General
The main function of the four wheel air suspension system is to maintain the vehicle at the correct ride height, irrespective of load. Additionally, the system allows the driver to request ride height changes to improve off-road performance or ease of access or for loading. The system automatically adjusts the ride height to improve the vehicle handling and dynamics when speed increases or decreases.
The air suspension system fitted to Range Rover is controlled by an ECU located behind the passenger side of the fascia. The ECU monitors the height of each corner of the vehicle via four height sensors, which are mounted in-board of each road wheel. The ECU also performs an 'on-board diagnostic' function to perform 'health checks' on the system. If faults are detected, codes are stored in the ECU and can be retrieved using TestBook or T4.
For a detailed description of the air suspension system, refer to ELECTRONIC SUSPENSION .
Power Distribution
Feed from the positive battery terminal (C0192) is supplied to fusible link 5 and fuse 57 of the passenger compartment fuse box (C0632) on an R wire. Fuse 57 (C0582) provides a constant battery feed to the air suspension ECU (C2030) on an RN wire. The air suspension ECU (C2030) is earthed on an N wire.
Fusible link 5 (C0588) is connected to fuse 18 of the rear fuse box (C2024) by an R wire. Fuse 18 provides a constant battery feed to the air suspension relay, which is also located in the rear fuse box.
See also:
• ELECTRONIC SUSPENSION