DTC Index

WARNING: This page is about a different car, the 2011 Jaguar XKR, 2011 Jaguar XK, 2010 Jaguar XKR, and 2010 Jaguar XK. However, it is still accessible from the selected car via links, so may be relevant.

Climate Controlled Seat Module

CAUTION: When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part number 3548-1358-00.

NOTE: If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the Warranty Policy and Procedures manual (section B1.2), or determine if any prior approval program is in operation, prior to the installation of a new module/component.

NOTE: Generic scan tools may not read the codes listed, or may read only five digit codes. Match the five digits from the scan tool to the first five digits of the seven digit code listed to identify the fault (the last two digits give additional information read by the manufacturer approved diagnostic system).

NOTE: When performing electrical voltage or resistance tests, always use a digital multimeter (DMM) accurate to three decimal places, and with an up-to-date calibration certificate. When testing resistance, always take the resistance of the DMM leads into account.

NOTE: Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.

NOTE: Inspect connectors for signs of water ingress, and pins for damage and/or corrosion.

NOTE: 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.

DTC	Description	Possible Cause	Action
B10B9-13	Blower Control - Circuit open	LH fans pwr circuit, open circuit LH fans rtn circuit, open circuit Connectors disconnected Connector pin damage Blower motor assembly open circuit Climate Control Seat Module failure	Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check LH fans pwr circuit for open circuit. Check LH fans rtn circuit for open circuit. Check for any disconnected connectors or damaged connector pins. Check blower motor assembly for open circuit. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification. Alternatively carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system.
B10B9-4B	Blower Control - Over temperature	Mechanical restriction in blower motor assembly LH fans pwr circuit, short to ground LH fans rtn circuit, short to ground Blower motor assembly, short to ground Climate Control Seat Module failure	Check for mechanical restriction or debris in blower motor assembly. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check LH fans pwr circuit for short to ground. Check LH fans rtn circuit for short to ground. Check blower motor assembly for short to ground. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification.
B1157-13	Blower Control "B" - Circuit open	RH fans pwr circuit, open circuit RH fans rtn circuit, open circuit Connectors disconnected Connector pin damage Blower motor assembly open circuit Climate Control Seat Module failure	Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check RH fans pwr circuit for open circuit. Check RH fans rtn circuit for open circuit. Check for any disconnected connectors or damaged connector pins. Check blower motor assembly for open circuit. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification. Alternatively carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system.
B1157-4B	Blower Control "B" - Over temperature	Mechanical restriction in blower motor assembly RH fans pwr circuit, short to ground RH fans rtn circuit, short to ground Blower motor assembly, short to ground Climate Control Seat Module failure	Check for mechanical restriction or debris in blower motor assembly. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check RH fans pwr circuit for short to ground. Check RH fans rtn circuit for short to ground. Check blower motor assembly for short to ground. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification.
B120E-13	Right Thermal Electric Device Control - Circuit open	RH seat back thermal electric device + circuit, open circuit RH seat back thermal electric device - circuit, open circuit RH seat cushion thermal electric device + circuit, open circuit RH seat cushion thermal electric device - circuit, open circuit Connectors disconnected Connector pin damage Climate seat backrest thermal electric device assembly, open circuit Climate seat cushion thermal electric device assembly, open circuit Climate Control Seat Module failure	Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check, RH seat back thermal electric device + circuit for open circuit. Check RH seat back thermal electric device - circuit for open circuit. Check RH seat cushion thermal electric device + circuit for open circuit. Check RH seat cushion thermal electric device - circuit for open circuit. Check for any disconnected connectors or damaged connector pins. Check climate seat backrest thermal electric device assembly for open circuit. Check climate seat cushion thermal electric device assembly for open circuit. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification. Alternatively carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system.
B120E-19	Right Thermal Electric Device Control - Circuit current above threshold	RH seat back thermal electric device + circuit, short to ground RH seat back thermal electric device - circuit, short to ground RH seat cushion thermal electric device + circuit, short to ground RH seat cushion thermal electric device - circuit, short to ground Climate seat backrest thermal electric device assembly, short to ground Climate seat cushion thermal electric device assembly, short to ground Climate Control Seat Module failure	Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check, RH seat back thermal electric device + circuit for short to ground. Check RH seat back thermal electric device - circuit for short to ground. Check RH seat cushion thermal electric device + circuit for short to ground. Check RH seat cushion thermal electric device - circuit for short to ground. Check climate seat backrest thermal electric device assembly for short to ground. Check climate seat cushion thermal electric device assembly for short to ground. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification. Alternatively carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system.
B120E-4B	Right Thermal Electric Device Control - Over temperature	Restriction in thermal electric device airpath RH seat back thermal electric device + circuit, short to ground RH seat back thermal electric device - circuit, short to ground RH seat cushion thermal electric device + circuit, short to ground RH seat cushion thermal electric device - circuit, short to ground Climate seat backrest thermal electric device assembly, short to ground Climate seat cushion thermal electric device assembly, short to ground Climate Control Seat Module failure	Check for blockage or restriction in thermal electric device airpath. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check, RH seat back thermal electric device + circuit for short to ground. Check RH seat back thermal electric device - circuit for short to ground. Check RH seat cushion thermal electric device + circuit for short to ground. Check RH seat cushion thermal electric device - circuit for short to ground. Check climate seat backrest thermal electric device assembly for short to ground. Check climate seat cushion thermal electric device assembly for short to ground. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification. Alternatively carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system.
B120F-13	Left Seat Cushion - Circuit open	The Climate Control Seat Module LH cushion sensor input circuit - open circuit Temperature sensor failure Climate Control Seat Module failure	Refer to the electrical circuit diagrams and check left seat cushion temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index
B120F-98	Left Seat Cushion - Component or system over temperature	The Climate Control Seat Module LH cushion sensor input circuit temperature exceeds 65 Degrees C continuously for more than 4 seconds during cooling The Climate Control Seat Module LH cushion sensor input circuit temperature is greater than 110 Degrees C for more than 4 seconds during heating Blocked or restricted thermal electric device fan exhaust vent Restricted thermal electric fan movement	Check for blockage or restriction in thermal electric device fan exhaust vent. Check for restricted thermal electric fan movement. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification.
B1223-13	Right Seat Cushion Temperature Sensor - Circuit open	RH seat cushion sensor circuit, open circuit RH seat cushion sensor rtn circuit, open circuit Connectors disconnected Connector pin damage Climate seat cushion temperature sensor assembly, open circuit Climate Control Seat Module failure	Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check, RH seat cushion sensor circuit for open circuit. Check RH seat cushion sensor rtn circuit for open circuit. Check for any disconnected connectors or damaged connector pins. Check Climate seat cushion temperature sensor assembly for open circuit. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification. Alternatively carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system.
B1224-13	Left Thermal Electric Device Control - Circuit open	LH seat back thermal electric device + circuit, open circuit LH seat back thermal electric device - circuit, open circuit LH seat cushion thermal electric device + circuit, open circuit LH seat cushion thermal electric device - circuit, open circuit Connectors disconnected Connector pin damage Climate seat backrest thermal electric device assembly, open circuit Climate seat cushion thermal electric device assembly, open circuit Climate Control Seat Module failure	Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check, LH seat back thermal electric device + circuit for open circuit. Check LH seat back thermal electric device - circuit for open circuit. Check LH seat cushion thermal electric device + circuit for open circuit. Check LH seat cushion thermal electric device - circuit for open circuit. Check for any disconnected connectors or damaged connector pins. Check climate seat backrest thermal electric device assembly for open circuit. Check climate seat cushion thermal electric device assembly for open circuit. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification. Alternatively carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system.
B1224-19	Left Thermal Electric Device Control - Circuit current above threshold	LH seat back thermal electric device + circuit, short to ground LH seat back thermal electric device - circuit, short to ground LH seat cushion thermal electric device + circuit, short to ground LH seat cushion thermal electric device - circuit, short to ground Climate seat backrest thermal electric device assembly, short to ground Climate seat cushion thermal electric device assembly, short to ground Climate Control Seat Module failure	Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check, LH seat back thermal electric device + circuit for short to ground. Check LH seat back thermal electric device - circuit for short to ground. Check LH seat cushion thermal electric device + circuit for short to ground. Check LH seat cushion thermal electric device - circuit for short to ground. Check climate seat backrest thermal electric device assembly for short to ground. Check climate seat cushion thermal electric device assembly for short to ground. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification. Alternatively carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system.
B1224-4B	Left Thermal Electric Device Control - Over temperature	Restriction in thermal electric device airpath LH seat back thermal electric device + circuit, short to ground LH seat back thermal electric device - circuit, short to ground LH seat cushion thermal electric device + circuit, short to ground LH seat cushion thermal electric device - circuit, short to ground Climate seat backrest thermal electric device assembly, short to ground Climate seat cushion thermal electric device assembly, short to ground Climate Control Seat Module failure	Check for blockage or restriction in thermal electric device airpath. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check, LH seat back thermal electric device + circuit for short to ground. Check LH seat back thermal electric device - circuit for short to ground. Check LH seat cushion thermal electric device + circuit for short to ground. Check LH seat cushion thermal electric device - circuit for short to ground. Check climate seat backrest thermal electric device assembly for short to ground. Check climate seat cushion thermal electric device assembly for short to ground. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification. Alternatively carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system.
B1225-13	Right Seat Back Temperature Sensor - Circuit open	RH seat back sensor circuit, open circuit RH seat back sensor rtn circuit, open circuit Connectors disconnected Connector pin damage Climate seat back temperature sensor assembly, open circuit Climate Control Seat Module failure	Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check, RH seat back sensor circuit for open circuit. Check RH seat back sensor rtn circuit for open circuit. Check for any disconnected connectors or damaged connector pins. Check Climate seat back temperature sensor assembly for open circuit. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification. Alternatively carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system.
B1229-13	Left Seat Back Temperature Sensor - Circuit open	LH seat back sensor circuit, open circuit LH seat back sensor rtn circuit, open circuit Connectors disconnected Connector pin damage Climate seat back temperature sensor assembly, open circuit Climate Control Seat Module failure	Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check, LH seat back sensor circuit for open circuit. Check LH seat back sensor rtn circuit for open circuit. Check for any disconnected connectors or damaged connector pins. Check Climate seat back temperature sensor assembly for open circuit. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification. Alternatively carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system.
B122A-11	Right Seat Cushion Blower Speed Sensor - Circuit short to ground	RH cushion fan speed, circuit short to ground Blower motor assembly, short to ground Climate Control Seat Module failure	Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check, RH cushion fan speed for circuit short to ground. Check blower motor assembly for short to ground. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification.
B122A-12	Right Seat Cushion Blower Speed Sensor - Circuit short to battery	RH cushion fan speed, circuit short to power Blower motor assembly, short to power Climate Control Seat Module failure	Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check, RH cushion fan speed for circuit short to power. Check blower motor assembly for short to power. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification.
B122B-11	Right Seat Back Blower Speed Sensor - Circuit short to ground	RH seat back fan speed, circuit short to ground Blower motor assembly, short to ground Climate Control Seat Module failure	Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check, RH seat back fan speed for circuit short to ground. Check blower motor assembly for short to ground. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification.
B122B-12	Right Seat Back Blower Speed Sensor - Circuit short to battery	RH seat back fan speed, circuit short to power Blower motor assembly, short to power Climate Control Seat Module failure	Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check, RH seat back fan speed for circuit short to power. Check blower motor assembly for short to power. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification.
B122C-11	Left Seat Cushion Blower Speed Sensor - Circuit short to ground	LH cushion fan speed, circuit short to ground Blower motor assembly, short to ground Climate Control Seat Module failure	Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check, LH cushion fan speed for circuit short to ground. Check blower motor assembly for short to ground. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification.
B122C-12	Left Seat Cushion Blower Speed Sensor - Circuit short to battery	LH cushion fan speed, circuit short to power Blower motor assembly, short to power Climate Control Seat Module failure	Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check, LH cushion fan speed for circuit short to power. Check blower motor assembly for short to power. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification.
B122D-11	Left Seat Back Blower Speed Sensor - Circuit short to ground	LH seat back fan speed, circuit short to ground Blower motor assembly, short to ground Climate Control Seat Module failure	Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check, LH seat back fan speed for circuit short to ground. Check blower motor assembly for short to ground. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification.
B122D-12	Left Seat Back Blower Speed Sensor - Circuit short to battery	LH seat back fan speed, circuit short to power Blower motor assembly, short to power Climate Control Seat Module failure	Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check, LH seat back fan speed for circuit short to power. Check blower motor assembly for short to power. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification.
B122E-13	Right Seat Cushion - Circuit open	Refer to the electrical circuit diagrams an The Climate Control Seat Module RH cushion sensor input circuit - open circuit Temperature sensor failure Climate Control Seat Module failure d check right seat cushion temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index
B122E-98	Right Seat Cushion - Component or system over temperature	The Climate Control Seat Module RH cushion sensor input circuit temperature exceeds 65 Degrees C continuously for more than 4 seconds during cooling The Climate Control Seat Module RH cushion sensor input circuit temperature is greater than 110 Degrees C for more than 4 seconds during heating Blocked or restricted thermal electric device fan exhaust vent Restricted thermal electric fan movement	Check for blockage or restriction in thermal electric device fan exhaust vent. Check for restricted thermal electric fan movement. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification.
B122F-13	Right Seat Back - Circuit open	Right seatback temperature sensor circuit - open circuit Temperature sensor failure Climate Control Seat Module failure	Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check right seatback temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index
B122F-98	Right Seat Back - Component or system over temperature	The Climate Control Seat Module RH seat back sensor input circuit temperature exceeds 65 Degrees C continuously for more than 4 seconds during cooling The Climate Control Seat Module RH seat back sensor input circuit temperature is greater than 110 Degrees C for more than 4 seconds during heating Blocked or restricted thermal electric device fan exhaust vent Restricted thermal electric fan movement	Check for blockage or restriction in thermal electric device fan exhaust vent. Check for restricted thermal electric fan movement. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification.
B1230-13	Left Seat Back - Circuit open	Left seatback temperature sensor circuit - open circuit Temperature sensor failure Climate Control Seat Module failure	Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check left seatback temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index
B1230-98	Left Seat Back - Component or system over temperature	The Climate Control Seat Module LH seat back sensor input circuit temperature exceeds 65 Degrees C continuously for more than 4 seconds during cooling The Climate Control Seat Module LH seat back sensor input circuit temperature is greater than 110 Degrees C for more than 4 seconds during heating Blocked or restricted thermal electric device fan exhaust vent Restricted thermal electric fan movement	Check for blockage or restriction in thermal electric device fan exhaust vent. Check for restricted thermal electric fan movement. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification.
B1231-7A	Right Seat - Fluid leak or seal failure	The Climate Control Seat Module has detected an input temperature difference greater than expected between RH seat back sensor and RH cushion sensor Climate seat back assembly airpath leaking Climate seat cushion assembly airpath leaking Seat assembly damaged	Check for blockage or restriction in seat back thermal electric device fan ducts. Check seat back thermal electric device fan exhaust vent is clear. Check for blockage or restriction in seat cushion thermal electric device fan ducts. Check seat cushion thermal electric device fan exhaust vent is clear. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification.
B1232-7A	Left Seat - Fluid leak or seal failure	The Climate Control Seat Module has detected an input temperature difference greater than expected between LH seat back sensor and LH cushion sensor Climate seat back assembly airpath leaking Climate seat cushion assembly airpath leaking Seat assembly damaged	Check for blockage or restriction in seat back thermal electric device fan ducts. Check seat back thermal electric device fan exhaust vent is clear. Check for blockage or restriction in seat cushion thermal electric device fan ducts. Check seat cushion thermal electric device fan exhaust vent is clear. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification.
B1235-13	Left Seat Cushion Temperature Sensor - Circuit open	LH seat cushion sensor circuit, open circuit LH seat cushion sensor rtn circuit, open circuit Connectors disconnected Connector pin damage Climate seat cushion temperature sensor assembly, open circuit Climate Control Seat Module failure	Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm the fault is present. Refer to the electrical circuit diagrams and check, LH seat cushion sensor circuit for open circuit. Check LH seat cushion sensor rtn circuit for open circuit. Check for any disconnected connectors or damaged connector pins. Check Climate seat cushion temperature sensor assembly for open circuit. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification. Alternatively carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system.
U0001-88	High Speed CAN Communication Bus - Bus off	High Speed CAN communication bus off	Refer to the electrical circuit diagrams and check the power and ground connections to the module. Using the manufacturer approved diagnostic system, complete a CAN network integrity test. Refer to the electrical circuit diagrams and check the CAN network. Alternatively carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system.
U0010-88	Medium Speed CAN Communication Bus - Bus off	Medium Speed CAN communication bus off	Refer to the electrical circuit diagrams and check the power and ground connections to the module. Using the manufacturer approved diagnostic system, complete a CAN network integrity test. Refer to the electrical circuit diagrams and check the CAN network. Alternatively carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system.
U0140-00	Lost Communication With Body Control Module - No sub type information	CAN harness link between Climate Control Seat Module and Central Junction Box malfunction The Climate Control Seat Module has not received the expected CAN signal from the Central Junction Box within the specified time interval	Using the manufacturer approved diagnostic system, check Central Junction Box for DTCs and refer to the relevant DTC Index. Using the manufacturer approved diagnostic system, carry out network integrity test. Refer to the electrical circuit diagrams and check Central Junction Box power and ground circuits for open circuit. Check CAN harness between Climate Control Seat Module and Central Junction Box, repair as necessary. Alternatively carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system.
U0142-00	Lost Communication With Body Control Module "B" - No sub type information	CAN harness link between Climate Control Seat Module and Rear Junction Box malfunction The Climate Control Seat Module has not received the expected CAN signal from the Rear Junction Box within the specified time interval	Using the manufacturer approved diagnostic system, check Rear Junction Box for DTCs and refer to the relevant DTC Index. Using the manufacturer approved diagnostic system, carry out network integrity test. Refer to the electrical circuit diagrams and check Rear Junction Box power and ground circuits for open circuit. Check CAN harness between Climate Control Seat Module and Rear Junction Box, repair as necessary. Alternatively carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system.
U0155-00	Lost Communication With Instrument Panel Cluster (IPC) Control Module - No sub type information	CAN harness link between Climate Control Seat Module and Instrument Cluster network malfunction The Climate Control Seat Module has not received the expected CAN signal from the Instrument Cluster within the specified time interval	Using the manufacturer approved diagnostic system, check Instrument Cluster for DTCs and refer to the relevant DTC Index. Using the manufacturer approved diagnostic system, carry out network integrity test. Refer to the electrical circuit diagrams and check Instrument Cluster power and ground circuits for open circuit. Check CAN harness between Climate Control Seat Module and Instrument Cluster, repair as necessary. Alternatively carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system.
U0156-00	Lost Communication With Information Center "A" - No sub type information	CAN harness link between Climate Control Seat Module and Information and Entertainment Control Module network malfunction The Climate Control Seat Module has not received the expected CAN signal from the Information and Entertainment Control Module within the specified time interval	Using the manufacturer approved diagnostic system, check Information and Entertainment Control Module for DTCs and refer to the relevant DTC Index. Using the manufacturer approved diagnostic system, carry out network integrity test. Refer to the electrical circuit diagrams and check Information and Entertainment Control Module power and ground circuits for open circuit. Check CAN harness between Climate Control Seat Module and Information and Entertainment Control Module, repair as necessary. Alternatively carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system.
U0300-00	Internal Control Module Software Incompatibility - No sub type information	Incorrect or invalid software has been installed	Using the manufacturer approved diagnostic system, re-configure the Climate Control Seat Module and the Rear Junction Box. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification. Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect.
U0401-00	Invalid Data Received From ECM/PCM - No sub type information	The Engine Control Module has transmitted engine speed quality factor CAN signal at a specific value for a greater than expected time period.	Using the manufacturer approved diagnostic system, check Engine Control Module for DTCs and refer to the relevant DTC Index.
U2101-00	Control Module Configuration Incompatible - No sub type information	Calibration incomplete/corrupt	Using the manufacturer approved diagnostic system, re-configure the Climate Control Seat Module and the Rear Junction Box. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification.
U3000-04	Control Module - System internal failures	Climate Control Seat Module failure Climate Control Seat Module microprocessor failed internal ROM and/or RAM checksum test	Refer to the new module/component installation note at the top of the DTC Index if the Climate Control Seat Module is suspect.
U3003-62	Battery Voltage - Signal compare failure	Mismatch in battery voltage of 2 volts or more between the measured battery voltage at the Climate Control Seat Module and the battery voltage signal sent from the Rear Junction Box	Refer to the electrical circuit diagrams and check that power supply voltage at Climate Control Seat Module and Rear Junction Box is not different by more than 2 volts. Rectify as required. Carry out On Demand Self Test (ODST) using manufacturer approved diagnostic system to confirm rectification. Alternatively carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system.