Function Test - Section 11
Preliminary testing
Read out DTC, actual/nominal values and perform activations using Hand-Held Tester (HHT).
NOTE: Prior to performing any repairs, read out DTC memory from the ADS control module using the HHT.
The HHT display indicates the defective components or refers directly to the appropriate test step in the corresponding Diagnostic Manual chapter.
1. Connect the HHT to data link connector (X11/4) as shown in Section 0.
2. Ignition: ON
3. Read DTC memory from ADS control module.
4. Read out nominal/actual value displays.
5. Perform component activations.
6. Perform repairs according to DTC memory readout.
7. After completing repairs erase DTC memory.
NOTE: Customers which have driveways with extreme approach/exit angles or travel frequently on bad road surfaces may have the vehicle's ADS control module (N51) reprogrammed (see HHT menu selection "Programming") for an increased stage 1 ride height (+15 mm) at vehicle speeds below 35 mph (58 km/h) with the switch pressed.
After reprogramming the ride height (as described above), mark the ADS control module with a red dot for identification purposes. The stage 2 increased ride height is not affected by this programming change. In any case, the increased ride height is cancelled when the vehicle speed exceeds 37 mph (62 km/h).
Figure 1:
