Without Scan Tool
1. INDICATOR CHECKa. Turn the ignition switch to 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.
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. (Codes are output at the temperature display.)
c. If the slower display is desired, press the front FRS switch and change it to stepped operation. Each time the front FRS switch is pressed, the display changes by 1 step.