Navigation Control Module (NAV) fault code (Freelander 2)

Navigation system control unit

NOTE: If a module or component failure is suspected and the vehicle remains under manufacturer's warranty, refer to the Warranty Guide (Section B1.2) or determine if there is a previously approved special program in effect before replacing the component.

NOTE: Generic scan tools may not be able to read the codes listed or may only be able to read 5-digit codes. Match the 5 digits from the scan tool with the first 5 digits of the listed 7-digit code to identify the fault (the last 2 digits provide additional information readable by the manufacturer-approved diagnostic system).

NOTE: When performing voltage or resistance tests, always use a digital multimeter (DMM) with three decimal places of accuracy and a valid calibration certificate. When testing resistance, be sure to include the resistance of the DMM leads.

NOTE: Before starting diagnostic programs using fault location tests, check and correct basic faults.

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

NOTE: If DTCs are set and the fault is not present after performing the troubleshooting tests, an intermittent problem may be the cause. Be sure to check for loose connections and corroded terminals.

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Description and operation

For a detailed description of the navigation system, see the relevant section "Description and operation" in the workshop manual. For additional information, refer to the chapter: Navigation system (415-01 Infotainment system, Description and operation).

DTC	Description	Possible reason	Action
B1A89-11	Satellite dish	GPS Antenna Circuit Short to Ground	Using the electrical diagrams, check the GPS antenna circuit for a short to ground
B1A89-13	Satellite dish	GPS Antenna Electrical Circuit: Open	Using the electrical diagrams, check the GPS antenna circuit for an open circuit
B1A89-1B	GPS module	GPS receiver failure	Install the new multimedia unit. For more information, refer to the chapter: DVD navigation system (415-01 Infotainment system, Removal and installation).
B1D55-14	Electrical circuit of antenna #2	Traffic Message System (TMC)/Vehicle Information and Communications System (VICS) Antenna Circuit: Open Circuit	NOTE: Ignore this DTC on vehicles with block part number suffixes E*, D* or C* If a fault is detected in the traffic message channel system, refer to the electrical circuit diagrams and check the traffic message channel antenna/vehicle communication and information system circuit for an open circuit
B1D56-14	Electrical circuit of antenna #3	VICS Beacon Antenna Electrical Circuit: Open	Using the electrical diagrams, check the VICS beacon antenna circuit for an open circuit
U2005-31	Control unit	No vehicle speed message	Check the infotainment module for MOST network DTCs and refer to the appropriate DTC index. Perform MOST network tests using the manufacturer approved diagnostic system
U3000-49	Control unit	Internal malfunction	Install the new multimedia unit. For more information, refer to the chapter: DVD navigation system (415-01 Infotainment system, Removal and installation).
U3000-55	Control unit	Invalid vehicle configuration file data received	Check/update the vehicle configuration file using a manufacturer approved diagnostic system
U3000-87	Control unit	Missing message	Check the central junction box for DTCs and refer to the DTC index. For additional information, refer to the chapter: Communication Network (418-00 Module Communication Network, Diagnosis and Testing). Check the infotainment module for DTCs for the vehicle configuration file and the MOST network and refer to the appropriate DTC index. Perform MOST/CAN network tests using the manufacturer approved diagnostic system
U3000-98	Control unit	Increased temperature of the element or system	Check for additional DTCs and refer to the appropriate DTC index. Check/monitor the system for re-occurrence of the codes