RX400h · Service Manual STEERING

FREEZE FRAME DATA

Troubleshooting


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 ignition switch on 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 ignition switch on and check the freeze frame data by following the prompts on the intelligent tester display.

    Item
    		 Item Description/Range (Display)
    		 Inspection Condition
    		 Reference Value
    Torque Sensor 1 Output
    		 Torque sensor 1 rotation angle/Min.: 0 deg, Max.: 360 deg
    		 Steering wheel is turned
    		 Value changes from 0 to 360° every 45° of steering angle
    Torque Sensor 2 Output
    		 Torque sensor 2 rotation angle/Min.: 0 deg, Max.: 360 deg
    		 Steering wheel is turned
    		 Value changes from 0 to 360° every 45° of steering angle
    Meter Vehicle Velocity
    		 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 Revolution
    		 Engine revolution/Min.: 0 rpm, Max.: 8192 rpm
    		 Engine is running at a constant speed
    		 No significant fluctuation
    Motor Actual Current
    		 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 Current
    		 Demanded amount of current to motor/Min.: -128 A, Max.: 127 A
    		 Power steering is in operation
    		 Value changes in proportion to steering effort
    Steering Angle Velocity
    		 Steering angle speed/Min.: -4096 deg/sec, Max.: 4064 deg/sec
    		 Steering wheel is turned
    		 Value changes in proportion to steering speed
    Thermistor Temperature
    		 ECU substrate temperature/ Min.: -50 °C, Max.: 205°C
    		 IG switch ON
    		 -
    PIG Power Supply
    		 Power source voltage to activate motor/Min.: 0 V, Max.: 25.5 V
    		 Power steering is in operation
    		 10 to 14 V
    IG Power Supply
    		 ECU power source voltage/Min.: 0 V, Max.: 25.5 V
    		 IG switch ON
    		 10 to 14 V
    TRQ1 Zero Point Value
    		 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 Point Value
    		 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 Wheel 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 Rotation Angle
    		 Motor rotation angle/Min.: 0 deg, Max.: 360 deg
    		 Steering wheel is turned
    		 Value changes from 0 to 360° every 45° of steering angle
    Command Value Current 2
    		 Demanded amount of current to motor 2/Min.: -128 A, Max.: 127 A
    		 -
    		 -
    Motor Voltage
    		 Motor power source voltage/Min.: 0 V, Max.: 64 V
    		 Power steering is in operation
    		 42 to 51 V
    Motor Terminal Volt (U)
    		 Motor terminal voltage (U phase)/Min.: 0 V, Max.: 64 V
    		 Power steering is in operation
    		 2 to 51 V
    Motor Terminal Volt (V)
    		 Motor terminal voltage (V phase)/Min.: 0 V, Max.: 64 V
    		 Power steering is in operation
    		 2 to 51 V
    Motor Terminal Volt (W)
    		 Motor terminal voltage (W phase)/Min.: 0 V, Max.: 64 V
    		 Power steering is in operation
    		 2 to 51 V
    Battery Voltage
    		 Battery voltage/Min.: 0 V, Max.: 25 V
    		 IG switch ON
    		 10 to 14 V
    DRDD Voltage
    		 Power source voltage to power steering converter/Min.: 0 V, Max.: 25 V
    		 IG switch ON
    		 10 to 14 V
    HV Battery Voltage
    		 HV battery voltage/Min.: 0 V, Max.: 510 V
    		 IG switch ON
    		 150 to 430 V
    Power Source OK Sig
    		 Power source OK signal/OK or NG
    		 IG switch ON
    		 OK
    Break Gate Request Sig
    		 Break gate request signal/OK or Break
    		 IG switch ON
    		 OK
    DC-DC Warning Signal
    		 Power steering converter warning signal/OK, NG (1), NG (2) or STOP (*1)
    		 IG switch ON
    		 OK
    PS Assist Signal
    		 Power steering assist signal/ON or OFF
    		 IG switch ON
    		 OK
    Motor Overheat Record
    		 Continuous overheat prevention control record/Rec or Unrec
    		 -
    		 -
    Motor Lo Power Record
    		 PIG power source voltage drop record/Rec or Unrec
    		 -
    		 -
    Eng Rev Inter Record
    		 Record of engine revolution signal interruption/Rec or Unrec
    		 -
    		 -
    Str Angle Inter Record
    		 Record of steering angle sensor signal interruption/Rec or Unrec
    		 -
    		 -
    Spd Sig Invalid Record
    		 Record of vehicle speed signal invalid/Rec or Unrec
    		 -
    		 -
    Control Mode
    		 Codes indicating DTC detection timing during ECU control are displayed in hexadecimal
    		 -
    		 -
    Test Mode Status
    		 Selected mode/NORMAL or TEST
    		 -
    		 -
    Ready Status
    		 Ready status/OFF or Ready
    		 -
    		 -
    *1 NG (1): DC-DC Converter has an internal failure./NG (2): DC-DC Converter has an external failure.

← DTC CHECK / CLEARFAIL-SAFE CHART →