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 B1422/22) using diagnosis trouble code check 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, it is possible to enter the diagnosis check mode.

3. INDICATOR CHECK




a. Turn the ignition switch on while pressing the A/C control AUTO switch and R/F SW 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.