DESCRIPTION AND OPERATION
4.8 RANGE ROVER
Rear Passenger Doors
When the BCU (C0662) receives an unlock signal from the RF receiver, it provides a feed
to the RH and LH rear (C0442) door lock motors on a pair of U wires. Current flows across
the motors (C0442) to earth path via the BCU (C0662) on a pair of B wires.
When the BCU (C0662) receives a lock signal from the RF receiver, it provides a feed to the
RH and LH rear door lock motors (C0442) on a pair of B wires. Current flows across the
motors (C0442) to earth via the BCU (C0662) on a pair of U wires.
When the BCU (C0662) receives a superlock signal from the RF receiver, it provides a feed
to the RH and LH rear (C0442) superlock motors on a pair of W wires. Current flows across
the superlock motors (C0442) to earth via the BCU (C0662) on a pair of U wires.
Tail Door
The non-latching tail door switch is located on the centre console, adjacent to the clock.
When the switch is pressed a momentary earth path is created. Sensing this, the BCU
(C0662) provides a feed to the upper tail door motor (C0383) on a YN wire. The motor
(C0383) is earthed on an N wire.
Once the upper tail door has been opened, the lower tail door can be opened. This can be
carried out by pressing the non-latching switch located on the upper edge of the lower tail
door.
The BCU (C0660) monitors the condition of the switch (C0615) by providing a feed on a YB
wire. When pressed, the switch contacts close and a momentary earth path is created via
the rear fuse box. Sensing this, the BCU (C0661) provides a feed to relay 8 of the rear fuse
box (C2022) on an NY wire. This feed energises relay 8.
The energised relay 8 (C2022) allows a feed from fuse 16 of the rear fuse box to power the
RH lower (C2052) and LH lower (C0617) tail door motors on UW wires. Both motors are
earthed on N wires.
Fuel Filler Flap
When the BCU (C0662) receives an unlock signal from the RF receiver, it provides a feed
to the fuel filler flap release motor (C0690) on a U wire. On European vehicles, current flows
across the motor (C0690) and is provided an earth path via the BCU (C0662) on a W wire.
On NAS vehicles, current flows across the motor (C0690) and is provided an earth path via
the BCU (C0662) on a B wire.
When the BCU (C0662) receives a lock signal from the RF receiver, it provides a feed to the
fuel filler flap release motor (C0690) on a W wire (B wire on NAS vehicles). Current flows
across the motor (C0690) and is provided an earth path via the BCU (C0662) on a U wire.
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