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Home >> Lexus >> 2017 >> RX 450h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Exterior Lights >> Lighting System (W/O Automatic Headlight Beam Level Control System) (Diagnostics - Introduction) >> LIGHTING SYSTEM (w/o Automatic Headlight Beam Level Control System) >> Data List / Active Test [12/2017 - 08/2019] >> Data List / Active Test [12/2017 - 08/2019]

Data List / Active Test [12/2017 - 08/2019]

  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 Main Body: Body Electrical / Main Body / Data List.
      2. for Combination Meter: Body Electrical / Combination Meter / Data List.
    5. Read the Data List according to the display on the Techstream.

      Body Electrical > Main Body > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Dimmer SW Dimmer switch high position signal OFF or ON OFF: Dimmer switch in low position
      ON: Dimmer switch in high or high flash position      		 -
      Passing Light SW Dimmer switch high flash position (pass) signal OFF or ON OFF: Dimmer switch not in high flash position
      ON: Dimmer switch in high flash position      		 -
      Rear Fog Light SW Fog light switch rear position signal OFF or ON OFF: Fog light switch off
      ON: Fog light switch in rear position      		 Although this item is displayed on the Techstream, it is not applicable to this vehicle.
      Front Fog Light SW Fog light switch front position signal OFF or ON OFF: Fog light switch off
      ON: Fog light switch in front position      		 -
      Auto Light SW Light control switch AUTO position signal OFF or ON OFF: Light control switch not in AUTO position
      ON: Light control switch in AUTO position      		 -
      Head Light SW (Head) Light control switch head position signal OFF or ON OFF: Light control switch not in head position
      ON: Light control switch in head position      		 -
      Head Light SW (Tail) Light control switch tail position signal OFF or ON OFF: Light control switch not in tail or head position
      ON: Light control switch in tail or head position      		 -
      Insolation Amount of Solar Sensor RH Solar sensor RH condition 0 to 51100 or SensorFail Condition can be displayed -
      Insolation Amount of Solar Sensor LH Solar sensor LH condition 0 to 51100 or SensorFail Condition can be displayed -
      Light Sensor Illuminance Light control sensor illuminance 0 to 8191 lx or SensorFail Value is output according to ambient light level -
      AUTO Light Status Auto light control operation status Not AUTO or AUTO Not AUTO: Automatic light control not operating
      AUTO: Automatic light control operating      		 -
      Light Sensor Connection Status Light control sensor connection status OFF or ON OFF: Automatic light control sensor has not been connected
      ON: Automatic light control sensor connected or has been connected      		 -
      Mirr-Foot-Lgt Approached/Exterior Light Approached Outside handle foot light controlled by actuation area-linked function OFF or ON Customize setting displayed -
      Mirr-Foot-Lgt Unlocked/Exterior Light Unlocked Outside handle foot light controlled by door unlock-linked function OFF or ON Customize setting displayed -
      Exterior Light (Door Open) Door open control function of the outside handle foot light control OFF or ON Customize setting displayed -
      Mirror Foot Light Time/Exterior Light Time Outside handle foot light lighting time 7.5 s, 15 s, 30 s or 0 s Customize setting displayed -
      Exterior Light Control Setting of the outside handle foot light control on/off OFF or ON Customize setting displayed -
      Headlight Lighting Function ECU which controls the lighting system Main Body or Lighting Sys ECU Main Body: Lighting system controlled by main body ECU (multiplex network body ECU)
      Lighting Sys ECU: Lighting system is controlled by headlight ECU sub-assembly      		 -
      Sensitivity Sensitivity of the automatic light control system Light2, Light1, Normal, Dark1 or Dark2 Customize setting displayed -
      DRL Function Setting of the DRL function on/off OFF or ON Customize setting displayed for vehicles with customize setting "DRL Function"
      Headlight in Conjunction with Wiper Wiper-linked low beam headlight control OFF or ON Customize setting displayed -
      Disp Ex ON Sen Ambient brightness level required to dim display lights (combination meter, navigation display, etc.) Light2, Light1, Normal, Dark1 or Dark2 Customize setting displayed -
      Disp Ex OFF Sen Ambient brightness level required to cancel dimming display lights (combination meter, navigation display, etc.) Light2, Light1, Normal, Dark1 or Dark2 Customize setting displayed -
      Light Auto OFF Delay Light auto OFF delay Off, 30 s, 60 s, or 90 s Customize setting displayed -
      2 Steps Fade Out Control Function Setting of the 2 steps fade out control function on/off OFF or ON Customize setting displayed -
      Light up Clearance Lights at Door Unlock Function Setting of the light up parking lights at door unlock function on/off OFF or ON Customize setting displayed -
      The Number of DTC Number of trouble codes 0 to 255 Number of stored DTCs displayed -

      Body Electrical > Combination Meter > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Turn Signal Switch (Right) Turn signal switch (right) signal OFF or ON OFF: Turn signal switch (right) off
      ON: Turn signal switch (right) on      		 -
      Turn Signal Switch (Left) Turn signal switch (left) signal OFF or ON OFF: Turn signal switch (left) off
      ON: Turn signal switch (left) on      		 -
      Hazard Flasher Switch Hazard warning signal switch signal OFF or ON OFF: Hazard warning signal switch off
      ON: Hazard warning signal switch on      		 -
      Turn Switch Signal (Full Turn) Turn signal switch (full turn) signal OFF or ON OFF: Turn signal switch (left and right) off
      ON: Turn signal switch (left or right) on      		 -
      Lane Change Flashing Times Setting Condition of the lane change flashing times OFF, 3, 4, 5, 6 or 7 Customize setting 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: Body Electrical / Main Body / Active Test.
    5. Perform the Active Test according to the display on the Techstream.

      Body Electrical > Main Body > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Daytime Running Light Daytime running lights OFF or ON -
      Exterior Light Outside handle foot lights OFF or ON -
      Taillight Relay Taillight relay OFF or ON -
      Headlight Relay Low beam headlights OFF or ON -
      Head Light Hi High beam headlights OFF or ON -
      Front Fog Light Relay Front fog lights OFF or ON Light control switch in tail position
      Rear Fog Light Relay Rear fog lights OFF or ON Although this item is displayed on the Techstream, it is not applicable to this vehicle.
      Dimmer Signal Dimmer signal OFF or ON State where circumference illumination is bright
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