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Terminals Of Ecu

WARNING: This page is about a different car, the 2008 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.
  1. Terminal of ECU 
    Fig 1: Identifying Terminal Of ECU Connector
    G05139659Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    ECU CONNECTOR TERMINALS REFERENCE

    Symbols (Terminal No.) Terminal Description
    GND2 (1) Pump motor ground
    BM (2) Motor relay input
    FR+ (3) Front wheel speed RH signal (+) input
    FL- (4) Front wheel speed LH signal (-) input
    RR+ (5) Rear wheel speed RH signal (+) input
    RL- (6) Rear wheel speed LH signal (-) input
    CANH (11) CAN communication line H
    SP1 (12) Speed signal output for combination meter
    D/G (13) Diagnosis tester communication line
    MRF (14) Fail safe motor relay output
    MR (15) Motor relay output
    FR- (17) Front wheel speed RH signal (-) input
    FL+ (18) Front wheel speed LH signal (+) input
    RR- (19) Rear wheel speed RH signal (-) input
    RL+ (20) Rear wheel speed LH signal (+) input
    TS (24) Test mode (signal check) input
    CANL (25) CAN communication line L
    STP (27) Stop light switch input
    PKB (28) Parking brake switch input
    WA (29) ABS warning light output
    BZ (30) Skid control buzzer output
    +BS (31) Solenoid relay power supply
    GND1 (32) Skid control ECU ground
    IND (34) SLIP indicator light output
    WT (35) VSC OFF indicator light output
    VSCW (36) VSC warning light output
    WFSE (42) WFSE input
    CSW (43) Traction OFF switch input
    BRL (44) BRAKE warning light output
    R+ (45) Power supply for motor relay
    IG1 (46) IG1 power supply
  2. Terminal Inspection 
    1. Disconnect the connector and measure the voltage or resistance on the wire harness side.
      Fig 2: Identifying Terminals Of Skid Control ECU Connector
      G05130966Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

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

      Standard 

      SKID CONTROL ECU CONNECTOR TERMINALS DESCRIPTION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND2(S1-1) - Body ground W-B - Body ground Pump motor ground Ignition switch off Below 1 Ω
      STP (S1-27) - Body ground G-W - Body ground Stop light switch input Stop light switch ON → OFF (Brake pedal depressed → released) 8 to 14 V → Below 1.5 V
      PKB (S1-28) - Body ground R-W - Body ground Parking brake switch input Ignition switch ON, parking brake switch ON → OFF Below 1 Ω → 10 kΩ or higher
      BZ (S1-30) - Body ground P-B - Body ground Buzzer output Ignition switch ON, when buzzer not sounding 6 to 10 V
      +BS(S1-31) - Body ground W - Body ground Solenoid relay power supply Always 10 to 14 V
      GND1 (S1 -32) -Body ground W-B - Body ground Skid control ECU ground Always Below 1 Ω
      CSW (S1-43) - Body ground P-L - Body ground Traction OFF switch input Traction OFF switch held ON → OFF (Not pressed) Below 1 Ω → 10 kΩ or higher
      IG1 (S-M6) - Body ground B-R - Body ground IG1 power supply Ignition switch ON 10 to 14 V
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