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Home › Subaru › 2020 › BRZ tS › Repair and Diagnosis › Steering › Steering Control Systems › Power Steering System (Diagnostics) › Power Steering System › Data Monitor

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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