Steering. Corolla. Zre142 Aze141
Power Assist Systems. Corolla. Zre142 Aze141
Power Steering System (For 2Zr-Fe) -- Data List / Active Test |
| DATA LIST |
- HINT:
- Using the 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.
Warm up the engine.
Turn the ignition switch off.
Connect the Techstream to the DLC3.
Turn the ignition switch on (IG).
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 |
| Meter Vehicle Velocity | Vehicle speed from meter/ Min.: 0 km/h (mph) Max.: 300 km/h (186.4 mph) | 0 km/h (0 mph) | Vehicle stopped |
| No significant fluctuation | Vehicle driven at constant speed | ||
| Engine Revolution | Engine revolution/ Min.: 0 rpm Max.: 12800 rpm | No significant fluctuation | Engine is 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 | Engine running, power steering is in operation |
| Command Value Current | Requested current to motor/ Min.: -327.68 A Max.: 327.67 A | Value changes in proportion to steering effort | Engine running, power steering is in operation |
| Thermistor Temperature | ECU substrate temperature/ Min.: -40°C (-40°F) Max.: 150°C (302°F) | -40 to 150°C (-40 to 302°F) | - |
| PIG Power Supply | Power source voltage to activate motor/ Min.: 0 V Max.: 20.1531 V | 11 to 14 V | Ignition switch on (IG) |
| IG Power Supply | ECU power source voltage/ Min.: 0 V Max.: 20.1531 V | 11 to 14 V | Ignition switch on (IG) |
| Steering Wheel Torque | Steering wheel torque/ Min.: -327.68 Nm Max.: 7 Nm | Value changes in proportion to steering effort | Ignition switch on (IG) and power steering is in operation |
| Torque Sensor 1 Output | Torque sensor 1 output value/ Min.: 0 V Max.: 5 V | 2.3 to 2.7 V | Engine running, steering wheel not turned (without load) |
| 2.5 to 3.8 V | Engine running, steering wheel turned to right with vehicle stopped | ||
| 1.2 to 2.5 V | Engine running, steering wheel turned to left with vehicle stopped | ||
| Torque Sensor 2 Output | Torque sensor 2 output value/ Min.: 0 V Max.: 5 V | 2.3 to 2.7 V | Engine running, steering wheel not turned (without load) |
| 1.2 to 2.5 V | Engine running, steering wheel turned to right with vehicle stopped | ||
| 2.5 to 3.8 V | Engine running, steering wheel turned to left with vehicle stopped | ||
| TRQ1 Zero Point Value | Zero point value of torque sensor 1/ Min.: 0 V Max.: 5 V | 2.3 to 2.7 V | Engine running, steering wheel not turned (without load) |
| TRQ2 Zero Point Value | Zero point value of torque sensor 2/ Min.: 0 V Max.: 5 V | 2.3 to 2.7 V | Engine running, steering wheel not turned (without load) |
| Motor Terminal Volt(+) | Motor terminal M1 voltage/ Min.: 0 V Max.: 25.5 V | 11 to 14 V | Engine running, steering wheel turned to right |
| Below 1 V | Engine running, steering wheel turned to left | ||
| Motor Terminal Volt(-) | Motor terminal M2 voltage/ Min.: 0 V Max.: 25.5 V | Below 1 V | Engine running, steering wheel turned to right |
| 11 to 14 V | Engine running, steering wheel turned to left | ||
| IG ON/OFF Times | Number of times ignition switch turned to the ON position after DTC detection/ Min.: 0 time Max.: 65535 times | - | This value indicate 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 | - |
| Motor Lo Power Record | PIG power source voltage drop record/ Unrec or Rec | Unrec | - |
| Spd Sig Invalid Record | Vehicle speed signal invalid record/ Unrec or Rec | Unrec | - |
| The Number of DTCs | Number of detected DTCs when freeze frame data stored/ Min.: 0 Max.: 255 | 0 to 255 | - |