Reset Procedure

A/C COOLDOWN TEST
The A/C Cooldown Test:
- is actuated with the DRBIII(R).
- tests A/C system performance based on evaporator temperature sensor input.
- will not run if ambient temperature is below 12.7° C (55° F).
- will pass if the evaporator temperature drops 11.1° C (20° F) within one minute of starting the test.
- indicates an outcome by displaying one or more test status messages on the DRBIII(R). These test status messages will clear after paging back out of this test function. Therefore, is it important to note all of the messages before doing so.

Running the A/C Cooldown Test will cause the A/C status indicator to flash. If the test fails, the A/C status indicator will continue to flash until either the test returns passed or the ignition key is cycled. When the A/C status indicator is flashing, it will not indicate A/C operating status. However, the A/C mode switch will continue to function normally. For vehicles equipped with electric backlight (EBL), when the A/C status indicator is flashing, the EBL status indicator will not function. However, the EBL mode switch will continue to function normally.

HVAC DOOR CALIBRATION
The HVAC Door Recalibration:
- is actuated with the DRBIII(R).
- homes and repositions door actuators
- monitors for door span faults.
- indicates an outcome by displaying one or more messages on the DRBIII(R).

For vehicles equipped with electric backlight (EBL), running the HVAC Door Recalibration will cause the EBL status indicator to flash. If recalibration fails, the EBL status indicator will continue to flash until either the system passes recalibration or the ignition key is cycled. When the EBL status indicator is flashing, it will not indicate EBL operating status. However, the EBL mode switch will continue to function normally. When the EBL status indicator is flashing, the A/C status indicator will not function. However, the A/C mode switch will continue to function normally.

For vehicles not equipped with electric backlight (EBL), no status indicator will flash when running the HVAC Door Recalibration. If recalibration fails, the A/C status indicator will not function, however, the A/C mode switch will continue to function normally.