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PRE-CRASH SAFETY SYSTEM DATA LIST / ACTIVE TEST

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  1. DATA LIST

    Tip:

    Using the GTS 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 GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus:


      1. for Pre-Crash: Body Electrical / Pre-Crash / Data List.

      2. for Pre-Crash 2: Body Electrical / Pre-Crash 2 / Data List.

    5. Read the Data List according to the display on the GTS.

      Tip:

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

      Table 1. Pre-Crash
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Driver Belt Control

      Seat belt control status of driver seat/

      UNSPPRT, STOP, ON or UNKNOWN

      UNSPPRT: Seat belt control unsupported

      STOP: Control stopped

      ON: Controlled

      UNKNOWN: Indeterminate data

      		 Seat belt (for driver) is fastened
      Passenger Belt Control

      Seat belt control status of passenger seat/

      UNSPPRT, STOP, ON or UNKNOWN

      UNSPPRT: Seat belt control unsupported

      STOP: Control stopped

      ON: Controlled

      UNKNOWN: Indeterminate data

      		 Seat belt (for passenger) is fastened
      Driver Buckle SW

      Buckle switch status of driver seat/

      UNKNOWN, UNSET, SET or ERROR

      UNKNOWN: Indeterminate data

      UNSET: Driver seat belt unfastened

      SET: Driver seat belt fastened

      ERROR: Buckle switch malfunction

      		 -
      Passenger Buckle SW

      Buckle switch status of passenger seat/

      UNKNOWN, UNSET, SET or ERROR

      UNKNOWN: Indeterminate data

      UNSET: Passenger seat belt unfastened

      SET: Passenger seat belt fastened

      ERROR: Buckle switch malfunction

      		 -
      Number of Trouble Codes Number of past trouble codes/min: 0, max: 255 Number of DTCs will be displayed -
      Table 2. Pre-Crash 2
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Wiper Information

      Wiper operational status/

      Unoperat, Oil off, Mist, Washer, Unknown, Intermi, Lo or Hi

      		 The respective operational status displayed Not Supported
      PCS OFF Switch

      Pre-crash system cancel switch assembly status/

      ON or OFF

      ON: Pre-crash system cancel switch assembly on

      OFF: Pre-crash system cancel switch assembly off

      		 -
      Pre-crash safety system

      Pre-crash safety system control/

      Valid or Inval

      Valid: Pre-crash safety system control possible

      Inval: Pre-crash safety system control not possible

      		-
      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 Brake Ind

      Pre-crash safety system "BRAKE!" alert status/

      ON or OFF

      ON: Pre-crash safety system "BRAKE!" alert on

      OFF: Pre-crash safety system "BRAKE!" alert off

      		 -
      Pre-Crash Safety Warning Buz

      Pre-crash safety system warning buzzer/

      Valid or Inval

      Valid: Pre-crash safety system warning buzzer operation possible

      Inval: Pre-crash safety 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-crash seat belt not activated

      		 Signal status changes when the pre-crash seat belt is activated before a crash
      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 crash

      (Pre-crash brake will activate only in situations where the driver depresses the brake pedal)
      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 crash 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 not operating

      		 Status changes when pre-crash brake operates before a crash
      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 crash
      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 assembly environment condition history/

      Good or Bad

      Good: No history of excessive bad environment

      Bad: History of excessive bad environment

      		 -
      Curr Com PCS-WIL-R

      Driver seat active headrest ECU connection status/

      with or without

      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/

      with or without

      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/

      with or without

      with: Night view ECU connected

      without: Night view ECU not connected

      		 Not Supported
      Curr Com Front Camera Module Lane recognition camera sensor connection status / with or without

      with: Lane recognition camera sensor connected

      without: Lane recognition camera sensor not connected

      		 -
      Country# (DSS)

      Destination country for driving support computer/

      JPN, NA, EURO, AUS, SAFC, OTHER, TWN, CHINA, THAI, GCC or NOFIX

      		 Actual country code -
      The Number of DTCs Number of past trouble codes/min: 0, max: 255 Number of DTCs will be displayed -

  2. ACTIVE TEST

    Tip:

    Using the GTS 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 GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus:


      1. for Pre-Crash: Body Electrical / Pre-Crash / Active Test.

      2. for ABS/VSC/TRC: Chassis / ABS/VSC/TRC / Active Test.

    5. Perform Active Test according to the display on the GTS.

      Tip:

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

      Table 3. Pre-Crash
      Tester Display Test Part Control Range Diagnostic Note
      Driver Seat Belt Motor Driver seat belt motor ON / OFF Seat belt (for driver) is fastened
      Passenger Seat Belt Motor Passenger seat belt motor ON / OFF Seat belt (for passenger) is fastened
      Driver and Passenger Seat Belt Motor Driver and passenger seat belt motors ON / OFF Seat belts (for driver and passengers) are fastened
      Seat Belt Motor Backwards Operation Driver and passenger seat belt motor ON / OFF Seat belt (for driver and passenger) is operated backwards
      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 the belt motor at an interval of 30 seconds or more.

      Table 4. ABS/VSC/TRC
      Tester Display Test Part Control Range Diagnostic Note
      DSS Signal Buzzer Skid control buzzer ON/OFF Buzzer can be heard