DESCRIPTION AND OPERATION
RANGE ROVER 4.25
FRONT SEATS
DESCRIPTION
General
Two levels of electric front seats are fitted to Range Rover, with a memory function available
as an option. The memory function is capable of storing up to three seat positions. The
standard electric front seats have four motors to control the following:
l Horizontal movement
l Seat height
l Seat angle
l Seat backrest recline.
The higher specification 'Contour' seat has two additional motors which control the following:
l Headrest movement
l Additional upper backrest adjustment.
For a detailed description of front seat operation, refer to the Body – Seats section of the
System Description and Operation Workshop manual.
OPERATION
Power Distribution
Feed from the positive battery terminal (C0192) is provided to the seat relay and fuse 53.
Both are located in the passenger compartment fuse box (C0632). 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 'ignition' position, current flows across the switch
(C0099 on Td6 vehicles, C0028 on V8 vehicles) to the seat relay coil (C0585) on a G wire.
Current flows through the seat relay coil (C0583) to earth on an N wire. This energises the
seat relay. The energised seat relay provides a feed to fuse 20 and fuse 21, which are also
located in the passenger compartment fuse box.
Non-Memory Drivers Seat
Fuse 20 (C0584) provides a feed to the LH seat switch pack (C0773) on an RN wire. Fuse
21 (C0584) provides a feed to the RH seat switch pack (C0774) on an RN wire. Both the LH
(C0773) and the RH (C0774) seat switch packs are earthed on N wires.
Memory Drivers Seat
Fuse 20 (C0584) provides a feed to the seat memory ECU (C0722) on an RN wire, and the
upper backrest motor (C2308) on an RN then R wire. The seat memory ECU (C0722) is
earthed on an N and an NB wire. The upper backrest motor (C2308) is earthed on an N wire.
NOTE: The upper backrest motor is only fitted on the 'Comfort' seat.
To Next Page
Loading...
