Electronic Power Steering System Freeze Frame Data

Steering. Lexus Is250, Is220D. Gse20 Ale20
Power Steering. Lexus Is250, Is220D. Gse20 Ale20
  1. FREEZE FRAME DATA

Electronic Power Steering System -- Freeze Frame Data



FREEZE FRAME DATA
NOTICE:
  1. It is difficult to show the specified values (judgement values) clearly because freeze frame data values change significantly due to differences in measurement conditions, surroundings, or vehicle conditions. For this reason, there may be a problem even when the values are within specifications.
  2. Turn the engine switch on (IG) and park the vehicle on level ground. Check the freeze frame data by using the intelligent tester.
  1. Connect the intelligent tester to the DLC3.

  2. Turn the engine switch on (IG) and check the freeze frame data by following the prompts on the intelligent tester's display screen.

    Item
    Item Description/Range (Display)
    Inspection Condition
    Reference Value
    Trq1
    Torque sensor 1 rotation angle/
    Min.: 0 deg, Max.: 360 deg
    Steering wheel is turned
    Value changes from 0 to 360° every 22.5° of steering angle
    Trq2
    Torque sensor 2 rotation angle/
    Min.: 0 deg, Max.: 360 deg
    Steering wheel is turned
    Value changes from 0 to 360° every 22.5° of steering angle
    Engine Speed
    Vehicle speed from meter/
    Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph)
    1. Vehicle is stopped
    2. Vehicle is driven at a constant speed
    1. 0 km/h (0 mph)
    2. No significant fluctuation
    Engine Rev
    Engine revolution/
    Min.: 0 rpm, Max.: 8,192 rpm
    Engine is running at a constant speed
    No significant fluctuation
    Motor Actual
    Amount of current to motor/
    Min.: -128 A, Max.: 127 A
    Power steering is in operation
    Value changes in proportion to steering effort
    Command Value
    Demanded amount of current to motor/
    Min.: -128 A, Max.: 127 A
    Power steering is in operation
    Value changes in proportion to steering effort
    Str Angl Vel
    Steering angle speed/
    Min.: -4,096 deg/sec, Max.: 4,064 deg/sec
    Steering wheel is turned
    Value changes in proportion to steering speed
    Thermistor Temp
    ECU substrate temperature/
    Min.: -50°C, Max.: 205°C
    Engine switch on (IG)
    -
    PIG Supply
    Power source voltage to activate motor/
    Min.: 0 V, Max.: 25.5 V
    Power steering is in operation
    10 to 14 V
    IG Supply
    ECU power source voltage/
    Min.: 0 V, Max.: 25.5 V
    Engine switch on (IG)
    10 to 14 V
    Trq1 Zero Val
    Zero point value of torque sensor 1/
    Min.: 0 deg, Max.: 360 deg
    Steering wheel is not turned
    (without load)
    Values differ depending on vehicle
    Trq2 Zero Val
    Zero point value of torque sensor 2/
    Min.: 0 deg, Max.: 360 deg
    Steering wheel is not turned
    (without load)
    Values differ depending on vehicle
    Steering Torque
    Steering torque/
    Min.: -7.0 N*m, Max.: 7.0 N*m
    Steering wheel is turned
    Value changes in proportion to steering effort
    Motor Rotate
    Motor rotation angle/
    Min.: 0 deg, Max.: 360 deg
    Steering wheel is turned
    Value changes from 0 to 360° every 5° of steering angle
    Command Value 2
    Demanded amount of current to motor 2/
    Min.: -128 A, Max.: 127 A
    -
    -
    PIG2 Voltage
    Motor drive voltage after pressurization
    Power steering is in operation
    27 to 34 V
    Motor Voltage
    Motor power source voltage/
    Min.: 0 V, Max.: 64 V
    Power steering is in operation
    27 to 34 V
    Mtr Terminal (U)
    Motor terminal voltage (U phase)/
    Min.: 0 V, Max.: 64 V
    Power steering is in operation
    0 to 34 V
    Mtr Terminal (V)
    Motor terminal voltage (V phase)/
    Min.: 0 V, Max.: 64 V
    Power steering is in operation
    0 to 34 V
    Mtr Terminal (W)
    Motor terminal voltage (W phase)/
    Min.: 0 V, Max.: 64 V
    Power steering is in operation
    0 to 34 V
    Str Sens Sig
    Steering angle sensor signal status/
    OK or NG
    -
    -
    Mtr Overheat
    Continuous overheat prevention control record/
    REC or UNREC
    -
    -
    Mtr Low Power
    PIG power source voltage drop record/
    REC or UNREC
    -
    -
    Eng Rev Inter
    Record of engine revolution signal interruption/
    REC or UNREC
    -
    -
    Str Angl Inter
    Record of steering angle sensor signal interruption/
    REC or UNREC
    -
    -
    Spd Sig Invalid
    Record of vehicle speed signal invalid/
    REC or UNREC
    -
    -
    IG ON/OFF Times
    Number of times IG switch is turned on after DTC detection/
    Min.: 0 time, Max.: 255 times
    -
    -
    DTC
    Number of detected DTCs when freeze frame data is stored/
    Min.: 0, Max.: 255
    -
    -
    Battery Voltage
    Battery voltage/
    Min.: 0V, Max.: 25.5
    -
    10 to 14 V
    PS Assist Sig
    Power steering assist signal/
    ON or OFF
    Engine switch on (IG)
    -