Reset Procedure

The A/C Cool-down Test:
- is actuated with the DRB III.
- checks A/C system performance based on evaporator temperature sensor input.
- will fail if evaporator temperature is below 18.3 °C (65 °F) when initiating the test.
- will pass if the evaporator temperature drops 6.7 °C (20 °F).
- faults display on the DRB III as test messages only after running the test.
- faults will not display on the DRB III as Diagnostic Trouble Codes.
- will cause the A/C mode switch status indicator to flash while the test is running.

If the test fails, the status indicator will continue to flash until either the test returns passed or the ignition key is cycled. It will also prevent the EBL mode switch status indicator (if equipped) from indicating EBL operating status. However the EBL mode switch will continue to function in this state.

The HVAC Door Recalibration function:
- is actuated with the DRB III.
After completing HVAC Door Recalibration, the DRB III will display the current total span of each door actuator. It is important to note this information before proceeding with diagnosing door calibration fault messages.

- homes and repositions door actuators.
- monitors for door span faults.
- faults display on the DRB III as test messages only after running the test.
- faults will not display on the DRB III as Diagnostic Trouble Codes.
- Will cause the EBL mode switch status indicator (if equipped) to flash while the test is running.
- If the test fails, the status indicator will continue to flash until either the test returns passed or the ignition key is cycled. It will also prevent the A/C mode switch status indicator (if equipped) from indicating A/C operating status. However, the A/C mode switch will continue to function in this state.