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Home >> Lexus >> 2017 >> RX 350 Base, AWD >> 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 [09/2015 - 12/2017] >> Data List / Active Test [09/2015 - 12/2017]
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Data List / Active Test [09/2015 - 12/2017]

  1. DATA LIST 
    NOTE:

    In the chart 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 engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Main Body or 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 ON or OFF ON: Dimmer switch in high or high flash position
      OFF: Dimmer switch in low position      		 -
      Passing Light SW Dimmer switch high flash position (pass) signal ON or OFF ON: Dimmer switch in high flash position
      OFF: Dimmer switch not in high flash position      		 -
      Rear Fog Light SW Fog light switch rear position signal ON or OFF ON: Fog light switch in rear position
      OFF: Fog light switch off      		 *1
      Front Fog Light SW Fog light switch front position signal ON or OFF ON: Fog light switch in front position
      OFF: Fog light switch off      		 -
      Auto Light SW Light control switch AUTO position signal ON or OFF ON: Light control switch in AUTO position
      OFF: Light control switch not in AUTO position      		 -
      Head Light SW (Head) Light control switch head position signal ON or OFF ON: Light control switch in head position
      OFF: Light control switch not in head position      		 -
      Head Light SW (Tail) Light control switch tail position signal ON or OFF ON: Light control switch in tail or head position
      OFF: Light control switch not in tail or head position      		 -
      Light Sensor Illuminance Light control sensor illuminance 0 to 8191 lx Value is output according to ambient light level -
      Mirr-Foot-Lgt Approached/Exterior Light Approached Outside handle foot light controlled by actuation area-linked function ON or OFF Customize setting displayed -
      Mirr-Foot-Lgt Unlocked/Exterior Light Unlocked Outside handle foot light controlled by door unlock-linked function ON or OFF Customize setting displayed -
      Exterior Light (Door Open) Door open control function of the outside handle foot light control ON or OFF 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 ON or OFF 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 ON or OFF Customize setting displayed *2
      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 ON or OFF Customize setting displayed -
      Light up Clearance Lights at Door Unlock Function Setting of the light up parking lights at door unlock function on/off ON or OFF Customize setting displayed -
      The Number of DTC Number of trouble codes 0 to 255 Number of stored DTCs displayed -
      1. *1: Although the item is displayed on the Techstream, it is not applicable to this vehicle.
      2. *2: Vehicles displaying the Item "DRL Function" on the Techstream

      Body Electrical > Combination Meter > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Turn Signal Switch (Right) Turn signal switch (right) signal ON or OFF ON: Turn signal switch (right) on
      OFF: Turn signal switch (right) off      		 -
      Turn Signal Switch (Left) Turn signal switch (left) signal ON or OFF ON: Turn signal switch (left) on
      OFF: Turn signal switch (left) off      		 -
      Hazard Flasher Switch Hazard warning signal switch signal ON or OFF ON: Hazard warning signal switch on
      OFF: Hazard warning signal switch off      		 -
      Turn Switch Signal (Full Turn) Turn signal switch (full turn) signal ON or OFF ON: Turn signal switch (left or right) on
      OFF: Turn signal switch (left and right) off      		 -
      Lane Change Flashing Times Setting Condition of the lane change flashing times OFF, 3, 5 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 engine 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 ON/OFF -
      Exterior Light Outside handle foot lights ON/OFF -
      Taillight Relay Taillight relay ON/OFF -
      Headlight Relay Low beam headlights ON/OFF -
      Head Light Hi High beam headlights ON/OFF -
      Front Fog Light Relay Front fog lights ON/OFF Light control switch in tail position
      Rear Fog Light Relay Rear fog lights ON/OFF *
      1. *: Although the item is displayed on the Techstream, it is not applicable to this vehicle.
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