Toyota Yaris: Power Steering System / Data List / Active Test

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Steering / Power Assist Systems / Power Steering System / Data List / Active Test

DATA LIST / ACTIVE TEST

DATA LIST

HINT:

Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

NOTICE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

(a) Read the Data List according to the display on the GTS.

Chassis > EMPS > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Total Distance Traveled

Total distance traveled

Min.: 0, Max.: 16777215

-

-

Total Distance Traveled - Unit

Total Distance Traveled unit

km / mile

-

-

Vehicle Speed

Vehicle speed from speedometer

Min.: 0.0 km/h (0.0 MPH)

Max.: 300.0 km/h (186.4 MPH)

  • 0 km/h (0 MPH): Engine running and vehicle stopped
  • No significant fluctuation: Engine running and vehicle driven at a constant speed

-

Engine Revolution

Engine speed

Min.: 0 rpm

Max.: 12800 rpm

No significant fluctuation

Engine running at a constant speed

Ready Status

Ready status

OFF or ON

-

*1

Battery Voltage

Auxiliary battery voltage

Min.: 0.00 V

Max.: 25.00 V

11 to 14 V

-

Steering Wheel Torque

Steering wheel torque

Min.: -25.000 Nm

Max.: 25.001 Nm

Value changes in proportion to steering effort

- The value increases when turning left and decreases when turning right

Engine running and steering wheel being turned

Steering Angle Velocity

Steering angle speed

Min.: -32768 deg/s

Max.: 32767 deg/s

Value changes in proportion to steering speed

- The value increases when turning left and decreases when turning right

Engine running and steering wheel being turned

Steering Angle

Steering angle

Min.: -3072.0 deg

Max.: 3070.5 deg

-

-

Status of Vehicle Power (IGP PT2)

State of IGP power source(PT2)

OFF or ON

OFF: Ignition switch off

ON: Ignition switch ON

-

Status of Vehicle Power (IGP PT1)

State of IGP power source(PT1)

OFF or ON

OFF: Ignition switch off

ON: Ignition switch ON

-

Status of Vehicle Power (IGP PDC)

State of IGP power source(PDC)

OFF or ON

OFF: Ignition switch off

ON: Ignition switch ON

-

Status of Vehicle Power (IGR PDC)

State of IGR power source(PDC)

OFF or ON

OFF: Ignition switch off

ON: Ignition switch ON

-

IG Power Supply

IG power source voltage

Min.: 0.00 V

Max.: 25.00 V

8 to 16 V

Ignition switch ON

PIG Power Supply

PIG power source voltage

Min.: 0.00 V

Max.: 25.00 V

9 to 16 V

Engine running and steering wheel being turned

Thermistor Temperature

ECU substrate temperature

Min.: -50.0°C (-58.0°F)

Max.: 200.0°C (392.0°F)

-50°C to 200°C (-58°F to 392°F)

-

Power Source

Operating state of hybrid system

Operating State or Stopped State

Operating State: Engine running

Stopped State: Engine stopped

-

PS Assist Signal

Status of the record of power steering assist signal

Assist Stop or Under an Assist

OFF: Assist stop

ON: Under an assist

-

Torque Sensor 1 Output

Torque sensor 1 output value

Min.: -25.000 Nm

Max.: 25.000 Nm

-

-

Torque Sensor 2 Output

Torque sensor 2 output value

Min.: -25.000 Nm

Max.: 25.000 Nm

-

-

Torque Sensor 3 Output

Torque sensor 3 output value

Min.: -25.000 Nm

Max.: 25.000 Nm

-

-

Torque Sensor 4 Output

Torque sensor 4 output value

Min.: -25.000 Nm

Max.: 25.000 Nm

-

-

Torque Sensor 1 Zero Point Value

Torque sensor 1A zero point compensation value

-

-

Although the item is displayed on the GTS, it is not applicable to the vehicle.

Torque Sensor 2 Zero Point Value

Torque sensor 1B zero point compensation value

-

-

Although the item is displayed on the GTS, it is not applicable to the vehicle.

Torque Sensor 3 Zero Point Value

Torque sensor 2A zero point compensation value

-

-

Although the item is displayed on the GTS, it is not applicable to the vehicle.

Torque Sensor 4 Zero Point Value

Torque sensor 2B zero point compensation value

-

-

Although the item is displayed on the GTS, it is not applicable to the vehicle.

Motor 1 U Phase Current

Motor 1 terminal current (U phase)

Min.: -327.68 A

Max.: 327.67 A

Value changes in proportion to steering effort

Engine running and steering wheel being turned

Motor 1 V Phase Current

Motor 1 terminal current (V phase)

Min.: -327.68 A

Max.: 327.67 A

Value changes in proportion to steering effort

Engine running and steering wheel being turned

Motor 1 W Phase Current

Motor 1 terminal voltage (W phase)

Min.: -327.68 A

Max.: 327.67 A

Value changes in proportion to steering effort

Engine running and steering wheel being turned

Motor 1 U Phase Duty

Motor 1 U phase duty

Min.: 0.00%

Max.: 100.00%

-

-

Motor 1 V Phase Duty

Motor 1 V phase duty

Min.: 0.00%

Max.: 100.00%

-

-

Motor 1 W Phase Duty

Motor 1 W phase duty

Min.: 0.00%

Max.: 100.00%

-

-

Motor 1 Power Supply

Power supply voltage to active motor 1

Min.: 0.00 V

Max.: 25.00 V

9 to 16 V

Engine running and steering wheel being turned

Motor 2 U Phase Current

Motor 2 terminal current (U phase)

Min.: -327.68 A

Max.: 327.67 A

Value changes in proportion to steering effort

Engine running and steering wheel being turned

Motor 2 V Phase Current

Motor 2 terminal current (V phase)

Min.: -327.68 A

Max.: 327.67 A

Value changes in proportion to steering effort

Engine running and steering wheel being turned

Motor 2 W Phase Current

Motor 2 terminal current (W phase)

Min.: -327.68 A

Max.: 327.67 A

Value changes in proportion to steering effort

Engine running and steering wheel being turned

Motor 2 U Phase Duty

Motor 2 U phase duty

Min.: 0.00%

Max.: 100.00%

-

-

Motor 2 V Phase Duty

Motor 2 V phase duty

Min.: 0.00%

Max.: 100.00%

-

-

Motor 2 W Phase Duty

Motor 2 W phase duty

Min.: 0.00%

Max.: 100.00%

-

-

Motor 2 Power Supply

Power supply voltage to active motor 2

Min.: 0.00 V

Max.: 25.00 V

-

-

Motor Rotation Angle Sensor 1 Sin Voltage

Rotation angle sensor Sin1 output voltage used for rotation angle calculation

Min.: 0.00 V

Max.: 5.00 V

-

-

Motor Rotation Angle Sensor 1 Cos Voltage

Rotation angle sensor Cos1 output voltage used for rotation angle calculation

Min.: 0.00 V

Max.: 5.00 V

-

-

Motor Rotation Angle Sensor 2 Sin Voltage

Rotation angle sensor Sin2 output voltage used for rotation angle calculation

Min.: 0.00 V

Max.: 5.00 V

-

-

Motor Rotation Angle Sensor 2 Cos Voltage

Rotation angle sensor Cos2 output voltage used for rotation angle calculation

Min.: 0.00 V

Max.: 5.00 V

-

-

Motor Rotation Angle Sensor 3 Sin Voltage

Rotation angle sensor Sin3 output voltage used for rotation angle calculation

Min.: 0.00 V

Max.: 5.00 V

-

-

Motor Rotation Angle Sensor 3 Cos Voltage

Rotation angle sensor Cos3 output voltage used for rotation angle calculation

Min.: 0.00 V

Max.: 5.00 V

-

-

Motor Actual Current (Q Axis)

Detected current flow to motor (detected current of axis q)

Min.: -327.68 A

Max.: 327.67 A

-

-

Command Value Current (Q Axis)

Target current flow to motor (requested current of axis q)

Min.: -327.68 A

Max.: 327.67 A

-

-

Motor Actual Current 2 (D Axis)

Detected current flow to motor (detected current of axis d)

Min.: -327.68 A

Max.: 327.67 A

-

-

Command Value Current 2 (D Axis)

Target current flow to motor (requested current of axis d)

Min.: -327.68 A

Max.: 327.67 A

-

-

Motor Rotation Angle

Motor rotation angle (detected by rotation sensor)

Min.: 0.0 deg

Max.: 360.1 deg

-

-

Final Motor Current limited (Q Axis)

Final motor current set limit (request current of axis q)

Min.: 0.00 A

Max.: 327.67 A

-

-

Steering Angle Sensor Signal State

State of steering angle sensor signal

Usable, Unlearned, Sensor Fault or Communication Fault

-

-

CAN Vehicle Speed (Speed Sensor RR)

Speed sensor RR value sent via CAN

Min.: 0 km/h (0 MPH)

Max.: 255 km/h (158 MPH)

  • 0 km/h (0 MPH): Engine running and vehicle stopped
  • No significant fluctuation: Engine running and vehicle driven at a constant speed

-

CAN Vehicle Speed (Speed Sensor RL)

Speed sensor RL value sent via CAN

Min.: 0 km/h (0 MPH)

Max.: 255 km/h (158 MPH)

  • 0 km/h (0 MPH): Engine running and vehicle stopped
  • No significant fluctuation: Engine running and vehicle driven at a constant speed

-

CAN Vehicle Speed (SP1)

Vehicle speed input value sent via CAN (equal to value indicated on speedometer)

Min.: 0 km/h (0 MPH)

Max.: 300 km/h (186 MPH)

  • 0 km/h (0 MPH): Engine running and vehicle stopped
  • No significant fluctuation: Engine running and vehicle driven at a constant speed

-

CAN Steering Angle Speed (SSAV)

Steering wheel turning speed value sent via CAN

Min.: -32768 deg/s

Max.: 32767 deg/s

-

-

Battery Voltage Drop History

Number of times vehicle auxiliary battery voltage dropped

Min.: 0

Max.: 255

-

-

Engine Revolution Ready Signal Communication Failure History

Vehicle speed input value sent via CAN (equal to value indicated on speedometer)

Min.: 0

Max.: 255

-

-

Steering Angle Sensor Signal Communication Failure History

Number of times steering angle sensor signal was interrupted

Min.: 0

Max.: 255

-

-

Vehicle Speed Signal Invalid History

Number of times steering angle sensor signal was interrupted

Min.: 0

Max.: 255

-

-

Overheat Prevention Control History

Number of times assist limit performed due to estimated temperature of power steering ECU and motor coil

Min.: 0

Max.: 255

-

-

Power Supply Voltage Drop Control History

Number of times assist limit performed due to battery voltage having dropped to 9 V or less

Min.: 0

Max.: 255

-

-

Power Supply Voltage Drop Restraint Control History

Number of times assist limit performed due to battery voltage having dropped to 9.7 V or less

Min.: 0

Max.: 255

-

-

Engine Stall/READY OFF Control History

Number of times assist limit performed due to engine stall (for Gasoline Model) or power switch being turned off (for HV Model)

Min.: 0

Max.: 255

-

-

High Load Continuous Control Number of Times

Number of times assist limit performed to prevent motor from overheating when overloaded due to steering wheel being turned to full lock position for an extended period of time, tire pressing against curbstone, etc.

Min.: 0

Max.: 255

-

-

Vehicle Speed Signal Fault Control History

Number of times assist power set to a value suitable for high-speed driving when driving at high speeds due to an abnormal vehicle speed signal

Min.: 0

Max.: 255

-

-

Load Control History

Number of times electric load limited to ensure stable vehicle power when power steering could not function appropriately or battery voltage was too low to ensure stable power steering

Min.: 0

Max.: 255

-

-

Control State Information

-

-

-

Although the item is displayed on the GTS, it is not applicable to the vehicle.

ASIC State Information

-

-

-

Although the item is displayed on the GTS, it is not applicable to the vehicle.

ECU Overheat Prevention Part

Internal component of ECU for which overheat protection control is performed

No Target Part, Inverter MOS, Power Supply Relay MOS, Custom IC, Choke Coil, H Bridge MOS, Motor Relay MOS, Around Microcomputer or DBC

-

-

ECU Estimate Temperature of Overheat Prevention Part

Estimated temperature of internal component of ECU for which overheat protection control is performed

Min.: -50.0°C (-58.0°F)

Max.: 200.1 °C (392.2 °F)

-

-

Motor Overheat Prevention Part

Internal component of motor for which overheat protection control is performed

No Target Part or Motor

-

-

Motor Estimate Temperature of Overheat Prevention Part

Estimated temperature of internal component of motor for which overheat protection control is performed

Min.: -50.0°C (-58.0°F)

Max.: 200.1 °C (392.2 °F)

-

-

HINT:

  • With the vehicle stopped or driving very slowly, if the steering wheel is turned repeatedly or turned to a lock position and the vehicle is driven for an extended period of time, the amount of power assist is decreased to prevent overheating of the motor and ECU. If this occurs, do not turn the steering wheel for approximately 10 minutes with engine running to improve power assist.
  • If the auxiliary battery is not sufficiently charged or the voltage decreases temporarily, the amount of power assist is reduced and the EPS warning light comes on. In such cases, the amount of power assist returns to normal when the auxiliary battery voltage recovers.

    Fail-safe Chart

    FAIL-SAFE CHART If a problem occurs in the power steering system, the power steering assist will be stopped or the amount of power assist will be decreased to protect the system...

    Diagnostic Trouble Code Chart

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    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: Supply Voltage Circuit Circuit Voltage Above Threshold (C123A17)


    DESCRIPTION The power steering ECU assembly distinguishes the ignition switch status as ON or off through the IG power source circuit. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note C123A17 Supply Voltage Circuit Circuit Voltage Above Threshold IG voltage is 18...

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