LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2012 >> LS 460L AWD >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Dynamic Radar Cruise Control System (Diagnostics - Introduction) >> Dynamic Radar Cruise Control System >> Data List/Active Test >> Data List/Active Test
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Data List/Active Test

  1. DATA LIST 

    HINT: 

    Using the Techstream 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 Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: All ECUs/(desired system)/Data List.
    5. Check the values by referring to the table below.
      RADAR CRUISE

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Cruise Control Main Switch Cruise control switch signal/ON or OFF ON: Cruise control switch ON
      OFF: Cruise control switch OFF      		 -
      RES/ACC Switch +/RES switch signal/ON or OFF ON: +/RES switch ON
      OFF: +/RES switch OFF      		 -
      SET/COAST Switch -/SET switch signal/ON or OFF ON: -/SET switch ON
      OFF: -/SET switch OFF      		 -
      Constant Speed Mode Constant speed mode signal/ON or OFF ON: Dynamic radar cruise control system is constant speed mode
      OFF: Dynamic radar cruise control system is vehicle-to-vehicle mode      		 -
      Distance Control Switch Distance control switch signal/ON or OFF ON: Distance control switch ON
      OFF: Distance control switch OFF      		 -
      Snow Switch ECT SNOW switch signal/ON or OFF ON: ECT SNOW switch ON
      OFF: ECT SNOW switch OFF      		 -
      Stop Light SW 1 (M CPU) Stop light switch (Main-CPU) signal/ON or OFF ON: Depress brake pedal
      OFF: Release brake pedal      		 -
      Stop Light SW 2 (M CPU) Stop light switch (Main-CPU) signal/ON or OFF ON: Depress brake pedal
      OFF: Release brake pedal      		 -
      Stop Light SW 1 (S CPU) Stop light switch (Sub-CPU) signal/ON or OFF ON: Depress brake pedal
      OFF: Release brake pedal      		 -
      Wiper (Intermittent) Windshield wiper switch INT signal/ON or OFF ON: Windshield wiper switch INT
      OFF: Windshield wiper switch except INT      		 -
      Wiper (Lo) Windshield wiper Lo switch Lo signal/ON or OFF ON: Windshield wiper switch Lo
      OFF: Windshield wiper switch except Lo      		 -
      Wiper (Hi) Windshield wiper Lo switch Hi signal/ON or OFF ON: Windshield wiper switch Hi
      OFF: Windshield wiper switch except Hi      		 -
      Wiper Stop Position Wiper stop position signal/ON or OFF ON: Wiper stop position normally
      OFF: Wiper stop position abnormally      		 -
      Vhcl Spd Calc-Whl Spd Vehicle speed/min.: -327 km/h (-523 mph), max.: 327 km/h (523 mph) Actual vehicle speed stored -
      Vhcl Spd-Brake ECU Vehicle speed/min.: -327 km/h (-523 mph), max.: 327 km/h (523 mph) Actual vehicle speed stored -
      Invalid Whl Spd Sens Num Vehicle speed/min.: 0 km/h (0 mph), max.: 255 km/h (408 mph) Actual vehicle speed stored -
      Cruise Control Cruise control system operation signal/ON or OFF ON: Cruise control system operating
      OFF: Cruise control system not operating      		 -
      CCS Terminate Request Cruise control terminate request signal/ON or OFF ON: Cruise control system not operating
      OFF: Cruise control system operating      		 -
      Cruise Control Mode Cruise control mode signal/All Spd, Hi Spd or Normal All Spd: Vehicle-to-vehicle distance control mode (w/ Full speed Following Function)
      Hi Spd: Vehicle-to-vehicle distance control mode (w/o Full speed Following Function)
      Normal: Constant speed mode      		 -
      Country# (F Radar Sens) Front millimeter wave radar sensor country signal/JPN, NA, EURO, AUS, SAFC, OTHER, TWN, CHINA, THAI, GCC or NOFIX NA -
      Country# (DSS) Driving support ECU country signal/JPN, NA, EURO, AUS, SAFC, OTHER, TWN, CHINA, THAI, GCC or NOFIX NA -
      Frnt Radar Sens Temp Hi Front millimeter wave radar sensor temperature high signal/ON or OFF ON: Front millimeter wave radar sensor temperature high
      OFF: Front millimeter wave radar sensor temperature normal      		 -
      Front Whl Spd LH Sensor Front wheel speed sensor LH signal/Normal or Abnormal Normal: Wheel speed sensor normal
      Abnormal: Wheel speed sensor abnormal      		 -
      Front Whl Spd RH Sensor Front wheel speed sensor RH signal/Normal or Abnormal Normal: Wheel speed sensor normal
      Abnormal: Wheel speed sensor abnormal      		 -
      Rear Whl Spd LH Sensor Rear wheel speed sensor LH signal/Normal or Abnormal Normal: Wheel speed sensor normal
      Abnormal: Wheel speed sensor abnormal      		 -
      Rear Whl Spd RH Sensor Rear wheel speed sensor RH signal/Normal or Abnormal Normal: Wheel speed sensor normal
      Abnormal: Wheel speed sensor abnormal      		 -
      Yaw Rate Sensor Yaw rate value/min.: -100 deg/s, max.: 100 deg/s Min.; -100 deg/s
      Max.: 100 deg/s      		 -
      Steering Angle Steering angle value/min.: -3072 deg, max.: 3070.5 deg Min.: -3072 deg
      Max.: 3070.5 deg      		 -
      Zero Point Angle Sens Zero point value/min.: -3072 deg, max.: 3070.5 deg Min.: -3072 deg
      Max.: 3070.5 deg      		 -
      Deceleration Sensor 1 Deceleration sensor value/min.: -14.7 m/s2 , max.: 14.7 m/s2 Min.: -14.7 m/s2
      Max.: 14.7 m/s2      		 -
      Deceleration Sensor 2 Deceleration sensor value/min.: -14.7 m/s2 , max.: 14.7 m/s2 Min.: -14.7 m/s2
      Max.: 14.7 m/s2      		 -
      Zero Deceleration Sensor 1 Zero point deceleration sensor value/min.: -4.5952 m/s2 max.: 4.5593 m/s2 Min.: -4.5952 m/s2
      Max.: 4.5593 m/s2      		 -
      Zero Deceleration Sensor 2 Zero point deceleration sensor value/min.: -4.5952 m/s2 max.: 4.5593 m/s2 Min.: -4.5952 m/s2
      Max.: 4.5593 m/s2      		 -
      Brake Control Brake control signal/ON or OFF ON: Depress brake pedal
      OFF: Release brake pedal      		 -
      Vehicle Stop Vehicle stop signal/ON or OFF ON: Vehicle stop
      OFF: Vehicle running      		 -
      Vehicle Acceleration Vehicle acceleration/min.: -5 m/s2 , max.: 5 m/s2 Actual vehicle acceleration -
      Whl Spd/Deceleration Sen Wheel speed sensor/deceleration sensor signal/Avail or Not Avl Avail: Wheel speed sensor/deceleration sensor valid
      Not avl: Wheel speed sensor/deceleration sensor not valid      		 -
      CCS Throttle Opn Angle Cruise control throttle body open angle/min.: 0%, max.: 100% Actual throttle open angle -
      CCS Mem Vehicle Spd Cruise control memory vehicle speed/min.: 0 km/h (0 mph), max.: 320 km/h (200 mph) Actual vehicle speed stored in memory -
      Vehicle Distance Vehicle distance/min.: 0 m, max.: 255 m Actual vehicle distance -
      CCS Main SW-Ready Dynamic radar cruise control system standby condition/ON or OFF ON: Switch ready is SET
      OFF: Switch ready is UNSET      		 -
      Low Speed Cancel Buzzer Low speed cancel buzzer operation signal/ON or OFF ON: Low speed cancel buzzer operating
      OFF: Low speed cancel buzzer not operating      		 -
      CCS System Check Multi-information display of combination meter "Cruise Control System Check" display signal/ON or OFF ON: When displayed
      OFF: When not displayed      		 -
      Radar Front millimeter wave radar sensor signal/Stop or Emission Stop: Front millimeter wave radar sensor signal stopped
      Emission: Front millimeter wave radar sensor signal sent      		 -
      # Codes Number of present trouble codes/min.: 0, max.: 255 Number of DTCs will be displayed -
      STEERING PAD SWITCH

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      ACC SW Steering pad switch with modulator (distance control switch) signal/ON or OFF ON: Steering pad switch with modulator (distance control switch) is ON
      OFF: Steering pad switch with modulator (distance control switch) is OFF      		 -
  2. ACTIVE TEST 

    HINT: 

    Using the Techstream to perform Active Tests allows relays, VSVs, actuators and 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 display 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/(desired system)/Active Test / All.
    5. Perform the Active Test by referring to the table below.
      COMBINATION METER

      Tester Display Test Part Control Range Diagnostic Note
      Indicat. Lamp Cruise CRUISE main indicator light ON/OFF -
      ABS/VSC/TRAC

      Tester Display Test Part Control Range Diagnostic Note
      Buzzer Skid control buzzer sounds ON/OFF -
scientia non olet · About LEMON Manuals