Range Rover P38 Rear Suspension Electronic Air Suspension Fault Diagnosis - Page 958
ELECTRONIC AIR SUSPENSION
3
FAULT DIAGNOSIS
5. Symptom - Air System Faulty Or Inoperative.
POSSIBLE CAUSE
REMEDY
1. Blown air suspension system
fuse.
1. Check and renew fuse F44.
2. Blown fuse covering dashboard
’height control’ or ’inhibit’
switch.
2. Check and renew fuse F17.
3. Faulty ’height control’ switch;
could result in vehicle height
remaining at last setting until
ignition switched off.
3. Refer to TestBook to confirm fault and renew ’height control’
switch.
See ELECTRICAL, Repair.
4. Faulty ’inhibit’ switch; could
result in vehicle height not
operating automatically
between standard and low.
4. Refer to TestBook to confirm fault and renew ’inhibit’ switch.
See
ELECTRICAL, Repair.
5. Compressor inoperative; no air
pressure due to loose or
disconnected multi-plug.
5. Check and reconnect compressor multi-plug.
6. Blown compressor maxi fuse.
6. Check and renew maxi fuse 2.
7. Faulty compressor relay,
resulting in compressor running
continuously.
7. Renew relay RL20.
8. Loss of air pressure in the air
system.
8. Check air system components for faults and air harness for leaks
etc.
See FRONT SUSPENSION, Repair.
9. Height sensor linkage
damaged or linkage mount on
composite radius arm
damaged.
9. Renew height sensor.
Refer to Height sensor.
See Repair. or
Refer to Trailing arm.
See Repair.
10. Faulty delay relay. If the delay
relay fails with a closed circuit
the system will be powered,
resulting in a flat battery.
10. Renew relay AMR3284.