8, 2008 Jaguar XKR, 2008 Jaguar XK8, and 2007 Jaguar XKR. However, it is still accessible from the selected car via links, so may be relevant.

DTC	Description	Possible Cause	Action
B100951	Ignition authorization	Faulty instrument cluster Target SID re-synchronization error following programming CAN fault	Check ignition, power and ground supplies to CJB and instrument cluster. Re-synchronize ID by re-configuring the instrument cluster as a new module. Check CAN communications between instrument cluster and tester
B100962	Ignition authorization signal compare failure	Low speed CAN fault CJB fault Instrument cluster fault Incorrect module installed (CJB/Instrument cluster) Target SID synchronization error following re-programming Noise/EMC related error	Check CAN communications between CJB and instrument cluster. Check ignition, power and ground supplies to CJB and instrument cluster. Confirm correct module is installed. Re-synchronize ID by re-configuring the instrument cluster as a new module. Check CAN network for interference/EMC related issues
B100963	Ignition authorization time-out	CJB fault Low speed CAN fault Instrument cluster fault Low battery voltage <9V	Check Power and Ground supplies to CJB and instrument cluster. Check CAN communications between CJB and instrument cluster. Check battery is in fully charged and serviceable condition, refer to the battery care manual
B100964	Ignition authorization signal plausibility failure	CJB fault Low speed CAN fault Instrument cluster fault	Check power and ground supplies to CJB and instrument cluster. Check CAN communications between CJB and instrument cluster
B102611	Steering column lock power circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test steering column lock power circuit for short to ground
B102613	Steering column lock power circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test steering column lock power circuit for high resistance
B102B67	Passive key authorization signal incorrect after event	CJB fault Low speed CAN fault Remote Keyless Entry (RKE) module fault Write target SID synchronization error following re-programming	Check power and ground supplies to CJB and RKE module. Check CAN communications between CJB and RKE module. Re-synchronize ID by re-configuring the RKE module as a new module
B102B87	Passive key authorization missing message	CJB fault Low speed CAN fault RKE module fault Key fob battery low/battery contact issue Interference from other RF signal EMC/noise Receiver fault Receiver not programmed correctly Serial communications fault (between receiver and RKE module) Key fault Passive antenna fault Confirm placement of key within vehicle	Check power and ground supplies to CJB, RKE module and receiver. Check CAN communications between CJB and instrument cluster. Check key fob battery. Confirm vehicle surroundings, move vehicle. Check CAN network for interference/EMC related issues. Disconnect battery, then re-connect - confirm operation by re-programming keys. Check serial circuit between receiver and RKE module. Confirm spare key works. Refer to the appropriate SYSTEM WIRING DIAGRAMS and test circuits to all 3 antennas. Check whereabouts of key
B108A23	Start button stuck	Signal stuck low	Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system
B108A29	Start button fault	Signal invalid	Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system
B109511	Wiper On Off relay control circuit short to ground	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test wiper On Off relay control circuit for short to ground
B109512	Wiper On Off relay control circuit short to power	Circuit short to power	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test wiper On Off relay control circuit for short to power
B109612	Wiper speed relay control circuit short to power	Circuit short to power	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test wiper speed relay control circuit for short to power
B109614	Wiper speed relay control circuit open load or short to ground	Circuit short to ground or open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test wiper speed relay control circuit for high resistance or short to ground
B109712	Heated front windshield relay control circuit short to power	Circuit short to power	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test heated front windshield relay control circuit for short to power
B109714	Heated front windshield relay control circuit open load or short to ground	Circuit short to ground or open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test heated front windshield relay control circuit for high resistance or short to ground
B109F11	Intrusion sensor module power circuit short to ground	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test intrusion sensor module power circuit for short to ground
B10AD11	Rain sensor power circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test rain sensor power circuit for short to ground
B10AD13	Rain sensor power circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test rain sensor power circuit for high resistance
B10AD49	Rain sensor internal fault	Internal electronic failure	Install a new rain sensor. Refer to Rain Sensor article.
B10DB23	Front left global close	Signal stuck low	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test Front left global close circuit for short to ground
B10DC23	Front right global close	Signal stuck low	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test Front right global close circuit for short to ground
B10E511	ECM wake-up signal short to ground	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test ECM wake-up signal for short to ground
B10F111	Key In switch circuit short to ground	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test Key In switch circuit for short to ground
B10F311	Front left side lamp control circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front left side lamp control circuit for short to ground
B10F313	Front left side lamp control circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front left side lamp control circuit for high resistance
B10F411	Front right side lamp control circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front right side lamp control circuit for short to ground
B10F413	Front right side lamp control circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front right side lamp control circuit for high resistance
B10F812	Cigar lighter relay control circuit short to power	Circuit short to power	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test cigar lighter relay control circuit for short to power
B10F814	Cigar lighter relay control circuit open load or short to ground	Circuit short to ground or open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test cigar lighter relay control circuit for high resistance or short to ground
B10F912	Accessory socket 'B' relay short to power	Circuit short to power	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test Accessory socket 'B' relay for short to power
B10F914	Accessory socket 'B' relay open load or short to ground	Circuit short to ground or open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test Accessory socket 'B' relay for high resistance or short to ground
B10FA12	Delayed power off relay power output circuits short to power	Circuit short to power	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test delayed power off relay power output circuits for short to power
B10FA14	Delayed power off relay power output circuits open load or short to ground	Circuit short to ground or open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test delayed power off relay power output circuits for high resistance or short to ground
B10FF11	Engine Junction Box (EJB) and ECM ignition relay control circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test EJB and ECM ignition relay control circuits for short to ground
B10FF13	Engine Junction Box (EJB) and ECM ignition relay control circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test EJB and ECM ignition relay control circuits for high resistance
B110011	O2 sensor heater relay control circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test O2 sensor heater relay control circuit for short to ground
B110013	O2 sensor heater relay control circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test O2 sensor heater relay control circuit for high resistance
B113F12	Intruder detection arm/disarm control circuit short to power	Circuit short to power	Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system
B114011	Engine crank authorization circuit short to ground or over temperature	Engine crank authorization circuit short to ground	Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system
B114013	Engine crank authorization circuit open load	Engine crank authorization circuit high resistance	Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system
B114211	Ignition supply status circuits 1 short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test ignition supply status circuits 1 for short to ground
B114213	Ignition supply status circuits 1 open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test ignition supply status circuits 1 for high resistance
B114311	Ignition supply status circuits 2 short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test ignition supply status circuits 2 for short to ground
B114313	Ignition supply status circuits 2 open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test ignition supply status circuits 2 for high resistance
B114411	Steering wheel heater supply circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test steering wheel heater supply circuit for short to ground
B114413	Steering wheel heater supply circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test steering wheel heater supply circuit for high resistance
B114611	Passive sounder supply circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test passive sounder supply circuit for short to ground
B114613	Passive sounder supply circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test passive sounder supply circuit for high resistance
B114711	Front left fog lamp control circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front left fog lamp control circuit for short to ground
B114713	Front left fog lamp control circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front left fog lamp control circuit for high resistance
B114811	Front right fog lamp control circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front right fog lamp control circuit for short to ground
B114813	Front right fog lamp control circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front right fog lamp control circuit for high resistance
B115A11	Front passenger seat heater supply circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front passenger seat heater supply circuit for short to ground
B115A13	Front passenger seat heater supply circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front passenger seat heater supply circuit for high resistance
B115B11	Front driver seat heater supply circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front driver seat heater supply circuit for short to ground
B115B13	Front driver seat heater supply circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front driver seat heater supply circuit for high resistance
B1A9801	LIN Bus short to ground or power	General electrical failure	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test LIN Bus for short to ground or power
B1A9881	LIN Bus header error	Invalid serial data received	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test LIN circuit to battery backed sounder for short to ground, power, high resistance
B1A9883	LIN Bus checksum error	Value of signal protection calculation incorrect	Install a new CJB, refer to the new module installation note at the top of the DTC Index
B1B651C	Front left seat heater temperature sensor fault	Circuit voltage out of range	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front left seat heater temperature sensor circuit for short to ground, power, high resistance
B1B661C	Front right seat heater temperature sensor fault	Circuit voltage out of range	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front left seat heater temperature sensor circuit for short to ground, power, high resistance
B1C4323	Master light switch stuck	Signal stuck low	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test master light switch circuit for short to ground
B1C4523	Front wiper park position stuck	Signal stuck low	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test wiper park position switch circuit for short to ground
B1C7812	Powerwash relay control circuit short to power	Circuit short to power	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test powerwash relay control circuit for short to power
B1C7814	Powerwash relay control circuit open load or short to ground	Circuit short to ground or open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test powerwash relay control circuit for high resistance or short to ground
B1C7911	Windshield washer pump control circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test windshield washer pump control circuit for short to ground
B1C7913	Windshield washer pump control circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test windshield washer pump control circuit for high resistance
B1C9811	Front left cornering lamp control circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front left cornering lamp control circuit for short to ground
B1C9813	Front left cornering lamp control circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front left cornering lamp control circuit for high resistance
B1C9911	Front right cornering lamp control circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front right cornering lamp control circuit for short to ground
B1C9913	Front right cornering lamp control circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front right cornering lamp control circuit for high resistance
B1D0011	Front left low beam control circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front left low beam control circuit for short to ground
B1D0013	Front left low beam control circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front left low beam control circuit for high resistance
B1D0111	Front right low beam control circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front right low beam control circuit for short to ground
B1D0113	Front right low beam control circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front right low beam control circuit for high resistance
B1D0211	Front left high beam control circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front left high beam control circuit for short to ground
B1D0213	Front left high beam control circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front left high beam control circuit for high resistance
B1D0311	Front right high beam control circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front right high beam control circuit for short to ground
B1D0313	Front right high beam control circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test front right high beam control circuit for high resistance
B1D1711	Battery backed sounder power circuit short to ground	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test battery backed sounder power circuit for short to ground
B1D1787	Battery backed sounder reply failure	Missing message	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test LIN Bus for short to ground, power or high resistance
B1D2711	Heater coolant pump control circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test heater coolant pump control circuit for short to ground
B1D2713	Heater coolant pump control circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test heater coolant pump control circuit for high resistance
P080111	Reverse inhibit to rear view mirror circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test reverse inhibit to rear view mirror circuit for short to ground
P080113	Reverse inhibit to rear view mirror circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test reverse inhibit to rear view mirror circuit for open load
U001088	Medium speed CAN communication Bus	Bus Off	Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system
U014200	Lost communication with RJB	Lost communication with RJB	Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system
U015500	Lost communication with instrument cluster	Lost communication with instrument cluster	Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system
U015600	Lost communication with Information and Entertainment module	Lost Communication with Information and Entertainment module	Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system
U016400	Lost communication with climate control module	Lost communication with climate control module	Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system
U019900	Lost communication with Driver Door Module (DDM)	Lost communication with DDM	Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system
U020000	Lost communication with Passenger Door Module (PDM)	Lost communication with PDM	Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system
U020600	Lost communication with convertible top module	Lost communication with convertible top module	Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system
U021400	Lost communication with remote keyless entry module	Lost communication with remote keyless entry module	Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system
U030000	Internal control module software incompatibility	Invalid configuration message is received	Re-configure the RJB using the manufacturer approved diagnostic system. Clear the DTC and retest. If the DTC is still logged suspect the CJB module, refer to the new module installation note at the top of the DTC Index
U030046	Internal control module software incompatibility	Calibration parameter failure	Re-calibrate the CJB using the manufacturer approved diagnostic system
U1A1449	CAN initialization failure	Internal electronic failure	Install a new CJB, refer to the new module installation note at the top of the DTC Index
U201011	Switch illumination supply circuit short to ground or over temperature	Circuit short to ground	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test switch illumination supply circuit for short to ground
U201013	Switch illumination supply circuit open load	Circuit open	Refer to the appropriate SYSTEM WIRING DIAGRAMS and test switch illumination supply circuit for high resistance
U300049	Control module	Internal electronic failure	Install a new CJB, refer to the new module installation note at the top of the DTC Index
U300055	Stored vehicle configuration data does not match	Incorrect car configuration data received	Re-configure the RJB using the manufacturer approved diagnostic system. Clear DTC and re-test. If the DTC remains suspect the CJB, refer to the new module installation note at the top of the DTC Index
U300087	Control Module	Missing message	Re-configure the RJB using the manufacturer approved diagnostic system. Check CJB for DTCs and refer to the DTC Index . Check CAN network integrity using the manufacturer approved diagnostic system
U300281	Vehicle Identification Number (VIN)	Vehicle/component mis-match. Corrupt VIN data being transmitted, module previously installed to other vehicle	Install original module, check for DTCs and refer to relevant DTC Index
U300316	Battery voltage	Circuit voltage below threshold	Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system
U300317	Battery voltage	Circuit voltage above threshold	Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system