ELECTRICAL TYPE POWER HEATER SYSTEM SYSTEM DESCRIPTION


  1. MODE POSITION AND DAMPER OPERATION


    1. Front air conditioning mode position and damper operation

      A005GSZE02

      Tech Tips

      This Illustration is damper operation image. The number and location of the dampers is different to the actual unit.

      Text in Illustration
      *1 Blower with Fan Motor Sub-assembly *2 Heater Radiator Unit Sub-assembly
      *3 Front Defroster *4 Center Register
      *5 Side Register *6 Front Footwell Register Duct
      *7 Rear Footwell Register Duct *8 Quick Heater Assembly
      *a Fresh Air *b Recirculated Air
      Functions of Main Dampers:
      Control Damper Operation Position Damper Position Operation
      Air Inlet Control Damper FRESH A Allows outside air to enter.
      RECIRC B Recirculates internal air.
      Air Mix Control Damper MIN HOT to MAX HOT Temperature Setting C, D Continuously changes ratio of warm air.
      Mode Control Damper

      DEF

      A005K00       		O, R, E, Q Blows air from front defroster and side registers.

      FOOT / DEF

      A005JVN       		O, K, G, H Blows air from front defroster, side registers, front footwell register, and rear footwell register.

      FOOT

      A005MI9       		O, K, F, I Blows air from side registers, front footwell register, and rear footwell register. Also, blows some air from front defroster.

      BI-LEVEL

      A005JR7       		N, R, F, J Blows air from center register, side registers, front footwell register and rear footwell register.

      FACE

      A005LMQ       		M, L, E, J Blows air from center register and side registers.

  2. AIR OUTLETS AND AIRFLOW VOLUME


    1. Air Outlets and Airflow Volume

      A005GP4E01

      INDICATION

      (MODE)

      		 CTR SIDE FOOTWELL DEFROSTER
      A B C D
      A005LMQ

      FACE

      		 A005LC8 A005LC8 A005HYV A005HYV
      A005JR7

      BI-LEVEL

      		 A005L2F A005L2F A005MH8 A005HYV
      A005MI9

      FOOT

      		 A005HYV A005GF0 A005MH8 A005GF0
      A005JVN

      FOOT/DEF

      		 A005HYV A005L2F A005L2F A005L2F
      A005K00

      DEF

      		 A005HYV A005GF0 A005HYV A005LC8

      The size of the circle ○ indicates the proportion of airflow volume.

  3. QUICK HEATER ASSEMBLY


    1. General

      Quick Heater Control


      1. The quick heater assembly is located above the heater radiator unit sub-assembly in the air conditioning radiator assembly.

      2. The quick heater assembly consists of a PTC element, aluminum fin, and brass plate. When current is applied to the PTC element, it generates heat to warm the air that passes through the unit.

    2. PTC Heater Operating Conditions


      1. The on/off function of the quick heater assembly is controlled by the air conditioning amplifier assembly in accordance with the engine coolant temperature, engine speed, air mix setting, and electrical load (alternator power ratio).

      2. For example, the heating valve of the operating quick heater assemblies varies depending on the engine coolant temperature, shown as in the graph below:

    A005KAAE03