PRE-CRASH SAFETY SYSTEM DATA LIST / ACTIVE TEST


  1. DATA LIST

    Tech Tips

    Using the intelligent tester 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.

    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 intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Pre-Crash / Data List.

    5. Enter the following menus: Body / Pre-Crash 2 / Data List.

    6. Read the Data List according to the display on the intelligent tester.

      Tech Tips

      As the driving support ECU and seat belt control ECU have Data List for pre-crash safety system, be sure to check the Pre-Crash and Pre-Crash 2 Data List.

      Pre-Crash
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Driver Buckle SW

      Buckle switch status of driver side seat/

      UNSET / SET / NG

      UNSET: Driver side seat belt unfastened

      SET: Driver side seat belt fastened

      NG: Indeterminate data

      		 -
      Passenger Buckle SW

      Buckle switch status of passenger side seat/

      UNSET / SET / NG

      UNSET: Passenger side seat belt unfastened

      SET: Passenger side seat belt fastened

      NG: Indeterminate data

      		 -
      Driver Belt Control

      Seat belt control status of driver side seat/

      STOP / ON / ERROR

      STOP: Control stopped

      ON: Controlled

      ERROR: Indeterminate data

      		 Seat belt (driver side) is fastened
      Passenger Belt Control

      Seat belt control status of passenger side seat/

      STOP / ON / ERROR

      STOP: Control stopped

      ON: Controlled

      ERROR: Indeterminate data

      		 Seat belt (passenger side) is fastened
      Number of Trouble Code Number of past trouble codes/min: 0, max: 255 Number of DTCs will be displayed -
      Pre-Crash 2
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Wiper Information

      Wiper operational status/

      Unoperat, Oil off, Mist, Washer, Unknown, Intermittent, Lo, Hi

      		 The respective operational status displayed Not supported
      Pre-Crash Brake OFF Switch

      Pre-crash brake cancel switch status/

      ON or OFF

      ON: Pre-crash brake cancel switch on

      OFF: Pre-crash brake cancel switch off

      		 -
      Pre-Crash System Invalid

      Pre-crash safety system control/

      ON or OFF

      ON: Pre-crash safety system control not possible

      OFF: Pre-crash safety system control possible

      		 -
      DCam Indicator

      Driver camera indicator display request signal/

      ON or OFF

      ON: Driver camera indicator display requested

      OFF: Driver camera indicator display not requested

      		 Not supported
      PCS Indicator

      "CHECK PCS SYSTEM" display request signal/

      ON or OFF

      ON: "CHECK PCS SYSTEM" display requested

      OFF: "CHECK PCS SYSTEM" display not requested

      		 -
      PCS Disabled Indicator

      "PCS TEMPORARILY NOT AVAILABLE" display request signal/

      ON or OFF

      ON: "PCS TEMPORARILY NOT AVAILABLE" display requested

      OFF: "PCS TEMPORARILY NOT AVAILABLE" display not requested

      		 -
      Pre-Crash Safety Warning Ind

      PCS system warning indicator status/

      ON or OFF

      ON: Pre-crash safety warning indicator is on

      OFF: Pre-crash safety warning indicator is off

      		 -
      Pre-Crash Safety Brake Ind

      PCS system "BRAKE!" alert status/

      ON or OFF

      ON: PCS system "BRAKE!" alert is on

      OFF: PCS system "BRAKE!" alert is off

      		 -
      Pre-Crash Safety Warning Buz

      PCS system warning buzzer/

      Valid or Inval

      Valid: PCS system warning buzzer operation possible

      Inval: PCS system warning buzzer operation not possible

      		 -
      Pre-Crash Brake

      Pre-crash brake function/

      Valid or Inval

      Valid: Pre-crash brake operation possible

      Inval: Pre-crash brake operation not possible

      		 -
      Front Radar PSB

      Front radar-linked pre-crash seat belt activation signal/

      ON or OFF

      ON: Front radar-linked pre-crash seat belt activated

      OFF: Front radar-linked pre-collision seat belt not activated

      		 Status changes when the pre-crash seat belt is activated before a collision
      PBA Start

      Pre-crash brake assist activation signal/

      ON or OFF

      ON: Pre-crash brake assist activated

      OFF: Pre-crash brake assist not activated

      Signal status changes when the pre-crash brake assist is activated before a collision

      (Pre-crash brake will activate only in situations where the driver depresses the brake pedal)
      Warning Brake

      Warning brake activation/

      ON or OFF

      ON: Warning brake operation activated

      OFF: Warning brake operation not activated

      		 Signal status changes when the warning brake function lightly applies the brakes to warn the driver when signals from the driver monitor determine that the driver is not facing the camera
      Brake Assist Standby

      Supplemental brake pressure signal/

      ON or OFF

      ON: Supplemental brake pressure being provided

      OFF: Supplemental brake pressure not being provided

      		 Signal status changes when supplemental brake pressure is being provided after a collision is judged as unavoidable and before the brake pedal is depressed
      Pre-Crash Brake Control

      Pre-crash brake operational status/

      ON or OFF

      ON: Pre-crash brake operating

      OFF: Pre-crash brake function not operating

      		 Status changes when pre-crash brake operates before a collision
      AVS Start

      AVS control activation status/

      ON or OFF

      ON: AVS control activated

      OFF: AVS control not activated

      		 Status changes when the suspension is controlled (stiffened) prior to a collision
      CCS Cancel

      Automatic cancellation of cruise control during pre-crash brake activation/

      ON or OFF

      ON: Cruise control automatically canceled

      OFF: Cruise control not automatically canceled

      		 -
      Front Radar-Dirt History

      Millimeter wave radar sensor assembly dirt history/

      ON or OFF

      ON: History of excessive dirt

      OFF: No history of excessive dirt

      		 -
      Front Radar-Environment Hist

      Millimeter wave radar sensor temperature condition history/

      Good or Bad

      Good: No history of excessive temperature

      Bad: History of excessive temperature

      		 -
      Curr Com PCS-WIL-R

      Driver seat active headrest ECU connection status/

      without or with

      with: Driver seat active headrest ECU connected

      without: Driver seat active headrest ECU not connected

      		 Not supported
      Curr Com PCS-WIL-L

      Front passenger seat active headrest ECU connection status/

      without or with

      with: Front passenger seat active headrest ECU connected

      without: Front passenger seat active headrest ECU not connected

      		 Not supported
      Curr Com Night View ECU

      Night view ECU connection status/

      without or with

      with: Night view ECU connected

      without: Night view ECU not connected

      		 Not supported
      Country# (DSS)

      Destination country for driving support computer/

      JPN, NA, EURO, AUS, SAFC, OTHER, TWN, CHINA, THAI, GCC, NOFI

      		 Actual country -
      The Number of DTCs

      Number of DTCs/

      0 to 255

      When system is normal: 0

      When a malfunction is detected: More than 0

      		 -

  2. ACTIVE TEST

    Tech Tips

    Using the intelligent tester 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 intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Pre-Crash / Active Test.

    5. Perform Active Test according to the display on the intelligent tester.

      Tech Tips

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

      Pre-Crash
      Tester Display Test Part Control Range Diagnostic Note
      Driver Seat Belt Motor Driver seat belt motor

      ON: Seat belt motor operates

      OFF: Seat belt motor does not operate

      		 Seat belt (driver side) is fastened
      Passenger Seat Belt Motor Passenger seat belt motor

      ON: Seat belt motor operates

      OFF: Seat belt motor does not operate

      		 Seat belt (passenger side) is fastened
      Driver and Passenger Seat Belt Motor Driver and passenger seat belt motors

      ON: Seat belt motors operate

      OFF: Seat belt motors do not operate

      		 Seat belts (driver and passenger sides) are fastened

      Note


      • The seat belt motor will only operate when the tongue plate is inserted into the buckle (seat belt fastened).

      • To prevent overheating the belt motor, this test cannot be activated continuously. Operate it using at least a 30-second interval.