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Terminals Of Ecu

  1. TERMINALS OF ECU 
    Fig 1: Identifying Terminals Of ECU
    G04944335Courtesy 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 CHART

    Terminal No. (Symbols) Wiring Color Terminal Description
    A44-1 (CA2H) B 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 DCDC warning output signal
    A44-8 (CA2L) W Low-level CAN bus line
    A44-9 (IG) G IG power source
    A44-10 (LDD) L DCDC demand output signal
    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
    C1-1 (V) W V phase motor output
    C1-2 (U) B U phase motor output
    C1-3 (W) R W phase motor output
  2. CHECK WIRE HARNESS SIDE CONNECTOR 
Fig 2: Identifying Wire Harness Connector Terminals
G04944336Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
TERMINAL DESCRIPTION AND SPECIFICATION CHART

Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
A44-4 (PIG) - A44-5 (PGND) B - W-B Power source Engine switch on (IG) 30 to 48 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 Engine 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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