Without Scan Tool

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 22) using diagnosis trouble code check then proceed to inspect the circuit or the component.

Compressor lock sensor circuit. (See DTC 22)




2. LIST OF OPERATION METHODS
By operating each of the A/C control switches as shown in the diagram, 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 the indicators light up and go off at 1 second intervals 4 times in succession.

HINT:
- After the indicator check is ended, the diagnostic trouble code check begins automatically.
- Press the OFF switch when desiring to cancel the check mode.




DTC CHECK (SENSOR CHECK)




a. Perform an indicator check. After the indicator check is completed, the system enters the DTC check mode automatically.

b. Read the DTC displayed on the panel. Refer to the list of DTCs when reading the DTCs. (DTCs are out put at the temperature display.)

If the slower display is desired, press the Temp. Control Switch and change it to step operation. Each time the Temp. Control switch is pressed, the display changes by 1 step.