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Home >> Lexus >> 2009 >> RX 350 AWD >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Vehicle Stability Control System (Diagnostics - Introduction) >> Vehicle Stability Control System >> Data List / Active Test >> Data List / Active Test

Data List / Active Test

  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. Warm up the engine.
    2. Turn the ignition switch off.
    3. Connect the Techstream to the DLC3.
    4. Turn the ignition switch to the ON position.
    5. Turn the Techstream on.
    6. Enter the following menus: Chassis / ABS/VSC/TRAC / Data List.
    7. According to the display on the Techstream, perform the Data List.
      ABS/VSC/TRAC:

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      ABS Motor Relay ABS motor relay / ON or OFF ON : Motor relay ON -
      Solenoid Relay Solenoid relay / ON or OFF ON : Solenoid relay ON -
      Main Idle SW Main idle switch / ON or OFF ON : Accelerator pedal released
      OFF : Accelerator pedal depressed
      -
      Stop Light SW Stop light switch / ON or OFF ON : Brake pedal depressed
      OFF : Brake pedal released
      -
      Parking Brake SW Parking brake switch / ON or OFF ON : Parking brake applied
      OFF : Parking brake released
      -
      Stepping Force SW Brake pedal load sensing switch / ON or OFF ON : Brake pedal depressed beyond the specified point
      OFF : Brake pedal not depressed beyond the specified point
      -
      FR Wheel ABS Control ABS operation (FR) / BEFORE or OPERATE BEFORE : No ABS operation (FR)
      OPERATE : During ABS operation (FR)
      -
      FL Wheel ABS Control ABS operation (FL) / BEFORE or OPERATE BEFORE : No ABS operation (FL)
      OPERATE : During ABS operation (FL)
      -
      RR Wheel ABS Control ABS operation (RR) / BEFORE or OPERATE BEFORE : No ABS operation (RR)
      OPERATE : During ABS operation (RR)
      -
      RL Wheel ABS Control ABS operation (RL) / BEFORE or OPERATE BEFORE : No ABS operation (RL)
      OPERATE : During ABS operation (RL)
      -
      FR Wheel Speed Wheel speed sensor (FR) reading / min.: 0 MPH (0 km/h), max.: 202 MPH (326 km/h) Actual wheel speed Similar speed as indicated on speedometer
      FL Wheel Speed Wheel speed sensor (FL) reading / min.: 0 MPH (0 km/h), max.: 202 MPH (326 km/h) Actual wheel speed Similar speed as indicated on speedometer
      RR Wheel Speed Wheel speed sensor (RR) reading / min.: 0 MPH (0 km/h), max.: 202 MPH (326 km/h) Actual wheel speed Similar speed as indicated on speedometer
      RL Wheel Speed Wheel speed sensor (RL) reading / min.: 0 MPH (0 km/h), max.: 202 MPH (326 km/h) Actual wheel speed Similar speed as indicated on speedometer
      Deceleration Sensor 1 Acceleration sensor 1 reading / min.: -1.869 G, max.: 1.869 G Approximately 0 +- 0.13G at still condition Reading changes when vehicle is tilted
      Deceleration Sensor 2 Acceleration sensor 2 reading / min.: -1.869 G, max.: 1.869 G Approximately 0 +- 0.13G at still condition Reading changes when vehicle is tilted
      ECU IG Power Voltage ECU power supply voltage / NORMAL / TOO LOW / TOO HIGH TOO LOW: Less than 9.5 V
      NORMAL: 9.5 to 14.0 V
      TOO HIGH: More than 14.0 V
      -
      Solenoid (SFRR) ABS solenoid (SFRR) / ON or OFF ON : Operates -
      Solenoid (SFRH) ABS solenoid (SFRH) / ON or OFF ON : Operates -
      Solenoid (SFLR) ABS solenoid (SFLR) / ON or OFF ON : Operates -
      Solenoid (SFLH) ABS solenoid (SFLH) / ON or OFF ON : Operates -
      Solenoid (SRRR) ABS solenoid (SRRR) / ON or OFF ON : Operates -
      Solenoid (SRRH) ABS solenoid (SRRH) / ON or OFF ON : Operates -
      Solenoid (SRLR) ABS solenoid (SRLR) / ON or OFF ON : Operates -
      Solenoid (SRLH) ABS solenoid (SRLH) / ON or OFF ON : Operates -
      Solenoid (SMF) Master cut solenoid (SM1) / ON or OFF ON : Operates -
      Solenoid (SMR) Master cut solenoid (SM2) / ON or OFF ON : Operates -
      Engine Speed Engine Speed/ Min.: 0 rpm, Max.: 6000 rpm Actual engine speed -
      Vehicle Speed Wheel speed sensor reading / min.: 0 MPH (0 km/h), max.: 202 MPH (326 km/h) Actual vehicle speed Speed indicated on speedometer
      Yaw Rate Sensor Yaw rate sensor/ Min.: -128 deg/s, Max.: 127 deg/s Min.: -128 deg/s
      Max.: 127 deg/s
      -
      Zero Yaw Rate Sensor Memorized zero value/ Min.: -128 deg/s, Max.: 127 deg/s Min.: -128 deg/s
      Max.: 127 deg/s
      -
      Steering Angle Sensor Steering angle sensor/ Min.: -1,152 deg, Max.: 1,150.875 deg Left turn: Increase
      Right turn: Decrease
      -
      Master Cylinder Sensor 1 Master cylinder pressure sensor 1 reading / min.: 0 V, max.: 5 V When brake pedal is released : 0.3 to 0.9 V Reading increases when brake pedal is depressed
      TRAC/VSC Off Mode TRAC/VSC off mode / NORMAL, TRC OFF or VSC OFF NORMAL: Normal mode
      TRC OFF: TRAC off mode
      VSC OFF: VSC off mode
      -
      FR Speed Open FR speed sensor open detection / OPN_DET or NORMAL OPN_DET: Momentary interruption
      NORMAL: Normal
      -
      FL Speed Open FL speed sensor open detection / OPN_DET or NORMAL OPN_DET: Momentary interruption
      NORMAL: Normal
      -
      RR Speed Open RR speed sensor open detection / OPN_DET or NORMAL OPN_DET: Momentary interruption
      NORMAL: Normal
      -
      RL Speed Open RL speed sensor open detection / OPN_DET or NORMAL OPN_DET: Momentary interruption
      NORMAL: Normal
      -
      EFI Open EFI communication open detection / OPN_DET or NORMAL OPN_DET: Momentary interruption
      NORMAL: Normal
      -
      Yaw Rate Open Yaw rate sensor open detection / OPN_DET or NORMAL OPN_DET: Momentary interruption
      NORMAL: Normal
      -
      Deceleration Open Acceleration sensor open detection / OPN_DET or NORMAL OPN_DET: Momentary interruption
      NORMAL: Normal
      -
      Steering Open Steering angle sensor open detection / OPN_DET or NORMAL OPN_DET: Momentary interruption
      NORMAL: Normal
      -
      Master Cylinder 1 Open Master cylinder pressure sensor 1 open detection / OPN_DET or NORMAL OPN_DET: Momentary interruption
      NORMAL: Normal
      -
      Accelerator % The difference of a present accelerator / min.: 0 %, max.: 128% Min.: 0%
      Max.: 128%
      -
      Real Output Torque Real engine torque / min.: -1,024 N*m, max.: 1,016 N*m Min.: -1,024 N*m
      Max.: 1,016 N*m
      -
      Test Mode Test mode operation / NORMAL or TEST NORMAL : Normal mode
      TEST : During test mode
      -
      Number of DTC Number of DTC recorded / min.: 0, max.: 255 Min.: 0
      Max.: 255
      -
  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 to operate 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. Warm up the engine.
    2. Turn the ignition switch off.
    3. Connect the Techstream to the DLC3.
    4. Turn the ignition switch to the ON position.
    5. Turn the Techstream on.
    6. Enter the following menus: Chassis / ABS/VSC/TRAC / Active Test.
    7. According to the display on the Techstream, perform the Active Test.
      ABS/VSC/TRAC:

      Tester Display Test Part Control Range Diagnostic Note
      ABS Solenoid (SFRR) ABS solenoid (SFRR) Solenoid ON / OFF Operation of solenoid (clicking sound) can be heard
      ABS Solenoid (SFRH) ABS solenoid (SFRH) Solenoid ON / OFF Operation of solenoid (clicking sound) can be heard
      ABS Solenoid (SFLR) ABS solenoid (SFLR) Solenoid ON / OFF Operation of solenoid (clicking sound) can be heard
      ABS Solenoid (SFLH) ABS solenoid (SFLH) Solenoid ON / OFF Operation of solenoid (clicking sound) can be heard
      ABS Solenoid (SRRR) ABS solenoid (SRRR) Solenoid ON / OFF Operation of solenoid (clicking sound) can be heard
      ABS Solenoid (SRRH) ABS solenoid (SRRH) Solenoid ON / OFF Operation of solenoid (clicking sound) can be heard
      ABS Solenoid (SRLR) ABS solenoid (SRLR) Solenoid ON / OFF Operation of solenoid (clicking sound) can be heard
      ABS Solenoid (SRLH) ABS solenoid (SRLH) Solenoid ON / OFF Operation of solenoid (clicking sound) can be heard
      TRAC Solenoid (SMF) Master cut solenoid (SM1) Solenoid ON / OFF Operation of solenoid (clicking sound) can be heard
      TRAC Solenoid (SMR) Master cut solenoid (SM2) Solenoid ON / OFF Operation of solenoid (clicking sound) can be heard
      ABS Solenoid (SFRR & SFRH) ABS solenoids (SFRR and SFRH) Solenoids ON / OFF Operation of solenoid (clicking sound) can be heard
      ABS Solenoid (SFLR & SFLH) ABS solenoids (SFLR and SFLH) Solenoids ON / OFF Operation of solenoid (clicking sound) can be heard
      ABS Solenoid (SRRR & SRRH) ABS solenoids (SRRR and SRRH) Solenoids ON / OFF Operation of solenoid (clicking sound) can be heard
      ABS Solenoid (SRLR & SRLH) ABS solenoids (SRLR and SRLH) Solenoids ON / OFF Operation of solenoid (clicking sound) can be heard
      ABS Solenoid (SFRH & SFLH) ABS solenoids (SFRH and SFLH) Solenoids ON / OFF Operation of solenoid (clicking sound) can be heard
      Solenoid Relay ABS solenoid relay Relay ON / OFF Operation of solenoid (clicking sound) can be heard
      ABS Motor Relay ABS motor relay Relay ON / OFF Operation of motor (clicking sound) can be heard
      ABS Warning Light ABS warning light Warning light ON / OFF Observe combination meter
      VSC Warning Light VSC OFF indicator light Indicator light ON / OFF Observe combination meter
      Slip Indicator Light SLIP indicator light Indicator light ON / OFF Observe combination meter
      Brake Warning Light Brake warning light Warning light ON / OFF Observe combination meter
      VSC H/B Warning Buzzer Skid control buzzer Buzzer ON / OFF Buzzer sound can be heard