Power Steering System (For 2Az-Fe) Freeze Frame Data

Steering. Corolla. Zre142 Aze141
Power Assist Systems. Corolla. Zre142 Aze141

  1. FREEZE FRAME DATA

Power Steering System (For 2Az-Fe) -- Freeze Frame Data



FREEZE FRAME DATA
NOTICE:
  1. 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.
  2. 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
    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
    PIG2 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