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Home >> Lexus >> 2019 >> IS 350 Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 167 (Lighting System (Ext) - Diagnostics - Introduction (2 Of 2)) >> Lighting System >> Data List / Active Test [04/2013 - 10/2016] >> Data List / Active Test [04/2013 - 10/2016]

Data List / Active Test [04/2013 - 10/2016]

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  1. DATA LIST 

    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.

    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. 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 / (desired system) / 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
      Parking Brake SW Parking brake switch signal ON or OFF ON: Parking brake switch on
      OFF: Parking brake switch off
      -
      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
      -
      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
      *1
      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 in neither tail nor head position
      -
      Light Sensor Illuminance Light control sensor illuminance 0 to 8191 lx Value is output according to ambient light level -
      Sensitivity Sensitivity of the automatic light control system Light2, Light1, Normal, Dark1 or Dark2 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 -
      1. *1: w/ Front Fog Light

      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
      -
  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, Mirror L or Mirror R / 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 -
      Side Mirror Foot Light Door mirror foot lights ON/OFF *1
      Taillight Relay Taillight relay ON/OFF -
      Headlight Relay Headlight relay (Low beam headlights) ON/OFF -
      Head Light Hi Dimmer relay (High beam headlights) ON/OFF -
      Front Fog Light Relay Front fog light relay ON/OFF Light control switch in tail position
      *2
      1. *1: for Power Mirror Control System (w/o Memory)
      2. *2: w/ Front Fog Light

      Body Electrical > Mirror L > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Foot Light Door mirror foot light LH ON/OFF *3

      Body Electrical > Mirror R > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Foot Light Door mirror foot light RH ON/OFF *3
      1. *3: for Power Mirror Control System (w/ Memory)