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Home >> Subaru >> 2020 >> BRZ Limited, Automatic Trans >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Power Steering System (Diagnostics) >> Power Steering System >> Data Monitor
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Data Monitor

  1. Data monitor list
    1. Turn the ignition switch to OFF.
    2. Connect the SSM4 to the DLC3.
    3. Turn the ignition to IG ON and select [Data monitor] on the SSM4 display screen to check the data monitor.

    SSM4 screen: [Power Steering] →[Select Function] →[Data monitor]

    Item name Description/display range Normal value Remarks
    [Vehicle Speed] Indicates the vehicle speed input from the skid control computer.
    Display range: 0.0 to 300.0km/h    		 0km/h: When stopped -
    No substantial fluctuations present: When cruising -
    [Engine Speed] Indicates the engine speed.
    Display range: 0 to 12800rpm    		 No substantial fluctuations present: Engine speed is constant -
    [Motor Current] Indicates the current flowing to the motor.
    Display range: -327.68 to 327.67A    		 Changes in proportion to the steering force: During engine start, steering operation Left turn (+) Right turn (-)
    [Command Value Current] Indicates the requirement for the current flowing to the motor.
    Display range: -327.68 to 327.67A    		 Changes in proportion to the steering force: During engine start, steering operation Left turn (+) Right turn (-)
    [Steering Angle Velocity] Indicates the angular speed of steering operation.
    Display range: -32768 to 32767deg/s    		 Changes in proportion to the steering speed: During engine start, steering operation Left turn (+) Right turn (-)
    [Thermistor Temperature] Indicates the ECM board temperature.
    Display range: -50.0 to 150.0°C    		 - -
    [PIG-Power Source Volt] Indicates the power supply voltage to drive the motor.
    Display range: 0.0000 to 20.1531V    		 9 to 16V: Always -
    [Ignition Power Supply Voltage] Indicates the ECM power supply state.
    Display range: 0.0000 to 20.1531V    		 9 to 16V: IG ON -
    [Steering Wheel Torque] Indicates the steering torque.
    Display range: -7.00 to 7.00Nm    		 Changes in proportion to the steering force: During engine start, steering operation Left turn (+) Right turn (-)
    [Motor Rotation Angle] Indicates the motor rotation angle.
    Display range: 0.000 to 360.000deg    		 Varies between 0 and 360 deg: During engine start, steering operation -
    [Motor voltage (Command Value 2)] Indicates the requirement for the current flowing to the motor.
    Display range: -327.68 to 327.67A    		 Changes in proportion to the steering force: During engine start, steering operation -
    [PIG2 Voltage] Indicates the boost voltage after the coil.
    Display range: 0.000 to 98.000V    		 Approx. 27 V: During engine start, steering non-operation -
    Varies within 16 - 35 V: During engine start, steering operation -
    [Motor Voltage] Indicates the motor power supply voltage.
    Display range: 0.000 to 98.000V    		 Approx. 27 V: During engine start, steering non-operation -
    Varies within 4 - 35 V: During engine start, steering operation -
    [Motor Terminal Volt(U)] Indicates the motor U terminal voltage.
    Display range: 0.000 to 98.000V    		 Varies within 4 - 35 V: During engine start, steering operation -
    [Motor Terminal Volt(V)] Indicates the motor V terminal voltage.
    Display range: 0.000 to 98.000V    		 Varies within 4 - 35 V: During engine start, steering operation -
    [Motor Terminal Volt(W)] Indicates the motor W terminal voltage.
    Display range: 0.000 to 98.000V    		 Varies within 4 - 35 V: During engine start, steering operation -
    [Torque Sensor 1 Output] Indicates the torque sensor 1 output.
    Display range: 0.0000 to 5.0000V    		 2.3 to 2.7V: During engine start, no steering load (neutral position) -
    2.3 to 3.8V: During engine start, steering to the right -
    1.2 to 2.7V: During engine start, steering to the left -
    [Torque Sensor 2 Output] Indicates the torque sensor 2 output.
    Display range: 0.0000 to 5.0000V    		 2.3 to 2.7V: During engine start, no steering load (neutral position) -
    1.2 to 2.7V: During engine start, steering to the right -
    2.3 to 3.8V: During engine start, steering to the left -
    [TRQ1 Zero Point Value] Indicates the torque sensor 1 output value at the zero point.
    Display range: 0.0000 to 5.0000V    		 - -
    [TRQ2 Zero Point Value] Indicates the torque sensor 2 output value at the zero point.
    Display range: 0.0000 to 5.0000V    		 - -
    [IG ON/OFF Times] Indicates the number of times the ignition is turned to IG ON after the diagnosis code is detected.
    Display range: 0 to 65535    		 - -
    [Heating prevention control history] Indicates the presence of an overheat protection control history.
    Display contents: No/Yes    		 - -
    [Motor Lo Power Record] Indicates the presence of a PIG power supply voltage drop history.
    Display contents: No/Yes    		 - -
    [Engine speed (RDY) signal loss history] Indicates the presence of an engine speed signal interruption history.
    Display contents: No/Yes    		 - -
    [Spd Sig Invalid Record] Indicates the presence of a vehicle speed signal unavailability history.
    Display contents: No/Yes    		 - -
    [Battery Voltage Lo Record] Indicates the number of battery voltage drop instances.
    Display contents: 0 - 65535 times    		 - -
    [Confirmation of resolver correction completion] Indicates the resolver calibration completion state.
    Display contents: Calibration completed/Calibration not completed    		 - -
    [Confirmation of torque 0 point correction completion] Indicates the torque zero point calibration completion state.
    Display contents: Calibration completed/Calibration not completed    		 - -
    [Number of Diagnostic Code(s):] Indicates the number of stored diagnosis codes.
    Display range: 0 to 255    		 - -
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