AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System) Heater Control Switch Circuit

DESCRIPTION

The temperature control switch assembly LH and RH sends the temperature up and down signal to the air conditioning amplifier assembly through the air conditioning control assembly.

WIRING DIAGRAM

A01X5Z6E01

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC B14B2 is not output..

    NG

    GO TO DTC B14B2 Click here

    OK

  2. CHECK OPERATION


    1. Check that the temperature control switches operate.

      Result
      Result Proceed to
      Temperature control switch LH does not operate A
      Temperature control switch RH does not operate B
      Temperature control switch LH and RH do not operate C

    B

    INSPECT TEMPERATURE CONTROL SWITCH ASSEMBLY RH Click here

    C

    CHECK AIR CONDITIONING CONTROL ASSEMBLY Click here

    A

  3. INSPECT TEMPERATURE CONTROL SWITCH ASSEMBLY LH


    1. A01X0LOE10
      Text in Illustration
      *a

      Component without harness connected

      (Temperature Control Switch Assembly LH)

      Remove the temperature control switch assembly LH Click here.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      3 (UP) - 4 (SE) UP switch pressed Below 1 Ω
      UP switch not pressed 10 kΩ or higher
      5 (DOWN) - 4 (SE) DOWN switch pressed Below 1 Ω
      DOWN switch not pressed 10 kΩ or higher

    NG

    REPLACE TEMPERATURE CONTROL SWITCH ASSEMBLY LH Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (TEMPERATURE CONTROL SWITCH ASSEMBLY LH - AIR CONDITIONING CONTROL ASSEMBLY)


    1. Disconnect the F133 temperature control switch assembly LH connector.

    2. Disconnect the F10 air conditioning control assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      F133-3 (UP) - F10-12 (DTP+) Always Below 1 Ω
      F133-5 (DOWN) - F10-11 (DTP-) Always Below 1 Ω
      F133-4 (SE) - F10-9 (S5) Always Below 1 Ω
      F133-3 (UP) - Body ground Always 10 kΩ or higher
      F133-5 (DOWN) - Body ground Always 10 kΩ or higher
      F133-4 (SE) - Body ground Always 10 kΩ or higher

    OK

    REPLACE AIR CONDITIONING CONTROL ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. INSPECT TEMPERATURE CONTROL SWITCH ASSEMBLY RH


    1. A01X0LOE11
      Text in Illustration
      *a

      Component without harness connected

      (Temperature Control Switch Assembly LH)

      Remove the temperature control switch assembly RH Click here.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      5 (UP) - 4 (SE) UP switch pressed Below 1 Ω
      UP switch not pressed 10 kΩ or higher
      3 (DOWN) - 4 (SE) DOWN switch pressed Below 1 Ω
      DOWN switch not pressed 10 kΩ or higher

    NG

    REPLACE TEMPERATURE CONTROL SWITCH ASSEMBLY RH Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (TEMPERATURE CONTROL SWITCH ASSEMBLY RH - AIR CONDITIONING CONTROL ASSEMBLY)


    1. Disconnect the F132 temperature control switch assembly RH connector.

    2. Disconnect the F10 air conditioning control assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      F132-5 (UP) - F10-10 (PTP+) Always Below 1 Ω
      F132-3 (DOWN) - F10-3 (PTP-) Always Below 1 Ω
      F132-4 (SE) - F10-2 (SG) Always Below 1 Ω
      F132-5 (UP) - Body ground Always 10 kΩ or higher
      F132-3 (DOWN) - Body ground Always 10 kΩ or higher
      F132-4 (SE) - Body ground Always 10 kΩ or higher

    OK

    REPLACE AIR CONDITIONING CONTROL ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. CHECK AIR CONDITIONING CONTROL ASSEMBLY


    1. Replace the air conditioning control assembly with a new or normally functioning one Click here.

    2. Check that the temperature control with temperature control switch LH and RH.

      OK
      Temperature control with temperature control switch LH and RH.

    OK

    END (AIR CONDITIONING CONTROL ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here