POWER STEERING SYSTEM FREEZE FRAME DATA


  1. FREEZE FRAME DATA

    Note


    • It is difficult to show the specified values (judgment 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.

    • Turn the engine switch on (IG) and park the vehicle on level ground. Check the freeze frame data by using the intelligent tester or Techstream.


    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.

      EMPS
      Tester Display

      Measurement Item/

      Range

      		 Normal Condition Diagnostic Note
      Engine Speed

      Vehicle speed from meter/

      Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph)

      1. Vehicle is stopped: 0 km/h (0 mph)

      2. Vehicle is driven at a constant speed: 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 When malfunction occurs, problem may be in steering system
      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 When malfunction occurs, problem may be in steering system
      Str Angl Vel

      Steering angle speed/

      Min.: -4,096 deg/sec, Max.: 4064 deg/sec

      		 Steering wheel is turned: Value changes in proportion to steering speed -
      Thermistor Temp

      ECU substrate temperature/

      Min.: -50°C, Max.: 205°C

      		 Equivalent to ambient ECU substrate temperature -
      IG Supply

      ECU power source voltage/

      Min.: 0 V, Max.: 25.5 V

      		 Engine switch on (IG): 11 to 14 V -
      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 When malfunction occurs, problem may be in torque sensor
      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 When malfunction occurs, problem may be in torque sensor
      Trq1 Zero Val

      Zero point value of torque sensor 1/

      Min.: 0 deg, Max.: 360 deg

      Steering wheel is not turned

      (without load)

      		 When malfunction occurs, problem may be in torque sensor
      Trq2 Zero Val

      Zero point value of torque sensor 2/

      Min.: 0 deg, Max.: 360 deg

      Steering wheel is not turned

      (without load)

      		 When malfunction occurs, problem may be in torque sensor
      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 When malfunction occurs, problem may be in torque sensor
      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 When malfunction occurs, problem may be in rotation angle sensor
      Command Val 2

      Amount of current demanded by motor 2/

      Min.: -128 A, Max.: 127 A

      		 Power steering is in operation: Value changes in proportion to steering effort When malfunction occurs, problem may be in power steering motor.
      Motor Voltage

      Motor power source voltage/

      Min.: 0 V, Max.: 64 V

      		 Power steering is in operation: 2 to 48 V -
      Mtr Terminal(U)

      Motor terminal voltage (U phase)/

      Min.: 0 V, Max.: 64 V

      		 Power steering is in operation: 2 to 48 V When malfunction occurs, problem may be in power steering motor.
      Mtr Terminal(V)

      Motor terminal voltage (V phase)/

      Min.: 0 V, Max.: 64 V

      		 Power steering is in operation: 2 to 48 V When malfunction occurs, problem may be in power steering motor.
      Mtr Terminal(W)

      Motor terminal voltage (W phase)/

      Min.: 0 V, Max.: 64 V

      		 Power steering is in operation: 2 to 48 V When malfunction occurs, problem may be in power steering motor.
      Battery Voltage

      Battery voltage/

      Min.: 0 V, Max.: 25.5 V

      		 11 to 14 V -
      DC-DC Warning

      42 V DC / DC converter warning signal/

      OK or NG

      		 OK or NG -
      PS Assist Sig

      Power steering assist signal/

      ON or OFF

      		 ON or OFF -
      Motor Actual 2

      Amount of current to motor 2

      Min.: -327.68 A, Max.: 327.67 A

      		 Power steering is in operation: Value changes in proportion to steering effort When malfunction occurs, problem may be in power steering motor.