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HOMESERVICE MANUALSTOYOTA2009COROLLA S, 1.8 U, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)STEERINGMANUAL STEERINGPOWER ASSIST STEERING SYSTEMSPOWER STEERING SYSTEM (FOR 2AZ-FE)FREEZE FRAME DATA
2009 Toyota Corolla S, 1.8 U, Standard

Freeze Frame Data

2009 Toyota Corolla S, 1.8 U, StandardSECTION 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 ignition switch on (IG) and park the vehicle on level ground. Check the freeze frame data by using the Techstream.
    1. Turn the ignition switch off.
    2. Connect the Techstream to the DLC3.
    3. Turn the ignition switch on (IG).
    4. Turn the Techstream on.
    5. Check the freeze frame data on the Techstream.

    EMPS 

    EMPS REFERENCE CHART

    Tester Display Item Description/Range (Display) Inspection Condition Reference Value
    Meter Vehicle Velocity Vehicle speed from meter/
    Min.: 0 km/h (0 mph)
    Max.: 300 km/h (186.4 mph)    		 Vehicle stopped 0 km/h (0 mph)
    Vehicle driven at a constant speed No significant fluctuation
    Engine Revolution Engine revolution/
    Min.: 0 rpm
    Max.: 12800 rpm    		 Engine is running at a constant speed No significant fluctuation
    Motor Actual Current Amount of current to motor/
    Min.: -327.68 A
    Max.: 327.67 A    		 Power steering is in operation Value changes in proportion to steering effort
    Command Value Current Demanded amount of current to motor/
    Min.: -327.68 A
    Max.: 327.67 A    		 Power steering is in operation Value changes in proportion to steering effort
    Steering Angle Velocity Steering angle speed/
    Min.:-32768 deg/s
    Max.: 32767 deg/s    		 Steering wheel is turned Value changes in proportion to steering effort
    Thermistor Temperature ECU substrate temperature/
    Min.: -40°C (-40°F)
    Max.: 150°C (302°F)    		 Ignition switch on (IG) -
    PIG Power Supply Power source voltage to activate motor/
    Min.: 0 V
    Max.: 20.1531 V    		 Power steering is in operation 11 to 14 V
    IG Power Supply ECU power source voltage/
    Min.: 0 V
    Max.: 20.1531 V    		 Ignition switch on (IG) 11 to 14 V
    Motor Rotation Angle Motor rotation angle/
    Min.: 0 deg
    Max.: 1441.77 deg    		 Power steering is in operation During steering operation, motor rotation angle value changes from 0 to 360°
    Command Val Current 2 Demanded amount of current to motor/
    Min.:-327.68 A
    Max.: 327.67 A    		 Power steering is in operation Value changes in proportion to steering effort
    PIG 2 Voltage Coil rear pressurization voltage/
    Min.: 0 V
    Max.: 45.955 V    		 Ignition switch on (IG) Steering wheel is not turned Approximately 27 V
    Ignition switch on (IG) Steering wheel is turned Value changes within 4 to 35 V range
    Motor Voltage Motor power supply voltage/
    Min.: 0 V
    Max.: 45.955 V    		 Ignition switch on (IG) Steering wheel is not turned Approximately 27 V
    Ignition switch on (IG) Steering wheel is turned Value changes within 4 to 35 V range
    Motor Terminal Volt(U) Motor terminal voltage (U phase)/
    Min.: 0 V
    Max.: 46.667 V    		 Steering wheel is turned Value changes within 4 to 35 V range
    Motor Terminal Volt(V) Motor terminal voltage (V phase)/
    Min.: 0 V
    Max.: 46.667 V    		 Steering wheel is turned Value changes within 4 to 35 V range
    Motor Terminal Volt(W) Motor terminal voltage (W phase)/
    Min.: 0 V
    Max.: 46.667 V    		 Steering wheel is turned Value changes within 4 to 35 V range
    Torque Sensor 1 Output Torque sensor voltage/
    Min.: 0 V
    Max.: 5 V    		 Ignition switch on (IG) Steering wheel not turned (without load) 2.3 to 2.7 V
    Ignition switch on (IG) Steering wheel turned to right with vehicle stopped 2.5 to 3.8 V
    Ignition switch on (IG) Steering wheel turned to left with vehicle stopped 1.2 to 2.5 V
    Torque Sensor 2 Output Torque sensor voltage/
    Min.: 0 V
    Max.: 5 V    		 Ignition switch on (IG) Steering wheel not turned (without load) 2.3 to 2.7 V
    Ignition switch on (IG) Steering wheel turned to right with vehicle stopped 1.2 to 2.5 V
    Ignition switch on (IG) Steering wheel turned to left with vehicle stopped 2.5 to 3.8 V
    TRQ1 Zero Point Value Torque sensor voltage/
    Min.: 0 V
    Max.: 5 V    		 Steering wheel is not turned Values differ depending on vehicle
    TRQ2 Zero Point Value Torque sensor voltage/
    Min.: 0 V
    Max.: 5 V    		 Steering wheel is not turned Values differ depending on vehicle
    PS Assist Signal Power steering assist signal/ ON or OFF No steering load (in neutral position) OFF
    Ignition switch on (IG) Steering wheel is turned ON
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.