Reading and Clearing Diagnostic Trouble Codes

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

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 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 below, it is possible to enter the diagnosis check mode.

3. INDICATOR CHECK




a. Within 5 seconds after turning the ignition switch on, press the A/C switch 3 times and turn the blower switch from OFF to AUTO.




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 system enters the DTC begins automatically.
- Operate the blower switch from AUTO to except AUTO position when desiring to cancel the check mode.




4. 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 DTC as indicated by the number of blinks of the A/C indicator.

HINT: The illustration shows the blinking pattern associated with the DTC 12 and 23. If 2 or more DTCs (abnormalities) are indicated, the lowest number (code) is output first.

c. Identify the problem using the chart of the DTC.

5. ACTUATOR CHECK




a. Actuator check mode is started at the same time with DTC check mode.
b. Check visually on by hand that the air flow, amount of damper operating and operation of the compressor changes according to the set temperature of the A/C control panel, as shown in the chart.






HINT: To cancel the check mode, turn blower switch from AUTO to except AUTO.