FixVault
Home › Lexus › 2009 › LS 460L AWD › Repair and Diagnosis › Heating, Ventilation & A/C (HVAC) › HVAC Control Systems › Air Conditioning › Air Conditioning System › Data List/Active Test

Data List/Active Test

  1. DATA LIST 

    HINT:

    Using the Techstream to read the Data List allows the values or states of switches, sensor, 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 by discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

    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.
    1. Warm up the engine.
    2. Turn the engine switch off.
    3. Connect the Techstream to the DLC3.
    4. Turn the engine switch on (IG).
    5. Turn the Techstream on.
    6. Enter the following menus: Body Electrical/(desired menu)/Data List /
    7. According to the display on the Techstream, read the "Data List".

      Air Conditioner 

      AIR CONDITIONER REFERENCE CHART

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Room Temperature Sensor Room temperature sensor /
      Min.: -6.5°C (20.3°F)
      Max.: 57.25°C (135.05°F)      		 Actual room temperature for front seat is displayed Open in circuit: -6.5°C (20.3°F)
      Short in circuit: 57.25°C (135.05°F)
      Ambient Temp Sensor Ambient temperature sensor /
      Min.: -23.3°C (-9.94°F)
      Max.: 65.95°C (150.71°F)      		 Actual ambient temperature is displayed Open in circuit: -23.3°C (-9.94°F)
      Short in circuit: 65.95°C (150.71°F)
      Evaporator Fin Thermistor Evaporator fin thermistor /
      Min.: -29.7°C (-21.46°F)
      Max.: 59.55°C (139.19°F)      		 Actual evaporator temperature is displayed Open in circuit: -29.7°C (-21.46°F)
      Short in circuit: 59.55°C (139.19°F)
      Evaporator Target Temp Target evaporator temperature
      Min=-327.68°C (-557.8°F)
      Max=327.67°C (621.8°F)      		 Target evaporator temperature is displayed -
      Solar Sensor (D Side) Driver side solar sensor /
      Min.: 0, Max.: 255      		 Driver side solar sensor voltage increases as brightness increases Open in circuit: 0
      Short in circuit: 255
      Solar Sensor (P Side) Passenger side solar sensor /
      Min.: 0, Max.: 255      		 Passenger side solar sensor voltage increases as brightness increases Open in circuit: 0
      Short in circuit: 255
      Engine Coolant Temp Engine coolant temperature /
      Min.: 1.3°C (34.34°F)
      Max.: 90.55°C (194.99°F)      		 Actual engine coolant temperature is displayed while engine is warmed up -
      Duct Sensor (D Side) Duct sensor (for driver side) /
      Min.: -12.7°C (9.14°F)
      Max.: 76.55°C (169.79°F)      		 Actual duct temperature is displayed (for driver side) -
      Duct Sensor (P Side) Duct sensor (for passenger side) /
      Min.: -12.7°C (9.14°F)
      Max.: 76.55°C (169.79°F)      		 Actual duct temperature is displayed (for passenger side) -
      Set Temperature (D Side) Driver side set temperature /
      Min.: MAX COLD (0°C (32°F))
      Max.: MAX HOT (30°C (86°F))      		 Driver side actual set temperature is displayed -
      Set Temperature (P Side) Passenger side set temperature /
      Min.: MAX COLD (0°C (32°F))
      Max.: MAX HOT (30°C (86°F))      		 Passenger side actual set temperature is displayed -
      Hand Free Telephone Handsfree telephone/OFF or ON ON: Handsfree telephone is used
      OFF: Handsfree telephone is not used      		 -
      Blower Motor Speed Level Blower motor speed level /
      Min.: 0 level,
      Max.: 31 level      		 Increases in range between 0 and 31 as blower motor speed increases -
      Adjusted Ambient Temp Adjusted ambient temperature /
      Min.: -30.8°C (-23.44°F)
      Max.: 50.8°C (123.44°F)      		 Adjusted ambient temperature is displayed -
      Emission Gas Sensor Emission gas sensor /
      Min.: 0, Max.: 255      		 Increases as the gas amount increases -
      Air Inlet Damper Targ Pulse Air inlet damper target pulse /
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      Cool Air Bypass Pulse Driver side cool air bypass servo motor target pulse /
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      Rear Solar Sensor Rear solar sensor /
      Min.: 0, Max.: 255      		 Rear solar sensor voltage increases as brightness increases Open in circuit: 0
      Short in circuit: 255
      Emission Gas Nox Sensor Emission gas NOx sensor /
      Min.: 0, Max.: 255      		 Increases as gas amount increases -
      Regulator Pressure Sensor Refrigerant pressure sensor /
      Min.: 0 kgf/cm2 G
      Max.: 38.25 kgf/cm2 G      		 Actual refrigerant pressure is displayed -
      Regulator Control Current Refrigerant control current /
      Min.: 0 A
      Max.: 0.997 A      		 Value changes between 0 A and 0.997 A in accordance with compressor and magnetic clutch operation -
      Room Temp Sensor (Rear) Rear room temperature sensor (for LH seat) /
      Min.: -6.5°C (20.3°F)
      Max.: 57.25°C (135.05°F)      		 Actual rear room temperature for LH seat is displayed Open circuit: -6.5°C (20.3°F)
      Short circuit: 57.25°C (135.05°F)
      Blower Motor Level (Rear) Rear blower motor speed level /
      Min.; 0, Max.: 31      		 Increases in range between 0 to 31 as rear blower motor speed increases -
      HOT A/M Servo Targ Pls (D) Driver side HOT air mix servo motor target pulse /
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      COOL A/M Servo Targ Pls (D) Driver side COOL air mix servo motor target pulse /
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      HOT A/M Servo Targ Pls (P) Passenger side HOT air mix servo motor target pulse /
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      COOL A/M Servo Targ Pls (P) Passenger side COOL air mix servo motor target pulse /
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      A/O Damper FACE Pos (D) Driver side FACE air outlet servo motor target pulse /
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      A/O Damper FOOT/DEF Pos (D) Driver side FOOT/DEF air outlet servo motor target pulse /
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      A/O Damper FACE Pos (P) Passenger side FACE air outlet servo motor target pulse /
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      A/O Damper FOOT/DEF Pos (P) Passenger side FOOT/DEF air outlet servo motor target pulse /
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      M/H Bypass HOT Targ Pis Max hot bypass servo motor HOT target pulse /
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      M/H Bypass COOL Targ Pis Max hot bypass servo motor COOL target pulse /
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      Air Mix Servo Targ Pls (F&R D) Driver side front A/C rear air flow air mix servo motor target pulse /
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      Air Mix Servo Targ Pls (F&R P) Passenger side front A/C rear air flow air mix servo motor target pulse /
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      Air Outlet Servo Pis (F&R D) Driver side front A/C rear air flow air outlet target pulse /
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      Air Outlet Servo Pls (F&R P) Passenger side front A/C rear air flow air outlet target pulse /
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      Air Outlet Servo Pulse (R) Rear air outlet servo motor target pulse (for LH side)/
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      Air Outlet Servo Pulse (RP) Rear air outlet servo motor target pulse (for RH side)/
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      COOL Bypass Target Pulse (P) Passenger side COOL air bypass servo motor target pulse /
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      Emission Target Pulse (R) Rear exhaust mode servo motor target pulse (for emission) /
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      Diffuse Target Pulse (R) Rear exhaust mode servo motor target pulse (for diffusion) /
      Min.: 0, Max.: 255      		 Customized value will be displayed -
      Room Temperature Sensor (RP) Rear room temperature sensor (for RH seat) /
      Min.: -6.5°C (20.3°F)
      Max.: 57.25°C (135.05°F)      		 Actual rear room temperature for RH seat is displayed Open circuit: -6.5°C (20.3°F)
      Short circuit: 57.25°C (135.05°F)
      Set Temperature (Rear D side) Rear driver side set temperature /
      Min.: MAX COLD (0°C (32°F))
      Max.: MAX HOT (30°C (86°F))      		 Rear driver side actual set temperature is displayed -
      Set Temperature (Rear P side) Rear passenger side set temperature /
      Min.: MAX COLD (0°C (32°F))
      Max.: MAX HOT (30°C (86°F))      		 Rear passenger side actual set temperature is displayed -
      Pls Servo Test Sts Pulse servo motor test status/00, 01, 02 Customized value will be displayed -
      Shift Set Temperature Shift set temperature/+2 C, +1 C, NORMAL, -1 C, -2 C Customized value will be displayed -
      Air Inlet Mode Air inlet mode/AUTO, MANUAL Customized value will be displayed -
      Compressor Mode Compressor mode/AUTO, MANUAL Customized value will be displayed -
      Compressor/DEF Mode Compressor/DEF mode/LINK, NORMAL Customized value will be displayed -
      Evaporator Control Evaporator control/AUTO, MANUAL Customized value will be displayed -
      Emission Gas Sensor Shift Emission gas sensor shift/MU MORE, MORE, LI MORE, NORMAL, LI LESS, LESS, MU LESS Customized value will be displayed -
      Button Press Buzzer Button press buzzer/ON, OFF Customized value will be displayed -
      Foot/DEF Auto Mode FOOT/DEF auto mode/ON, OFF Customized value will be displayed -
      Foot/DEF Auto Blow Up FOOT/DEF auto blower up function/ON, OFF Customized value will be displayed -
      Rear A/P HI Set Rear A/P HI Set auto mode/ON, OFF Customized value will be displayed -
      Filter Sensor Filter sensor/ LESS, NORMAL, MORE Customized value will be displayed -
      Ambient Temperature Shift Ambient temperature shift/+3 C, +2 C, +1 C, NORMAL, -1 C, -2 C, -3C Customized value will be displayed -
      Destination Destination/DOMEST, USA, EUROPE, AUSTRAL, MIDEAST, NO INFO Changes value with destinations -
      Number of Trouble Codes Number of trouble codes /
      Min.: 0, Max.: 255      		 Number of DTCs will be displayed -

      Engine 

      ENGINE REFERENCE CHART

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      A/C Signal A/C signal/ON or OFF ON: A/C ON
      OFF: A/C OFF      		 -
  2. ACTIVE TEST 

    HINT:

    Using the Techstream to Perform the Active Tests allows relays, VSVs and 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 engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical/Air Conditioner/Active Test /
    5. According to the display on the Techstream, perform the "Active Test".

    Air Conditioner 

    AIR CONDITIONER REFERENCE CHART

    Tester Display Test Part Control Range Diagnostic Note
    Blower Motor Blower motor Min.: 0, Max.: 31 -
    Magnetic Clutch Relay A/C magnetic clutch relay OFF, ON -
    Defogger Relay (Rear) Defogger relay (Rear) OFF, ON -
    Mirror Heater Relay Mirror heater relay OFF, ON -
    Deicer Relay (Front) Deicer relay (Front) OFF, ON -
    Heater Active Level Heater active level Min.: 0, Max.: 3 -
    Rear A/C Mag Valv Rear A/C magnetic valve OFF, ON -
    Air Inlet Damper Targ Pulse Air inlet damper target pulse Min.: 0, Max.: 255 -
    Cool Air Bypass Pulse Driver side cool air bypass pulse Min.: 0, Max.: 255 -
    Hot A/M Servo Pulse (D) HOT Air mix servo motor pulse (D side) Min.: 0, Max.: 255 -
    Cool A/M Servo Pulse (D) COOL Air mix servo motor pulse (D side) Min.: 0, Max.: 255 -
    Hot A/M Servo Pulse (P) HOT Air mix servo motor pulse (P side) Min.: 0, Max.: 255 -
    Cool A/M Servo Pulse (P) COOL Air mix servo motor pulse (P side) Min.: 0, Max.: 255 -
    Face A/O Servo Pulse (D) FACE Air outlet servo motor pulse (D side) Min.: 0, Max.: 255 -
    Foot A/O Servo Pulse (D) FOOT Air outlet servo motor pulse (D side) Min.: 0, Max.: 255 -
    Face A/O Servo Pulse (P) FACE Air outlet servo motor pulse (P side) Min.: 0, Max.: 255 -
    Foot A/O Servo Pulse (P) FOOT Air outlet servo motor pulse (P side) Min.: 0, Max.: 255 -
    M/H Bypass Hot Servo Pls M/H bypass HOT servo motor pulse Min.: 0, Max.: 255 -
    M/H Bypass Cool Servo Pls M/H bypass COOL servo motor pulse Min.: 0, Max.: 255 -
    A/M Servo Pulse (F&R D) Air mix servo motor pulse (Front A/C rear air flow D side) Min.: 0, Max.: 255 -
    A/M Servo Pulse (F&R P) Air mix servo motor pulse (Front A/C rear air flow P side) Min.: 0, Max.: 255 -
    A/O Servo Pulse (F&R D) Air outlet servo motor pulse (Front A/C rear air flow D side) Min.: 0, Max.: 255 -
    A/O Servo Pulse (F&R P) Air outlet servo motor pulse (Front A/C rear air flow P side) Min.: 0, Max.: 255 -
    A/O Servo Pulse (Rr D) Air outlet servo motor pulse (Rr D side) Min.: 0, Max.: 255 -
    A/O Servo Pulse (Rr P) Air outlet servo motor pulse (Rr P side) Min.: 0, Max.: 255 -
    Cool Air Bypass Pls (P) Cool air bypass pulse (P side) Min.: 0, Max.: 255 -
    Emission Pulse (R) Emission pulse (Rear) Min.: 0, Max.: 255 -
    Diffuse Pulse (R) Diffuse pulse (Rear) Min.: 0, Max.: 255 -
    Rear Blower Motor Rear blower motor Min.: 0, Max.: 31 -
About FixVault