Check Mode Procedure

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

Fig 1: A/C Control Switches Operation Chart

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1. Turn the ignition switch OFF.
2. Turn the ignition switch to the ON position while pressing the A/C control "AUTO" switch and "R/F" switch simultaneously. Hold both switches until the indicator check screen appears.
   Fig 2: Pressing A/C Control "AUTO" Switch And "R/F" Switch

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3. The indicator check is automatically performed when panel diagnosis is activated. Check that the indicators light up and go off at 1 second intervals 4 times in succession.

   HINT:

   • If a navigation system is installed, the indicator will blink and buzzer will sound.
   • The sensor check automatically starts when the indicator check is completed.
   • Press the "OFF" switch to cancel the check mode.

1. Start the engine and warm it up.
2. Perform the indicator check.

   HINT:

   After the indicator check is completed, the system enters the DTC check mode automatically.

   Fig 3: Indicator Blinking Pattern

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3. 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.)
   NOTE:

   • In the sensor check mode, which is automatically transferred from the indicator check mode, troubleshooting may be partially performed. Be sure to perform the actuator check, and then the sensor check again.
   • If the check is performed in a dark place, DTC 21 or 24 may be displayed even though the system is normal.

   HINT:

   • When there are no problems, DTC 00 is output.
   • Refer to the DTC chart (Diagnostic Trouble Code chart) for details of the codes (See DIAGNOSTIC TROUBLE CODE CHART  ).

1. Start the engine and warm it up.
2. Perform the indicator check.
   Fig 4: Identifying Trouble Codes Output On Temperature Display

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3. Push the "R/F" switch to perform the actuator check.

   HINT:

   Be sure to perform the actuator check after starting the engine.

   Fig 5: Pushing "R/F" Switch To Perform Actuator

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4. As the actuator check is repeated from steps 1 to 10 at 1 second intervals, check the temperature and air flow visually and by hand.

   HINT:

   • The display blinks at 1 second intervals in the step operation.
   • Push the "OFF" switch to finish panel diagnosis.
   • Push the "AUTO" switch to enter the sensor check mode.
     Fig 6: Pushing "OFF" Switch To Finish Panel Diagnosis

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   A/C COMPRESSOR REVOLUTION SPEED REFERENCE CHART
   
   

   Step No.	Display code	Conditions
   		Blower level	Air flow vent	Air inlet damper	Air mix damper	A/C compressor revolution speed (RPM)
   1	0	0	FACE (0%)	FRESH (109%)	"COOL" side (-5%)	0
   2	1	1	FACE (0%)	FRESH (109%)	"COOL" side (-5%)	0
   3	2	17	FACE (0%)	R/F (50%)	"COOL" side (-5%)	8,600
   4	3	17	FACE (0%)	RECIRCULATION (-9%)	"COOL" side (-5%)	8,600
   5	4	17	B/L (33.5%)	FRESH (109%)	"COOL"/"HOT" (50.0% opened)	8,600
   6	5	17	FOOT (AUTO) (53.5%)	FRESH (109%)	"COOL"/"HOT" (50.0% opened)	5,000
   7	6	17	FOOT (MANUAL) (53.5%)	FRESH (109%)	"COOL"/"HOT" (50.0% opened)	5,000
   8	7	17	FOOT (MANUAL) (53.5%)	FRESH (109%)	"HOT" side (105%)	5,000
   9	8	17	F/D (73.5%)	FRESH (109%)	"HOT" side (105%)	5,000
   10	9	31	DEF (100%)	FRESH (109%)	"HOT" side (105%)	5,000

5. If the steps are difficult to read because they change automatically, push the "UPDr" switch to display the steps one at a time so that they can be read easily. The items are displayed step by step each time the "UPDr" switch is pushed.

   HINT:

   • Push the "OFF" switch to finish panel diagnosis.
   • Push the "AUTO" switch to enter the sensor check mode.