Land Rover Discovery Owners & Service Manuals

Land Rover Discovery: Information and Message Center / Diagnosis and Testing


For a detailed description of the Information and Message Center, refer to the relevant Description and Operation section in the workshop manual.

REFER to: Information and Message Center (413-08 Information and Message Center, Description and Operation).



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.


  • If a control module or a component is suspect and the vehicle remains under manufacturer warranty, 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.
  • When performing voltage or resistance tests, always use a digital multimeter that has the resolution ability to view 3 decimal places.

    For example, on the 2 volts range can measure 1mV or 2 K Ohm range can measure 1 Ohm. When testing resistance always take the resistance of the digital multimeter leads into account.

  • Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
  1. Verify the customer concern
  2. Visually inspect for obvious signs of damage and system integrity

Visual Inspection

Visual Inspection

  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step
  2. If the cause is not visually evident, verify the symptom and refer to the Symptom Chart, alternatively check for Diagnostic Trouble Codes (DTCs) and refer to the DTC Index
  3. Check DDW for open campaigns. Refer to the corresponding bulletins and SSMs which may be valid for the specific customer complaint and carry out the recommendations as required


For a list of Diagnostic Trouble Codes (DTCs) that could be logged on this vehicle, please refer to Section 100-00. REFER to: Diagnostic Trouble Code Index - DTC: Instrument Cluster (IC) (100-00 General Information, Description and Operation).

Information and message center specifications

Message Center Type:

Message Center Type

Torque Specifications:

Torque Specifications


     Instrument Cluster

     Instrument Cluster Lens (G1791763) / Removal and Installation

    REMOVAL CAUTION: Use a suitable trim tool. NOTE: Some variation in the illustrations may occur, but the essential information is always correct. Disconnect the battery ground cable. Refer to: Specifi

     Instrument Cluster (G1791762) Removal and Installation

    REMOVAL CAUTION: Use a suitable trim tool NOTES: When a new instrument cluster is to be installed, the Land Rover approved diagnostic system must be connected to the vehicle and the instrument clu


     Transmission Fluid Level Check (G1660817) / General Procedures

    GENERAL EQUIPMENT CHECK WARNINGS: Be prepared to collect escaping fluids. Observe due care when draining, as the fluid can be very hot. CAUTION: Vehicle must be horizontal during this operation. NOTE: Some variation in the illustrations may occur, but the essential information is always correc

     Power Transfer Unit (PTU)

    Breather and tube Drive flange Hydraulic pressure line from AWD valve block (P4) Hydraulic pressure line from AWD valve block (P3) Input shaft Left cover Casing Engine mounting bracket Right cover Crown wheel shaft Level plug Drain plug Hydraulic connection (P3) Hydraulic connection

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