Reading and Clearing Diagnostic Trouble Codes

AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System):

DTC CHECK / CLEAR

1. INDICATOR CHECK





(a) Turn the ignition switch to the ON position while pressing the A/C control AUTO switch and R/F (Recirculation/Fresh) switch simultaneously.





(b) Check that the indicators come on and go off 4 times in succession at 1 second intervals.

- After the indicator check is completed, the system enters the DTC mode automatically.
- Press the "OFF" switch to cancel the check mode.

2. DTC CHECK (SENSOR CHECK)
(a) After the indicator check is completed, the system enters the DTC check mode automatically.





(b) Read the codes displayed on the panel. Refer to the list of codes when reading the codes. (Trouble codes are output on the temperature display.)

HINT: Refer to the DTC chart (Diagnostic Trouble Code Chart) for details of the codes. (Air Conditioning System)





(c) If a slower display is desired, press the front DEF switch and change the display in the step operation. Each time the temperature up switch is pressed, the display changes by 1 step.

3. CLEARING DTC
(a) There are two methods for clearing the diagnostic trouble codes.
(1) Method "1"
During sensor check, press the "DEF" switch and "Rr. DEF" switch at the same time.





(2) Method "2"
Pull out the ECU-B fuse in the driver side J/B for 20 seconds or longer to clear the DTC memory.