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Compressor And Magnetic Clutch: Inspection

  1. INSPECT COMPRESSOR AND MAGNETIC CLUTCH (A/C LOCK SENSOR) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      COMPRESSOR AND MAGNETIC CLUTCH (A/C LOCK SENSOR

      Tester Connection Condition Specified Condition
      1 - 2 Always (at 20°C (68°F)) 165 to 205 Ω

      If the resistance is not as specified, replace the compressor and magnetic clutch.

      Fig 1: Identifying A/C Compressor Connector Terminals
      G04978928Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT COMPRESSOR AND MAGNETIC CLUTCH (A/C COMPRESSOR SOLENOID) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      COMPRESSOR AND MAGNETIC CLUTCH (A/C COMPRESSOR SOLENOID)

      Tester Connection Condition Specified Condition
      2 - 1 20°C (68°F) 10 to 11 Ω

      If the resistance is not as specified, replace the compressor and magnetic clutch.

      Fig 2: Identifying Compressor And Magnetic Clutch Connector Terminals (A/C Compressor Solenoid)
      G04979173Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT COMPRESSOR AND MAGNETIC CLUTCH 
    1. Disconnect the connector from the compressor and magnetic clutch.
      Fig 3: Identifying Compressor And Magnetic Clutch Connector Terminals
      G04979174Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the connector from the magnetic clutch.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      COMPRESSOR AND MAGNETIC CLUTCH

      Tester Connection Condition Specified Condition
      A-3 - B-1 Always Below 1 Ω
      A-3 - Body ground Always 10 kΩ or higher

      If the resistance is not as specified, replace the compressor and magnetic clutch.

      Fig 4: Identifying Magnetic Clutch Connector Terminals
      G04979175Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSPECT MAGNETIC CLUTCH 
    1. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      MAGNETIC CLUTCH

      Tester Connection Condition Specified Condition
      1 - Body ground Always 3.4 to 3.8 Ω

      If the resistance is not as specified, replace the magnetic clutch.

      Fig 5: Identifying Magnetic Clutch Connector Terminals
      G04979176Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. When connector terminal 1 is connected to the positive (+) battery terminal, check that the following occurs: 1) the magnetic clutch's operating sound can be heard, and 2) the magnetic clutch's hub and rotor lock.

      OK: 

      1): The magnetic clutch's operating sound can be heard. 

      2): The magnetic clutch's hub and rotor lock. 

      If the result is not as specified, replace the magnetic clutch.

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