Function Test

NOTE: This procedure required the use of a New Generation Star (NGS) or equivalent scan tool.

1. Install battery charger to power vehicle during testing.
2. Open luggage compartment door. Locate air suspension service switch and make certain switch is OFF.
3. Connect new generation star to air suspension steering test connector on RH front shock absorber tower. Select functional test from the scan tool menu.
4. Make sure both doors are closed.
5. Turn ignition switch to RUN.
6. Perform Function Test 211 and record DTCs displayed.
7. Perform Function Test 228 to clear control module memory.
8. Scroll to select desired functional test. Refer to Function Test Index.
9. Press NGS trigger button to begin desired test.

NOTE: Compressor may shut off if it runs for more than 2 minutes. If compressor shuts OFF, exit test and turn ignition off for at least 10 minutes.

10. Press NGS trigger button to end test.
11. Scroll to next desired function test.

NOTE: Prior to testing for any of the following DTCs, service DTC 18 for low battery voltage or DTC 19 for high battery voltage to determine power and ground. If no fault is found, do not replace any parts, but continue with listed DTCs.