Height Control OFF Indicator Light Circuit: Description
WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
If the ECU detects a problem with the height control, the OFF indicator light will flash. At this time, the ECU records a DTC in memory and any further height control is prohibited. DTCs in memory can be checked by connecting terminals TC and CG of the DLC3.