POWER STEERING SYSTEM TERMINALS OF ECU


  1. TERMINALS OF ECU

    A01FD8ZE01
    Text in Illustration
    *a

    Component with harness connected

    (Power Steering ECU)

    		 - -

    Tech Tips

    The power steering ECU uses waterproof connectors. Therefore, voltage or waveforms cannot be checked with the connectors connected to the vehicle.

    Terminal No. (Symbol) Wiring Color Terminal Description
    A29-2 (CA1L) W Low-level CAN bus line
    A29-3 (CA1H) L High-level CAN bus line
    A29-4 (CA3H) Y High-level CAN bus line
    A29-5 (TS) Y TS signal
    A29-6 (CA3L) SB Low-level CAN bus line
    A29-9 (PGND) B Power ground
    A29-10 (PIG) W Power source
    A29-12 (RLY) LG EPS relay drive signal
    A29-14 (IG) GR IG power source
    C7-1 (RZG) B Motor rotation angle sensor power source circuit ground
    C7-2 (SRZG) BR Motor rotation angle sensor shield ground
    C7-3 (RZV) G Motor rotation angle sensor power source
    C7-4 (TRQV) W Torque sensor power source
    C7-6 (TQG1) L-W Torque sensor power source circuit ground
    C7-7 (RZSN) R SIN phase input signal (Motor rotation angle sensor)
    C7-8 (RZCS) W COS phase input signal (Motor rotation angle sensor)
    C7-9 (INSN) G-W SIN phase input signal (Torque sensor input shaft side)
    C7-10 (INCS) R-L COS phase input signal (Torque sensor input shaft side)
    C7-11 (OUSN) G-B SIN phase input signal (Torque sensor output shaft side)
    C7-12 (OUCS) Y-B COS phase input signal (Torque sensor output shaft side)
    C7-13 (TQG2) R-B Torque sensor detection circuit ground
    C8-1 (V) W V phase motor output
    C8-2 (W) B W phase motor output
    C8-3 (U) R U phase motor output

  2. CHECK WIRE HARNESS SIDE CONNECTOR

    A01FII4E01
    Text in Illustration
    *a

    Front view of wire harness connector

    (to Power Steering ECU)

    		 - -

    1. Disconnect the power steering ECU connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A29-9 (PGND) - Body ground B - Body ground Power ground Always Below 1 Ω
      A29-12 (RLY) - Body ground LG - Body ground EPS relay drive signal Always 11 to 14 V
      A29-14 (IG) - Body ground GR - Body ground IG power source Engine switch on (IG) 11 to 14 V
      C8-1 (V) - C8-3 (U) or C8-2 (W) W - R or B V phase motor output Always Below 1 Ω
      C8-2 (W) - C8-3 (U) or C8-1 (V) B - R or W W phase motor output Always Below 1 Ω
      C8-3 (U) - C8-2 (W) or C8-1 (V) R - B or W U phase motor output Always Below 1 Ω