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Data List / Active Test [10/2015 - 12/2017]

WARNING: This page is about a different car, the 2017 Lexus RX 450h and 2016 Lexus RX 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 / Cruise Control / Data List.
    5. Read the Data List according to the display on the Techstream.

      HINT: 

      • If any DTCs are output, the value for a measurement item may be incorrect.
      • If any DTCs are output, perform troubleshooting accordingly. After repair, confirm relevant values using the Data List.

      Powertrain > Cruise Control > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Cruise Vehicle Speed Vehicle speed Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph) Actual vehicle speed -
      Cruise Memory Vehicle Speed Stored vehicle speed Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph) Stored vehicle speed -
      Cruise Request Throttle Opening Angle Cruise requested position 0 to 124.99° When cruise is set (vehicle in motion at 80 km/h (50 mph)): Actual requested throttle position -
      Vehicle Acceleration Acceleration condition while driving the vehicle -13.1 to 13.1 m/s2 Current value displayed -
      Cruise Target Acceleration Target acceleration while in cruise control mode -13.1 to 13.1 m/s2 Current value displayed -
      Driving Support ECU Target Acceleration Target acceleration of driving support ECU -13.1 to 13.1 m/s2 - This item is displayed on the Techstream but is not used.
      Acceleration Continuation Decision Acceleration continuation decision condition ON or OFF - This item is displayed on the Techstream but is not used.
      Output Driving Force Generated drive torque -10.0 to 9.92 kN - This item is displayed on the Techstream but is not used.
      Cruise Request Driving Force Cruise request torque signal -10.0 to 9.92 kN Differs according to the cruise control system condition -
      Cruise Request Driving Force Feedback Status Cruise request driving force feedback mode No Control/Suspend/Neg Calc Prohibited/Pos Calc Prohibited/Normal - This item is displayed on the Techstream but is not used.
      Cruise Control Permission Condition Cruise control permission condition OK or NG - This item is displayed on the Techstream but is not used.
      Cruise Control Condition Cruise control system condition No Control/Constant Speed Control Mode - Ready/ - This item is displayed on the Techstream but is not used.
      Cruise Control Mode Cruise control mode condition No Control/Constant Speed Control Mode No Control: Cruise control mode not operating
      Constant Speed Control Mode: Constant speed control mode operating      		 -
      Cruise Request Gear Position Shift request from hybrid vehicle control ECU assembly None or 255 Gear Shift request from cruise control system -
      Cruise Acceleration and Deceleration Operation Condition Cruise acceleration and deceleration operation condition No Control/Constant Speed Control Mode - Standby/Constant Speed Control Mode - RES SW Control/Constant Speed Control Mode - COAST SW Control/Vehicle Distance Control Mode - Acceleration Operation - This item is displayed on the Techstream but is not used.
      Cancel Switch CANCEL switch status ON or OFF ON: CANCEL switch on
      OFF: CANCEL switch off      		 -
      -SET Switch -SET switch status ON or OFF ON: -SET switch on
      OFF: -SET switch off      		 -
      +RES Switch +RES switch status ON or OFF ON: +RES switch on
      OFF: +RES switch off      		 -
      Cruise Main Switch Operation Condition Cruise control main switch (ON/OFF button) status ON or OFF ON: Cruise control main switch (ON/OFF button) pushed
      OFF: Cruise control main switch (ON/OFF button) not pushed      		 -
      Cruise Ready Main-CPU Cruise control system standby condition ON or OFF Each time cruise control main switch (ON/OFF button) is pushed, ON or OFF changes -
      Cruise Ready Sub-CPU Cruise control system standby condition ON or OFF Each time cruise control main switch (ON/OFF button) is pushed, ON or OFF changes -
      Accelerator Pedal Condition of the accelerator pedal during cruising ON or OFF ON: Accelerator pedal depressed
      OFF: Accelerator pedal released      		 -
      Stop Light Switch Sub-CPU Stop light switch signal ON or OFF - This item is displayed on the Techstream but is not used.
      Request Manual Cancel Whether there is a manual cancel request ON or OFF - This item is displayed on the Techstream but is not used.
      Request Automatic Cancel Whether there is an automatic cancel request ON or OFF - This item is displayed on the Techstream but is not used.
      Cruise Brake Control Decision Cruise brake control decision ON or OFF ON: Brake pedal depressed
      OFF: Brake pedal released      		 -
      Cruise Brake Control Permission Condition Cruise brake control permission condition OK or NG - This item is displayed on the Techstream but is not used.
      Cruise Indicator Cruise control indicator status ON or OFF ON: Cruise control indicator illuminates
      OFF: Cruise control indicator turns off      		 -
      Wheel Speed Sensor and Deceleration Sensor Speed sensor signal and deceleration sensor signal condition Avail or Not Avl Avail: Speed sensor signal and deceleration sensor signal available
      Not Avl: Speed sensor signal and deceleration sensor signal not available      		 -
      Gradient of Road Surface Gradient of road surface condition -32.76 to 32.76 m/s2 - This item is displayed on the Techstream but is not used.
  2. PERFORM 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 the Active Test according to the display on the Techstream.

      HINT: 

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

      Body Electrical > Combination Meter > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Meter Display 1 Multi-information display OFF or All -
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