Pre-Check

PRE-CHECK

1. WARNING FOR A/C COMPRESSOR LOCK




If compressor lock occurs during A/C operation, the A/C switch indicator on the A/C control assembly starts blinking. When this occurs, check for compressor lock (DTC 1422/22) using diagnosis trouble code check, and then proceed to inspect the circuit or the component.
Compressor lock sensor circuit.

2. LIST OF OPERATION METHODS




By operating each of the A/C control switches as shown in the diagram below, it is possible to enter the diagnosis check mode.

3. INDICATOR CHECK







a. Turn the ignition switch to ON while pressing the A/C control AUTO switch and R/F switch simultaneously.




b. Check that all indicators light up and go off at 1 second intervals of 4 times in succession.
c. Check that the buzzer sounds when the indicators light up.

HINT:
- After the indicator check ends, the diagnostic trouble code check begins automatically.
- Press the OFF switch when cancelling the check mode.

4. STEP MOTORS INITIALIZING FUNCTION
Step motor initializing procedure (Automatic initializing).







1. The battery is connected and ignition switch is turned to ON for the first time, the initializing function of the step motors is activated. In this case, the "FRONT DEF" indicator blinks.







2. If mode indication is different from the actual air outlet in actuator check, turn the ignition switch to ON or START while pressing "Rr DEF" and "OFF" switches simultaneously. Step motor initialization occurs and the "DEF" indicator blinks.

5. RESTRICTION OF STEP MOTORS CONTINUES OPERATION







If the step motor is continuously operating for many hours, the step motor is forced to stop and the "AUTO" indicator blinks. In this case, the step motor automatically restores after cooling for approx 7 minutes.