Steering. Yaris. Ncp93, 131
Power Assist Systems. Yaris. Ncp93, 131
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.
Turn the ignition switch off.
Connect a Techstream to the DLC3.
Start the engine.
Turn the Techstream on.
Enter the following menus: Chassis / EMPS / Data List.
According to the display on the Techstream, read the "Data List".
| 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" (YARIS_NCP93 RM000001E2J01FX.html).