Land Rover Discovery: Electronic Feature Group
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SPECIAL TOOL(S)
REMOVAL
NOTE:
Removal steps in this procedure may contain installation details.
WARNING:
Make sure to support the vehicle with axle stands.
Raise and support the vehicle.
Refer to: F
COMPONENT LOCATION
Central Junction Box (CJB)
Instrument Cluster (IC)
Immobilizer Antenna Unit (IAU)
Smart key
Radio Frequency (RF) receiver
Battery Back-Up Sounder (BBUS)
Hood switch
Tailg
Description
The door modules provide the interface between the door latch motors, the
door and latch switches and the Central Junction Box (CJB). The door
modules provide door micro switch status info
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PRINCIPLES OF OPERATION
For a detailed description of the Ride and Handling Optimization, refer to
the relevant Description and Operation section in the workshop manual.
REFER to: Ride and Handling Optimization (204-06 Ride and Handling
Optimization, Description and Operation).
INSPECTION AND VERIF
When the driver moves the wipers and washers control switch to the rear
window wiper position, the CJB detects a LIN bus message and will
energize the rear window wiper relay which is integral with the RF Filter.
When energized, the rear wiper relay provides a power supply to the rear
window wiper