POWER STEERING SYSTEM (for 2AR without Wireless Door Lock) TERMINALS OF ECU

  1. CHECK POWER STEERING ECU ASSEMBLY

    A011UZ0E02
    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

      • Check if the power steering ECU assembly connectors are securely connected by pulling on them from the backside.

      • If the P/S warning light is illuminated due to a malfunction, the fail-safe function may cause the voltage of the power steering ECU's terminals to become 0 V.

      Terminals No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      j1-1 (IG) - Body ground R - Body ground IG power source Ignition switch ON 9 to 16 V
      j1-6 (TS) - Body ground O - Body ground Test mode signal Always 9 to 16 V
      j1-7 (CANH) - j1-8 (CANL) Y - SB CAN communication line Ignition switch off 54 to 69 Ω
      z16-1 (TRQ2) - Body ground Y - Body ground Torque sensor 2 input signal Engine running, steering wheel not being turned (without load) 2.3 to 2.7 V
      Engine running, steering wheel being turned to right 1.2 to 2.5 V
      Engine running, steering wheel being turned to left 2.5 to 3.8 V
      z16-2 (TRQG) - Body ground B - Body ground Torque sensor ground Always Below 1 Ω
      z16-8 (TRQV) - Body ground R - Body ground Torque sensor power source Engine running 4.5 to 5.5 V
      z16-9 (TRQ1) - Body ground W - Body ground Torque sensor 1 input signal Engine running, steering wheel not being turned (without load) 2.3 to 2.7 V
      Engine running, steering wheel being turned to right 2.5 to 3.8 V
      Engine running, steering wheel being turned to left 1.2 to 2.5 V
      z18-1 (M1) - Body ground R - Body ground Power steering motor assembly output signal 1 Engine running, steering wheel being turned to left 9 to 16 V
      Engine running, steering wheel being turned to right Below 1 V
      z18-2 (M2) - Body ground B - Body ground Power steering motor assembly output signal 2 Engine running, steering wheel being turned to left Below 1 V
      Engine running, steering wheel being turned to right 9 to 16 V
      j2-1 (PIG) - Body ground R - Body ground Power steering motor assembly power supply input signal Always 9 to 16 V
      j2-2 (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.