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Terminals Of Ecu

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying ECU Terminals
G05752993Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) 
    VOLTAGE SPECIFICATION

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    J29-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 V
    J29-2 (SGND) - Body ground W-B - Body ground Signal ground Always Below 1 V
    J29-3 (IGE) - J29-1 (GND) W - W-B Power source for driving motor
    • Motor is in operation
    • Motor is not in operation
    • Below 1 V
    • 10 to 12 V
    J29-4 (SLP1) - J29-2 (SGND) R - W-B Unlock position sensor output signal
    • Steering is locked
    • Steering lock is released
    • 10 to 14 V
    • Below 1 V
    J29-5 (LIN) - J29-2 (SGND) V - W-B LIN communication bus Engine switch on (IG) Pulse generation
    J29-6 (IG2) - J29-1 (GND) LG - W-B IG signal input Engine switch on (IG) 10 to 14 V
    J29-7 (B) - J29-1 (GND) O - W-B Power source Always 10 to 14 V