POWER STEERING SYSTEM TERMINALS OF ECU

  1. C239855C10

    *a

    Component with harness connected

    (Power Steering ECU Assembly)

    -

    -

    CHECK POWER STEERING ECU ASSEMBLY

    1. Measure the voltage and resistance according to the value(s) in the table below.

      Note:

      When the power steering warning light is illuminated due to a malfunction, the fail-safe function may cause the voltage of the power steering ECU assembly terminals to become 0 V.

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      h1-1 (IG) - h2-2 (PGND)

      R - B

      IG power source

      Power switch on (IG)

      11 to 14 V

      h1-4 (CANH) - h1-8 (CANL)

      W - B

      CAN communication line

      Power switch off

      54 to 69 Ω

      h1-5 (TS) - h2-2 (PGND)

      O - B

      Terminal TS of DLC3

      Always

      11 to 14 V

      a-1 (TRQG) - Body ground

      - (Not available) - Body ground

      Torque sensor ground

      Always

      Below 1 Ω

      a-2 (TRQ2) - a-1 (TRQG)

      - (Not available)

      Torque sensor signal

      Power switch on (READY) Steering wheel not being turned (without load)

      2.3 to 2.7 V

      Power switch on (READY) Steering wheel being turned to right with vehicle stopped

      0.3 to 2.5 V

      Power switch on (READY) Steering wheel being turned to left with vehicle stopped

      2.5 to 4.7 V

      a-3 (TRQV) - a-1 (TRQG)

      - (Not available)

      Torque sensor voltage source

      Power switch on (READY)

      8.5 to 10.5 V

      a-5 (TRQF) - a-1 (TRQG)

      - (Not available)

      Torque sensor reference voltage

      Power switch on (READY)

      3.35 to 3.37 V

      a-7 (TRQ1) - a-1 (TRQG)

      - (Not available)

      Torque sensor signal

      Power switch on (READY) Steering wheel not being turned (without load)

      2.3 to 2.7 V

      Power switch on (READY) Steering wheel being turned to right with vehicle stopped

      2.5 to 4.7 V

      Power switch on (READY) Steering wheel being turned to left with vehicle stopped

      0.3 to 2.5 V

      b-1 (RZCS2) - h2-2 (PGND)

      - (Not available) - B

      Rotation angle sensor COS aspect output signal

      Power switch on (READY) Steering wheel turned

      0.68 to 4.42 V

      b-2 (RZV2) - h2-2 (PGND)

      - (Not available) - B

      Rotation angle sensor excitation output signal

      Power switch on (READY) Steering wheel turned

      0.68 to 4.42 V

      b-3 (RZSN2) - h2-2 (PGND)

      - (Not available) - B

      Rotation angle sensor SIN aspect output signal

      Power switch on (READY) Steering wheel turned

      0.68 to 4.42 V

      b-5 (RZCS1) - h2-2 (PGND)

      - (Not available) - B

      Rotation angle sensor COS aspect output signal

      Power switch on (READY) Steering wheel turned

      0.68 to 4.42 V

      b-6 (RZV1) - h2-2 (PGND)

      - (Not available) - B

      Rotation angle sensor excitation output signal

      Power switch on (READY) Steering wheel turned

      0.68 to 4.42 V

      b-7 (RZSN1) - h2-2 (PGND)

      - (Not available) - B

      Rotation angle sensor SIN aspect output signal

      Power switch on (READY) Steering wheel turned

      0.68 to 4.42 V

      h2-1 (PIG) - h2-2 (PGND)

      R - B

      Power source

      Always

      11 to 14 V

      h2-2 (PGND) - Body ground

      B - Body ground

      Power ground

      Always

      Below 1 Ω

      c-1 (PHA) - h2-2 (PGND)

      # - B

      A phase motor output

      Power switch on (READY) Steering wheel turned

      Value changes within 4 to 35 V range

      c-2 (PHB) - h2-2 (PGND)

      # - B

      B phase motor output

      Power switch on (READY) Steering wheel turned

      Value changes within 4 to 35 V range

      c-3 (PHC) - h2-2 (PGND)

      # - B

      C phase motor output

      Power switch on (READY) Steering wheel turned

      Value changes within 4 to 35 V range
      Tip:

      # means that the motor terminal is tightened directly to the ECU with bolts.