Front Controls Interface Module B (FCIMB)

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 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: 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 Front Controls Interface Module, for additional Diagnosis and Testing information refer to the relevant Diagnosis and Testing Section. Refer to Information and Entertainment System .

DTC	Description	Possible Causes	Action
U0010-88	Medium Speed CAN Communication Bus - bus off	CAN network circuit short to ground, short to power, open circuit	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 Central Junction Box - No sub type information	CAN network failure between Front Controls Interface Module B and Central Junction Box	Refer to the electrical circuit diagrams and check the power and ground connections to the Central Junction Box. 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 Front Control Interface Module and the Central Junction Box
U0256-00	Lost Communication With Front Controls Interface Module "A" - No sub type information	CAN network failure between Front Controls Interface Module and Front Controls Interface Module B	Refer to the electrical circuit diagrams and check the power and ground connections to the Front Controls Interface 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 Front Controls Interface Module and the Front Controls Interface Module B
U0300-00	Internal Control Module Software Incompatibility - No sub type information	Signal Configuration File incorrect or corrupt Front Controls Interface Module B installed to wrong vehicle	Clear DTC and retest. If DTC remains, install a new Front Controls Interface Module B as required. Refer to the warranty policy and procedures manual if a module is suspect
U2002-24	Switch - Signal stuck high	Switch(s) stuck or continually pressed by customer Front Controls Interface Module B failure	Ensure no buttons are inadvertently being pressed. Clear DTC and re-check, if DTC is still present suspect Front Controls Interface Module B. Check and install a new Front Controls Interface Module B as required. Refer to the warranty policy and procedures manual if a module is suspect
U3000-41	Control Module - general checksum failure	Front Control Interface Module not programmed Front Controls Interface Module B failure	Clear DTC and re-test, If DTC remains suspect the Front Controls Interface Module B. Check and install a new Front Controls Interface Module B as required. Refer to the warranty policy and procedures manual if a module is suspect
U3003-62	Battery Voltage - Signal compare failure	Charging system fault Vehicle battery fault Front Controls Interface Module B failure	Refer to repair manual and battery care manual, check vehicle battery and charging system. Perform any repairs required. Check and install a new Front Controls Interface Module B as required. Refer to the warranty policy and procedures manual if a module is suspect
B1A85-11	Ambient Light Sensor - Circuit short to ground	Ambient light sensor circuit short to ground Ambient light sensor failure	NOTE: The ambient light sensor and circuits are integral to the Front Controls Interface Module B Clear DTC and re-test. If DTC remains, check Ambient Light Sensor Voltage (0x721C) Datalogger signal using manufacturer approved diagnostic system. Check the voltage decreases when the sensor is covered and increases when a light source is directed into the sensor. If the sensor voltage does not change with varying light intensity suspect the Front Controls Interface Module B. Refer to the warranty policy and procedures manual prior to installing a new module
B1A85-12	Ambient Light Sensor - Circuit short to battery	Ambient light sensor circuit short to power Ambient light sensor failure	NOTE: The ambient light sensor and circuits are integral to the Front Controls Interface Module B Clear DTC and re-test. If DTC remains, check Ambient Light Sensor Voltage (0x721C) Datalogger signal using manufacturer approved diagnostic system. Check the voltage decreases when the sensor is covered and increases when a light source is directed into the sensor. If the sensor voltage does not change with varying light intensity suspect the Front Controls Interface Module B. Refer to the warranty policy and procedures manual prior to installing a new module