DESCRIPTION AND OPERATION
RANGE ROVER 4.17
SUNROOF
DESCRIPTION
General
Operation of the sunroof is controlled via the three position switch located on the front of the
headlining. Moving the switch rearwards opens the sunroof. Similarly, moving the switch
forward closes the sunroof. A single press in the centre of the switch opens or closes the
sunroof from the tilt position.
All switch inputs are registered by the sunroof ECU, which is located behind the front of the
headlining, adjacent the sunroof motor. The sunroof ECU also receives messages from the
Body Control Unit (BCU) via the P-Bus to enable it to carry out its automatic closing and
opening routine. Automatic closing is carried out when the 'Land Rover' button on the remote
handset is pressed and held for longer than 2 seconds. Similarly, pressing and holding the
'Arrow' key on the remote handset for longer than 2 seconds opens both the sunroof and all
windows.
For more information on P-Bus messages, refer to the Communication Databuses
section of the System Description and Operation Workshop Manual.
For more information on Sunroof operation, refer to the Sunroof section of the System
Description and Operation Workshop Manual.
For more information on automatic opening and closing, refer to the Anti-theft Alarm and
Central Door Locking section of this manual.
+ ANTI-THEFT ALARM AND CENTRAL DOOR LOCKING (CDL).
OPERATION
Power Distribution
Feed from the positive battery terminal (C0192) is supplied to fuse 53, and fuse 58 of the
passenger compartment fuse box (C0632) on an R wire. Fuse 58 (C0582) provides a
constant battery feed to the sunroof ECU (C0784) on an RS wire. Fuse 53 (C0583) provides
a constant battery feed to the ignition switch (C0099 on Td6 vehicles, C0028 on V8 vehicles)
on an R wire. When the ignition switch is turned to the 'auxiliary' position, current flows
across the switch (C0099 on Td6 vehicles, C0028 on V8 vehicles) to fuse 41 of the
passenger compartment fuse box (C0585) on a PB wire. Fuse 41 (C0586) provides an
auxiliary ignition feed to the Body Control Unit (BCU) (C0660) on a PW wire.
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