Air Conditioning Panel (For Sedan) Inspection

Vehicle Interior. Yaris. Ncp93, 131
Heating Air Conditioning. Yaris. Ncp93, 131

  1. INSPECT HEATER CONTROL BASE SUB-ASSEMBLY

  2. INSPECT HEATER CONTROL SUB-ASSEMBLY

  3. INSPECT NO. 3 HEATER CONTROL KNOB

Air Conditioning Panel (For Sedan) -- Inspection



1. INSPECT HEATER CONTROL BASE SUB-ASSEMBLY


Yaris. Ncp93, 131.Heating Air Conditioning.Air Conditioning System (For Sedan).Air Conditioning Panel (For Sedan) Inspection

  1. Check the heater control base resistance.

    1. Using an ohmmeter, measure the resistance and check the results in accordance with the values in the table below.

      Standard resistance:
      Tester Connection
      		Condition
      		Specified Condition
      2 (L) - 3 (E)
      		Always
      		10 kΩ or higher
      2 (L) - 4 (B)
      		A/C switch OFF
      		10 kΩ or higher
      3 (E) - 4 (B)
      		Always
      		10 kΩ or higher
      2 (L) - 4 (B)
      		A/C switch ON
      		Below 1 Ω
      5 (ILL+) - 6 (ILL-)
      		Always
      		Below 1 Ω
      If the result is not as specified, replace the heater control base.

  1. Check the A/C indicator operation.

    1. Connect the positive (+) lead from the battery to terminal 2 (L) and the negative (-) lead to terminal (E).

    2. Push the A/C switch in and check that the indicator lights up.

      Standard:
      Indicator lights up
      If the result is not as specified, replace the heater control base.

  1. Check the illumination operation.

    1. Connect the positive (+) lead from the battery to terminal 5 (ILL+) and the negative (-) lead to terminal 6 (ILL-), then check that the bulb illuminates.

      Standard:
      Bulb illuminates
      If the result is not as specified, replace the bulb.


2. INSPECT HEATER CONTROL SUB-ASSEMBLY


Yaris. Ncp93, 131.Heating Air Conditioning.Air Conditioning System (For Sedan).Air Conditioning Panel (For Sedan) Inspection

  1. Check the heater control resistance.

    1. Using an ohmmeter, measure the resistance and check the results in accordance with the values in the table below.

      Standard resistance:
      Switch Position
      		Tester Connection
      		Specified Condition
      OFF
      		ALL - 5 (E)
      		10 kΩ or higher
      LO
      		9 (LO) - 5 (E)
      		Below 1 Ω
      LO - M1
      		9 (LO) - 5 (E) - 7 (M1)
      		Below 1 Ω
      M1
      		9 (LO) - 5 (E) - 7 (M1)
      		Below 1 Ω
      M1 - M2
      		9 (LO) - 5 (E) - 7 (M1) - 6 (M2)
      		Below 1 Ω
      M2
      		9 (LO) - 5 (E) - 6 (M2)
      		Below 1 Ω
      M2 - HI
      		9 (LO) - 5 (E) - 6 (M2) - 10 (HI)
      		Below 1 Ω
      HI
      		9 (LO) - 5 (E) - 10 (HI)
      		Below 1 Ω
      If the result is not as specified, replace the heater control.

  1. Check the illumination operation.

    1. Connect the positive (+) lead from the battery to terminal 2 (ILL+) and the negative (-) lead to terminal 1 (ILL-), then check that the bulb illuminates.

      Standard:
      Bulb illuminates
      If the result is not as specified, replace the bulb.


3. INSPECT NO. 3 HEATER CONTROL KNOB


Yaris. Ncp93, 131.Heating Air Conditioning.Air Conditioning System (For Sedan).Air Conditioning Panel (For Sedan) Inspection

  1. Check the No. 3 heater control knob resistance.

    1. Using an ohmmeter, measure the resistance and check the results in accordance with the values in the table below.

      Standard resistance:
      Tester Connection
      		Condition
      		Specified Condition
      2 (RrDEF) - 1 (E)
      		Rr. DEF switch OFF
      		10 kΩ or higher
      2 (RrDEF) - 1 (E)
      		Rr. DEF switch ON
      		Below 1 Ω
      3 (IG) - 6 (MAX HOT)
      		Except MAX HOT
      		10 kΩ or higher
      3 (IG) - 6 (MAX HOT)
      		MAX HOT
      		Below 1 Ω
      4 (ILL-) - 5 (ILL+)
      		Always
      		Below 1 Ω
      7 (V/B) - 8 (SG)
      		Always
      		Below 1 Ω
      If the result is not as specified, replace the No. 3 heater control knob.

  1. Check the Rr. DEF indicator operation.

    1. Connect the positive (+) lead from the battery to terminal 3 (IG) and the negative (-) lead to terminal 1 (E).

    2. Push the Rr. DEF switch in and check that the indicator lights up.

      Standard:
      Indicator lights up
      If the result is not as specified, replace the No. 3 heater control knob.

  1. Check the illumination operation.

    1. Connect the positive (+) lead from the battery to terminal 5 (ILL+) and the negative (-) lead to terminal 4 (ILL-), then check that the bulb illuminates.

      Standard:
      Bulb illuminates
      If the result is not as specified, replace the bulb.