Without Scan Tool

Indicator Check




a. Turn the ignition switch on while pressing the air conditioning control AUTO switch and R/F switch simultaneously.




b. Check that all the indicators light up and go oft at 1 second intervals 4 times in succession.

HINT:
- After the indicator check is ended, the system enters the DTC begins automatically.
- Press the OFF switch when desiring to cancel the check mode.

NOTE: This is the only information provided by the manufacturer for reading trouble codes for this system.

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 DTCs when reading the DTCs. (DTCs are output at the driver side temperature display.)




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