Land Rover Discovery Owners & Service Manuals

Land Rover Discovery: Diagnosis and Testing Information and Entertainment System

Land Rover Discovery (2009–2016) Service Manual / Electrical / Information and Entertainment System / Diagnosis and Testing Information and Entertainment System


For a detailed description of the information and entertainment system, refer to the relevant description and operation sections in the workshop manual.



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 the 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 accurate to three decimal places, and with an up-todate calibration certificate. When testing resistance always take the resistance of the digital multimeter leads into account.
  • All diagnostic equipment should comply with local legislation.

    Relevant diagnostic equipment should be regularly checked and calibrated according to the manufacturer's instructions.

  • The workshop should be equipped with a full range of general equipment which is to be kept in good order and available to all suitably trained staff.
  • Diagnostic equipment must meet the JLR Minimum Standards for general equipment as outlined in TOPIx.
  • 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

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


 Diagnosis and Testing Information and Entertainment System/ Symptom chart

SYMPTOM: Audio/video system inoperative at start up POSSIBLE CAUSES: Last used audio/video source inoperative MOST network fault ACTION GO to Pinpoint Test A. SYMPTOM:

 USB / CD Data Disk Audio File Compatibility

NOTE: Before attempting a repair to the in-vehicle infotainment system following concerns regarding no playback of audio files stored either on a USB data storage device or on a CD data disc, check b

 Portable Audio Interface Panel/ USB Power Supply

If DTC B1252-19 (USB Port General Electrical Failures - Circuit current above threshold) has been logged, the IAM has detected a current draw from the Portable Audio Interface Panel in excess of 1.7


 First Aid

Apart from meeting any legal requirements it is desirable for someone in the workshop to be trained in First Aid procedures. Splashes in the eye should be flushed carefully with clean water for at least ten minutes. Soiled skin should be washed with soap and water. In case of cold burns, from alt

 Rear Quarter Window Glass (G1805069) / Removal and Installation

REMOVAL Refer to: C-Pillar Upper Trim Panel (501-05, Removal and Installation). CAUTIONS: Protect the surrounding components. Protect the surrounding paintwork to avoid damage. Pull glazing wire through windshield sealant to the inside of the vehicle. INSTALLATION CAUTION: Make sure th

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