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Home >> Lexus >> 2016 >> NX 200t Base, AWD >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Pre-Collision System - Diagnostics - Introduction >> Pre-Collision System >> Data List / Active Test [09/2017 - 05/2019] >> Data List / Active Test [09/2017 - 05/2019]

Data List / Active Test [09/2017 - 05/2019]

  1. 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.

    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 Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Pre-Collision 2 / Data List.
    5. Read the Data List according to the display on the Techstream.

      Body Electrical > Pre-Collision 2 > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Turn Light RH Turn signal switch (right) status ON or OFF ON: Turn signal switch (right) on
      OFF: Turn signal switch (right) off      		 -
      Turn Light LH Turn signal switch (left) status ON or OFF ON: Turn signal switch (left) on
      OFF: Turn signal switch (left) off      		 -
      PCS OFF Switch Pre-collision system on/off status ON or OFF ON: Pre-collision system on
      OFF: Pre-collision system off      		 -
      PCS Indicator "Pre-Collision System Malfunction Visit Your Dealer" display request signal ON or OFF ON: "Pre-Collision System Malfunction Visit Your Dealer" display requested
      OFF: "Pre-Collision System Malfunction Visit Your Dealer" display not requested      		 -
      PCS Disabled Indicator "Pre-Collision System Unavailable" display request signal ON or OFF ON: "Pre-Collision System Unavailable" display requested
      OFF: "Pre-Collision System Unavailable" display not requested      		 -
      Pre-Collision Safety Warning Buz Pre-collision system warning buzzer Valid or Inval Valid: Pre-collision system warning buzzer operation possible
      Inval: Pre-collision system warning buzzer operation not possible      		 -
      Pre-Collision Brake Pre-collision braking function Valid or Inval Valid: Pre-collision braking operation possible
      Inval: Pre-collision braking operation not possible      		 -
      PBA Start Pre-collision brake assist activation signal OFF, Standby, Assist Lv1 or Assist Lv2 OFF: Pre-collision brake assist not operating
      Standby: Brake pedal not depressed during pre-collision brake assist operation
      Assist Lv1: Brake pedal depressed during pre-collision brake assist operation
      Assist Lv2: Brake pedal firmly depressed during pre-collision brake assist operation      		 Signal status changes when the pre-collision brake assist is activated before a crash(Pre-collision brake will activate only in situations where the driver depresses the brake pedal)
      Warning Brake - - - Not applicable to the vehicle
      Brake Assist Standby - - - This item is displayed on the Techstream but is not used.
      Pre-Collision Brake Control Pre-collision braking operational status ON or OFF ON: Pre-collision braking operating
      OFF: Pre-collision braking not operating      		 -
      AVS Start AVS control activation start ON or OFF ON: AVS control activated
      OFF: AVS control not activated      		 w/ Adaptive Variable Suspension System
      VGRS Start - - - Not applicable to the vehicle
      PBA Control Pre-collision brake assist operational status Valid or Invalid Valid: Pre-collision brake assist control operation possible
      Invalid: Pre-collision brake assist control operation not possible      		 -
      Pre-Collision Safety Brake Ind Pre-collision system alarm warning message status ON or OFF ON: Displayed
      OFF: Not displayed      		 "BRAKE!" is displayed
      PCS Collision Alarm Buzzer Skid control buzzer status ON or OFF ON: Skid control buzzer sounding
      OFF: Skid control buzzer not sounding      		 -
      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-Temperature Malfunction History Millimeter wave radar sensor assembly abnormal temperature history ON or OFF ON: History of abnormal temperature
      OFF: No history of abnormal temperature      		 -
      Front Radar-Low Voltage History Millimeter wave radar sensor assembly low voltage history ON or OFF ON: History of low voltage
      OFF: No history of low voltage      		 -
      Front Radar-Incorrect Axial Gap (Vertical) History Millimeter wave radar sensor assembly vertical misalignment history ON or OFF ON: History of vertical misalignment
      OFF: No history of vertical misalignment      		 When the "Pre-Collision System Unavailable" message is displayed and "History:ON" is output, the millimeter wave radar sensor may be automatically performing beam axis calibration. In this case, perform beam axis adjustment.
      Front Radar-Incorrect Axial Gap (Horizontal) History Millimeter wave radar sensor assembly horizontal misalignment history ON or OFF ON: History of horizontal misalignment
      OFF: No history of horizontal misalignment      		 -
      Front Recognition Camera-Blockage History Forward recognition camera obstruction history ON or OFF ON: History of being obstructed
      OFF: No history of being obstructed      		 -
      Front Recognition Camera-Malfunction History Forward recognition camera system unavailable history ON or OFF ON: History of unavailable
      OFF: No history of unavailable      		 -
      Driving Support ECU Destination Variation No Destination country for driving support computer Destination Variation No or Not Available Actual country code -
      Control Mode ECU control mode status Normal or Check 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 set to ON
      OFF: 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 set to ON
      OFF: 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 set to ON
      OFF: 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 set to ON
      OFF: Customize setting set to OFF      		 -
      The Number of DTCs Number of trouble codes 0 to 255 Number of DTCs will be displayed -
  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 engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Pre-Collision 2 / Active Test.
    5. Perform the Active Test according to the display on the Techstream.

      Body Electrical > Pre-Collision 2 > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      PCS Collision Alarm Buzzer Skid control buzzer ON / OFF Test possible with engine switch on (IG), vehicle stopped
    6. Enter the following menus: Chassis / ABS/VSC/TRAC / Active Test.
    7. Perform the Active Test according to the display on the Techstream.

      Chassis > ABS/VSC/TRAC > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Stop Light Relay Stop light control ECU assembly ECU (Stop light output) ON/OFF Stop lights come on
    8. Enter the following menus: Body Electrical / Combination Meter / Active Test.
    9. Perform the Active Test according to the display on the Techstream.

      Body Electrical > Combination Meter > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Indicat. Pre-Collision PCS warning light ON / OFF Test possible with engine switch on (IG), vehicle stopped
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