Lexus IS250 · Service Manual HEATER & AIR CONDITIONING SYSTEM

DATA LIST / ACTIVE TEST

System information


DATA LIST

HINT:
Using the intelligent tester's Data List allows switch, sensor, actuator, and other item values to be read without removing any parts. Reading the Data List early in troubleshooting is one way to save time.

  1. Connect the intelligent tester to the DLC3.

  2. Turn the engine switch on (IG).

  3. Turn the tester on.

  4. Enter the following menus: Body / Air Conditioner / Data List.

  5. Check the value(s) by referring to the table below.

    Air Conditioner: 
    Item
    		 Measurement Item / Display (Range)
    		 Normal Condition
    		 Diagnostic Note
    Room Temperature Sensor
    (Room Temp)
    		 Room temperature sensor / Min.: -6.5°C (20.3°F), Max.: 57.25°C (135.05°F)
    		 Actual cabin temperature is displayed
    		 -
    Ambient Temp Sensor
    (Ambi Temp Sens)
    		 Ambient temperature sensor / Min.: -23.3°C (-9.94°F), Max.: 65.95°C (150.71°F)
    		 Actual ambient temperature is displayed
    		 -
    Evaporator Temp Sensor
    (Evap Temp)
    		 Evaporator temperature sensor / Min.: -29.7°C (-21.46°F), Max.: 59.55°C (139.19°F)
    		 Actual evaporator temperature is displayed
    		 -
    Solar Sensor (D side)
    (Solar Sens-D)
    		 Driver side solar sensor / Min.: 0, Max.: 255
    		 Driver side temperature increases as brightness increases
    		 -
    Solar Sensor (P side)
    (Solar Sens-P)
    		 Passenger side solar sensor / Min.: 0, Max.: 255
    		 Passenger side temperature increases as brightness increases
    		 -
    Engine Coolant Temp
    (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
    		 -
    Set Temperature (D - side)
    (Set Temp-D)
    		 Driver side set temperature / Min.: 0, Max.: 255
    		 Driver side set temperature is displayed
    		 -
    Set Temperature (P - side)
    (Set Temp-P)
    		 Passenger side set temperature / Min.: 0, Max.: 255
    		 Passenger side set temperature is displayed
    		 -
    Estimated Temp (D side)
    (Estimate Temp-D)
    		 Driver side estimated temperature / Min.: -358.4°C (-613.12°F), Max.: 358.4°C (677.12°F)
    		 Driver side estimated temperature is displayed
    		 -
    Estimated Temp (P side)
    (Estimate Temp-P)
    		 Passenger side estimated temperature / Min.: -358.4°C (-613.12°F), Max.: 358.4°C (677.12°F)
    		 Passenger side estimated temperature is displayed
    		 -
    Hand Free Telephone
    (Hand free tel)
    		 Hands free telephone / OFF or ON
    		 -
    		 -
    Blower Motor Speed Level
    (Blower Level)
    		 Blower motor speed level / Min.: 0 level, Max.: 31 level
    		 Increases in the range between 0 and 31 as the blower motor speed increases
    		 -
    Adjusted Ambient Temp
    (Ambi Temp)
    		 Adjusted ambient temperature / Min.: -30.8°C (-23.44°F), Max.: 50.8°C (123.44°F)
    		 -
    		 -
    Emission Gas Sensor
    (Emiss Gas Sens)
    		 Emission gas / Min.: 0 V, Max.: 255 V
    		 Smog ventilation sensor value increases as gas amount increases
    		 -
    Shift Set Temperature
    (Set Temp Shift)
    		 Shift set temperature / +2 C, +1 C, NORMAL, -1 C, -2 C
    		 Customized value will be displayed
    		 -
    Air Inlet Mode
    (Air Inlet Mode)
    		 Air inlet mode / AUTO, MANUAL
    		 Customized value will be displayed
    		 -
    Compressor Mode
    (Compressor Mode)
    		 Compressor mode / AUTO, MANUAL
    		 Customized value will be displayed
    		 -
    Compressor / DEF Mode
    (Comp / DEF Oper)
    		 Compressor / DEF mode / LINK, NORMAL
    		 Customized value will be displayed
    		 -
    Evaporator Control
    (Evap Ctrl)
    		 Evaporator control / AUTO, MANUAL
    		 Customized value will be displayed
    		 -
    Emission Gas Sensor Shift
    (Gas Sens 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 Prs Buz)
    		 Button press buzzer / ON, OFF
    		 Customized value will be displayed
    		 -
    Foot Air Leak
    (Foot Air Leak)
    		 Foot air leak / ON, OFF
    		 Customized value will be displayed
    		 -
    Foot / DEF Auto Blower Up
    (Auto Blow Up)
    		 Foot / DEF auto blower up function / ON, OFF
    		 Customized value will be displayed
    		 -
    Foot /DEF Auto Mode
    (Foot /DEF Mode)
    		 Foot / DEF auto mode / ON, OFF
    		 Customized value will be displayed
    		 -
    Ambient Temperature Shift
    (Ambient Tmp Sft)
    		 Ambient temperature shift / +3 C, +2 C, +1 C, NORMAL, -1 C, -2 C, -3 C
    		 Customized value will be displayed
    		 -
    Destination
    (Destination)
    		 Destination / DOMEST, USA, EUROPE, AUSTRAL, MIDEAST, NO INFO
    		 Value changes with destinations
    		 -
    Emission Gas Nox Sensor
    (Nox Gas Sens)
    		 Emission gas / Min.: 0, Max.: 255
    		 Smog ventilation sensor value increases as gas amount increases
    		 -
    Regulator Pressure Sensor
    (Reg Press Sens)
    		 Regulator pressure sensor / Min.: 0, Max.: 255
    		 Actual regulator pressure is displayed
    		 -
    Regulator Control Current
    (Reg Ctrl Current)
    		 Regulator control current / Min.: 0 A, Max.: 255 A
    		 -
    		 -
    Air Mix Servo Targ Pulse (D)
    (Air Mix Pulse-D)
    		 Driver side air mix servo motor target pulse / Min.: 0, Max.: 255
    		 MAX. COLD: 5 (pulse)
    MAX. HOT: 104 (Pulse)
    		 -
    Air Mix Servo Targ Pulse (P)
    (Air Mix Pulse-P)
    		 Passenger side air mix servo motor target pulse / Min.: 0, Max.: 255
    		 MAX. COLD: 105 (pulse)
    MAX. HOT: 6 (pulse)
    		 -
    Air Outlet Servo Pulse (D)
    (Air Out Pulse-D)
    		 Driver side air outlet servo motor target pulse / Min.: 0, Max.: 255
    		 FACE: 9 to 17 (pulse)
    B/L: 32 to 38 (pulse)
    FOOT: 56 to 70 (pulse)
    FOOT/DEF: 84 (pulse)
    DEF: 97 (pulse)
    		 -
    Air Inlet Damper Targ Pulse
    (A/I Damp Pls)
    		 Air inlet damper target pulse / Min.: 0, Max.: 255
    		 LHD:
    RECIRCULATION: 31 (pulse)
    FRESH: 7 (pulse)
    RHD:
    RECIRCULATION: 7
    FRESH: 27
    		 -
    Cool Air Bypass pulse
    (A/B Damp Pls)
    		 Driver side cool air bypass pulse / Min.: 0, Max.: 255
    		 CLOSE: 50 (pulse)
    Open: 8 (pulse)
    		 -
    Number of Trouble Codes
    (#Codes)
    		 Number of trouble codes / Min.: 0, Max.: 255
    		 Number of DTCs will be displayed
    		 -
    Engine: 
    Item
    		 Measurement Item / (Range) Display
    		 Normal Condition
    		 Diagnostic Note
    A/C Signal
    (A/C Signal)
    		 A/C signal / ON or OFF
    		 ON: A/C ON
    OFF: A/C OFF
    		 -
    A/C Magnetic Clutch Relay
    (A/C Magnetic Clutch Relay)
    		 A/C magnetic clutch relay / OFF, ON
    		 ON: A/C magnetic clutch ON
    OFF: A/C magnetic clutch OFF
    		 -


ACTIVE TEST

HINT:
Performing the intelligent tester's Active Test allows relays, VSVs, actuators and other items to be operated without removing any parts. Performing the Active Test early in troubleshooting is one way to save time. The Data List can be displayed in the Active Test.

  1. Connect the intelligent tester to the DLC3.

  2. Turn the engine switch on (IG).

  3. Turn the tester on.

  4. Enter the following menus: Body / Air Conditioner / Active Test.

  5. Perform the Active Test by referring to the table below.

    Air Conditioner: 
    Item
    		 Test Details / Display (Range)
    		 Diagnostic Note
    Blower Motor
    (Blower Motor)
    		 Blower motor / Min.: Level 0, Max.: Level 31
    		 -
    Magnetic Clutch Relay
    (A/C Mag Clutch)
    		 Magnetic clutch relay / OFF, ON
    		 -
    Defogger Relay (Rear)
    (Defogger Rly-R)
    		 Defogger relay (Rear) / OFF, ON
    		 -
    Mirror Heater Relay
    (Mir heater)
    		 Mirror heater relay /OFF, ON
    		 -
    Electric Heater 1
    (Heater 1)
    		 Electric Heater 1 / OFF, ON
    		 -
    Electric Heater 2
    (Heater 2)
    		 Electric Heater 2 / OFF, ON
    		 -
    Air Mix Servo Targ Pulse (D)
    (Air Mix Pulse-D)
    		 Driver side air mix servo motor pulse / Min.: 0, Max.: 255
    		 -
    Air Mix Servo Targ Pulse (P)
    (Air Mix Pulse -P)
    		 Passenger side air mix servo motor pulse / Min.: 0, Max.: 255
    		 -
    Air Outlet Servo Pulse (D)
    (Air Out Pulse- D)
    		 Driver side air outlet servo motor pulse / Min.: 0, Max.: 255
    		 -
    Air Inlet Damper Targ pulse
    (A/I Damp Targ Pls)
    		 Air inlet damper target pulse / Min.: 0, Max.: 255
    		 -
    Cool Air Bypass pulse
    (A/B Damp Pls)
    		 Cool air bypass pulse / Min.: 0, Max.: 255
    		 -
    Engine: 
    Item
    		 Test Details / Display (Range)
    		 Diagnostic Note
    Magnetic Clutch Relay
    (A/C Mag clutch)
    		 Magnetic clutch relay / OFF, ON
    		 -

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