POWER ASSIST SYSTEMS  POWER STEERING SYSTEM  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.

Turn the ignition switch off.


b.

Connect the GTS to the DLC3.


c.

Turn the ignition switch to ON.


d.

Turn the GTS on.


e.

Enter the following menus: Chassis / EMPS / Data List.


f.

According to the display on the GTS, read the "Data List".



Chassis > EMPS > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Meter Vehicle Velocity 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 constant speed


-
Engine Revolution Engine speed Min.: 0 rpm
Max.: 12800 rpm 		No significant fluctuation Engine running at a constant speed
Motor Actual Current Current to motor Min.: -327.68 A
Max.: 327.67 A 		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
Command Value Current Requested current to motor Min.: -327.68 A
Max.: 327.67 A 		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
Thermistor Temperature ECU substrate temperature Min.: -50.0°C (-58.0°F)
Max.: 150.0°C (302.0°F) 		-50 to 150°C (-58 to 302°F) -
PIG Power Supply Power source voltage to active motor Min.: 0.0000 V
Max.: 20.1531 V 		9 to 16 V Always
IG Power Supply IG power source voltage Min.: 0.0000 V
Max.: 20.1531 V 		8 to 16 V Ignition switch ON
Steering Wheel Torque Steering wheel torque Min.: -327.68 Nm
Max.: 7.00 Nm 		Value changes in proportion to steering effort Engine running and steering wheel being turned
Torque Sensor 1 Output Torque sensor 1 output value Min.: 0.0000 V
Max.: 4.9725 V
·

2.3 to 2.7 V: Engine running and steering wheel not being turned (without load)

·

2.5 to 3.8 V: Engine running and steering wheel being turned to right with vehicle stopped

·

1.2 to 2.5 V: Engine running and steering wheel being turned to left with vehicle stopped


-
Torque Sensor 2 Output Torque sensor 2 output value Min.: 0.0000 V
Max.: 4.9725 V
·

2.3 to 2.7 V: Engine running and steering wheel not being turned (without load)

·

1.2 to 2.5 V: Engine running and steering wheel being turned to right with vehicle stopped

·

2.5 to 3.8 V: Engine running and steering wheel being turned to left with vehicle stopped


-
TRQ1 Zero Point Value Zero point value of torque sensor 1 Min.: 0.0000 V
Max.: 4.9725 V 		2.3 to 2.7 V Engine running and steering wheel not being turned (without load)
TRQ2 Zero Point Value Zero point value of torque sensor 2 Min.: 0.0000 V
Max.: 4.9725 V 		2.3 to 2.7 V Engine running and steering wheel not being turned (without load)
Motor Terminal Volt(+) Motor terminal M1 voltage Min.: 0.0 V
Max.: 25.5 V
·

9 to 16 V: Engine running and steering wheel being turned to right

·

6 to 8 V: Engine running and steering wheel being turned to left


-
Motor Terminal Volt(-) Motor terminal M2 voltage Min.: 0.0 V
Max.: 25.5 V
·

6 to 8 V: Engine running and steering wheel being turned to right

·

9 to 16 V: Engine running and steering wheel being turned to left


-
IG ON/OFF Times Number of times of ignition switch on/off after fail detection Min.: 0 times
Max.: 65535 times 		- This value indicates the number of times of IG on/off after the latest DTC detection.
Motor Overheat Record Continuous overheat prevention control record Unrec or Rec Unrec Unrec: Unrecorded
Rec: Recorded
Motor Lo Power Record PIG power source voltage drop record Unrec or Rec Unrec Unrec: Unrecorded
Rec: Recorded
Eng Rev Inter Record Record of ignition switch ON signal interruption Unrec or Rec Unrec Unrec: Unrecorded
Rec: Recorded
Spd Sig Invalid Record Vehicle speed signal invalid record Unrec or Rec Unrec Unrec: Unrecorded
Rec: Recorded
Battery Voltage Lo Record Battery voltage reduction history Min.: 0 times
Max.: 65535 times 		0 to 65535 times -
The Number of DTCs Number of detected DTCs when freeze frame data stored Min.: 0
Max.: 255 		0 to 255 -
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, idle the engine and do not turn the steering wheel for approximately 10 minutes to improve power assist a little.

·

If the 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 battery voltage recovers.