Driver/Passenger Front Seat Module (DSM/PSM)

WARNING: This page is about a different car, the 2012 Land Rover Range Rover Sport and 2011 Land Rover Range Rover Sport. However, it is still accessible from the selected car via links, so may be relevant.

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: If the 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 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 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).

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.

The table below lists all Diagnostic Trouble Codes (DTCs) that could be logged in the Drivers/Passenger Seat Modules, for additional Diagnosis and Testing information refer to the relevant Diagnosis and Testing Information. Refer to SEATS .

DTC	Description	Possible cause	Action
B1060-11	Seat Headrest Motor Output - Circuit short to ground	Circuit short to ground	Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the seat headrest motor circuit
B1060-15	Seat Headrest Motor Output - Circuit short to battery or open	Circuit short to battery or open	Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the seat headrest motor circuit
B1064-31	Seat Headrest Motor Sensor - no signal	No signal from sensor Sensor/motor malfunction Harness/connector problem	Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the seat headrest motor sensor circuit
B106D-24	Headrest Up Switch - Signal stuck high	Signal stuck high Switch malfunction	Check the switch function. Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the switch circuit
B106E-24	Headrest Down Switch - Signal stuck high	Signal stuck high Switch malfunction	Check the switch function. Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the switch circuit
B1087-83	LIN Bus "A" - value of signal protection calculation incorrect	LIN bus checksum error, value of signal protection calculation incorrect Generic LIN bus failure	Check for other LIN Bus related DTCs. Refer to the electrical circuit diagrams and check the LIN Bus circuit
B1087-86	LIN Bus "A" - Signal invalid	Generic LIN bus failure Signal invalid LIN bus Bit error / Parity Error /Synch Error	Check for other LIN Bus related DTCs. Refer to the electrical circuit diagrams and check the LIN Bus circuit
B1087-87	LIN Bus "A" - missing message	Generic LIN bus failure Missing message Slave not responding or LIN bus short circuit to ground or power	Check for other LIN Bus related DTCs. Refer to the electrical circuit diagrams and check the LIN Bus circuit
B1B86-11	Seat Height Motor Relay - Circuit short to ground	Circuit short to ground	Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the seat height motor circuit
B1B86-15	Seat Height Motor Relay - Circuit short to battery or open	Circuit short to power, open circuit	Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the seat height motor circuit
B1B87-31	Seat Height Motor Speed/Position Sensor - no signal	No signal from sensor Sensor/motor malfunction Harness/connector problem	Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the seat headrest motor sensor circuit
B1B88-11	Seat Slide Motor Relay - Circuit short to ground	Circuit short to ground	Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the seat slide motor relay circuit
B1B88-15	Seat Slide Motor Relay - Circuit short to battery or open	Circuit short to power or open circuit	Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the seat slide motor relay circuit
B1B89-31	Seat Slide Motor Speed/Position Sensor - no signal	No signal from sensor Sensor/motor malfunction Harness/connector problem	Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the seat slide motor relay circuit
B1B90-11	Seat Tilt Motor Relay - Circuit short to ground	Circuit short to ground	Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the seat tilt motor relay circuit
B1B90-15	Seat Tilt Motor Relay - Circuit short to battery or open	Circuit short to power or open circuit	Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the seat tilt motor relay circuit
B1B91-31	Seat Tilt Motor Speed/Position Sensor - no signal	No signal from sensor Sensor/motor malfunction Harness/connector problem	Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the seat tilt motor speed sensor circuit
B1B92-11	Seat Recline Motor Relay - Circuit short to ground	Circuit short to ground	Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the seat recline motor relay circuit
B1B92-15	Seat Recline Motor Relay - Circuit short to battery or open	Circuit short to power or open circuit	Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the seat recline motor relay circuit
B1B93-31	Seat Recline Motor Speed/Position Sensor - no signal	No signal from sensor Sensor/motor malfunction Harness/connector problem	Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the seat recline motor speed sensor circuit
B1B94-24	Seat Height Up Switch - Signal stuck high	Signal stuck high Switch malfunction	Check the switch function. Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the switch circuit
B1B95-24	Seat Height Down Switch - Signal stuck high	Signal stuck high Switch malfunction	Check the switch function. Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the switch circuit
B1B96-24	Seat Slide Forward Switch - Signal stuck high	Signal stuck high Switch malfunction	Check the switch function. Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the switch circuit
B1B97-24	Seat Slide Backward Switch - Signal stuck high	Signal stuck high Switch malfunction	Check the switch function. Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the switch circuit
B1B98-24	Seat Tilt Up Switch - Signal stuck high	Signal stuck high Switch malfunction	Check the switch function. Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the switch circuit
B1B99-24	Seat Tilt Down Switch - Signal stuck high	Signal stuck high Switch malfunction	Check the switch function. Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the switch circuit
B1C00-24	Seat Recline Up Switch - Signal stuck high	Signal stuck high Switch malfunction	Check the switch function. Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the switch circuit
B1C01-24	Seat Recline Down Switch - Signal stuck high	Signal stuck high Switch malfunction	Check the switch function. Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the switch circuit
B1C02-24	Memory Store Switch - Signal stuck high	Signal stuck high Switch malfunction	Check the switch function. Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the switch circuit
B1C03-24	Memory #1 Switch - Signal stuck high	Signal stuck high Switch malfunction	Check the switch function. Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the switch circuit
B1C04-24	Memory #2 Switch - Signal stuck high	Signal stuck high Switch malfunction	Check the switch function. Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the switch circuit
B1C05-24	Memory #3 Switch - Signal stuck high	Signal stuck high Switch malfunction	Check the switch function. Check the seat wiring harness/connectors for security/integrity. Refer to the electrical circuit diagrams and check the switch circuit
U0010-88	Medium speed CAN Communication Bus - Bus off	CAN signal fault. Possible open circuit. Faulty Control module.	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
U0140-00	Lost Communication With Body Control Module - No sub type information	No sub type information	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 between the Central Junction Box and Seat Control Module
U0142-00	Lost Communication With Body Control Module "B" - No sub type information	No sub type information	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 between the Central Junction Box and Seat Control Module
U0155-00	Lost Communication With Instrument Panel Cluster (IPC) Control Module - No sub type information	No sub type information	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 between the Instrument Panel Cluster and Seat Control Module
U0199-00	Lost Communication With "Door Control Module A" - No sub type information	No sub type information	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 between the Door Control Module and Seat Control Module
U0300-00	Software Incompatibility - No sub type information	No sub type information	Check the module configuration using the approved diagnostic system. Check that the module software versions are the latest release and update as necessary
U1A14-49	CAN Initialization Failure - Internal electronic failure	Internal electronic failure	Suspect the driver's seat module, check and install a new module as required, Refer to the warranty policy and procedures information if a module is suspect
U1A4C-00	Build / End of Line mode Active - No sub type information	Vehicle configuration incorrect	Check the module configuration using the approved diagnostic system
U3000-49	Control Module - Internal electronic failure	Internal electronic failure Internal RAM/ROM error	Renew the Control module. Refer to the warranty policy and procedures information if a module is suspect
U3001-46	Control Module Improper Shutdown - calibration / parameter memory failure	Calibration/parameter memory failure Any motor activation (slide, height and recline axis) has been interrupted by an control module power disconnection while in manufacturing mode	Clear the DTC and retest. If the problem persists, configure the module using the manufacturers approved diagnostic system
U3002-81	Vehicle Identification Number - invalid serial data received	Invalid serial data received	Configure the module using the manufacturers approved diagnostic system
U3003-16	Battery Voltage - Circuit voltage below threshold	Battery voltage below threshold (8 volts)	Check vehicle battery and charging system. Refer to BATTERY AND CHARGING SYSTEM - GENERAL INFORMATION . Refer to the electrical circuit diagrams and check the power supply circuits to the module
U3003-17	Battery Voltage - Circuit voltage above threshold	Battery voltage above threshold	Check vehicle battery and charging system. Refer to BATTERY AND CHARGING SYSTEM - GENERAL INFORMATION . Refer to the electrical circuit diagrams and check the power supply circuits to the module