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Home >> Lexus >> 2010 >> LS 460 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 97 (Dynamic Radar Cruise Control (Diagnostics - Introduction)) >> Dynamic Radar Cruise Control System >> Data List / Active Test >> Data List / Active Test
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Data List / Active Test

WARNING: This page is about a different car, the 2010 Lexus GS 450h. However, it is still accessible from the selected car via links, so may be relevant.
  1. READ 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.

    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Radar Cruise / Data List.
    5. Read the Data List according to the display on the Techstream.
      RADAR CRUISE (HYBRID VEHICLE CONTROL ECU):

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Accel Request Accelerator request signal / min.: -2,621.44 k/h/s, max.: 2,621.36 k/h/s No vehicle in front -
      Vehicle Distance Millimeter wave radar sensor / min.: 0 m (0 ft), max.: 255 m (836.65 ft) Distance to vehicle in front -
      L/C Option Flag Dynamic radar cruise option flag / No or Yes Yes: Dynamic radar cruise control system can be used
      No: Dynamic radar cruise control system cannot be used
      -
      Car Dist Time Setting Vehicle distance time setting condition / Shrt, Mid, Long, No Vehicle-to-vehicle distance selected by steering pad switch (distance control switch) -
      O/D Cut Request O/D cut request / Not Request or Request Not Request: Idling -
      Shift Down Rqst to 3rd Shift down request to 3rd gear / Not Request or Request Not Request: Idling -
      Shift Down Rqst to 4th Shift down request to 4th gear / Not Request or Request Not Request: Idling -
      Alarm Request Alarm request signal / Not Request or Request Request: When beeping
      Not Request: When not beeping
      -
      All Throttle Close Rqst All throttle close request / Not Request or Request ON: Request
      OFF: Not Request
      -
      Brake Control Request Brake control request / Not Request or Request ON: Request
      OFF: Not Request
      -
      Targ Decl Slope Cruise target deceleration slope / 0, 1, 2, 3 0, 1, 2, 3 -
      CCS Vehicle Spd Vehicle speed sensor / min.: 0 km/h (0 mph), max.: 255 km/h (158 mph) Actual vehicle speed -
      CCS Mem Vehicle Spd Cruise control memorized speed / min.: 0 km/h (0 mph), max.: 255 km/h (158 mph) Memorized speed: Cruise control activated -
      Throttle Opening Angle Required throttle opening angle / min.: 0°, max.:125° Actual required throttle opening -
      Cruise Control Cruise control system active condition / ON or OFF ON: Cruise control activated
      OFF: Cruise control deactivated
      -
      Main SW M-CPU Main switch signal (Main CPU) / ON or OFF ON: Main switch on
      OFF: Main switch off
      3
      CCS Ready M-CPU Cruise control system standby condition (Main CPU) / ON or OFF Each time main switch is pushed, ON/OFF changes 1
      CCS Indicator M-CPU Cruise indicator signal (Main CPU) / ON or OFF ON: "CRUISE" on
      OFF: "CRUISE" off
      2
      CCS Indicator S-CPU Cruise indicator signal (Sub CPU) / ON or OFF ON: "CRUISE" on
      OFF: "CRUISE" off
      2
      Cancel Switch CANCEL switch signal / ON or OFF ON: CANCEL switch on
      OFF: CANCEL switch off
      -
      SET/COAST Switch SET/COAST switch signal / ON or OFF ON: - (COAST)/SET switch on
      OFF: - (COAST)/SET switch off
      -
      RES/ACC Switch RES/ACC switch signal / ON or OFF ON: + (ACCEL)/RES (RESUME) switch on
      OFF: + (ACCEL)/RES (RESUME) switch off
      -
      Stop Light SW M-CPU Stop light switch signal (Main CPU) / ON or OFF ON: Brake pedal depressed
      OFF: Brake pedal released
      -
      Cruise Operation Status Cruise control condition / ON or OFF ON: Cruise control operated
      OFF: Cruise control operation stopped
      -
      VSC Fail Safe Flag VSC fail-safe flag / ON or OFF ON: Vehicle stability control system fail-safe flag on
      OFF: Vehicle stability control system fail-safe flag off
      -
      Vehicle Spd Change Vehicle speed sudden change / ON or OFF ON: Sudden change in vehicle speed
      OFF: No change in vehicle speed
      -
      # Codes Number of DTC recorded / 0 to 255 Number of DTCs will be displayed -

      HINT: 

      • 1 is OK, but 2 is NG → Hybrid vehicle control ECU failure
      • 2 is OK, but 3 is NG → DTC output or hybrid vehicle control ECU failure
      • 1 is OK, but cruise main indicator light does not illuminate → Cruise main indicator light, wire harness, or hybrid vehicle control ECU failure
  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 / Combination Meter / Active Test.
    5. Perform Active Test according to the display on the Techstream.

      HINT: 

      The power switch must be turned on to proceed with the Active Test using the Techstream.

      COMBINATION METER

      Tester Display Test Part Control Range Control Range
      Indicat. Lamp Cruise Cruise main indicator light BLINK / OFF -