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Home >> Subaru >> 2020 >> WRX Base >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Power Steering System (Diagnostics) >> Subaru Select Monitor >> Operation >> Read Current Data
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Read Current Data

  1. On «Start» display, select «Diagnosis».
  2. On «Vehicle selection» display, input the vehicle information and select «Confirmed».
  3. On «Main Menu» display, select «Each System».
  4. On «Select System» display, select «Power Steering».
  5. On «Select Function» display, select «Data Monitor».
Display Contents to be displayed Range Unit
Torque sensor main output Main torque sensor output voltage is displayed. 0 - 5 V
Torque sensor sub output Sub torque sensor output voltage is displayed. 0 - 5 V
Vehicle Speed Vehicle speed is displayed. (CAN communication data) 0 - 255 km/h
Engine Speed Engine speed is displayed. (CAN communication data) 0 - 12750 RPM
CU Sensing Current(q) The current flowing to the motor relay is displayed. -128 - 127 A
3-phase motor current (U-phase) The U phase actual current value as calculated by the microcomputer from the torque sensor input is displayed. -128 - 127 A
3-phase motor current (V-phase) The V phase actual current value as calculated by the microcomputer from the torque sensor input is displayed. -128 - 127 A
Motor angular speed Data from the motor rotation angle sensor is displayed. -4096 - 4064 RPM
CU Temperature The thermistor temperature of the steering control module is displayed. -50 - 205 °C
Power supply voltage Battery voltage is displayed. 0 - 25.5 V
Torque sensor power supply voltage The power supply voltage output to the torque sensor is displayed. 0 - 10.2 V
IG Voltage The power supply voltage supplied to the ECM is displayed. 0 - 25.5 V
CAN Bus Status Either Active/Passive/Bus Off is displayed. - -
EPS operating condition Either Normal/Assist Stop/Assist Limitation is displayed. - -
CU Target current(q) The motor target current value required for assist is displayed. -128 - 127 A
Steering angle Steering angle of steering wheel is displayed. -640 - 635 deg
Overheating protection intervention history Number of interventions to the overheat protection control (assist limitation for protecting the power steering from overheating)*1 0 - 250 times
IG Count after ECU Overheat Protection(latest) Number of times the ignition switch is ON from the intervention to overheat protection control (most recent) until now*2 0 - 65000 times
IG Count after ECU Overheat Protection(Previous) Number of times the ignition switch is ON from the intervention to overheat protection control (previous) until now*2 0 - 65000 times
IG Count after ECU Overheat Protection(Before Previous) Number of times the ignition switch is ON from the intervention to overheat protection control (before previous) until now*2 0 - 65000 times
Assist limited(Abnormal voltage) Number of interventions by the assist limit control due to voltage malfunction*1 0 - 250 times
IGN-OFF Intervention Count while Running Number of times the ignition switch is turned OFF while driving*1 0 - 250 times
Motor Current The current flowing to the motor relay is displayed. -128 - 127 Arms
Assist Map Number Either Not Selected/MAP1/MAP2/MAP3 is displayed. - -
Assist Map Number Discord Recorded number of the assist MAP number discordance 0 - 250 times
NOTE:
  • *1 When the value exceeds the maximum of 250 times, 250 is displayed.
  • *2 When there is no intervention of the overheating protection control, "65535" is displayed. If an error such as control unit memory error, etc. occurs, "65534" is displayed.
  • For detailed operation procedures, refer to "Application help".