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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating / Air Conditioning System (Except HV, W/ Auto A/C) - Diagnostics - Introduction >> AIR CONDITIONING SYSTEM (for Gasoline Model with Automatic Air Conditioning System) >> Data List / Active Test [11/2023 - ] >> Data List / Active Test [11/2023 - ]

Data List / Active Test [11/2023 - ]

  1. DATA LIST 
    NOTE:

    In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

    HINT: 

    Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

    1. Air Conditioner

      Body Electrical > Air Conditioner > Data List 

      Tester Display Measurement Item Range Normal Condition Inspection Item
      Total Distance Traveled Total distance traveled 0 to 999999 Total distance traveled -
      Total Distance Traveled - Unit Total distance traveled unit km / mile - -
      Room Temperature Sensor Room temp. sensor (cooler thermistor) -327.68 to 327.67°C Actual cabin temperature displayed Room temp. sensor (cooler thermistor) circuit malfunction
      Ambient Temperature Sensor Ambient temp. sensor (cooler thermistor) -327.68 to 327.67°C Actual ambient temperature displayed Ambient temp. sensor (cooler thermistor) circuit malfunction
      Front Left Solar Sensor Front left side solar sensor (automatic light control sensor) 0 to 6553.5 W/m^2 Front left side solar sensor (automatic light control sensor) value increases as brightness increases Solar sensor (automatic light control sensor) circuit malfunction
      Front Right Solar Sensor Front right side solar sensor (automatic light control sensor) 0 to 6553.5 W/m^2 Front right side solar sensor (automatic light control sensor) value increases as brightness increases Solar sensor (automatic light control sensor) circuit malfunction
      Engine Coolant Temperature Sensor Engine coolant temperature sensor -327.68 to 327.67°C Actual engine coolant temperature displayed
      • SFI system malfunction (Engine coolant temperature sensor circuit malfunction)
      • CAN communication system malfunction
      Evaporator Fin Thermistor Evaporator temp. sensor (No. 1 cooler thermistor) -327.68 to 327.67°C Actual evaporator temperature displayed Evaporator temp. sensor (No. 1 cooler thermistor) circuit malfunction
      Regulator Pressure Sensor Air conditioning pressure sensor -32768 to 32767 kPa (gauge) (-32.768 to 32.767 MPaG) Actual refrigerant pressure displayed
      • Refrigerant line (gas leak etc.)
      • Air conditioning pressure sensor circuit malfunction
      Rear Evaporator Temperature Sensor Rear evaporator temp. sensor (No. 2 air conditioning harness assembly) -327.68 to 327.67°C Actual rear evaporator temperature displayed Rear evaporator temp. sensor (No. 2 air conditioning harness assembly) circuit malfunction
      Rear Right Room Temperature Sensor No. 2 room temp. sensor (cooler thermistor) -327.68 to 327.67°C Actual rear cabin temperature displayed No. 2 room temp. sensor (cooler thermistor) circuit malfunction
      Front Left Seat Heat Sensor - - - Although this item is displayed on the GTS, it is not applicable to the air conditioning system.
      Front Right Seat Heat Sensor - - - Although this item is displayed on the GTS, it is not applicable to the air conditioning system.
      Rear Left Seat Heat Sensor - - - Although this item is displayed on the GTS, it is not applicable to the air conditioning system.
      Rear Right Seat Heat Sensor - - - Although this item is displayed on the GTS, it is not applicable to the air conditioning system.
      Ambient Temperature Adjustment Value Adjusted ambient temperature -327.68 to 327.67°C Adjust ambient temperature displayed Air conditioning amplifier assembly circuit malfunction
      Front Right Air Outlet Temperature Front right side target air outlet temperature -327.68 to 327.67°C Front right side target air outlet temperature displayed
      • MAX COLD: -327.68°C
      • MAX HOT: 327.67°C
      		 -
      Front Left Air Outlet Temperature Front left side target air outlet temperature -327.68 to 327.67°C Front left side target air outlet temperature displayed
      • MAX COLD: -327.68°C
      • MAX HOT: 327.67°C
      		 -
      Rear Right Air Outlet Temperature Rear side target air outlet temperature -327.68 to 327.67°C Rear side target air outlet temperature displayed
      • MAX COLD: -327.68°C
      • MAX HOT: 327.67°C
      		 -
      Evaporator Target Temperature Evaporator target temperature -327.68 to 327.67°C Evaporator target temperature displayed Evaporator temp. sensor (No. 1 cooler thermistor) circuit malfunction
      Driver Side Set Temperature Driver side set temperature MAX COLD / 14.0°C to 32.0°C (58°F to 90°F) / MAX HOT Driver side set temperature displayed Air conditioning control assembly circuit malfunction
      Passenger Side Set Temperature Passenger side set temperature MAX COLD / 14.0°C to 32.0°C (58°F to 90°F) / MAX HOT Passenger side set temperature displayed Air conditioning control assembly circuit malfunction
      Driver Side Rear Set Temperature Rear side set temperature MAX COLD / 14.0°C to 32.0°C (58°F to 90°F) / MAX HOT Rear side set temperature displayed No. 2 air conditioning control assembly circuit malfunction
      Front Left Air Mix Damper Control Servo Motor Target Pulse No. 1 air conditioning radiator damper servo sub-assembly (front left side air mix) target pulse 128 to 384
      • MAX COLD: 257 (pulse)
      • MAX HOT: 165 (pulse)
      		 No. 1 air conditioning radiator damper servo sub-assembly (front left side air mix) circuit malfunction
      Front Left Air Mix Damper Control Servo Motor Actual Pulse No. 1 air conditioning radiator damper servo sub-assembly (front left side air mix) actual pulse 128 to 384
      • MAX COLD: 257 (pulse)
      • MAX HOT: 165 (pulse)
      		 No. 1 air conditioning radiator damper servo sub-assembly (front left side air mix) circuit malfunction
      Front Right Air Mix Damper Control Servo Motor Target Pulse No. 1 air conditioning radiator damper servo sub-assembly (front right side air mix) target pulse 128 to 384
      • MAX COLD: 255 (pulse)
      • MAX HOT: 347 (pulse)
      		 No. 1 air conditioning radiator damper servo sub-assembly (front right side air mix) circuit malfunction
      Front Right Air Mix Damper Control Servo Motor Actual Pulse No. 1 air conditioning radiator damper servo sub-assembly (front right side air mix) actual pulse 128 to 384
      • MAX COLD: 255 (pulse)
      • MAX HOT: 347 (pulse)
      		 No. 1 air conditioning radiator damper servo sub-assembly (front right side air mix) circuit malfunction
      Front Left Air Outlet Damper Control Servo Motor Target Pulse - - - Cannot be used
      Front Left Air Outlet Damper Control Servo Motor Actual Pulse - - - Cannot be used
      Front Right Air Outlet Damper Control Servo Motor Target Pulse - - - Cannot be used
      Front Right Air Outlet Damper Control Servo Motor Actual Pulse - - - Cannot be used
      Air Inlet Damper Control Servo Motor Target Pulse No. 1 blower damper servo sub-assembly target pulse 128 to 384
      • Fresh: 220 (pulse)
      • Recirculation: 256 (pulse)
      		 No. 1 blower damper servo sub-assembly circuit malfunction
      Air Inlet Damper Control Servo Motor Actual Pulse No. 1 blower damper servo sub-assembly actual pulse 128 to 384
      • Fresh: 220 (pulse)
      • Recirculation: 256 (pulse)
      		 No. 1 blower damper servo sub-assembly circuit malfunction
      Front Air Outlet Damper Control Servo Motor Target Pulse No. 1 air conditioning radiator damper servo sub-assembly (front mode) target pulse 128 to 384
      • FACE: 256 (pulse)
      • B/L: 267 (pulse)
      • FOOT-A: 288 (pulse)
      • FOOT-R (F): 297 (pulse)
      • FOOT-D: 305 (pulse)
      • F/D-R: 320 (pulse)
      • D/F: 339 (pulse)
      • DEF: 348 (pulse)
      		 No. 1 air conditioning radiator damper servo sub-assembly (front mode) circuit malfunction
      Front Air Outlet Damper Control Servo Motor Actual Pulse No. 1 air conditioning radiator damper servo sub-assembly (front mode) actual pulse 128 to 384
      • FACE: 256 (pulse)
      • B/L: 267 (pulse)
      • FOOT-A: 288 (pulse)
      • FOOT-R (F): 297 (pulse)
      • FOOT-D: 305 (pulse)
      • F/D-R: 320 (pulse)
      • D/F: 339 (pulse)
      • DEF: 348 (pulse)
      		 No. 1 air conditioning radiator damper servo sub-assembly (front mode) circuit malfunction
      Rear Air Mix Damper Control Servo Motor Target Pulse Rear air mix damper servo sub-assembly target pulse 128 to 384
      • MAX COLD: 254 (pulse)
      • MAX HOT: 299 (pulse)
      		 Rear air mix damper servo sub-assembly circuit malfunction
      Rear Air Mix Damper Control Servo Motor Actual Pulse Rear air mix damper servo sub-assembly actual pulse 128 to 384
      • MAX COLD: 254 (pulse)
      • MAX HOT: 299 (pulse)
      		 Rear air mix damper servo sub-assembly circuit malfunction
      Rear Air Outlet Damper Control Servo Motor Target Pulse Rear mode damper servo sub-assembly target pulse 128 to 384
      • FACE: 276 (pulse)
      • B/L: 233 (pulse)
      • FOOT: 200 (pulse)
      		 Rear mode damper servo sub-assembly circuit malfunction
      Rear Air Outlet Damper Control Servo Motor Actual Pulse Rear mode damper servo sub-assembly actual pulse 128 to 384
      • FACE: 276 (pulse)
      • B/L: 233 (pulse)
      • FOOT: 200 (pulse)
      		 Rear mode damper servo sub-assembly circuit malfunction
      Solenoid Valve Control Current Value Solenoid valve control current 0 to 1000 mA Value changes between 0 A and 0.997 A in accordance with solenoid valve operation -
      Refrigerant Gas Type Refrigerant gas type R134a / Hfo1234yf Refrigerant gas type displayed -
      Refrigerant High Pressure History Count Refrigerant high pressure history 0 to 255 Number of times refrigerant high pressure history stored displayed *1
      Refrigerant Low Pressure History Count Refrigerant low pressure history 0 to 255 Number of times refrigerant low pressure history stored displayed *1
      Operation Limit Control History Count History of battery voltage drop in the past 0 to 255 Number of times battery voltage dropped in the past displayed Counted when voltage drops below the specified level due to over discharge while driving.
      HINT: 
      Make sure to delete the vehicle control history after performing an inspection.*2
      Efficient Ventilation Mode Function to automatically change ambient air induction and room circulation is set. OFF / ON Customized value displayed -
      Foot/DEF Automatic Blow Up Function Function to turn the air flow from Foot/DEF ON automatically when AUTO MODE is ON. OFF / ON Customized value displayed -
      Foot/DEF Auto Mode Function to turn the air flow from Foot/DEF ON automatically when AUTO MODE is ON. OFF / ON Customized value displayed -
      ECO Mode Control This function switches ON/OFF of the controlling function of the air conditioning by ECO mode. If there is no ECO MODE switch, this customize function is not available. OFF / ON Customized value displayed -
      Fan Speed Increment Control This function is defining how fast the A/C blower goes to the target air capacity when first activating the A/C. Short / Normal / Long Customized value displayed -
      Outside Air Mode Auto Switch Function This function switches ON/OFF of the function to switch the suction opening to the outside air mode automatically at the time of the ignition switch off. OFF / ON Customized value displayed -
      S-FLOW Control Auto Function When ignition switch is turned to ON, ON/OFF of the function to operate in the S-FLOW Control Auto is switched. OFF / ON Customized value displayed -
      A/C Auto Switch Mode Function to turn the A/C ON automatically by pressing the AUTO button when the blower is ON and the A/C is OFF. OFF / ON Customized value displayed -
      Evaporator Control Function to set the evaporator control to the Automatic position (AUTO) to save power or to the coldest position (MANUAL) to dehumidify the air and to prevent the windows fogging up. Manual / Automatic Customized value displayed -
      Ambient Temperature Adjustment Function to control with the shifted ambient temperature against the display ambient temperature. -3C / -2C / -1C / Normal / +1C / +2C / +3C Customized value displayed -
      Set Temperature Shift Function to control with the shifted temperature against the display temperature. -2C / -1C / Normal / +1C / +2C Customized value displayed -
      Seat Airflow Mode Setting - - - Although this item is displayed on the GTS, it is not applicable to the air conditioning system.
      Refrigerant Shortage Check Function to cancel the refrigerant shortage check when item is OFF. (The verification mode is excluded.) OFF / ON Customized value displayed -
      Blower Level Blower motor speed level 0 to 31 Displayed speed level increases in range between 0 and 31 as blower motor speed increases Blower motor with fan sub-assembly circuit malfunction
      Rear Blower Level Rear blower motor speed level 0 to 31 Displayed speed level increases in range between 0 and 31 as rear blower motor speed increases Rear blower motor with fan sub-assembly circuit malfunction
      Water Pump Operation condition of the heater water pump assembly OFF / ON ON: Heater water pump assembly operating
      OFF: Heater water pump assembly not operating      		 -
      A/C Driving Demand A/C control cutoff signal ON / OFF The ECM sends the air conditioning control cutoff signal displayed -
      Rear Defogger Relay - - - Although this item is displayed on the GTS, it is not applicable to the air conditioning system.
      Front Deicer Relay - - - Although this item is displayed on the GTS, it is not applicable to the air conditioning system.
      Steering Heater - - - Although this item is displayed on the GTS, it is not applicable to the air conditioning system.
      Front Right Seat Heater - - - Although this item is displayed on the GTS, it is not applicable to the air conditioning system.
      Front Left Seat Heater - - - Although this item is displayed on the GTS, it is not applicable to the air conditioning system.
      Rear Right Seat Heater - - - Although this item is displayed on the GTS, it is not applicable to the air conditioning system.
      Rear Left Seat Heater - - - Although this item is displayed on the GTS, it is not applicable to the air conditioning system.
      Front Right Seat Blower - - - Although this item is displayed on the GTS, it is not applicable to the air conditioning system.
      Front Left Seat Blower - - - Although this item is displayed on the GTS, it is not applicable to the air conditioning system.
      Front Left Air Mix Damper Control Servo Motor Initialization History Count Displays the initialization history count 0 to 255 - -
      Front Right Air Mix Damper Control Servo Motor Initialization History Count Displays the initialization history count 0 to 255 - -
      Front Left Air Outlet Damper Control Servo Motor Initialization History Count - - - Cannot be used
      Front Right Air Outlet Damper Control Servo Motor Initialization History Count - - - Cannot be used
      Air Inlet Damper Control Servo Motor Initialization History Count Displays the initialization history count 0 to 255 - -
      Front Air Outlet Damper Control Servo Motor Initialization History Count Displays the initialization history count 0 to 255 - -
      Rear Air Mix Damper Control Servo Motor Initialization History Count Displays the initialization history count 0 to 255 - -
      Rear Air Outlet Damper Control Servo Motor Initialization History Count Displays the initialization history count 0 to 255 - -
      Efficient Ventilation Mode (Driver1) Displays the customized value set by My Settings OFF / ON Customized value displayed For vehicles with air conditioning system set by My Settings
      A/C Auto Switch Mode (Driver1) Displays the customized value set by My Settings OFF / ON Customized value displayed For vehicles with air conditioning system set by My Settings
      Efficient Ventilation Mode (Driver2) Displays the customized value set by My Settings OFF / ON Customized value displayed For vehicles with air conditioning system set by My Settings
      A/C Auto Switch Mode (Driver2) Displays the customized value set by My Settings OFF / ON Customized value displayed For vehicles with air conditioning system set by My Settings
      Efficient Ventilation Mode (Driver3) Displays the customized value set by My Settings OFF / ON Customized value displayed For vehicles with air conditioning system set by My Settings
      A/C Auto Switch Mode (Driver3) Displays the customized value set by My Settings OFF / ON Customized value displayed For vehicles with air conditioning system set by My Settings
      1. *1: Refer to the following procedure to clear the refrigerant pressure history.

        Refer to UTILITY [11/2023 - ] 

      2. *2: Refer to the following procedure to clear the A/C operation limitation history.

        Refer to UTILITY [11/2023 - ] 

    2. Engine

      Powertrain > Engine > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Coolant Temperature Engine coolant temperature Min.: -40°C (-40°F)
      Max.: 140°C (284°F)      		 75 to 100°C (167 to 212°F): After warming up This is the engine coolant temperature.

      HINT: 

      • After warming up the engine, the engine coolant temperature will be 75 to 100°C (167 to 212°F).
      • After a long soak, the engine coolant temperature, intake air temperature and ambient air temperature will be approximately equal.
      • If the value is -40°C (-40°F), or higher than 135°C (275°F), the sensor circuit is open or shorted.
      • Check if the engine overheats if the value indicated is higher than 135°C (275°F).
  2. ACTIVE TEST 

    HINT: 

    Using the GTS to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

    1. Air Conditioner

      Body Electrical > Air Conditioner > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Blower Level This test activates the blower motor to adjust the air volume high/low.
      (Blower motor with fan sub-assembly)      		 0: Air Volume Low
      31: Air Volume High      		 Operate with the ignition switch ON.
      Rear Blower Level This test activates the rear blower motor to adjust the air volume high/low.
      (Rear blower motor with fan sub-assembly)      		 0: Air Volume Low
      31: Air Volume High      		 Operate with the ignition switch ON.
      Water Pump This test activates the water pump. Water pump operation can be verified by sound from inside the vehicle.
      (Heater water pump assembly)      		 ON: Drive
      OFF: Stop      		 Operate with the ignition switch ON (Engine running).
      A/C Driving Demand This test activates the Air Conditioning System.
      (Compressor with pulley assembly)      		 OFF / ON Operate with Ignition switch ON (Engine running) and the vehicle stopped.
      Rear Defogger Relay - - Although this test is displayed on the GTS, it is not applicable to the air conditioning system.
      Front Deicer Relay - - Although this test is displayed on the GTS, it is not applicable to the air conditioning system.
      Steering Heater - - Although this test is displayed on the GTS, it is not applicable to the air conditioning system.
      Front Right Seat Heater - - Although this test is displayed on the GTS, it is not applicable to the air conditioning system.
      Front Left Seat Heater - - Although this test is displayed on the GTS, it is not applicable to the air conditioning system.
      Rear Right Seat Heater - - Although this test is displayed on the GTS, it is not applicable to the air conditioning system.
      Rear Left Seat Heater - - Although this test is displayed on the GTS, it is not applicable to the air conditioning system.
      Front Right Seat Blower - - Although this test is displayed on the GTS, it is not applicable to the air conditioning system.
      Front Left Seat Blower - - Although this test is displayed on the GTS, it is not applicable to the air conditioning system.
      Rear Right Seat Blower - - Although this test is displayed on the GTS, it is not applicable to the air conditioning system.
      Rear Left Seat Blower - - Although this test is displayed on the GTS, it is not applicable to the air conditioning system.
      Front Left Air Mix Damper Control Servo Motor This test activates the front left air mix damper control servo motor.
      (No. 1 air conditioning radiator damper servo sub-assembly (front left side air mix))      		 128: Min
      384: Max      		 Operate with the ignition switch ON.
      Front Right Air Mix Damper Control Servo Motor This test activates the front right air mix damper control servo motor.
      (No. 1 air conditioning radiator damper servo sub-assembly (front right side air mix))      		 128: Min
      384: Max      		 Operate with the ignition switch ON.
      Front Left Air Outlet Damper Control Servo Motor - - Cannot be used
      Front Right Air Outlet Damper Control Servo Motor - - Cannot be used
      Air Inlet Damper Control Servo Motor This test activates the air inlet damper control servo motor.
      (No. 1 blower damper servo sub-assembly)      		 128: Min
      384: Max      		 Operate with the ignition switch ON.
      Front Air Outlet Damper Control Servo Motor This test activates the front air outlet damper control servo motor.
      (No. 1 air conditioning radiator damper servo sub-assembly (front mode))      		 128: Min
      384: Max      		 Operate with the ignition switch ON.
      Rear Air Mix Damper Control Servo Motor This test activates the rear air mix damper control servo motor.
      (Rear air mix damper servo sub-assembly)      		 128: Min
      384: Max      		 Operate with the ignition switch ON.
      Rear Air Outlet Damper Control Servo Motor This test activates the rear air outlet damper control servo motor.
      (Rear mode damper servo sub-assembly)      		 128: Min
      384: Max      		 Operate with the ignition switch ON.
    2. Engine

      Powertrain > Engine > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Control the Engine Cooling Fan Duty Ratio Control the cooling fan 0 to 100% Perform this test when vehicle is stopped.
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