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Home >> Toyota >> 2021 >> Camry LE, FWD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning System (Auto A/C) - Diagnostic Codes (2 Of 2) & Symptom Tests (Except Hybrid) >> AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System) >> Air Conditioning Compressor Magnetic Clutch Circuit [06/2017 - ] >> Procedure

Air Conditioning Compressor Magnetic Clutch Circuit [06/2017 - ]: Procedure

  1. INSPECT MAGNETIC CLUTCH RELAY 
    1. Remove the magnetic clutch relay.
    2. Inspect the magnetic clutch relay.

      Refer to ON-VEHICLE INSPECTION [06/2017 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE MAGNETIC CLUTCH RELAY 

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (MAGNETIC CLUTCH RELAY - POWER SOURCE) 
    1. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      Relay terminal 3 - Body ground Always 11 to 14 V
      Relay terminal 1 - Body ground Ignition switch off Below 1 V
      Relay terminal 1 - Body ground Ignition switch ON 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (MAGNETIC CLUTCH RELAY - AIR CONDITIONING AMPLIFIER ASSEMBLY) 
    1. Disconnect the K55 air conditioning amplifier assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Relay terminal 2 - K55-9 (MGC) Always Below 1 Ω
      Relay terminal 2 or K55-9 (MGC) - Other terminals and body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (MAGNETIC CLUTCH RELAY - MAGNET CLUTCH ASSEMBLY AND BODY GROUND) 
    1. Disconnect the C63 magnet clutch assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Relay terminal 5 - C63-3 (MG+) Always Below 1 Ω
      Relay terminal 5 - C63-3 (MG+) - Other terminals and body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (MAGNET CLUTCH ASSEMBLY - BODY GROUND) 
    1. Install the magnetic clutch relay.
    2. Connect the C63 magnet clutch assembly connector.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      C63-3 (MG+) - Body ground Engine running
      (A/C switch: Off)      		 Below 1 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAGNET CLUTCH ASSEMBLY. Refer to  DISASSEMBLY [06/2017 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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