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Terminals Of Ecu

WARNING: This page is about a different car, the 2011 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
  1. TERMINALS OF ECU 
    Fig 1: Skid Control ECU Connector Terminal Identification (1 Of 2)
    GTY208986Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Terminal No. (Symbol) Terminal Description
    1 (GND2) Motor ground
    2 (BM) Motor relay test input
    3 (FR+) Front RH wheel speed signal input (+)
    4 (FL-) Front LH wheel speed signal input (-)
    5 (RR+) Rear RH wheel speed signal input (+)
    6 (RL-) Rear LH wheel speed signal input (-)
    11 (CANH) Can communication line H
    12 (SP1) Speed signal output
    13 (D/G) Diagnostic tester communication line
    14 (MRF) Fail safe motor relay output
    15 (MR) Motor relay output
    17 (FR-) Front RH wheel speed signal input (-)
    18 (FL+) Front LH wheel speed signal input (+)
    19 (RR-) Rear RH wheel speed signal input (-)
    20 (RL+) Rear LH wheel speed signal input (+)
    24 (TS) Sensor check input
    25 (CANL) Can communication line L
    27 (STP1) Stop light switch input
    28 (PKB) Parking brake switch input
    31 (+BS) Solenoid relay power supply
    32 (GND1) Skid control ECU ground
    39 (RRO) Rear RH wheel speed signal output
    40 (RLO) Rear LH wheel speed signal output
    42 (WFSE) WFSE input
    43 (CSW) VSC OFF switch input
    45 (R+) Power supply for motor relay
    46 (IG1) IG1 power supply
  2. TERMINAL INSPECTION 
    1. Disconnect the connector and measure the voltage or resistance on the wire harness side.
      Fig 2: Skid Control ECU Connector Terminal Identification (2 Of 2)
      GTY209024Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      Voltage cannot be measured with the connector connected to the skid control ECU as the connector is watertight.

      Terminal No. (Symbol) Wining Color Terminal Description Condition Specified Condition
      A34-1 (GND2) - Body ground W-B - Body ground Motor ground IG switch OFF Below 1 Ω
      A34-27 (STP1) - Body ground L-B - Body ground Stop light switch input Stop light switch ON (Brake pedal pushed) 8 to 14 V
      A34-27 (STP1) - Body ground L-B - Body ground Stop light switch input Stop light switch OFF (Brake pedal released) Below 1.5 Ω
      A34-28 (PKB) - Body ground V - Body ground Parking brake switch input IG switch ON (IG), parking brake switch ON Below 1 Ω
      A34-28 (PKB) - Body ground V - Body ground Parking brake switch input IG switch ON (IG), parking brake switch OFF 10 kΩ or higher
      A34-31 (+BS) - Body ground L - Body ground Solenoid relay power supply Always 10 to 14 V
      A34-32 (GND1) - Body ground W-B - Body ground Skid control ECU ground IG switch OFF Below 1 Ω
      A34-43 (CSW) - Body ground R - Body ground VSC OFF switch input VSC OFF switch held ON → OFF (Released) Below 25 Ω → 10 kΩ or higher
      A34-46 (IG1) - Body ground BR - Body ground IG1 power supply IG switch ON (IG) 10 to 14 V
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