POWER STEERING SYSTEM(for Manual Tilt and Manual Telescopic Steering Column) DATA LIST / ACTIVE TEST


  1. DATA LIST

    Tech Tips

    Using the GTS 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.

    Note

    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.


    1. Turn the power switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG).

    4. Turn the GTS on.

    5. Enter the following menus: Chassis / EMPS / Data List.

    6. According to the display on the GTS, read the Data List.


      Chassis > EMPS > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Meter Vehicle Velocity Vehicle speed from meter

      Min.: 0.0 km/h (0.0 mph)

      Max.: 300.0 km/h (186.4 mph)

      • Power switch on (READY) and vehicle stopped: 0 km/h (0 mph)

      • Power switch on (READY) and vehicle driven at a constant speed: No significant fluctuation

      		 -
      Motor Actual Current Amount of current to motor

      Min.: -327.68 A

      Max.: 327.67 A

      		 Power switch on (READY) and steering wheel being turned: The value rises -
      Command Value Current Requested current to motor

      Min.: -327.68 A

      Max.: 327.67 A

      Power switch on (READY) and steering wheel being turned: Value changes in proportion to steering effort

      -The value increases when turning left and decreases when turning right

      		 -
      Steering Angle Velocity Steering angle speed

      Min.: -32768 deg/s

      Max.: 32767 deg/s

      Power switch on (READY) and steering wheel being turned: Value changes in proportion to steering speed

      -The value increases when turning left and decreases when turning right

      		 -
      Thermistor Temperature ECU substrate temperature

      Min.: -50.0°C (-58.0°F)

      Max.: 150.0°C (302.0°F)

      		 Power switch on (READY): -50°C to 150°C (-58°F to 302°F) -
      PIG Power Supply Power source voltage to active motor

      Min.: 0.0000 V

      Max.: 20.1531 V

      		 Always: 9 to 16 V -
      IG Power Supply IG power source voltage

      Min.: 0.0000 V

      Max.: 20.1531 V

      		 Power switch on (IG): 8 to 16 V -
      Steering Wheel Torque Steering wheel torque

      Min.: -327.68 Nm

      Max.: 7.00 Nm

      Power switch on (READY) and steering wheel being turned: Value changes in proportion to steering effort

      -The value increases when turning left and decreases when turning right

      		 -
      Motor Rotation Angle Motor rotation angle

      Min.: 0.000 deg

      Max.: 1441.770 deg

      		 Power switch on (READY) and steering wheel being turned: During steering operation, motor rotation angle value changes from 0 to 360 deg -
      Motor Voltage Motor power supply voltage

      Min.: 0.000 V

      Max.: 98.000 V

      		 Power switch on (READY) and steering wheel being turned: 9 to 16 V -
      Motor Terminal Volt(U) Motor terminal voltage (A phase)

      Min.: 0.000 V

      Max.: 98.000 V

      		 Power switch on (READY) and steering wheel being turned: Value changes within 4 to 35 V range -
      Motor Terminal Volt(V) Motor terminal voltage (B phase)

      Min.: 0.000 V

      Max.: 98.000 V

      		 Power switch on (READY) and steering wheel being turned: Value changes within 4 to 35 V range -
      Motor Terminal Volt(W) Motor terminal voltage (C phase)

      Min.: 0.000 V

      Max.: 98.000 V

      		 Power switch on (READY) and steering wheel being turned: Value changes within 4 to 35 V range -
      Torque Sensor 1 Output Torque sensor voltage

      Min.: 0.0000 V

      Max.: 4.9725 V

      • Power switch on (READY) and steering wheel not being turned (without load): 2.3 to 2.7 V

      • Power switch on (READY) and steering wheel being turned to the right with vehicle stopped: 2.5 to 4.7 V

      • Power switch on (READY) and steering wheel being turned to the left with vehicle stopped: 0.3 to 2.5 V

      		 -
      Torque Sensor 2 Output Torque sensor voltage

      Min.: 0.0000 V

      Max.: 4.9725 V

      • Power switch on (READY) and steering wheel not being turned (without load): 2.3 to 2.7 V

      • Power switch on (READY) and steering wheel being turned to the right with vehicle stopped: 0.3 to 2.5 V

      • Power switch on (READY) and steering wheel being turned to the left with vehicle stopped: 2.5 to 4.7 V

      		 -
      IG ON/OFF Times Number of times of power switch ON/OFF after fail detection

      Min.: 0 times

      Max.: 65535 times

      		 - This value indicates the number of times of power switch ON/OFF after the latest DTC detection.
      Motor Overheat Record Continuous overheat prevention control record Unrec or Rec Unrec

      Unrec: Unrecorded

      Rec: Recorded
      Motor Lo Power Record PIG power source voltage drop record Unrec or Rec Unrec

      Unrec: Unrecorded

      Rec: Recorded
      Eng Rev Inter Record Record of engine speed signal interruption Unrec or Rec Unrec

      Unrec: Unrecorded

      Rec: Recorded
      Spd Sig Invalid Record Record of vehicle speed signal invalid Unrec or Rec Unrec

      Unrec: Unrecorded

      Rec: Recorded
      Battery Voltage Lo Record Number of times auxiliary battery voltage is low

      Min.: 0 times

      Max.: 65535 times

      		 0 to 65535 When cranking occurs during assist, the count may increase.
      Battery Control Count (Body ECU) Number of auxiliary battery load control operations

      Min.: 0 times

      Max.: 65535 times

      		 0 to 65535 -
      Battery Voltage Auxiliary battery voltage

      Min.: 0.0 V

      Max.: 25.5 V

      		 Always: 9 to 16 V -
      PS Assist Signal Power steering assist signal ON or OFF

      • Except power switch on (READY): OFF

      • Power switch on (READY): ON

      		 -
      Ready Status Ready status OFF or Ready

      • Except power switch on (READY): OFF

      • Power switch on (READY): ON

      		 -
      Motor Overheat Limit Cnt(Normal) Number of times that assist limit was performed according to the estimation of the portion where heat was generated in the power steering ECU and motor coil temperature

      Min.: 0 times

      Max.: 255 times

      		 - -
      Assist Limit Cnt(Power Voltage Low) Number of times that assist limit was performed due to auxiliary battery voltage having dropped to 9 V or below

      Min.: 0 times

      Max.: 255 times

      		 - When cranking occurs during assist, the count may increase.
      Power Vol Low Prevention Limit Cnt Number of times that assist limit was performed due to auxiliary battery voltage having dropped to 9.7 V or below

      Min.: 0 times

      Max.: 255 times

      		 - When cranking occurs during assist, the count may increase.
      Eng Stall/Ready OFF Cnt Number of times that assist limit was performed after the engine stalled and the power switch was turned off

      Min.: 0 times

      Max.: 255 times

      		 - -
      Motor Overheat Limit Cnt(Motor Overload) Number of times that assist limit was performed to prevent the system from overheating in a case where the motor is overloaded because it is locked due to the steering wheel being turned to the full lock position or a tire hitting a curb

      Min.: 0 times

      Max.: 255 times

      		 - -
      Assist Limit Record 1 Information of assist limit that was used in the past or is currently in use (latest history) Unrec, Mtr Overheat, Pow Vol Low, Pow Vol Low Prevent, Eng Stall, Ready OFF, Mtr Overload, DC-DC Malf, Vhcl Spd Sig Malf, Batt Vol Keep - -
      Record 1 Key Cycle Number of times that the power switch was turned on (IG) before Assist Limit Record 1 was stored

      Min.: 0 times

      Max.: 65535 times

      		 - -
      Record 1 Key Cycle Elapsed Time Period of time that elapsed after the power switch was turned on (IG) before Assist Limit Record 1 was stored

      Min.: 0.0 s

      Max.: 53687091.1 s

      		 - -
      Assist Limit Record 2 Information of assist limit that was used in the past (second latest history) Unrec, Mtr Overheat, Pow Vol Low, Pow Vol Low Prevent, Eng Stall, Ready OFF, Mtr Overload, DC-DC Malf, Vhcl Spd Sig Malf, Batt Vol Keep - -
      Record 2 Key Cycle Number of times that the power switch was turned on (IG) after Assist Limit Record 2 was stored before Assist Limit Record 1 was stored

      Min.: 0 times

      Max.: 65535 times

      		 - -
      Record 2 Key Cycle Elapsed Time Period of time that elapsed after the power switch was turned on (IG) before Assist Limit Record 2 was stored

      Min.: 0.0 s

      Max.: 53687091.1 s

      		 - -
      Assist Limit Record 3 Information of assist limit that was used in the past (third latest history) Unrec, Mtr Overheat, Pow Vol Low, Pow Vol Low Prevent, Eng Stall, Ready OFF, Mtr Overload, DC-DC Malf, Vhcl Spd Sig Malf, Batt Vol Keep - -
      Record 3 Key Cycle Number of times that the power switch was turned on (IG) after Assist Limit Record 3 was stored before Assist Limit Record 2 was stored

      Min.: 0 times

      Max.: 65535 times

      		 - -
      Record 3 Key Cycle Elapsed Time Period of time that elapsed after the power switch was turned on (IG) before Assist Limit Record 3 was stored

      Min.: 0.0 s

      Max.: 53687091.1 s

      		 - -
      Current Key Cycle Number of current trip

      Min.: 0 times

      Max.: 65535 times

      		 - -
      Current Key Cycle Elapsed Time Time elapsed since power switch was turned on (IG)

      Min.: 0.0 s

      Max.: 53687091.1 s

      		 - -
      The Number of DTCs Number of detected DTCs when freeze frame data stored

      Min.: 0

      Max.: 255

      		 - -

    Tech Tips

    When the value displayed for "Battery Voltage Lo Record" in the Data List is not 0 with the auxiliary battery voltage low, the system is limiting the rear window defogger, seat heater, PTC heater, outer mirror heater and windshield deicer operation. In this case, inspect the charging system.

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