Auto Test Diagnostics

1. Install battery charger to power vehicle during testing.
2. Open luggage compartment door to access the air suspension switch.
3. Connect Rotunda New Generation Star (NGS) to air suspension/steering test connector on the RH front shock absorber tower. Select air suspension auto test for Mark VIII from the NGS menu.
4. Make sure both doors are closed.
5. Turn air suspension service switch to OFF, then to ON.
6. Turn ignition switch from OFF to RUN.
7. Press NGS trigger button to begin Self-Test.
8. DTC 10 is displayed while Auto Test is running. Any faults discovered by Auto Test will halt the test and be displayed on the NGS.

CAUTION: Do not lean on vehicle or open doors while DTC 10 is displayed. This will introduce errors into the test results.

9. When DTC 12 is displayed:
- Open driver door.
- Turn steering wheel a minimum of 1/4 turn in both directions.
- Exit vehicle and close driver door.
- Open then close passenger door.
- Press NGS trigger to continue test.
10. Read displayed DTCs. DTC 11 means vehicle has passed Auto Test.
11. If vehicle passes Auto Test, exit diagnostics by removing NGS from data link connector and turning ignition switch OFF. Other DTCs retrieved indicate faults that must be serviced. Refer to the Air Suspension/EVO Control Module Diagnostic Trouble Code (DTC) Index for Pinpoint Test direction.
12. If unable to enter auto test, go to Pinpoint Test A.