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Home >> Toyota >> 2012 >> Prius Four >> Repair and Diagnosis (Single Page) >> External Pages >> Different variant/trim >> Section 22 (Power Steering System (Plug-In) (Diagnostics - Introduction)) >> Power Steering System >> Freeze Frame Data >> Freeze Frame Data
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Freeze Frame Data

WARNING: This page is about a different variant/trim than selected.
  1. FREEZE FRAME DATA 
    NOTE:
    • Freeze frame data values will vary depending on the measurement conditions, surroundings, or vehicle conditions. For this reason, there may be a problem even if the values are within specifications.
    • Turn the power switch on (IG) and park the vehicle on level ground. Check the freeze frame data by using the Techstream.
    1. Turn the power switch off.
    2. Connect the Techstream to the DLC3.
    3. Turn the power switch on (IG).
    4. Turn the Techstream on.
    5. Check the freeze frame data on the Techstream.
      EMPS

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Meter Vehicle Velocity Vehicle speed from meter/
      Min.: 0.0 km/h (0.0mph)
      Max.: 300.0 km/h (186.4 mph)      		 0 km/h (0 mph) Power switch on (READY) and vehicle stopped
      No significant fluctuation Power switch on (READY) and vehicle driven at constant speed
      Motor Actual Current Current to motor/
      Min.: -327.68 A
      Max.: 327.67 A      		 Value changes in proportion to steering effort
      -The value increases when turning right and decreases when turning left      		 Power switch on (READY) and steering wheel being turned
      Command Value Current Requested current to motor/
      Min.: -327.68 A
      Max.: 327.67 A      		 Value changes in proportion to steering effort
      -The value increases when turning right and decreases when turning left      		 Power switch on (READY) and steering wheel being turned
      Thermistor Temperature ECU substrate temperature/
      Min.: -50.0°C (-58.0°F)
      Max.: 150.0°C (302.0°F)      		 -50 to 150°C (-58 to 302°F) -
      PIG Power Supply Power source voltage to activate motor/
      Min.: 0.0000 V
      Max.: 20.1531 V      		 9 to 16 V Always
      IG Power Supply ECU power source voltage/
      Min.: 0.0000 V
      Max.: 20.1531 V      		 9 to 16 V Power switch on (IG)
      Steering Wheel Torque Steering wheel torque/
      Min.: -327.68 Nm
      Max.: 7.00 Nm      		 Value changes in proportion to steering effort
      -The value increases when turning left and decreases when turning right      		 Power switch on (READY) and steering wheel being turned
      Torque Sensor 1 Output Torque sensor 1 output value/
      Min.: 0.0000 V
      Max.: 4.9725 V      		 2.3 to 2.7 V Power switch on (READY) and steering wheel not being turned (without load)
      2.5 to 3.8 V Power switch on (READY) and steering wheel being turned to right with vehicle stopped
      1.2 to 2.5 V Power switch on (READY) and steering wheel being turned to left with vehicle stopped
      Torque Sensor 2 Output Torque sensor 2 output value/
      Min.: 0.0000 V
      Max.: 4.9725 V      		 2.3 to 2.7 V Power switch on (READY) and steering wheel not being turned (without load)
      1.2 to 2.5 V Power switch on (READY) and steering wheel being turned to right with vehicle stopped
      2.5 to 3.8 V Power switch on (READY) and steering wheel being turned to left with vehicle stopped
      TRQ1 Zero Point Value Zero point value of torque sensor 1/
      Min.: 0.0000 V
      Max.: 4.9725 V      		 2.3 to 2.7 V Power switch on (READY) and steering wheel not being turned (without load)
      TRQ2 Zero Point Value Zero point value of torque sensor 2/
      Min.: 0.0000 V
      Max.: 4.9725 V      		 2.3 to 2.7 V Power switch on (READY) and steering wheel not being turned (without load)
      Motor Terminal Volt(+) Motor terminal M1 voltage/
      Min.: 0.0 V
      Max.: 25.5 V      		 9 to 16 V Power switch on (READY) and steering wheel being turned to right
      Below 1 V Power switch on (READY) and steering wheel being turned to left
      Motor Terminal Volt(-) Motor terminal M2 voltage/
      Min.: 0.0 V
      Max.: 25.5 V      		 Below 1 V Power switch on (READY) and steering wheel being turned to right
      9 to 16 V Power switch on (READY) and steering wheel being turned to left
      Ready Status Ready status/
      Ready or OFF      		 READY or OFF -
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