POWER STEERING SYSTEM (for 2GR-FE) TERMINALS OF ECU


  1. CHECK POWER STEERING ECU ASSEMBLY

    A01I0RNE05
    Text in Illustration
    *a

    Component without harness connected

    (Power Steering ECU Assembly)

    		 - -

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

      Note

      When the P/S 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
      j3-1 (IG) - j2-2 (PGND) R - B IG power source Engine switch on (IG) 9 to 16 V
      j3-4 (CANH) - j3-8 (CANL) Y - SB CAN communication line Engine switch off 54 to 69 Ω
      j3-5 (TS) - j2-2 (PGND) O - B Terminal TS of DLC3 Always 9 to 16 V
      b-1 (TRQG) - Body ground B - Body ground Torque sensor ground Always Below 1 Ω
      b-2 (TRQ2) - b-1 (TRQG) Y - B Torque sensor signal

      Engine running

      Steering wheel not being turned (without load)

      		 2.3 to 2.7 V

      Engine running

      Steering wheel being turned to right with vehicle stopped

      		 0.3 to 2.5 V

      Engine running

      Steering wheel being turned to left with vehicle stopped

      		 2.5 to 4.7 V
      b-3 (TRQV) - b-1 (TRQG) R - B Torque sensor voltage source Engine switch on (IG) 8.5 to 10.5 V
      b-5 (TRQF) - j2-2 (PGND) G - B Torque sensor reference voltage Engine switch on (IG) 3.35 to 3.37 V
      b-7 (TRQ1) - b-1 (TRQG) W - B Torque sensor signal

      Engine running

      Steering wheel not being turned (without load)

      		 2.3 to 2.7 V

      Engine running

      Steering wheel being turned to right with vehicle stopped

      		 2.5 to 4.7 V

      Engine running

      Steering wheel being turned to left with vehicle stopped

      		 0.3 to 2.5 V
      c-1 (RZCS2) - j2-2 (PGND) B - B Rotation angle sensor COS aspect output signal

      Engine running

      Steering wheel turned

      		 0.68 to 4.42 V
      c-2 (RZV2) - j2-2 (PGND) G - B Rotation angle sensor excitation output signal

      Engine running

      Steering wheel turned

      		 0.68 to 4.42 V
      c-3 (RZSN2) - j2-2 (PGND) L - B Rotation angle sensor SIN aspect output signal

      Engine running

      Steering wheel turned

      		 0.68 to 4.42 V
      c-5 (RZCS1) - j2-2 (PGND) R - B Rotation angle sensor COS aspect output signal

      Engine running

      Steering wheel turned

      		 0.68 to 4.42 V
      c-6 (RZV1) - j2-2 (PGND) W - B Rotation angle sensor excitation output signal

      Engine running

      Steering wheel turned

      		 0.68 to 4.42 V
      c-7 (RZSN1) - j2-2 (PGND) Y - B Rotation angle sensor SIN aspect output signal

      Engine running

      Steering wheel turned

      		 0.68 to 4.42 V
      j2-1 (PIG) - j2-2 (PGND) R - B Power source Always 9 to 16 V
      j2-2 (PGND) - Body ground B - Body ground Power ground Always Below 1 Ω
      a-1 (PHA) - j2-2 (PGND) # - B A phase motor output

      Engine running

      Steering wheel turned

      		 Value changes within 4 to 35 V range
      a-2 (PHB) - j2-2 (PGND) # - B B phase motor output

      Engine running

      Steering wheel turned

      		 Value changes within 4 to 35 V range
      a-3 (PHC) - j2-2 (PGND) # - B C phase motor output

      Engine running

      Steering wheel turned

      		 Value changes within 4 to 35 V range

      Tech Tips

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