FixVault

Terminals Of Ecu

WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Inspect the connector from the backside while connector is connected.

  1. SKID CONTROL ECU 
    Fig 1: Identifying Skid Control ECU Connector Terminals
    G04112910Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINAL SPECIFICATION CHART

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    GND1 (S38-1) - Body ground W-B - Body ground Ground circuit Always Below 1 Ω
    GND2 (S39-2) - Body ground W-B - Body ground Ground circuit Always Below 1 Ω
    GND3 (S39-1) - Body ground W-B - Body ground Ground circuit Always Below 1 Ω
    GND4 (S40-2) - Body ground W-B - Body ground Ground circuit Always Below 1 Ω
    GND5 (S40-1) - Body ground W-B - Body ground Ground circuit Always Below 1 Ω
    GND6 (S41-4) - Body ground W-B - Body ground Ground circuit Always Below 1 Ω
    FR+ (S38-32) - FR- (S38- 22) W - O Front speed sensor RH circuit Ignition switch ON, driving at approximately 18 mph (30 km/h) Pulse generation (see WAVEFORM 1  )
    FL+ (S41-28) - FL- (S41- 22) G - R Front speed sensor LH circuit Ignition switch ON, driving at approximately 18 mph (30 km/h) Pulse generation (see WAVEFORM 1  )
    RR+ (S40-31) - RR- (S40-23) G - R Rear speed sensor RH circuit Ignition switch ON, driving at approximately 18 mph (30 km/h) Pulse generation (see WAVEFORM 1  )
    RL+ (S39-35) - RL- (S39- 27) R - G Rear speed sensor LH circuit Ignition switch ON, driving at approximately 18 mph (30 km/h) Pulse generation (see WAVEFORM 1  )
    FSS (S41-13) - Body ground LG - Body ground Front speed sensor shield ground circuit Always Below 1 Ω
    RSS (S39-10) - Body ground BR - Body ground Rear speed sensor shield ground circuit Always Below 1 Ω
    IG1 (S39-7) - Body ground Y - Body ground Power source voltage Ignition switch ON 10 to 14 V
    IG2 (S41-5) - Body ground W - Body ground Power source voltage Ignition switch ON 10 to 14 V
    CANH (S39-19) - CANL (S39-18) B - W CAN communication line Ignition switch off 54 to 67 Ω
    1. Waveform 1 (Reference):
      WAVEFORM 1

      Item Contents
      Tool setting 1 V/DIV, 2 ms/DIV
      Vehicle condition Driving at approximately 18 mph (30 km/h)
      Fig 2: Identifying Waveform 1
      G04112911Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      As vehicle speed (wheel rotation speed) increases, the width of the waveform narrows.