Land Rover Discovery: Diagnosis and Testing Information and Entertainment System
PRINCIPLE OF OPERATION
For a detailed description of the information and entertainment system,
refer to the relevant description and operation sections in the workshop
manual.
INSPECTION AND VERIFICATION
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.
NOTES:
- Verify the customer concern
- Visually inspect for obvious signs of damage and system integrity
Visual Inspection
![Visual Inspection](images/books/227/index314(1).jpg)
![Visual Inspection](images/books/227/index315(1).jpg)
- If an obvious cause for an observed or reported concern is found,
correct the cause (if possible) before proceeding to the next step
- 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
- 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
READ NEXT:
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:
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
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
SEE MORE:
Engine coolant outlet
Engine coolant inlet from cylinder block
Oil pressure outlet to cylinder block
Oil pressure inlet / Anti-drain valve
The engine oil cooler is located on the side of the cylinder block, below the
turbocharger and exhaust manifold. The oil cooler is sealed to the cylinder
Always make sure that objects
carried in the vehicle are secured
properly.
Never allow passengers to travel
in the loadspace under any
circumstances.
Make sure that when the seatback
is raised, the locking mechanism
is fully engaged.
When raising the rear seatbacks,
make sure the seat belts are
corr