Failure Modes Trouble Shooting SLS

Failure modes
Failures are indicated by the SLS warning lamp in the bottom left corner of the instrument pack illuminating continuously in an amber colour. The following tables show the type of system failures and their effects on the system operation.





Height sensors





Door Switch Inputs





SLS off-road mode switch





Air supply unit air control valves





Air supply unit compressor

Operation





Circuit diagram
The SLS system is active when the ignition switch is in position II, when one or more doors are open and for up to thirty minutes after all doors have been closed. If the rear axle is articulated by more than 100 mm (3.93 inch), the ECU will not activate the SLS system.
The air supply unit compressor will only operate to raise the rear of the vehicle when the engine is running, with the exception of the remote handset operation which does not require the engine running. Three modes of SLS operation are available; Normal Ride Height, Off-Road Mode (ORM) and Extended Mode. A fourth mode, transportation mode, is programmed for transport or recovery of the vehicle on a trailer.