LANE-KEEPING ASSIST SYSTEM DATA LIST / ACTIVE TEST


  1. DATA LIST

    Tech Tips

    Using the GTS to read the Data List allows 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 GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: All ECUs / (desired menu) / Data List.

    5. According to the display on the GTS, read the Data List.

      Lane Keep Assist
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      LKA Main SW Lane-keeping assist main switch signal / ON or OFF

      ON: Lane-keeping assist main switch on

      OFF: Lane-keeping assist main switch off

      		 -
      Turn Light RH Turn signal light switch signal / ON or OFF

      ON: Turn signal light switch right

      OFF: Turn signal light switch off

      		 -
      Turn Light LH Turn signal light switch signal / ON or OFF

      ON: Turn signal light switch left

      OFF: Turn signal light switch off

      		 -
      Head Light Headlight dimmer switch signal / ON or OFF

      ON: Headlight dimmer switch HEAD

      OFF: Headlight dimmer switch off

      		 -
      Head Light (High Beam) Headlight dimmer switch signal / ON or OFF

      ON: Headlight dimmer switch HIGH BEAM

      OFF: Headlight dimmer switch off

      		 -
      LKA Temporarily Disabled Lane-keeping assist temporarily disabled signal / ON or OFF

      ON: Lane-keeping assist system temporarily disabled

      OFF: Lane-keeping assist system operable

      		 -
      Small Steering Force Demand Small steering force demand signal / ON or OFF

      ON: Steering assist function operates

      OFF: Steering assist function does not operate

      		 -
      Lane-Keeping Assist Demand Lane-keeping assist demand signal / ON or OFF

      ON: Lane-keeping assist function operates

      OFF: Lane-keeping assist function does not operate

      		 -
      Skid Control Buzzer Demand Skid control buzzer demand signal / ON or OFF

      ON: Skid control buzzer sounds

      OFF: Skid control buzzer does not sound

      		 -
      Left Lane Indicator Left lane recognition signal / Nothing, Heavy, Closing or H blink

      Nothing: Left lane indicator is not shown

      Heavy: Left lane indicator is fully shown

      Closing: Only left lane indicator outline is shown

      H blink: Left lane indicator is blinking

      		 -
      Right Lane Indicator Right lane recognition signal / Nothing, Heavy, Closing or H blink

      Nothing: Right lane indicator is not shown

      Heavy: Right lane indicator is fully shown

      Closing: Only right lane indicator outline is shown

      H blink: Right lane indicator is blinking

      		 -
      Steering Indicator Meter display signal of lane-keeping assist function / Nothing, Light or Blink

      Nothing: Steering wheel assistance is not displayed

      Light: Steering wheel assistance is displayed

      Blink: Steering wheel assistance is blinking

      		 -
      Lane Detection Impossible Buz Lane-keeping detection impossible buzzer signal / ON or OFF

      ON: Lane-keeping detection impossible buzzer sounds

      OFF: Lane-keeping detection impossible buzzer does not sound

      		 -
      LKA Indicator LKA indicator light signal / ON or OFF

      ON: LKA indicator light on

      OFF: LKA indicator light off

      		 -
      Ready Indicator Ready indicator light signal / ON or OFF

      ON: Ready indicator on

      OFF: Ready indicator off

      		 -
      Left Lane Type Left lane type signal / Dashed or Solid

      Dashed: Left lane dashed

      Solid: Left lane solid

      		 -
      Right Lane Type Right lane type signal / Dashed or Solid

      Dashed: Right lane dashed

      Solid: Right lane solid

      		 -
      Lane Undetectable Lane undetectable signal / Undetectable or Detect

      Undetectable: Lane undetectable

      Detect: Lane detected

      		 -
      Left Lane Detection Left lane detection signal / Undetectable or Detect

      Undetectable: Left lane undetectable

      Detect: Left lane detected

      		 -
      Right Lane Detection Right lane detection signal / Undetectable or Detect

      Undetectable: Right lane undetectable

      Detect: Right lane detected

      		 -
      Left Lane Change Left lane change signal / ON or OFF

      ON: When left lane change is performed

      OFF: When left lane change is not performed

      		 -
      Right Lane Change Right lane change signal / ON or OFF

      ON: When right lane change is performed

      OFF: When right lane change is not performed

      		 -
      Wiper Information Wiper information signal / Unoperat, Oil off, Mist, Washer, Intermi, Lo, Hi or Unknown

      Unoperat: Windshield wiper switch off

      Oil off: Oil filter clearing operation

      Mist: Windshield wiper switch MIST

      Washer: Windshield wiper switch WASHER

      Intermi: Windshield wiper switch INT

      Lo: Windshield wiper switch Lo

      Hi: Windshield wiper switch Hi

      Unknown: Wiper information signal unknown

      		 -
      Lane Position Lane position / Min.: -327.68 m, Max.: 327.67 m Actual lane position -
      Lane Width Lane width / Min.: 0 m, Max.: 655.35 m Actual lane width -
      EPS Trq Sens Output Electrical power steering torque sensor output / Min.: -7 N/m, Max.: 7 N/m Actual steering torque sensor output -
      The Number of DTCs Number of DTCs / Min.: 0, Max.: 255 Number of DTCs -
      Pre-Crash 2
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Country# (DSS) Destination country for driving support ECU / JPN, NA, EURO, AUS, SAFC, OTHER, TWN, CHINA, THAI, GCC, NOFIX Actual country code -
      Country# (Obj Recog ECU) Lane recognition camera sensor country signal / JPN, NA, EURO, AUS, SAFC, OTHER, TWN, CHINA, THAI, GCC, NOFIX Actual country code -

  2. ACTIVE TEST

    Tech Tips

    Using the GTS 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 GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: All ECUs / (desired menu) / Active Test.

    5. According to the display on the GTS, perform the Active Test.

      Combination Meter
      Tester Display Test Part Control Range Diagnostic Note
      Drift From The Lane LKA indicator light ON/OFF -
      ABS/VSC/TRC
      Tester Display Test Part Control Range Diagnosis Note
      DSS Signal Buzzer Skid control buzzer ON/OFF The buzzer can be heard.