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Terminals Of Ecu

WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Power Steering ECU Connector Terminals
G04832555Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
VOLTAGE AND RESISTANCE SPECIFICATION

Symbols (Terminals No.) Terminal Description Condition Specified Condition
PIG(A19-1) - PGND(A19-2) EPS fuse Always 11 to 14 V
PGND (A19-2) - Body ground Body ground Always Below 1 Ω
M1(b1-1) - PGND(A19-2) Power steering motor
  1. With ignition switch on, turn steering wheel to left
  2. With ignition switch on, turn steering wheel to right
  1. 11 to 14 V
  2. Below 1 V
M2(b1-2) - PGND (A19-2) Power steering motor
  1. With ignition switch on, turn steering wheel to left
  2. With ignition switch on, turn steering wheel to right
  1. Below 1V
  2. 11 to 14 V
CANH (D31-1) - CANL (D31-7) CAN BUS Ignition switch off 108 to 132 Ω
SIL(D31-2) - PGND(A19-2) DLC3 Communication established by connecting Techstream to DLC3 Pulse generation (see  1waveform 1)
IG(D31-6) - PGND (A19-2) ECU-IG fuse Ignition switch on 11 to 14 V
TS (D31-11) - PGND (A19-2) DLC3 Ignition switch on 11 to 14 V
SPD(1) (D31-5) - PGND (A19-2) Speed signal Ignition switch on Pulse generation (see  2waveform 2)
TRQ1 (c1-5) - PGND (A19-2) Torque sensor With ignition switch on, turn steering wheel to left and right 0.3 to 4.7 V
TRQV (c1-6) - PGND (A19-2) Torque sensor Ignition switch on 7.5 to 8.5 V
TRQ2 (c1-7) - PGND (A19-2) Torque sensor With ignition switch on, turn steering wheel to left and right 0.3 to 4.7 V
TRQG (c1-8) - PGND (A19-2) Torque sensor Always Below 1 Ω
(1) Only for vehicles without ABS
  1. Waveform 1 

    Reference 

    WAVEFORM 1 REFERENCE

    Terminal SIL - Body ground
    Tool setting 5 V/DIV, 1 ms/DIV
    Condition Communication established by connecting Techstream to DLC3
    Fig 2: Waveform 1 Graph
    G04832556Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Waveform 2 

    Reference 

    WAVEFORM 2 REFERENCE

    Terminal SPD - Body ground
    Tool setting 5 V/DIV, 20 ms/DIV
    Condition Vehicle speed approximately 12.4 mph (20 km/h)
    Fig 3: Waveform 2 Graph
    G04832557Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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