LR3/Disco 3
Rear Height Sensor
A height sensor is fitted in each corner of the vehicle to monitor the ride height of the vehicle. The sensor bodies are
attached with screws to brackets on the chassis rails.
Each sensor comprises a sensor body which contains a single track rotary potentiometer, a lever arm and a drop link.
The sensor lever arm has a drop link which provides the connection between the sensor and the suspension control arm.
The drop link is a serviceable component and is a push fit to the lever arm and the suspension control arm.
The sensors are connected via their harness connector to the air suspension control module which receives the signal
output from each sensor and, using preprogrammed information, converts the signal to a height for each sensor position.
The front and rear sensors are handed and are coloured coded for identification as follows:
l
Right hand front and rear - black coloured lever
l
Left hand front and rear - white coloured lever.
Calibration
A calibration routine is performed using T4 to read the position of each corner of the vehicle and record the settings in the
ECU memory. Once set, the calibration is not required to be performed unless the air suspension control module is
removed or replaced, a height sensor is removed or replaced or a suspension arm to which the sensor is connected is
removed or replaced. If the removed height sensor is subsequently refitted, the calibration procedure will have to be
performed to ensure the integrity of the system.
If a replacement drop link is fitted, recalibration is not required providing the sensor body is not removed from its mounting
bracket.
Item Part Number
Description
1
-
Drop link
2
-
Electrical connector
3
-
Sensor body
4
-
Lever arm
