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:
Installation
Make sure the correct vehicle suspension components are installed.
Refer to: Specifications (204-00 Suspension System - General
Information, Specifications).
Inspect the component and install a new one if damaged.
Inspect the component and install a new one if damaged.
Insp
PRINCIPLES OF OPERATION
For a detailed description of the Trailer Lamps, refer to the relevant
Description and Operation section in the workshop manual. REFER to:
Exterior Lighting (417-01 Exterior Lighting, Description and Operation).
INSPECTION AND VERIFICATION
CAUTION:
Diagnosis by substitution f