Range Rover L322 - Page 52

DESCRIPTION AND OPERATION
RANGE ROVER 4.27
Memory Drivers Seat
When the memory function is selected, the seat memory ECU (C0722) transmits the
relevant data along the K-bus to the Body Control Unit (BCU) (C0660) on a WRY wire. The
BCU then moves both the steering column and the door mirrors to the required position. For
more information on door mirror operation, refer to the Door Mirrors section of this manual.
+ DOOR MIRRORS.
For more information on steering column operation, refer to the Steering Column section
of this manual.
+ STEERING COLUMN.
Horizontal Movement
When the memory function is selected, the seat memory ECU (C0772) provides feeds to the
forward/backward seat motor (C0720) on a pair of R wires. The seat memory ECU (C0772)
monitors the position of the seat by measuring the voltage pulses returned from the hall
effect sensor (C0720) on an R wire.
Vertical Movement
When the memory function is selected, the seat memory ECU (C0772) provides feeds to the
front (C1637) and rear (C1636) up/down motors on R wires. The seat memory ECU (C0772)
monitors the position of the seat by measuring the voltage pulses returned from the hall
effect sensors (C1637 & C1636) on R wires.
Recline
When the memory function is selected, the seat memory ECU (C0772) provides feeds to the
backrest recline seat motor (C0518) on a pair of R wires. The seat memory ECU (C0772)
monitors the position of the seat by measuring the voltage pulses returned from the hall
effect sensor (C0518) on an R wire.
Headrest
When the memory function is selected, the seat memory ECU (C0772) provides feeds to the
headrest seat motor (C1419) on a pair of R wires. The seat memory ECU (C0772) monitors
the position of the headrest by measuring the voltage pulses returned from the hall effect
sensor (C1419) on an R wire.