LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2016 >> Highlander Hybrid Limited >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning System - Diagnostic Codes & Circuit Tests - (Hybrid) >> Air Conditioning System >> DTC B1475/75: A/C Inverter Cooling / Heating System Malfunction [11/2016 - ] >> Procedure

DTC B1475/75: A/C Inverter Cooling / Heating System Malfunction [11/2016 - ]: Procedure

  1. CHECK CAN COMMUNICATION SYSTEM 
    1. Using the Techstream, check if the CAN communication system is functioning normally.

      Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2016 - ]

      Result

      Result Proceed to
      CAN communication system DTCs are not output A
      CAN communication system DTCs are output B

    Result:  2

    B 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2016 - ] 

    Result:  1

    A 

    See step  2

  2. PERFORM ACTIVE TEST USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine and ECT / Active Test.
    5. Check the operation by referring to the table below.

      Powertrain > Engine and ECT > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Control the Electric Cooling Fan Control electric cooling fan motor ON/OFF Perform this test when the following conditions are met:
      • Power switch on (IG)
      • Engine stopped
      • Shift lever in P

      Powertrain > Engine and ECT > Active Test 

      Tester Display
      Control the Electric Cooling Fan

      OK

      Electric cooling fan operates smoothly.

      Result

      Proceed to
      OK
      NG

    Result:  2

    NG 

    GO TO COOLING FAN SYSTEM. Refer to  ON-VEHICLE INSPECTION [11/2016 - ] 

    Result:  1

    OK 

    See step  3

  3. CHECK REFRIGERANT PRESSURE 
    GTY136308Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Install a manifold gauge set.

      Refer to ON-VEHICLE INSPECTION [02/2014 - ]

    2. Turn the power switch on (READY).
    3. Read the manifold gauge pressure when the following conditions are met.
      1. Prepare the vehicle according to the table below.
        MEASUREMENT CONDITION:

        Item Condition
        Vehicle doors Fully open
        Temperature setting MAX COLD
        Blower speed HI
        A/C switch On
        Recirculation/fresh switch RECIRCULATION
        Interior temperature 25 to 35°C (77 to 95°F)

      Standard Pressure

      Low pressure side 

      150 to 250 kPa (1.5 to 2.5 kgf/cm2 , 22 to 36 psi)

      High pressure side 

      1370 to 1570 kPa (14 to 16 kgf/cm2 , 199 to 228 psi)

      Result

      Proceed to
      OK
      NG

    Result:  2

    NG 

    CHARGE REFRIGERANT. Refer to  REPLACEMENT [02/2014 - ] 

    Result:  1

    OK 

    See step  4

  4. READ OUTPUT DTC (DTC B1475/75) 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [02/2014 - ]

      Body Electrical > Air Conditioner > Clear DTCs 

    2. Turn the power switch on (READY).
    3. Prepare the vehicle according to the table below.
      MEASUREMENT CONDITION:

      Item Condition
      Blower speed HI
      A/C switch On
      Temperature setting MAX COLD
    4. Check for DTCs.

      Refer to DTC CHECK / CLEAR [02/2014 - ]

      Body Electrical > Air Conditioner > Trouble Codes 

      Result

      Result Proceed to
      DTC B1475/75 is not output (normal) A
      DTC B1475/75 is output B
      NOTE:

      If the engine continuously idles when the ambient temperature is high, the compressor with motor assembly may automatically stop to protect the inverter circuit, and DTC B1475/75 may be stored.

    Result:  1

    A 

    SYSTEM IS OK 

    Result:  2

    B 

    REPLACE COMPRESSOR WITH MOTOR ASSEMBLY. Refer to  REMOVAL [11/2016 - ] 

scientia non olet · About LEMON Manuals