POWER STEERING SYSTEM (for Sedan) > DATA LIST / ACTIVE TEST



DATA LIST

HINT:
Using a Techstream 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.
  1. Turn the ignition switch off.

  2. Connect a Techstream to the DLC3.

  3. Start the engine.

  4. Turn the Techstream on.

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

  6. According to the display on the Techstream, read the "Data List".


EMPS: 
Tester Display
Measurement Item/Range
Normal Condition
Diagnostic Note
Torque Sensor 1 Output
Torque sensor 1 output value:
Minimum: 0.0000 V, Maximum: 5.0000 V
2.3 to 2.7 V: Steering wheel not turned (without load)
Read value with vehicle stopped
2.5 to 4.7 V: Steering wheel turned to right
Read value with vehicle stopped
0.3 to 2.5 V: Steering wheel turned to left
Read value with vehicle stopped
Torque Sensor 2 Output
Torque sensor 2 output value:
Minimum: 0.0000 V, Maximum: 5.0000 V
2.3 to 2.7 V: Steering wheel not turned (without load)
Read value with vehicle stopped
2.5 to 4.7 V: Steering wheel turned to right
Read value with vehicle stopped
0.3 to 2.5 V: Steering wheel turned to left
Read value with vehicle stopped
Torque Sensor 3 Output
Torque value for assist control:
Minimum: 0.0000 V, Maximum: 5.0000 V
2.3 to 2.7 V: Steering wheel not turned (without load)
Read value with vehicle stopped
2.5 to 4.7 V: Steering wheel turned to right
Read value with vehicle stopped
0.3 to 2.5 V: Steering wheel turned to left
Read value with vehicle stopped
Meter Vehicle Velocity
Vehicle speed from meter:
Minimum: 0 mph (km/h), Maximum: 158.5 mph (255 km/h)
0 km/h (mph): Vehicle stopped
-
Vehicle driven at constant speed
No significant fluctuation
Engine Revolution
Engine revolution: Minimum: 0 rpm, Maximum 8192rpm
Engine running at constant speed
No significant fluctuation
Motor Actual Current
Current to motor:
Minimum: -128 A, Maximum: 127 A
Value changes in proportion to steering effort
-
Command Value Current
Requested current to motor:
Minimum: -128 A, Maximum: 127 A
Value changes in proportion to steering effort
-
Thermistor Temperature
ECU substrate temperature:
Minimum: -50 °C, Maximum: 205 °C
-
-
PIG Power Supply
Power source voltage to activate motor:
Minimum: 0.0 V, Maximum: 25.5 V
11 to 14 V: Always
-
IG Power Supply
ECU power source voltage:
Minimum: 0.0 V, Maximum: 25.5 V
11 to 14 V: Ignition switch ON
-
TRQ1 Zero Point Value
Zero point value of torque sensor 1:
Minimum: 0.0000 V, Maximum: 5.0000 V
2.3 to 2.7 V: Steering wheel not turned (without load)
-
TRQ2 Zero Point Value
Zero point value of torque sensor 2:
Minimum: 0.0000 V, Maximum: 5.0000 V
2.3 to 2.7 V: Steering wheel not turned (without load)
-
TRQ3 Zero Point Value
Zero point value of torque sensor for assist control:
Minimum: 0.0000 V, Maximum: 5.0000 V
2.3 to 2.7 V: Steering wheel not turned (without load)
-
Motor Terminal Volt (+)
Motor terminal M1 voltage:
Minimum: 0.0 V, Maximum: 25.5 V
Below 1 V: Steering wheel turned to right
-
11 to 14 V: Steering wheel turned to left
-
Motor Terminal Volt (-)
Motor terminal M2 voltage:
Minimum: 0.0 V, Maximum: 25.5 V
11 to 14 V: Steering wheel turned to left
-
Below 1 V: Steering wheel turned to right
-
Motor Overheat Record
Continuous overheat prevention control record: Unrec or Rec
Unrec
-
Motor Lo Power Record
PIG power source voltage drop record: Unrec or Rec
Unrec
-
Battery Voltage Lo Record
Battery voltage reduction history:
Minimum: 0 times, Maximum: 255 times
0 times
*
Control Mode
Codes indicating DTC detection timing during ECU control displayed in hexadecimal
-
-
IG ON/OFF Times
Number of times ignition switch turned on after DTC detection:
Minimum: 0 time, Maximum: 255 times
-
-
The Number of DTCs
Number of detected DTCs when freeze frame data stored:
Minimum: 0 time, Maximum: 255 times
-
-
ECU Identification
ECU identification information
-
-
Test Mode Status
Selected mode:
Normal Mode / Test Mode
-
-

HINT:
*: Inspect the charging system if the display for "Battery Voltage Lo Record" is other than "0" (Click here).