Gear Shift Module (GSM)

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.

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

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 programme 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: When performing voltage or resistance tests, always use a digital multimeter accurate to three decimal places and with a current calibration certificate. When testing resistance, always take the resistance of the digital multimeter 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

NOTE: Where an 'on demand self-test' is referred to, this can be accessed via the 'DTC monitor' tab on the manufacturers approved diagnostic system

The table below lists all diagnostic trouble codes (DTCs) that could be logged in the gear shift module, for additional diagnosis and testing information. For additional information, refer to EXTERNAL CONTROLS .

DTC	Description	Possible Causes	Action
B1087-08	LIN Bus ""A"" - Bus Signal / Message Failures	LIN bus 'A' Error	Refer to the electrical circuit diagrams and check LIN input signal circuit for short circuit to ground, short circuit to power, open circuit, high resistance
B1087-81	LIN Bus ""A"" - invalid serial data received	Transmission control module LIN message error - LIN/CAN signal mismatch (complement fault)	Refer to the electrical circuit diagrams and check LIN input signal circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Check transmission control module for related diagnostic trouble codes and refer to relevant diagnostic trouble code index
B1087-82	LIN Bus ""A"" - alive / sequence counter incorrect / not updated	Transmission control module LIN message error - alive counter fault	Refer to the electrical circuit diagrams and check LIN input signal circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Check transmission control module for related diagnostic trouble codes and refer to relevant diagnostic trouble code index
B1087-83	LIN Bus ""A"" - value of signal protection calculation incorrect	Transmission control module LIN message error - checksum fault	Refer to the electrical circuit diagrams and check LIN input signal circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Check transmission control module for related diagnostic trouble codes and refer to relevant diagnostic trouble code index
B1087-87	LIN Bus ""A"" - missing message	Transmission control module LIN message error - missing message	Refer to the electrical circuit diagrams and check LIN input signal circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Check transmission control module for related diagnostic trouble codes and refer to relevant diagnostic trouble code index
B1142-62	Ignition Status 1 - signal compare failure	Hardwired ignition and CAN powermode signals differ	Refer to the electrical circuit diagrams and check ignition supply circuit for short circuit to ground, short circuit to power, open circuit, high resistance
B123C-01	Dynamic Stability Control Status Indicator - General Electrical Failure	Dynamic stability control LED failure	Check transmission shift module, check operation of the dynamic stability control button status illumination, check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
B123D-64	Dynamic Stability Control Button - signal plausibility failure	Dynamic stability control button may be stuck, may be due to a faulty button or to the user holding the button for a prolonged period (dynamic stability control button detected as pressed for 30 seconds) (S1)	Check for normal dynamic stability control button functionality. If it operates normally then no further action required. If the dynamic stability control button fails to operate normally then may be due to an internal fault, check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
B123F-01	Adaptive Speed Limiter Mode Indicator - General Electrical Failure	Adaptive speed limiter LED failure	Check transmission shift module, check operation of the active speed limiter button status illumination, check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
B1241-64	Adaptive Speed Limiter Button - signal plausibility failure	May be due to a faulty button or to the user holding the button for a prolonged period (adaptive speed limiter button detected as pressed for 30 seconds)	Check for normal adaptive speed limiter button functionality. If it operates normally then no further action required. If the adaptive speed limiter button fails to operate normally then may be due to an internal fault, check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
B1242-64	Winter Button - signal plausibility failure	May be due to a faulty button or to the user holding the button for a prolonged period (winter button detected as pressed for 30 seconds)	Check for normal winter button functionality. If it operates normally then no further action required. If the winter button fails to operate normally then may be due to an internal fault, check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
B1243-01	Winter Button Mode Indicator - General Electrical Failure	Winter button LED failure	Check transmission shift module, check operation of the winter button status illumination, check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
B1244-64	Dynamic / Sport Button - signal plausibility failure	May be due to a faulty button or to the user holding the button for a prolonged period (dynamic/performance button detected as pressed for 30 seconds)	Check for normal dynamic mode button functionality. If it operates normally then no further action required. If the dynamic mode button fails to operate normally then may be due to an internal fault, check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
B1245-01	Dynamic / Sport Button Mode Indicator - General Electrical Failure	Dynamic/Sport button LED failure	Check transmission shift module, check operation of the dynamic mode button status illumination, check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
C113A-62	Wakeup Control - signal compare failure	Hardwired delayed power and CAN bus engine running status differ	Refer to the electrical circuit diagrams and check hardwired wake-up (start/stop illumination) input circuit for short circuit to ground, short circuit to power, open circuit, high resistance
P0603-44	Internal Control Module Keep Alive Memory (KAM) Error - data memory failure	Transmission shift module internal failure	Check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
P0604-44	Internal Control Module Random Access Memory (RAM) Error - data memory failure	Transmission shift module internal failure	Check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
P0605-45	Internal Control Module Read Only Memory (ROM) Error - program memory failure	Transmission shift module internal failure	Check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
P0606-2F	ECM / PCM Processor - signal erratic	Transmission shift module internal failure	Check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
P0606-47	ECM / PCM Processor - watchdog / safety Micro controller failure	Transmission shift module internal failure	Check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
P0705-09	Transmission Range Sensor A Circuit (PRNDL Input) - Component Failures	PRNDS sensor fault	Check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
P0705-46	Transmission Range Sensor A Circuit (PRNDL Input) - calibration / parameter memory failure	PRNDS calibration missing/invalid	Check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
P0705-86	Transmission Range Sensor A Circuit (PRNDL Input) - signal invalid	Received signal incorrect	Check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
P0814-01	Transmission Range Display Circuit - General Electrical Failure	PRNDS LED failure	Check transmission shift module, check operation of PRNDS display, check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
P081C-64	Park Input Circuit - signal plausibility failure	Hardwired park and transmission control module position display signals are not consistent	Refer to electrical circuit diagrams and check park input signal circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Check transmission control module for park signal failure diagnostic trouble codes. Check operation of signal - should be set (equal to vehicle supply voltage) when transmission in P and un-set (equal to vehicle ground) when transmission in R, N, D, S
P084F-11	Park / Neutral Switch Output Circuit - circuit short to ground	Park/neutral signal circuit short circuit to ground	Refer to the electrical circuit diagrams and check the park/neutral signal circuit for short circuit to ground
P084F-15	Park / Neutral Switch Output Circuit - circuit short to battery or open	Park/neutral signal circuit short circuit to power or open circuit	Refer to the electrical circuit diagrams and check the park/neutral signal circuit for short circuit to power, open circuit or high resistance
P176A-01	Transmission Range Selector Up and Down Position Circuit - General Electrical Failure	Raise/lower mechanism up/down sensor fault	Cycle ignition, clear DTC and retest If fault persists, check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
P176A-13	Transmission Range Selector Up and Down Position Circuit - circuit open	Raise/lower mechanism current sense fault	Cycle ignition, clear DTC and retest If fault persists, check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
P176A-19	Transmission Range Selector Up and Down Position Circuit - circuit current above threshold	Raise/lower mechanism motor over current	Cycle ignition, clear DTC and retest If fault persists, check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
P176A-94	Transmission Range Selector Up and Down Position Circuit - unexpected operation	Motor current detected while gear selector knob not moving up or down	Cycle ignition, clear DTC and retest If fault persists, check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
P176B-71	Transmission Range Selector Up and Down Position Control Error - actuator stuck	NOTE: Can be due to driver abuse! Raise/lower failure. If diagnostic trouble code is detected then test raise/lower functionality to confirm OK with no abuse forces or obstructions present. Only replace transmission shift module if raise/lower issues are present with no abuse forces or obstructions present	Check that no visible obstructions are present and test for normal raise/lower operation. If transmission shift module raises and lowers normally then no further action is required. If the transmission shift module fails to raise and lower normally even though no obstructions or abuse forces are present then may be due to an internal fault. Check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
P176C-07	Transmission Range Selector Lock Control Error - Mechanical Failures	Gear selector movement detected while locked. Park lock failure, transmission shift module has detected that the selector has been turned while a lock request has been received from the transmission control module. This is usually due to the driver releasing the brake pedal with the selector in between positions and does not represent a fault	Check for normal shift interlock lock/unlock operation, and check for short circuit diagnostic trouble codes. If the transmission shift module locks and unlocks normally then no further action is required. If the transmission shift module fails to lock normally when fully in the P position then may be due to an internal fault. Check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
P176C-11	Transmission Range Selector Lock Control Error - circuit short to ground	Short circuit to ground detected while solenoid active	Check transmission shift module, check operation of the shift interlock, check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
P176C-12	Transmission Range Selector Lock Control Error - circuit short to battery	Short circuit to power detected while solenoid active	Check transmission shift module, check operation of the shift interlock, check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
P176C-73	Transmission Range Selector Lock Control Error - actuator stuck closed	Solenoid unlock failure. This may be due either, to the user applying a prolonged rotational force against the selector lock mechanism while it is attempting to unlock, or due to an internal failure	Check for normal shift interlock lock/unlock operation. If the transmission shift module locks and unlocks normally then no further action is required. If the transmission shift module fails to lock and unlock normally then may be due to an internal fault. Check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
U0001-88	High Speed CAN Communication Bus - bus off	High speed CAN failure - bus off	Refer to the electrical circuit diagrams and check CAN bus for short circuit to ground, short circuit to power, open circuit, high resistance
U0100-00	Lost Communication With ECM/PCM ""A"" - no sub type information	Lost communication with the engine control module - engine speed signal not received	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 engine control module and the transmission shift module. Check the engine control module for related diagnostic trouble codes and refer to the relevant diagnostic trouble code index
U0101-00	Lost Communication with TCM - no sub type information	Lost communication with the transmission control module - transmission control module_PosDisp signal not received	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 transmission control module and the transmission shift module. Check the transmission control module for related diagnostic trouble codes and refer to the relevant diagnostic trouble code index
U0121-00	Lost Communication With Anti-Lock Brake System (ABS) Control Module - no sub type information	Lost communication with the ABS control module - message containing TCSSwitchSports is not received	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 ABS control module and the transmission shift module. Check the ABS control module for related diagnostic trouble codes and refer to the relevant diagnostic trouble code index
U0139-00	Lost Communication With Suspension Control Module ""B"" - no sub type information	Lost communication with the continuously variable damping module - message containing adaptive damping module signals not received	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 continuously variable damping module and the transmission shift module. Check the continuously variable damping module for related diagnostic trouble codes and refer to the relevant diagnostic trouble code index
U0155-00	Lost Communication With Instrument Panel Cluster (IPC) Control Module - missing message	Lost communication with instrument panel cluster - message containing powermode not received	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 control module and the transmission shift module. Check the instrument panel cluster control module for related diagnostic trouble codes and refer to the relevant diagnostic trouble code index
U0300-00	Internal Control Module Software Incompatibility - no sub type information	Invalid master configuration ID received	Re-configure the auxiliary junction box using the manufacturer approved diagnostic system. Clear diagnostic trouble code and re-test, if diagnostic trouble code remains, install a new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
U0401-92	Invalid Data Received From ECM/PCM - performance or incorrect operation	Jaguar drive optimization winter/performance modes not available. Fault message if a Jaguar drive optimization mode button is pressed - message received from engine control module indicates it is unable to support Jaguar drive optimization modes	Check engine control module for related diagnostic trouble codes and refer to the relevant diagnostic trouble code index
U0402-64	Invalid Data Received from Transmission control module - signal plausibility failure	Implausible lock request received	Unexpected lock data received from transmission control module. Check for additional communication diagnostic trouble codes and follow relevant service actions. If no other communication diagnostic trouble codes present, check transmission control module for related diagnostic trouble codes and refer to the relevant diagnostic trouble code index
U0402-81	Invalid Data Received from Transmission control module - invalid serial data received	Transmission control module CAN message error - complement fault	Check transmission control module for diagnostic trouble codes and refer to the relevant diagnostic trouble code index. If no fault found then refer to the electrical circuit diagrams and check CAN bus for short circuit to ground, short circuit to power, open circuit, high resistance
U0402-82	Invalid Data Received from Transmission control module - alive / sequence counter incorrect / not updated	Alive counter fault detected (stuck, jumps or fault flag)	Check transmission control module for diagnostic trouble codes and refer to the relevant diagnostic trouble code index. If no fault found then refer to the electrical circuit diagrams and check CAN bus for short circuit to ground, short circuit to power, open circuit, high resistance
U0402-83	Invalid Data Received from Transmission control module - value of signal protection calculation incorrect	Calculated checksum for transmission control module message data does not match received checksum	Check transmission control module for diagnostic trouble codes and refer to the relevant diagnostic trouble code index. If no fault found then refer to the electrical circuit diagrams and check CAN bus for short circuit to ground, short circuit to power, open circuit, high resistance
U0402-92	Invalid Data Received from Transmission control module - performance or incorrect operation	Message received from transmission control module indicates it is unable to support Jaguar drive optimization modes	Check transmission control module for diagnostic trouble codes and refer to the relevant diagnostic trouble code index
U0415-92	Invalid Data Received From Anti-Lock Brake System (ABS) Control Module - performance or incorrect operation	Message received from ABS module indicates it is unable to support Jaguar drive optimization modes	Check ABS module for diagnostic trouble codes and refer to the relevant diagnostic trouble code index
U0422-08	Invalid Data Received From Body Control Module - Bus Signal / Message Failures	Update bit for powermode signal not received from central junction box - possible CAN fault	Check central junction box for diagnostic trouble codes and refer to the relevant diagnostic trouble code index. Using the manufacturer approved diagnostic system, complete a CAN network integrity test
U0422-81	Invalid Data Received From Body Control Module - invalid serial data received	Invalid powermode complement data received from central junction box	Check central junction box for diagnostic trouble codes and refer to the relevant diagnostic trouble code index
U0422-92	Invalid Data Received From Body Control Module - performance or incorrect operation	Message received from power assisted steering module indicates that it is unable to support Jaguar drive optimization modes	Check instrument cluster and central junction box for diagnostic trouble codes and refer to the relevant diagnostic trouble code index. If no fault found, then refer to the electrical circuit diagrams and check CAN bus for short circuit to ground, short circuit to power, open circuit, high resistance
U043A-92	Invalid Data Received From Suspension Control Module ""B"" - performance or incorrect operation	Message received from continuously variable damping module indicates it is unable to support Jaguar drive optimization modes	Check continuously variable damping module for related diagnostic trouble codes and refer to the relevant diagnostic trouble code index
U101A-86	Lost Communication With Transmission Control Module (Multiple Bus) - signal invalid	CAN and LIN bus failed. Information only - no action necessary if no additional CAN or LIN diagnostic trouble codes present	Check for transmission control module CAN and/or LIN diagnostic trouble codes present in transmission shift module then refer to actions for these specific diagnostic trouble codes. If no additional transmission control module CAN and/or LIN diagnostic trouble codes present in transmission shift module, then no further action required
U1A14-04	CAN Initialization Failure - system internal failures	Signal configuration not present/incorrect	Check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
U2012-4A	Car Configuration Parameter(s) - incorrect component installed	Mismatch detected between vehicle configuration and installed gear selector variant. Check correct part fitted and, if fault still present, check vehicle configuration	Check correct transmission shift hardware variant is installed for the vehicle configuration - i.e. for supercharged variants, transmission shift modules with dynamic mode button should be installed only. All other vehicles should contain hardware without the dynamic mode button. If correct hardware installed then check/amend car configuration parameters using the manufacturer approved diagnostic system
U2100-00	Initial Configuration Not Complete - no sub type information	Transmission shift module not fully configured	Check and install new transmission shift module as required. Refer to the warranty policy and procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new module/component
U3003-16	Battery Voltage - circuit voltage below threshold	Low voltage detected at transmission shift module (battery voltage < 8.5 volts)	Ensure battery is in a fully charged and serviceable condition, refer to the battery care manual. Check engine control module for alternator related diagnostic trouble codes, check battery power feed circuit to transmission shift module, clear diagnostic trouble codes, cycle ignition
U3003-17	Battery Voltage - circuit voltage above threshold	High voltage detected at transmission shift module (battery voltage > 16.5 volts)	Check engine control module for alternator/over charging related diagnostic trouble codes, clear diagnostic trouble codes, cycle ignition
U3003-62	Battery Voltage - signal compare failure	Measured voltage different to CAN received voltage (voltage difference > 2 volts)	Compare vehicle voltage to voltage present at the transmission shift module, repair fault, clear diagnostic trouble codes, cycle ignition