Electronic Power Steering System Data List / Active Test

Steering. Lexus Is250, Is220D. Gse20 Ale20
Power Steering. Lexus Is250, Is220D. Gse20 Ale20

  1. DATA LIST

Electronic Power Steering System -- Data List / Active Test



DATA LIST
HINT:
By accessing the Data List displayed on the intelligent tester, values of switches, sensors and other related parts can be checked without removing any parts. Reading the Data List is the first step of troubleshooting and is one method to shorten labor time.

  1. Connect the intelligent tester to the DLC3.

  2. Turn the engine switch on (IG).

  3. Operate the intelligent tester according to the steps on the display and select the Data List.

    Item
    		Item Description/Range (Display)
    		Inspection Condition
    		Reference Value
    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
    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
    Engine Speed
    		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 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
    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
    Str Angl Vel
    		Steering angle speed/
    Min.: -4,096 deg/sec, Max.: 4,064 deg/sec
    		Steering wheel is turned
    		Value changes in proportion to steering speed
    Thermistor Temp
    		ECU substrate temperature/
    Min.: -50°C, Max.: 205°C
    		Engine switch on (IG)
    		-
    PIG Supply
    		Power source voltage to activate motor/
    Min.: 0 V, Max.: 25.5 V
    		Power steering is in operation
    		10 to 14 V
    IG Supply
    		ECU power source voltage/
    Min.: 0 V, Max.: 25.5 V
    		Engine switch on (IG)
    		10 to 14 V
    Trq1 Zero Val
    		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 Val
    		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 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 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
    Command Value 2
    		Amount of current demanded by motor 2/
    Min.: -128 A, Max.: 127 A
    		-
    		-
    PIG2 Voltage
    		Motor drive voltage after pressurization
    		Power steering is in operation
    		27 to 34 V
    Motor Voltage
    		Motor power source voltage/
    Min.: 0 V, Max.: 64 V
    		Power steering is in operation
    		27 to 34 V
    Mtr Terminal (U)
    		Motor terminal voltage (U phase)/
    Min.: 0 V, Max.: 64 V
    		Power steering is in operation
    		0 to 34 V
    Mtr Terminal (V)
    		Motor terminal voltage (V phase)/
    Min.: 0 V, Max.: 64 V
    		Power steering is in operation
    		0 to 34 V
    Mtr Terminal (W)
    		Motor terminal voltage (W phase)/
    Min.: 0 V, Max.: 64 V
    		Power steering is in operation
    		0 to 34 V
    Str Sens Sig
    		Steering angle sensor signal status/
    OK or NG
    		-
    		-
    Mtr Overheat
    		Continuous overheat prevention control record/
    REC or UNREC
    		-
    		-
    Mtr Low Power
    		PIG power source voltage drop record/
    REC or UNREC
    		-
    		-
    Eng Rev Inter
    		Record of engine revolution signal interruption/
    REC or UNREC
    		-
    		-
    Str Angl Inter
    		Record of steering angle sensor signal interruption/
    REC or UNREC
    		-
    		-
    Spd Sig Invalid
    		Record of vehicle speed signal invalid/
    REC or UNREC
    		-
    		-
    IG ON/OFF Times
    		Number of times IG switch is turned on after DTC detection/
    Min.: 0 time, Max.: 255 times
    		-
    		-
    DTC
    		Number of detected DTCs when freeze frame data is stored/
    Min.: 0, Max.: 255
    		-
    		-
    Battery Voltage
    		BATTERY VOLTAGE
    Min.: 0V, Max.: 25.5
    		-
    		10 to 14 V
    PS Assist Sig
    		Power steering assist signal/
    ON or OFF
    		Engine switch on (IG)
    		-