Download Range Rover Electrical Library - LM - 2nd Edition

DESCRIPTION AND OPERATION
Air Suspension ECU
The air suspension ECU (C0867) is located behind the LH side of the fascia, and is
connected to the centre console rotary switch (C0700) as follows:
l If the rotary switch is turned to select a lower suspension setting, an earth path is
created via the switch on a UP wire
l If the rotary switch is turned to select a higher suspension setting, an earth path is
created via the switch on an SR wire
l If the 'Hold' switch has been selected, an earth path is created via the switch on a YW
wire.
NOTE: The air suspension ECU will only allow the suspension settings to change if all the
conditions described in the 'Suspension' section of the System Description and Operation
Workshop manual have been met.
The air suspension ECU (C0867) also provides a feed to the LED's contained on the face of
the centre console rotary switch (C0700) as follows:
l
l
l
l
l
To the 'Motorway' LED on an SY wire
To the 'Off Road' LED on an SG wire
To the 'Access' LED on an SP wire
To the 'Standard' LED on a WY wire
To the 'Hold' LED on an SU wire.
Height Sensors
The Air Suspension ECU monitors the height of the vehicle via four height sensors. The air
suspension ECU is connected to the height sensors as follows:
RH Front Height Sensor
The air suspension ECU (C0867) provides a feed to the RH front height sensor (C1697) on
a BW wire. An earth path is provided for the sensor on a BN wire. By measuring the voltage
returned on a BS wire, the air suspension ECU can determine the height of the RH front of
the vehicle.
LH Front Height Sensor
The air suspension ECU (C0867) provides a feed to the LH front height sensor (C1696) on
an SB wire. An earth path is provided for the sensor on an SN wire. By measuring the voltage
returned on an SW wire, the air suspension ECU can determine the height of the LH front of
the vehicle.
4.118
RANGE ROVER