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 center 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 COMMUNICATION DATA BUSES .
For more information on Sunroof operation, refer to SUNROOF .
For more information on automatic opening and closing, refer to ANTI-THEFT ALARM & CENTRAL DOOR LOCKING (CDL) .
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.