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                                                                                                   AC-35
               AIR CONDITIONING      -   HEATER UNIT
                                                                                                      AC3F0-01


                          INSPECTION
                          1.     INSPECT HEATER RADIATOR FINS FOR BLOCKAGE
                          If the fins are clogged, clean them with compressed air.
                          2.     INSPECT AIR MIX SERVOMOTOR CIRCUIT
                                 (See page DI-602 )
                          3.     INSPECT AIR MIX DAMPER POSITION CIRCUIT
                                 (See page DI-596 )



                          4.      Manual A/C model:
 COOL                4            INSPECT AIR MIX SERVOMOTOR
                          (a)     Inspect servomotor operation.
                                  (1) Connect the positive (+) lead from the battery to ter-
           5                           minal 5 and negative (-) lead to terminal 4, then
                                       check that the arm turns to "COOL" side smoothly.



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                                  (2) Connect the positive (+) lead from the battery to ter-
                                      minal 4 and negative (-) lead to terminal 5, then
                 4                    check that the arm turns to "WARM" side smoothly.
                          If operations are not as specified, replace the air mix servomo-
                     5    tor.


WARM
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                          (b)     Inspect position sensor resistance.
                                  Measure resistance between terminals at servomotor
 COOL                             arm each position as shown in the chart.
                                Tester connection              Condition             Specified condition

                 2                    2-3                Arm position at "COOL"         3.8 - 5.8 k
                 3                    2-3                Arm position at "WARM"        0.95 - 1.45 k
   4                      If resistance is not as specified, replace the servomotor.
       5




                 2
                 3
                4

                 5
WARM


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                                                    Author :                Date :                    1804

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