LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2007 >> Matrix Base, Automatic >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning >> Air Conditioning Control Assembly >> Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Air Conditioning Control Assembly: Inspection

  1. INSPECT AIR CONDITIONING CONTROL ASSEMBLY 
    1. Inspect the blower switch.
      1. Measure the resistance according to the value(s) in the table below.

        Standard resistance 

        RESISTANCE REFERENCE CHART

        Tester Connection Condition Specified Condition
        - OFF 10 kΩ or higher
        5 - 6 LO Below 1 Ω
        2 - 5 - 6 M1 Below 1 Ω
        1 - 5 - 6 M2 Below 1 Ω
        4 - 5 - 6 HI Below 1 Ω
        Fig 1: Identifying Blower Switch Connectors
        G05195421Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        If the resistance is not as specified, replace the air conditioning control assembly.

    2. Inspect illumination operation.
      1. Connect the positive (+) lead from the battery to terminal 8 and the negative (-) lead to terminal 3, then check that the illuminations light up.

        If the bulb does not light up, replace the bulb.

    3. Inspect the defroster mode switch.
      1. Measure the resistance according to the value(s) in the table below.

        Standard resistance 

        RESISTANCE REFERENCE CHART

        Tester Connection Condition Specified Condition
        2 - 5 A/C switch: ON Below 1 Ω

        If the resistance is not as specified, replace the air conditioning control assembly.

        Fig 2: Identifying Defroster Mode Switch Connectors
        G05236315Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT COMBINATION SWITCH ASSEMBLY 
    1. Inspect the A/C switch.
      1. Measure the resistance according to the value(s) in the table below.

        Standard resistance 

        RESISTANCE REFERENCE CHART

        Tester Connection Condition Specified Condition
        8 - 9 A/C switch: ON Below 1 Ω
        8 - 10 A/C switch: ON 2.2 kΩ

        If the resistance is not as specified, replace the combination switch assembly.

        Fig 3: Identifying A/C Switch Connectors
        G05236316Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Inspect indicator operation.
      1. Connect the positive (+) lead from the battery to terminal 8 and the negative (-) lead to terminal 10 while the A/C switch is pressed, then check that the illuminations light up.

        If operation is not as specified, replace the combination switch assembly.

    3. Inspect the R/F switch.
      1. Measure the resistance according to the value(s) in the table below.

        Standard resistance 

        RESISTANCE REFERENCE CHART

        Tester Connection Condition Specified Condition
        2 - 3 R/F switch: RECIRCULATION Below 1 Ω
        2 - 3 R/F switch: FRESH 10 kΩ or higher

        If the resistance is not as specified, replace the combination switch assembly.

    4. Inspect indicator operation.
      1. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 4, then check that the indicator lights up.

        If operation is not as specified, replace the combination switch assembly.

    5. Inspect illumination operation.
      1. Connect the positive (+) lead from the battery to terminal 7 and the negative (-) lead to terminal 5, then check that the illuminations light up.

        If the bulb does not light up, replace the bulb.

scientia non olet · About LEMON Manuals