Without Scan Tool

PRE-CHECK

1. LIST OF OPERATION METHODS




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

2. INDICATOR CHECK




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




b. Check that the indicators light up and go off at second intervals 4 times in succession.

HINT:
- After the indicator check is completed, the system enters the DTC 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 code displayed on the panel. Refer to the list of codes when reading the codes. (Trouble code are output at the temperature display.)




c. If the slower display is desired, press the FRONT DEF switch and change it to stepped operation. Each time the FRONT DEF switch is pressed, the display changes by 1 step.