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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 119 (Heating / Air Conditioning System (Hybrid) - Diagnostics - Introduction) >> AIR CONDITIONING SYSTEM (for HV Model) >> Data List / Active Test [06/2018 - ] >> Data List / Active Test [06/2018 - ]

Data List / Active Test [06/2018 - ]

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  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 Techstream 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. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus:
      1. for Air Conditioner: Body Electrical / Air Conditioner / Data List.
      2. for Engine: Powertrain / Engine / Data List.
      3. for Rain and/or Humidity Sensor: Body Electrical / Rain and/or Humidity Sensor / Data List.
    5. Read the Data List according to the display on the Techstream.

      Body Electrical > Air Conditioner > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Room Temperature Sensor Cooler (room temp. sensor) thermistor Min.: -6.50°C (20.30°F)
      Max.: 57.25°C (135.05°F)      		 Actual cabin temperature displayed Cooler (room temp. sensor) thermistor circuit malfunction
      • When open circuit: -6.50°C (20.30°F)
      • When short circuit: 57.25°C (135.05°F)
      Ambient Temp Sensor Thermistor assembly Min.: -23.30°C (-9.94°F)
      Max.: 65.95°C (150.71°F)      		 Actual ambient temperature displayed Thermistor assembly circuit malfunction
      • When open circuit: -23.30°C (-9.94°F)
      • When short circuit: 65.95°C (150.71°F)
      Adjusted Ambient Temp Adjusted ambient temperature Min.: -30.80°C (-23.44°F)
      Max.: 50.80°C (123.44°F)      		 Adjust ambient temperature displayed Air conditioning amplifier assembly malfunction
      Evaporator Fin Thermistor No. 1 cooler thermistor Min.: -29.70°C (-21.46°F)
      Max.: 59.55°C (139.19°F)      		 Actual evaporator temperature displayed No. 1 cooler thermistor circuit malfunction
      • When open circuit: -29.70°C (-21.46°F)
      • When short circuit: 59.55°C (139.19°F)
      Evaporator Target Temp Evaporator target temperature Min.: -327.68°C (-557.82°F)
      Max.: 327.67°C (621.81°F)      		 Evaporator target temperature displayed No. 1 cooler thermistor circuit malfunction
      • When open circuit: -327.68°C (-557.82°F)
      • When short circuit: 327.67°C (621.81°F)
      Solar Sensor (D Side) Driver side automatic light control sensor Min.: 0
      Max.: 255      		 Driver side automatic light control sensor value increases as brightness increases Driver side automatic light control sensor circuit malfunction
      • When open circuit: 0
      • When short circuit: 255
      Solar Sensor (P Side) Front passenger side automatic light control sensor Min.: 0
      Max.: 255      		 Front passenger side automatic light control sensor value increases as brightness increases Front passenger side automatic light control sensor circuit malfunction
      • When open circuit: 0
      • When short circuit: 255
      Engine Coolant Temp Engine coolant temperature sensor Min.: 1.30°C (34.34°F)
      Max.: 90.55°C (194.99°F)      		 Actual engine coolant temperature displayed
      • SFI system malfunction
      • CAN communication system malfunction
      Blower Motor Speed Level Blower motor speed level Min.: 0
      Max.: 31      		 Displayed speed level increases in range between 0 and 31 as blower motor speed increases Blower motor with fan sub-assembly circuit malfunction
      Emission Gas Nox Sensor Emission gas (NOx) Min.: 0
      Max.: 255      		 Smog ventilation sensor value increases as gas amount increases Smog ventilation sensor circuit malfunction
      Emission Gas Sensor Emission gas (HC, CO) Min.: 0
      Max.: 255      		 Smog ventilation sensor value increases as gas amount increases Smog ventilation sensor circuit malfunction
      Regulator Pressure Sensor Air conditioner pressure sensor Min.: -456.68 kPaG
      Max.: 3294.37 kPaG      		 Actual refrigerant pressure displayed
      • Refrigerant line (gas leak etc.)
      • Air conditioner pressure sensor circuit malfunction
      Air Outlet Servo Pulse (R) No. 2 air conditioning radiator damper servo sub-assembly target pulse Min.: 128
      Max.: 383
      • FACE: 260 (pulse)
      • B/L: 212 (pulse)
      • FOOT: 182 (pulse)
      • F/D: 223 (pulse)
      • SHUT: 158 (pulse)
      • D/F: 177 (pulse)
      		 No. 2 air conditioning radiator damper servo sub-assembly circuit malfunction
      Air Outlet Servo Actual Pls(R) No. 2 air conditioning radiator damper servo sub-assembly actual pulse Min.: 128
      Max.: 383
      • FACE: 260 (pulse)
      • B/L: 212 (pulse)
      • FOOT: 182 (pulse)
      • F/D: 223 (pulse)
      • SHUT: 158 (pulse)
      • D/F: 177 (pulse)
      		 No. 2 air conditioning radiator damper servo sub-assembly circuit malfunction
      Air Mix Servo Targ Pulse(D) No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) target pulse Min.: 128
      Max.: 383
      • MAX COLD: 257 (pulse)
      • MAX HOT: 165 (pulse)
      		 No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) circuit malfunction
      Air Mix Servo Actual Pulse(D) No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) actual pulse Min.: 128
      Max.: 383
      • MAX COLD: 257 (pulse)
      • MAX HOT: 165 (pulse)
      		 No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) circuit malfunction
      Air Mix Servo Targ Pulse(P) No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) target pulse Min.: 128
      Max.: 383
      • MAX COLD: 255 (pulse)
      • MAX HOT: 347 (pulse)
      		 No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) circuit malfunction
      Air Mix Servo Actual Pulse(P) No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) actual pulse Min.: 128
      Max.: 383
      • MAX COLD: 255 (pulse)
      • MAX HOT: 347 (pulse)
      		 No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) circuit malfunction
      Air Outlet Servo Pulse (D) No. 3 air conditioning radiator damper servo sub-assembly target pulse Min.: 128
      Max.: 383
      • FACE-R: 271 (pulse)
      • FACE: 256 (pulse)
      • FACE1: 256 (pulse)
      • FACE2: 256 (pulse)
      • B/L: 245 (pulse)
      • B/L2: 245 (pulse)
      • FOOT-R: 215 (pulse)
      • FOOT: 215 (pulse)
      • FOOT-D: 207 (pulse)
      • FOOT-0: 224 (pulse)
      • F/D: 192 (pulse)
      • DEF-FOOT: 173 (pulse)
      • DEF or SHUT: 164 (pulse)
      • S-FLOW: 278 (pulse)
      		 No. 3 air conditioning radiator damper servo sub-assembly circuit malfunction
      Air Outlet Servo Actu Pulse(D) No. 3 air conditioning radiator damper servo sub-assembly actual pulse Min.: 128
      Max.: 383
      • FACE-R: 271 (pulse)
      • FACE: 256 (pulse)
      • FACE1: 256 (pulse)
      • FACE2: 256 (pulse)
      • B/L: 245 (pulse)
      • B/L2: 245 (pulse)
      • FOOT-R: 215 (pulse)
      • FOOT: 215 (pulse)
      • FOOT-D: 207 (pulse)
      • FOOT-0: 224 (pulse)
      • F/D: 192 (pulse)
      • DEF-FOOT: 173 (pulse)
      • DEF or SHUT: 164 (pulse)
      • S-FLOW: 278 (pulse)
      		 No. 3 air conditioning radiator damper servo sub-assembly circuit malfunction
      Air Outlet Servo Targ Pulse(P) No. 1 air conditioning radiator damper servo sub-assembly (front passenger side mode) target pulse Min.: 128
      Max.: 383
      • FACE-R: 241 (pulse)
      • FACE: 256 (pulse)
      • FACE1: 256 (pulse)
      • FACE2: 256 (pulse)
      • B/L: 267 (pulse)
      • B/L2: 267 (pulse)
      • FOOT-R: 297 (pulse)
      • FOOT: 297 (pulse)
      • FOOT-D: 305 (pulse)
      • FOOT-0: 288 (pulse)
      • F/D: 320 (pulse)
      • DEF-FOOT: 339 (pulse)
      • DEF or SHUT: 348 (pulse)
      • S-FLOW: 234 (pulse)
      		 No. 1 air conditioning radiator damper servo sub-assembly (front passenger side mode) circuit malfunction
      Air Outlet Servo Actu Pulse(P) No. 1 air conditioning radiator damper servo sub-assembly (front passenger side mode) actual pulse Min.: 128
      Max.: 383
      • FACE-R: 241 (pulse)
      • FACE: 256 (pulse)
      • FACE1: 256 (pulse)
      • FACE2: 256 (pulse)
      • B/L: 267 (pulse)
      • B/L2: 267 (pulse)
      • FOOT-R: 297 (pulse)
      • FOOT: 297 (pulse)
      • FOOT-D: 305 (pulse)
      • FOOT-0: 288 (pulse)
      • F/D: 320 (pulse)
      • DEF-FOOT: 339 (pulse)
      • DEF or SHUT: 348 (pulse)
      • S-FLOW: 234 (pulse)
      		 No. 1 air conditioning radiator damper servo sub-assembly (front passenger side mode) circuit malfunction
      Air Inlet Damper Targ Pulse No. 1 blower damper servo sub-assembly target pulse Min.: 128
      Max.: 383
      • Recirculation: 256 (pulse)
      • Fresh: 220 (pulse)
      		 No. 1 blower damper servo sub-assembly circuit malfunction
      Air Inlet Damper Actual Pulse No. 1 blower damper servo sub-assembly actual pulse Min.: 128
      Max.: 383
      • Recirculation: 256 (pulse)
      • Fresh: 220 (pulse)
      		 No. 1 blower damper servo sub-assembly circuit malfunction
      Compressor Speed Compressor speed Min.: 0 rpm
      Max.: 65535 rpm      		 Actual compressor speed displayed -
      Compressor Target Speed Compressor target speed Min.: 0 rpm
      Max.: 65535 rpm      		 Compressor target speed displayed -
      Shift Set Temperature Shift set temperature 2C decr, 1C decr, Normal, 1C incr or 2C incr Customized value displayed -
      Air Inlet Mode Air inlet mode Auto or Manual Customized value displayed *1
      Compressor Mode Compressor mode Auto or Manual Customized value displayed -
      Emission Gas Sensor Shift Emission gas sensor shift Mu Less, Less, Li Less, Normal, Li More, More, Mu More Customized value displayed -
      Noise and Vibration Reduction Function to change the speed of the compressor when set to ON OFF or ON Customized value displayed -
      ECO MODE Cancel Function to cancel ECO mode when set to ON OFF or ON Customized value displayed -
      ECO Switch ECO switch assembly (combination switch assembly) OFF or ON OFF: ECO switch assembly (combination switch assembly) not turned
      ON: ECO switch assembly (combination switch assembly) being turned and held at ECO position      		 ECO switch assembly (combination switch assembly) circuit malfunction
      Refrigerant Shortage Check Refrigerant shortage check ON or OFF Customized value displayed -
      Fan speed increment control Fan speed increment control Slow, Normal or Fast Customized value displayed -
      Foot/DEF Auto Mode Foot/defroster auto mode ON or OFF Customized value displayed -
      Foot/DEF Auto Blow Up Foot/defroster auto blower speed increase ON or OFF Customized value displayed -
      Ambient Temperature Shift Ambient temperature shift 3C decr, 2C decr, 1C decr, Normal, 1C incr, 2C incr or 3C incr Customized value displayed -
      Compressor Drive Check Compressor drive check OK or NG OK: Compressor drives
      NG: Compressor does not drive      		 -
      Glass Temperature Windshield glass temperature Min.: -327.68°C (-557.82°F)
      Max.: 327.67°C (621.81°F)      		 Actual windshield glass temperature is displayed -
      Glass Surroundings Temperature Temperature around windshield glass Min.: -327.68°C (-557.82°F)
      Max.: 327.67°C (621.81°F)      		 Actual temperature around windshield glass is displayed -
      Glass Humidity Windshield glass humidity Min.: 0.00%
      Max.: 100.00%      		 Actual windshield glass humidity is displayed -
      Refrigerant Gas Type Refrigerant gas type R134a or 1234yf Refrigerant gas type displayed -
      Set Temperature (D Side) Driver side set temperature Min.: MAX COLD
      Max.: MAX HOT      		 Driver side set temperature displayed -
      Set Temperature (P Side) Front passenger side set temperature Min.: MAX COLD
      Max.: MAX HOT      		 Front passenger side set temperature displayed -
      Operation Limitation Control History Count (Level1) History of auxiliary battery voltage drop in the past Min.: 0
      Max.: 255      		 Number of times auxiliary battery voltage dropped in the past displayed
      • Counted when voltage drops below the specified level due to over discharge while driving.
      • *2
      Operation Limitation Control History Count (Level2) History of auxiliary battery voltage drop in the past Min.: 0
      Max.: 255      		 Number of times auxiliary battery voltage dropped in the past displayed
      • Counted if voltage drops from the level when Operation Limitation Control History Count (Level1) is counted.
      • *2
      Outside Air Mode Auto Switch Function Outside air mode auto switch function ON or OFF Customized value displayed -
      S-FLOW Control Auto Function S-FLOW control auto function ON or OFF Customized value displayed -
      Number of Trouble Codes Number of trouble codes Min.: 0
      Max.: 255      		 Number of DTCs displayed -
      Refrigerant High Pressure History Refrigerant high pressure history Min.: 0
      Max.: 255      		 Number of times refrigerant high pressure history stored displayed *3
      1. *1: for USA and Canada
      2. *2: Refer to the following procedure to clear the A/C operation limitation history.

        Refer to UTILITY [06/2018 - ] 

      3. *3: Refer to the following procedure to clear the refrigerant high pressure history.

        Refer to UTILITY [06/2018 - ] 

      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).

      Body Electrical > Rain and/or Humidity Sensor > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Glass Humidity Windshield glass humidity Min.: 0.00%
      Max.: 100.00%      		 Actual windshield glass humidity is displayed -
      Glass Temperature Windshield glass temperature Min.: -327.68°C (-557.82°F)
      Max.: 327.67°C (621.81°F)      		 Actual windshield glass temperature is displayed -
      Glass Surroundings Temperature Temperature around windshield glass Min.: -327.68°C (-557.82°F)
      Max.: 327.67°C (621.81°F)      		 Actual temperature around windshield glass is displayed -
      Number of Trouble Code Number of trouble codes Min.: 0
      Max.: 255      		 Number of DTCs displayed -
  2. ACTIVE TEST 

    HINT: 

    Using the Techstream 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. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus:
      1. for Air Conditioner: Body Electrical / Air Conditioner / Active Test.
      2. for Engine: Powertrain / Engine / Active Test.
    5. Perform the Active Test according to the display on the Techstream.

      Body Electrical > Air Conditioner > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Blower Motor Blower motor with fan sub-assembly Min.: 0
      Max.: 31      		 -
      Compressor Target Speed Compressor with motor assembly Min.: 0
      Max.: 7500      		 -
      Defogger Relay (Rear) Rear window defogger OFF or ON -
      Deicer Relay (Front) Windshield deicer OFF or ON -
      Air Mix Servo Targ Pulse(D) No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) pulse Min.: 128
      Max.: 383      		 Operates between 165 and 257 pulses
      Air Mix Servo Targ Pulse(P) No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) pulse Min.: 128
      Max.: 383      		 Operates between 255 and 347 pulses
      Air Outlet Servo Pulse (D) No. 3 air conditioning radiator damper servo sub-assembly pulse Min.: 128
      Max.: 383      		 Operates between 164 and 278 pulses
      Air Inlet Damper Targ Pulse No. 1 blower damper servo sub-assembly pulse Min.: 128
      Max.: 383      		 Operates between 220 and 256 pulses
      Air Outlet Servo Pulse (P) No. 1 air conditioning radiator damper servo sub-assembly (front passenger side mode) pulse Min.: 128
      Max.: 383      		 Operates between 234 and 348 pulses
      A/O Servo Pulse(Rr D) No. 2 air conditioning radiator damper servo sub-assembly pulse Min.: 128
      Max.: 383      		 Operates between 158 and 260 pulses

      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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