SEATS
The complexity of the electronics involved with the seating, of which the climate controlled seat module (CCSM) is a part, and the multiplexed communication network which are connected to it preclude the use of workshop general electrical test equipment. Therefore, reference should be made to the Landrover Approved Diagnostic System for detailed instructions on testing the seating.
The Landrover Approved Diagnostic System systematically tests and analyses all functions and the various systems affected by it.
Where a fault is indicated, some basic diagnostic methods may be necessary to confirm that connections are good and that wiring is not damaged before installing a new component.
Note. If the control module is suspect and the vehicle remains under manufacturer warranty, refer to the Warranty Policy and Procedures information or determine if any prior approval program is in operation, prior to the installation of a new module.
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 |
|---|---|---|---|
| B10B913 | Blower control | The drivers seat cushion heater and blower assembly circuit open circuit. The drivers seat backrest heater and blower assembly circuit open circuit. CCSM failure. | Check the drivers seat heater and blower assembly for the cushion and backrest circuit. Refer to the electrical information. Install a new heater and blower assembly if necessary. Clear the DTCs and test for normal operation. Check the CCSM ground supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| B10B94B | Blower control | The drivers seat cushion heater and blower assembly circuit short circuit to ground. The drivers seat backrest heater and blower assembly circuit short circuit to ground. Mechanical restriction in the heater and blower assembly housing CCSM failure. | Check the drivers seat heater and blower assembly for the cushion and backrest circuit. Refer to the electrical information. Install a new heater and blower assembly if necessary. Clear the DTCs and test for normal operation. Check the CCSM ground supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| B114B13 | Passenger thermal electric device control | The passenger seat cushion heater and blower assembly circuit open. The passenger seat backrest heater and blower assembly circuit open circuit. Passenger seat heater and blower assembly failure. CCSM failure. | Check the passenger seat heater and blower assembly for the cushion and backrest circuit. Refer to the electrical information. Install a new heater and blower assembly if necessary. Clear the DTCs and test for normal operation. Check the CCSM ground supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| B114B19 | Passenger thermal electric device control | The passenger seat cushion heater and blower assembly circuit short circuit to ground. The passenger seat backrest heater and blower assembly short circuit to ground. Passenger seat heater and blower assembly failure. CCSM failure. | Check the passenger seat heater and blower assembly for the cushion and backrest circuit. Refer to the electrical information. Install a new heater and blower assembly if necessary. Clear the DTCs and test for normal operation. Check the CCSM ground supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| B114B4B | Passenger thermal electric device control | Passenger seat cushion heater and blower assembly circuit short circuit to ground. The passenger seat backrest heater and blower assembly short circuit to ground. Passenger seat heater and blower assembly failure. CCSM failure. Possible restricted duct. | Check the passenger seat heater and blower assembly for the cushion and backrest circuit. Refer to the electrical information. Install a new heater and blower assembly if necessary. Clear the DTCs and test for normal operation. Check the passenger seat and make sure nothing is restricting the seat heater and blower assembly blower duct Rectify as necessary. Clear the DTCs and test for normal operation. Check the CCSM ground supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| B114C13 | Driver thermal electric device control | The drivers seat cushion heater and blower assembly circuit open circuit. The drivers seat backrest heater and blower assembly circuit open circuit. CCSM failure. | Check the drivers seat heater and blower assembly for the cushion and backrest circuit. Refer to the electrical information. Install a new heater and blower assembly if necessary. Clear the DTCs and test for normal operation. Check the CCSM ground supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| B114C19 | Driver thermal electric device control | The drivers seat cushion heater and blower assembly circuit short circuit to ground. The drivers seat backrest heater and blower assembly circuit short circuit to ground. Mechanical restriction in the heater and blower assembly housing CCSM failure. | Check the drivers seat heater and blower assembly for the cushion and backrest circuit. Refer to the electrical information. Install a new heater and blower assembly if necessary. Clear the DTCs and test for normal operation. Check the CCSM ground supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| B114C4B | Driver thermal electric device control | The drivers seat cushion heater and blower assembly circuit short circuit to ground. The drivers seat backrest heater and blower assembly circuit short circuit to ground. Mechanical restriction in the heater and blower assembly housing Possible restricted duct. CCSM failure. | Check the drivers seat heater and blower assembly for the cushion and backrest circuit. Refer to the electrical information. Install a new heater and blower assembly if necessary. Clear the DTCs and test for normal operation. Check the driver seat cushion and backrest, make sure nothing is restricting the seat heater and blower assembly blower duct. Rectify as necessary. Clear the DTCs and test for normal operation. Check the CCSM ground supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| B114D11 | Passenger seat cushion blower speed sensor | The passenger seat cushion seat heater and blower assembly circuit short circuit to ground. Internal motor failure. CCSM failure. | Check the passenger seat cushion heater and blower assembly circuit. Refer to the electrical information. Install a new heater and blower assembly if necessary. Clear the DTCs and test for normal operation. Check the CCSM ground supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| B114D12 | Passenger seat cushion blower speed sensor | The passenger seat cushion seat heater and blower assembly circuit short circuit to ground. Internal motor failure. CCSM failure. | Check the passenger seat cushion heater and blower assembly circuit. Refer to the electrical information. Install a new heater and blower assembly if necessary. Clear the DTCs and test for normal operation. Check the CCSM ground supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| B114E11 | Passenger seat back blower speed sensor | The passenger seat backrest seat heater and blower assembly circuit short circuit to ground. Internal motor failure. CCSM failure. | Check the passenger seat backrest heater and blower assembly circuit. Refer to the electrical information. Install a new heater and blower assembly if necessary. Clear the DTCs and test for normal operation. Check the CCSM ground supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| B114E12 | Passenger seat back blower speed sensor | The passenger seat backrest seat heater and blower assembly circuit short circuit to ground. Internal motor failure. CCSM failure. | Check the passenger seat backrest heater and blower assembly circuit. Refer to the electrical information. Install a new heater and blower assembly if necessary. Clear the DTCs and test for normal operation. Check the CCSM ground supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| B114F11 | Driver seat cushion blower speed sensor | The driver seat cushion seat heater and blower assembly circuit short circuit to ground. Internal motor failure. CCSM failure. | Check the driver seat cushion heater and blower assembly circuit. Refer to the electrical information. Install a new heater and blower assembly if necessary. Clear the DTCs and test for normal operation. Check the CCSM ground supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| B114F12 | Driver seat cushion blower speed sensor | The driver seat cushion seat heater and blower assembly circuit short circuit to ground. Internal motor failure. CCSM failure. | Check the driver seat cushion heater and blower assembly circuit. Refer to the electrical information. Install a new heater and blower assembly if necessary. Clear the DTCs and test for normal operation. Check the CCSM ground supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| B115011 | Driver seat back blower speed sensor | The driver seat backrest seat heater and blower assembly circuit short circuit to ground. Internal motor failure. CCSM failure. | Check the driver seat backrest heater and blower assembly circuit. Refer to the electrical information. Install a new heater and blower assembly if necessary. Clear the DTCs and test for normal operation. Check the CCSM ground supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| B115012 | Driver seat back blower speed sensor | The driver seat backrest seat heater and blower assembly circuit short circuit to ground. Internal motor failure. CCSM failure. | Check the driver seat backrest heater and blower assembly circuit. Refer to the electrical information. Install a new heater and blower assembly if necessary. Clear the DTCs and test for normal operation. Check the CCSM ground supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| B115113 | Passenger seat cushion | Passenger seat cushion seat fan motor short circuit to ground. | Check the front seat heater and blower assembly circuit. Refer to the electrical information. Install a new front seat heater and blower assembly if necessary. Clear the DTCs and test for normal operation. |
| B115198 | Passenger seat cushion | Passenger seat cushion over temperature fault. Possible restricted duct. | Check the passenger side front seat and make sure nothing is restricting the seat fan motor blower duct. Rectify as necessary. Clear the DTCs and test for normal operation. |
| B115213 | Passenger seat back | Passenger seat back seat fan motor short circuit to ground. | Check the front seat heater and blower assembly circuit. Refer to the electrical information. Install a new front seat heater and blower assembly if necessary. Clear the DTCs and test for normal operation. |
| B115298 | Passenger seat back | Passenger seat back over temperature fault. Possible restricted duct. | Check the passenger side front seat and make sure nothing is restricting the seat fan motor blower duct. Rectify as necessary. Clear the DTCs and test for normal operation. |
| B115313 | Driver seat cushion | Passenger seat cushion seat fan motor short circuit to ground. | Check the front seat heater and blower assembly circuit. Refer to the electrical information. Install a new front seat heater and blower assembly if necessary. Clear the DTCs and test for normal operation. |
| B115398 | Driver seat cushion | Driver seat cushion over temperature fault. Possible restricted duct. | Check the driver side front seat and make sure nothing is restricting the seat fan motor blower duct. Rectify as necessary. Clear the DTCs and test for normal operation. |
| B115413 | Driver seat back | Passenger seat cushion seat fan motor short circuit to ground. | Check the driver front seat heater and blower assembly circuit. Refer to the electrical information. Install a new front seat heater and blower assembly if necessary. Clear the DTCs and test for normal operation. |
| B115498 | Driver seat back | Driver seat back over temperature fault. Possible restricted duct. | Check the driver side front seat and make sure nothing is restricting the seat fan motor blower duct. Rectify as necessary. Clear the DTCs and test for normal operation. |
| B11557A | Passenger seat | Possible restricted blower duct on the passenger cushion heater and blower assembly. Possible restricted blower duct on the passenger backrest heater and blower assembly. Possible blower duct adrift. | Check the passenger side front seat and make sure the blower duct is not adrift from the heater and blower assembly. Make sure nothing is restricting the seat heater and blower assembly blower duct check the exhaust outlet of each heater and blower assembly. Rectify as necessary. Clear the DTCs and test for normal operation. |
| B11567A | Driver seat | Possible restricted blower duct on the driver cushion heater and blower assembly. Possible restricted blower duct on the driver backrest heater and blower assembly. Possible blower duct adrift. | Check the driver side front seat and make sure the blower duct is not adrift from the heater and blower assembly. Make sure nothing is restricting the seat heater and blower assembly blower duct check the exhaust outlet of each heater and blower assembly. Rectify as necessary. Clear the DTCs and test for normal operation. |
| B115713 | Blower control B | The passenger seat cushion heater and blower assembly circuit open circuit. The passenger seat backrest heater and blower assembly circuit open circuit. CCSM failure. | Check the passenger seat heater and blower assembly for the cushion and backrest circuit. Refer to the electrical information. Install a new heater and blower assembly if necessary. Clear the DTCs and test for normal operation. Check the CCSM ground supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| B11574B | Blower control B | The passenger seat cushion heater and blower assembly circuit short circuit to ground. The passenger seat backrest heater and blower assembly circuit short circuit to ground. Mechanical restriction in the heater and blower assembly housing CCSM failure. | Check the passenger seat heater and blower assembly for the cushion and backrest circuit. Refer to the electrical information. Install a new heater and blower assembly if necessary. Clear the DTCs and test for normal operation. Check the CCSM ground supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| U001088 | Medium speed CAN communication bus | CAN signal fault. Possible open circuit. Faulty control module. | Check the CAN circuits. Refer to the electrical information. Rectify as necessary. Clear the DTCs and test for normal operation. Check the control module power supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| U015500 | Lost communication with instrument panel cluster (IPC) control module | CAN signal fault. | Check the CAN circuits. Refer to the electrical information. Rectify as necessary. Clear the DTCs and test for normal operation. |
| U030000 | Internal control module software incompatibility | Module not Configured. Incorrect module fitted. Faulty control module. | Incorrect or invalid software downloaded. Re-flash the software with the correct application code for relevant vehicle. |
| U210100 | Control module configuration incompatible | Module not Configured. Incorrect module fitted. | Check the control module power supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| U210538 | Switch pack signal A | Possible open circuit. Short circuit to power. Pulse width modulated (PWM) signal from switchpack to CCSM is potentially corrupt. | Check the driver PWM signals and circuits. Refer to the electrical information. Rectify as necessary. Clear the DTCs and test for normal operation. |
| U210638 | Switch pack signal B | Possible open circuit. Short circuit to power.. PWM signal from switchpack to CCSM is potentially corrupt. | Check the passenger PWM signals and circuits. Refer to the electrical information. Rectify as necessary. Clear the DTCs and test for normal operation. |
| U300004 | Control module | CCSM failure. | Check the control module power supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the control module. Refer to the warranty policy and procedures information if a module is suspect. |
| U300362 | Battery voltage | CAN signal fault. Power supply fault IPC signal fault | Check the IPC power supply and relay circuits. Refer to the electrical information. Rectify as necessary. Clear the DTC. Cycle the ignition and retest. If the DTC resets suspect the IPC. Refer to the warranty policy and procedures information if a module is suspect. |
VEHICLES FITTED WITH CLIMATIC SEATS