Variable Gear Ratio Steering System Data List / Active Test

Steering. Lexus Gs430, Gs300. Uzs190 Grs190
Steering Column. Lexus Gs430, Gs300. Uzs190 Grs190

  1. STEERING CONTROL ECU

Variable Gear Ratio Steering System -- Data List / Active Test


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

STEERING CONTROL ECU

  1. Connect the intelligent tester to the DLC3.

  2. Turn the engine switch on (IG) and turn the intelligent tester on.

  3. Following the display on the tester, select "DATA LIST".

    Item
    		 Measurement Item /
    Range (Display)
    		Normal Condition
    		Diagnostic Note
    Vehicle Speed(Vsc)
    		Vhicle speed (VSC ECU)/
    Min.: 0 km/h, Max.: 255 km/h
    		Actual vehicle speed
    		Speed indicated on speedometer
    Engine ReVolution(Rpm)
    		Engine revolution (rpm)/
    Less 300 or More 300
    		Less than 300 rpm
    More than 300 rpm
    		Engine stopped
    Engine running
    Mtr Power Source Cur.
    		Motor power source actual current/
    Min.: 0 A, Max.: 127.5 A
    		 Less than 1 A
    More than 1 A
    		 When not turning the steering wheel
    When turning the steering wheel
    PIG-Power Source Volt
    		 PIG power source voltage/
    Min.: 0 V, Max.: 25.5 V
    		9 to 16 V
    		Engine switch on (IG) (Engine stopped)
    IG-Power Source Volt
    		IG power source voltage/
    Min.: 0 V, Max.: 25.5 V
    		9 to 16 V
    		Engine switch on (IG) (Engine stopped)
    Terminal Voltage U
    		Terminal voltage U/
    Min.: 0 V, Max.: 25.5 V
    		0 to 16 V
    		Turning the steering wheel changes the value (with the engine running and the VGRS system operating)
    Terminal Voltage V
    		Terminal voltage V/
    Min.: 0 V, Max.: 25.5 V
    		0 to 16 V
    		Turning the steering wheel changes the value (with the engine running and the VGRS system operating)
    Terminal Voltage W
    		Terminal voltage W/
    Min.: 0 V, Max.: 25.5 V
    		0 to 16 V
    		Turning the steering wheel changes the value (with the engine running and the VGRS system operating)
    Lock Motor Output Volt
    		Lock motor output voltage/
    Min.: 0 V, Max.: 25.5 V
    		9 to 16 V
    		Engine switch on (IG) (Engine stopped)
    Thermistor Temperature
    		Thermistor temperature/
    Min.: -50°C, Max.: 205°C
    		-50 to 150°C
    		When the VGRS system operates
    Command Value Duty
    		Command value DUTY for PVM control/
    Min.: 0%, Max.: 100%
    		0 to 100%
    		When the VGRS system operates
    Actuator Lock Duty Val
    		Command value DUTY for actuator lock control/
    Min.: 0%, Max.: 100%
    		Less than 10%
    		Engine switch on (IG)
    Straight Angle Valid Flag(*1)
    		Straight steering angle valid flag/
    VALID or INVALID
    		VALID or INVALID
    		Immediately after connecting the battery terminal
    Actuator Estimate Temp
    		Actuator estimation temperature/
    Min.: -50°C, Max.: 205°C
    		-50 to 150°C
    		When the VGRS system operates
    Motor Overheat Record (*2)
    		Record of continuous overheat preventive control/
    Rec or Unrec
    		Rec or Unrec
    		-
    Motor Lo Power Record (*2)
    		Record of low motor power source voltage/
    Rec or Unrec
    		Rec or Unrec
    		-
    Motor Overload Record (*2)
    		Record of high motor power source voltage/
    Rec or Unrec
    		Rec or Unrec
    		-
    The Number of DTCs
    		The number of DTCs/
    Max.: 0, Min.: 255
    		 0 to 255
    		-
    Test Mode Status
    		Test mode status/
    Normal mode or Test mode
    		Normal mode or Test mode
    		-
    Steering Mode
    		Steering Mode/
    Normal mode or Sports mode
    		Normal mode or Sports mode
    		-
    Elec Angle Position
    		Elecric Angle Psition/
    Min.: 0°, Max.: 360°
    		0 to 360°
    		-
    Resolver Offset(SIN)
    		Resolver Offset(SIN)/
    Min.: 0 V, Max.: 25.5 V
    		0 to 16 V
    		Turning the steering wheel changes the value (with the engine running and the VGRS system operating)
    Resolver Offset(COS)
    		Resolver Offset(COS) /
    Min.: 0 V, Max.: 25.5 V
    		0 to 16 V
    		Turning the steering wheel changes the value (with the engine running and the VGRS system operating)
    Motor Current U
    		Motor Current U/
    Min.: -63 A, Max.: 64.5 A
    		0 to 64.5 A
    		Turning the steering wheel changes the value (with the engine running and the VGRS system operating)
    Motor Current V
    		Motor Current V/
    Min.: -63 A, Max.: 64.5 A
    		0 to 64.5 A
    		Turning the steering wheel changes the value (with the engine running and the VGRS system operating)
    Motor Current W
    		Motor Current W/
    Min.: -63 A, Max.: 64.5 A
    		0 to 64.5 A
    		Turning the steering wheel changes the value (with the engine running and the VGRS system operating)
    Motor Voltage
    		Motor Power Supply Voltage/
    Min.: 0 V, Max.: 51 V
    		9 to 16 V
    		When the VGRS system operates
    Steering Pos1
    		Steering Position1/
    Min.: -2047 deg, Max.: 2048.9375 deg
    		-2047 to 2048.9375 deg
    		Turning the steering wheel changes the value
    Steering Pos2
    		Steering Position2/
    Min.: -49150.5 deg, Max.: 49152 deg
    		-49150.5 to 49152 deg
    		Turning the steering wheel changes the value
    Actuator Position
    		Actuator Position/
    Min.: -2047 deg, Max.: 2048.9375 deg
    		-2047 to 2048.9375 deg
    		Turning the steering wheel changes the value (with the engine running and the VGRS warning light off)
    Steering Angle Velocity
    		Steering Wheel Angle Velocity/
    Min.: -2047 deg/sec., Max.: 2048.9375 deg/sec.
    		-2047 to 2048.9375 deg/sec.
    		Turning the steering wheel changes the value (with the engine running and the VGRS warning light off)
    Actuator Target Angle1
    		Actuator Target Angle1/
    Min.: -2047 deg, Max.: 2048.9375 deg
    		-2047 to 2048.9375 deg
    		 When the VGRS system operates
    Actuator Target Angle2
    		Actuator Target Angle2/
    Min.: -2047 deg, Max.: 2048.9375 deg
    		-2047 to 2048.9375 deg
    		When the VGRS system operates
    Actuator ReVolution Spd
    		Actuator Revolution Speed/
    Min.: -2047 deg, Max.: 2048.9375 deg
    		-2047 to 2048.9375 deg
    		When the VGRS system operates
    Actuator Deviation Ang
    		Actuator Deviation Angle/
    Min.: -32 rad, Max.: 32 rad
    		-32 to 32 rad
    		When the VGRS system operates
    Mode State
    		Mode State/
    00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 0A, 0B, 0C, 0D, 0E, 0F, 10 00, 01, 02, 03, 04, 06, 07, 08, 09, 0A, 0B, 0C, 0D, 0E, 0F, 10
    		00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 0A, 0B, 0C, 0D, 0E, 0F, 10 00, 01, 02, 03, 04, 06, 07, 08, 09, 0A, 0B, 0C, 0D, 0E, 0F or 10
    		-
    Over Current Counter
    		Over-electric current counter/
    Min.: 0 time, Max.: 255 times
    		0 to 255 times
    		-

    NOTICE:
    *1: This data must be "VALID" before proceeding with any steering adjustment. If "INVALID" is displayed, perform steering angle sensor initialization procedure. Alternatively, if the steering actuator or steering control ECU has been replaced, perform VGRS system calibration (steering angle adjustment).
    HINT:
    *2: If "Rec" is displayed, enter the VGRS menu on the intelligent tester, select record clearance, and follow the prompts to set to "Unrec".