AIR CONDITIONING SYSTEM ACTUATOR CHECK


  1. ACTUATOR CHECK


    1. Start the engine and warm it up.

    2. Perform the indicator check Click here.

    3. Push the recirculation/fresh switch to perform the actuator check.

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      Tech Tips

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

    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.

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      Tech Tips


      • The display blinks at 1 second intervals in step operation.

      • As an example, the illustration shows that display code 5 is output.

      • Push the OFF switch to finish panel diagnosis.

      • Push the AUTO switch to enter sensor check mode.

      Step No. Display Code Condition
      Blower Level Air Mix Damper Airflow Vent Air Inlet Damper Cool Air By-pass Damper Compressor
      1 0 0 0% open FACE FRESH -14 % OFF
      2 1 1 0% open FACE FRESH -14 % OFF
      3 2 17 0% open FACE RECIRCULATION/FRESH -14 % ON
      4 3 17 0% open FACE RECIRCULATION 113.50 % ON
      5 4 17 50% open B/L RECIRCULATION 113.50 % ON
      6 5 17 50% open B/L RECIRCULATION 113.50 % ON
      7 6 17 50% open FOOT FRESH 113.50 % ON
      8* 7 17 100% open FOOT-0 FRESH 113.50 % ON
      9 8 17 100% open F/D FRESH 113.50 % ON
      10 9 31 100% open DEF FRESH 113.50 % ON

      Tech Tips

      *: This only occurs for check mode. The air outlets remain the same but the air mix damper position will differ.

    5. If the steps are difficult to read because they change automatically, push the driver side TEMP up 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 driver side TEMP up switch is pushed.

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      Tech Tips


      • Push the OFF switch to finish panel diagnosis.

      • Push the recirculation/fresh switch to enter sensor check mode.