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Terminals Of Ecu

  1. TERMINALS OF ECU 
    Fig 1: Identifying Power Steering ECU Connector Terminals
    G05782465Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT

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

    TERMINAL DESCRIPTION

    Terminal No. (Symbols) Wiring Color Terminal Description
    A44-1 (CA2H) R High-level CAN bus line
    A44-2 (CA1H) B High-level CAN bus line
    A44-3 (CA1L) W Low-level CAN bus line
    A44-4 (PIG) B Power source
    A44-5 (PGND) W-B Power ground
    A44-6 (+B) R +B
    A44-7 (WDD1) G DC / DC warning output signal
    A44-8 (CA2L) G Low-level CAN bus line
    A44-9 (IG) G IG power source
    A44-10 (ASST) L DC / DC demand output signal
    C1-1 (V) W V phase motor output
    C1-2 (U) B U phase motor output
    C1-3 (W) R W phase motor output
    C2-1 (RZG) B Rotation angle sensor power source circuit ground
    C2-2 (SRZG) BR Rotation angle sensor shield ground
    C2-3 (RZV) G Rotation angle sensor power source
    C2-4 (TRQV) W Torque sensor power source
    C2-6 (TQG1) L-W Torque sensor power source circuit ground
    C2-7 (RZSN) R SIN phase input signal (rotation angle sensor)
    C2-8 (RZCS) W COS phase input signal (rotation angle sensor)
    C2-9 (INSN) G-W SIN phase input signal (torque sensor input shaft side)
    C2-10 (INCS) R-L COS phase input signal (torque sensor input shaft side)
    C2-11 (OUSN) G-B SIN phase input signal (torque sensor output shaft side)
    C2-12 (OUCS) Y-B COS phase input signal (torque sensor output shaft side)
    C2-13 (TQG2) R-B Torque sensor detection circuit ground
  2. CHECK WIRE HARNESS SIDE CONNECTOR 
    Fig 2: Identifying Power Steering ECU Wire Harness Side Connectors
    G04944336Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
    A44-4 (PIG) - A44-5 (PGND) B - W-B Power source Power switch ON (READY) 30 to 50 V
    A44-5 (PGND) - Body ground W-B - Body ground Power ground Always Below 1 Ω
    A44-9 (IG) - A44-5 (PGND) G - W-B IG power source Power switch ON (IG) 11 to 14 V
    C1-2 (U) - C1-3 (W)/C1-1 (V) B - R/W U phase motor output Always Below 1 Ω
    C1-3 (W) - C1-2 (U)/C1-1 (V) R - B/W W phase motor output Always Below 1 Ω
    C1-1 (V) - C1-2 (U)/C1-3 (W) W - B/R V phase motor output Always Below 1 Ω
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