POWER STEERING SYSTEM TERMINALS OF ECU


  1. CHECK POWER STEERING ECU ASSEMBLY

    A01VZQIE02
    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 EPS 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
      c1-1 (IG) - c2-2 (PGND) R - B IG power source Engine switch on (IG) 8 to 16 V
      c1-6 (TS) - Test mode terminal O - Body ground Test mode signal Always 9 to 16 V
      c1-7 (CANH) - c1-8 (CANL) Y - SB CAN communication line Engine switch off 54 to 69 Ω
      z11-1 (TRQ2) - z11-2 (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

      		 1.2 to 2.5 V

      Engine running

      Steering wheel being turned to left with vehicle stopped

      		 2.5 to 3.8 V
      z11-2 (TRQG) - Body ground B - Body ground Torque sensor ground Always Below 1 Ω
      z11-8 (TRQV) - z11-2 (TRQG) R - B Torque sensor voltage source Engine switch on (IG) 4.5 to 5.5 V
      z11-9 (TRQ1) - z11-2 (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 3.8 V

      Engine running

      Steering wheel being turned to left with vehicle stopped

      		 1.2 to 2.5 V
      c2-1 (PIG) - c2-2 (PGND) R - B Power source Always 9 to 16 V
      c2-2 (PGND) - Body ground B - Body ground Power ground Always Below 1 Ω

      If the result is not as specified, the ECU may have a malfunction.