AIR CONDITIONING SYSTEM DIAGNOSIS SYSTEM

DESCRIPTION

1. Air conditioning system data and Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the intelligent tester to check for malfunctions and perform troubleshooting.

CHECK DLC3

1. Check the DLC3 (Click here).

LIST OF OPERATION METHODS

1. 

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

INDICATOR CHECK

1. Turn the power switch off.

2. Turn the power switch on (ACC) and wait at least 5 seconds.

3. 

   Turn the power switch on (IG) while pressing the A/C control panel "Passenger TEMP up" switch and "Recirculation/Fresh" switch simultaneously. Hold both switches until the indicator check screen appears.

   Table 1. Text in Illustration

   *1	Multi-media Module Receiver Assembly (w/ Navigation System) or Radio Receiver Assembly (w/ Audio and Visual System (w/ Multi-display)) (for LHD)	*2	Radio Receiver Assembly (w/ Audio and Visual System (w/o Multi-display)) (for LHD)
   *3	Multi-media Module Receiver Assembly (w/ Navigation System) (for RHD)	*4	Radio Receiver Assembly (w/ Audio and Visual System (w/o Multi-display)) (for RHD)

4. 

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

   Tip:
   

   • The sensor check automatically starts when the indicator check is completed.

   • Press the "OFF" switch to cancel check mode.

   Table 2. Text in Illustration

   *1	Multi-display Assembly (w/ Navigation System)	*2	Multi-display Assembly (w/ Audio and Visual System (w/ Multi-display))
   *3	Accessory Meter Assembly (w/o Multi-display)	*4	Multi-media Module Receiver Assembly (w/ Navigation System) or Radio Receiver Assembly (w/ Audio and Visual System (w/ Multi-display)) (for LHD)
   *5	Radio Receiver Assembly (w/ Audio and Visual System (w/o Multi-display)) (for LHD)	*6	Multi-media Module Receiver Assembly (w/ Navigation System) (for RHD)
   *7	Radio Receiver Assembly (w/ Audio and Visual System (w/o Multi-display)) (for RHD)	-	-

SENSOR CHECK (DTC CHECK)

1. Start the hybrid system and warm it up.

2. Perform the indicator check.

   Tip:

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

3. 

   Read the DTC displayed on the multi-display assembly*1 or the accessory meter assembly*2.

   Note:

   In sensor check mode, which is automatically entered after indicator check mode, troubleshooting may be partially performed. Be sure to perform the sensor check again.

   Tip:

   Refer to Diagnostic Trouble Code Chart for details of the codes (Click here).

   
   

   • When there are no problems, DTC 00 is output.

   • As an example, the illustration shows that display DTC 12 is output.

   
   

   • *1: w/ Multi-display

   • *2: w/o Multi-display

   Table 3. Text in Illustration

   *1	Multi-display Assembly (w/ Navigation System) (for LHD)	*2	Multi-display Assembly (w/ Navigation System) (for RHD)
   *3	Multi-display Assembly (w/ Audio and Visual System (w/ Multi-display))	*4	Accessory Meter Assembly (w/o Multi-display) (for LHD)
   *5	Accessory Meter Assembly (w/o Multi-display) (for RHD)	*6	Diagnostic Trouble Code (DTC)

4. 

   If the steps are difficult to read because they change automatically, press the "FRONT DEF" 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 "FRONT DEF" switch is pressed.

   Tip:

   Press the "OFF" switch to finish panel diagnosis.

   Table 4. Text in Illustration

   *1	Multi-media Module Receiver Assembly (w/ Navigation System) or Radio Receiver Assembly (w/ Audio and Visual System (w/ Multi-display)) (for LHD)	*2	Radio Receiver Assembly (w/ Audio and Visual System (w/o Multi-display)) (for LHD)
   *3	Multi-media Module Receiver Assembly (w/ Navigation System) (for RHD)	*4	Radio Receiver Assembly (w/ Audio and Visual System (w/o Multi-display)) (for RHD)

5. Clear the DTC

   
   
   1. 

      During the sensor check, press the "FRONT DEF" switch and "REAR DEF" switch simultaneously.

      Table 5. Text in Illustration

      *1	Multi-media Module Receiver Assembly (w/ Navigation System) or Radio Receiver Assembly (w/ Audio and Visual System (w/ Multi-display)) (for LHD)	*2	Radio Receiver Assembly (w/ Audio and Visual System (w/o Multi-display)) (for LHD)
      *3	Multi-media Module Receiver Assembly (w/ Navigation System) (for RHD)	*4	Radio Receiver Assembly (w/ Audio and Visual System (w/o Multi-display)) (for RHD)