LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2017 >> Prius C Three >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Pre-Collision System - Diagnostics - Introduction >> Pre-Collision System >> Data List / Active Test [11/2015 - 06/2017] >> Data List / Active Test [11/2015 - 06/2017]
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Data List / Active Test [11/2015 - 06/2017]

  1. DATA LIST 
    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.

    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: Chassis / PCS/LDA/RSA/LVN / Data List.
    5. Read the Data List according to the display on the Techstream.
      CHASSIS > PCS/LDA/RSA/LVN

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Lidar Detect Target Distance Displays distance of the highest priority object which is detected by Lidar. / 0 to 51.0 m Distance between the vehicle and a preceding vehicle When no preceding vehicle is detected, "0 m" (0 ft.) is displayed
      Headlight Type Displays headlight type / Halogen or LED Halogen: Vehicle equipped with halogen headlights
      LED: Vehicle equipped with LED headlights      		 -
      PCS Buzzer Demand Displays pre-collision city buzzer condition / ON or OFF ON: Pre-collision city buzzer operating
      OFF: Pre-collision city buzzer not operating      		 -
      Skid Control Buzzer Demand Displays lane departure alert buzzer condition / ON or OFF ON: Lane departure alert buzzer operating
      OFF: Lane departure alert buzzer not operating      		 Buzzer request when lane departure alert system enabled and vehicle deviated from white line
      RSA Equipped Information - - This item is displayed on the Techstream but is not used
      RSA Fusion Control - - This item is displayed on the Techstream but is not used
      Traffic Sign Speed Unit - - This item is displayed on the Techstream but is not used
      Estimated Traffic Division - - This item is displayed on the Techstream but is not used
      LVN Equipped Information - - This item is displayed on the Techstream but is not used
      History of Blockage Displays whether there are camera or laser sensor obstruction history / ON or OFF ON: Pre-collision city sensor (camera or laser sensor) obstruction history exists
      OFF: Pre-collision city sensor (camera or laser sensor) obstruction history does not exist      		 -
      History of Low Voltage Displays whether there is low voltage history / ON or OFF ON: Pre-collision city sensor low voltage history exists
      OFF: Pre-collision city sensor low voltage history does not exist      		 -
      History of High Voltage Displays whether there is high voltage history / ON or OFF ON: Pre-collision city sensor high voltage history exists
      OFF: Pre-collision city sensor high voltage history does not exist      		 -
      History of Low Temperature Displays whether there is low temperature history / ON or OFF ON: Pre-collision city sensor low temperature history exists
      OFF: Pre-collision city sensor low temperature history does not exist      		 -
      History of High Temperature Displays whether there is high temperature history / ON or OFF ON: Pre-collision city sensor high temperature history exists
      OFF: Pre-collision city sensor high temperature history does not exist      		 -
      Blockage Status Displays whether there is a camera obstruction malfunction / ON or OFF ON: Pre-collision city sensor (camera) obstructed
      OFF: Pre-collision city sensor (camera) not obstructed      		 -
      Low Voltage Status Displays whether there is a low voltage malfunction / ON or OFF ON: Pre-collision city sensor low voltage malfunction exists
      OFF: Pre-collision city sensor low voltage malfunction does not exist      		 -
      High Voltage Status Displays whether there is a high voltage malfunction / ON or OFF ON: Pre-collision city sensor high voltage malfunction exists
      OFF: Pre-collision city sensor high voltage malfunction does not exist      		 -
      Low Temperature Status Displays whether there is a low temperature malfunction / ON or OFF ON: Pre-collision city sensor low temperature malfunction exists
      OFF: Pre-collision city sensor low temperature malfunction does not exist      		 -
      High Temperature Status Displays whether there is a high temperature malfunction / ON or OFF ON: Pre-collision city sensor high temperature malfunction exists
      OFF: Pre-collision city sensor high temperature malfunction does not exist      		 -
      Lidar Blockage Status Displays whether laser sensor is dirty / ON or OFF ON: Dirt on pre-collision city sensor (laser sensor)
      OFF: No dirt on pre-collision city sensor (laser sensor)      		 -
      Control Mode Displays ECU control mode status / Normal or Check Mode Normal: Normal operation
      Check: Operating in Control Mode      		 -
      PCS Operation State Retention Setting PCS Operation State Retention Setting customize setting/ ON or OFF ON: Customize Setting customize setting set to ON
      OFF: Customize Setting customize setting set to OFF      		 -
      PCS Alarm Activation Distance Retention Setting 1 PCS Alarm Activation Distance Retention Setting 1 customize setting ON or OFF ON: Customize Setting 1 customize setting set to ON
      OFF: Customize Setting 1 customize setting set to OFF      		 -
      PCS Alarm Activation Distance Retention Setting 2 PCS Alarm Activation Distance Retention Setting 2 customize setting/ ON or OFF ON: Customize Setting 2 customize setting set to ON
      OFF: Customize Setting 2 customize setting set to OFF      		 -
      PCS Alarm Activation Distance Retention Setting 3 PCS Alarm Activation Distance Retention Setting 3 customize setting/ ON or OFF ON: Customize Setting 3 customize setting set to ON
      OFF: Customize Setting 3 customize setting set to OFF      		 -
      The Number of DTCs Number of trouble codes / 0 to 255 Number of DTCs will be displayed -
    6. Enter the following menus: Chassis / ABS/VSC/TRAC / Data List.
    7. Read the Data List according to the display on the Techstream.
      CHASSIS > ABS/VSC/TRAC > DATA LIST

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Stop Light SW Stop light switch assembly / ON or OFF ON: Brake pedal depressed
      OFF: Brake pedal released      		 -
      Stop Light Relay Output Stop light control relay (stop light switch assembly) output / ON or OFF ON: Relay output on
      OFF: Relay output 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 power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Chassis / PCS/LDA/RSA/LVN / Active Test.
    5. Perform 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.

      CHASSIS > PCS/LDA/RSA/LVN > ACTIVE TEST

      Tester Display Test Part Control Range Diagnostic Note
      PCS Buzzer Request Sounds pre-collision city buzzer ON/OFF Test possible with power switch on (IG), vehicle stopped
      Meter Buzzer Request Sounds lane departure alert meter buzzer ON/OFF Test possible with power switch on (IG), vehicle stopped
      Automatic High Beam Operates automatic high beam system ON/OFF This Active Test can only be performed when the power switch on (IG), the vehicle is stopped and the area around the vehicle is dark. (Normal system operation conditions, such as vehicle speed and shift lever position, do not need to be met.)
      NOTE:

      The pre-collision city sensor detects that the area around the vehicle is dark when it is covered by a cloth. However, covering the pre-collision city sensor may cause a warning message to be displayed on the multi-information display. This Active Test cannot be performed if the warning message is displayed.

    6. Enter the following menus: Chassis / ABS/VSC/TRAC / Active Test.
    7. Perform 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.

      CHASSIS > ABS/VSC/TRAC > ACTIVE TEST

      Tester Display Test Part Control Range Diagnostic Note
      Stop Light Relay Stop light control relay (stop light switch assembly) ON/OFF Possible at vehicle speed of 0 km/h (0 mph)
    8. Enter the following menus: Body Electrical / Combination Meter / Active Test.
    9. Perform 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 Test Part Control Range Diagnostic Note
      Indicat. Precrash PCS warning light ON/OFF -
scientia non olet · About LEMON Manuals