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Terminals Of Ecu

  1. SKID CONTROL ECU 
    Fig 1: Identifying Skid Control ECU Terminals
    G04090547Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
    TERMINAL SPECIFICATION TABLE

    Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
    BM (S1-2) - GND1 (S1-32), GND2 (S1-1) B-W - W-L, W-B Motor relay test input IG switch ON, pump motor running 10 to 14 V
    FR+ (S1-3) - FR- (S1-17) V - R Front RH wheel speed signal input IG switch ON, slowly turn right front wheel Pulse generation
    RR+ (S1-5) - RR- (S1-19) L-B - BR Rear RH wheel speed signal input IG switch ON, slowly turn right front wheel Pulse generation
    FSW+ (S1-7) - GND1 (S1-32), GND2 (S1-1) LG - W-L, W-B FSW switch input IG switch ON, brake pedal released 2 to 4 V
    TRC+ (S1-8) - TRC- (S1-22) BR - P ECM communication output IG switch ON Pulse generation
    ENG+ (S1-9) - ENG- (S1-23) G - LB ECM communication input IG switch ON Pulse generation
    NEO (S1-10) - GND1 (S1-32), GND2 (S1-1) V - W-L, W-B Engine revolution signal input Engine idling Pulse generation
    CANH (S1-11) - CANL (S1-25) L - W CAN communication line IG switch OFF 54 to 67 Ω
    SP1 (S1-12) - GND1 (S1-32), GND2 (S1-1) BR - W-L, W-B Speed signal output Vehicle drives at about 12 mph (20 km/h) Pulse generation
    D/G (S1-13) - GND1 (S1-32), GND2 (S1-1) L-B - W-L, W-B Diagnosis tester communication line IG switch ON 10 to 14 V
    MRF (S1-14) - R+ (S1-45) R - Y Fail safe motor relay output IG switch ON 10 to 14 V
    MR (S1-15) - R+ (S1-45) L - Y Motor relay output IG switch ON, pump motor running 10 to 14 V
    STPO(1) (S-16) - GND1 (S1-32), GND2 (S1-1) G - W-L, W-B Stop light relay output IG switch ON 10 to 14 V
    FL+ (S1-18) - FL- (S1-4) G - B Front LH wheel speed signal input IG switch ON, slowly turn left front wheel Pulse generation
    RL+ (S1-20) - RL- (S1-6) O -W Rear LH wheel speed signal input IG switch ON, slowly turn left rear wheel Pulse generation
    STP2(1) (S1-27) - GND1 (S1-32), GND2 (S1-1) GR - W-L, W-B Stop light relay input Stop light switch ON (Brake pedal depressed) 8 to 14 V
    STP2(1) (S1-27) - GND1 (S1-32), GND2 (S1-1) GR - W-L, W-B Stop light relay input Stop light switch OFF (Brake pedal released) Below 1.5 V
    TS (S1-24) - GND1 (S1-32), GND2 (S1-1) LG-B - W-B, W-B Sensor check input IG switch ON 10 to 14 V
    STP1(1) (S1-27) - GND1 (S1-32), GND2 (S1-1) W - W-L, W-B Stop light switch input Stop light switch ON (Brake pedal pushed) 8 to 14 V
    STP1(1) (S1-27) - GND1 (S1-32), GND2 (S1-1) W - W-L, W-B Stop light switch input Stop light switch OFF (Brake pedal released) Below 1.5 V
    PKB (S1-28) - GND1 (S1-32), GND2 (S1-1) LG - W-L, W-B Parking brake switch input IG switch ON, parking brake switch ON Below 1.5 V
    PKB (S1-28) - GND1 (S1-32), GND2 (S1-1) LG - W-L, W-B Parking brake switch input IG switch ON, parking brake switch OFF 10 to 14 V
    WA (S1-29) - GND1 (S1-32), GND2 (S1-1) V - W-L, W-B ABS warning light output IG switch ON, ABS warning light ON 6 to 11 V
    WA (S1-29) - GND1 (S1-32), GND2 (S1-1) V - W-L, W-B ABS warning light output IG switch ON, ABS warning light OFF Below 2.0 V
    BZ (S1-30) - GND1 (S1-32), GND2 (S1-1) O - W-L, W-B Buzzer output IG switch ON, VSC buzzer sounds Below 1.0 Ω 10 to 14 V
    BZ (S1-30) - GND1 (S1-32), GND2 (S1-1) O - W-L, W-B Buzzer output IG switch ON, VSC buzzer does not sound 10 to 14 V
    +BS (S1-31) - GND1 (S1-32), GND2 (S1-1) L - W-L, W-B Solenoid relay power supply Always 10 to 14 V
    VSCW (S1-36) - GND1 (S1-32), GND2 (S1-1) R - W-L, W-B VSC warning light output IG switch ON, VSC warning light ON Below 2.0 V
    RRO (3), (4) (S1-39) - GND1 (S1-32), GND2 (S1-1) O - W-L, W-B Rear RH wheel speed signal output Vehicle drives at about 20 km/h (12mph) Plus generation
    RRO(3), (4) (S1-40) - GND1 (S1-32), GND2 (S1-1) P - W-L, W-B Rear LH wheel speed signal output Vehicle drives at about 20 km/h (12mph) Plus generation
    WFSE (S1-42) - GND1 (S1-32), GND2 (S1-1) G - W-L, W-B WFSE input IG switch ON 10 to 14 V
    CSW (S1-43) - GND1 (S1-32), GND2 (S1-1) B - W-L, W-B TRAC OFF switch input TRAC OFF switch OFF 10 to 14 V
    BRL (S1-44) - GND1 (S1-32), GND2 (S1-1) GR - W-L, W-B Brake warning light output IG switch ON, BRAKE warning light ON 6 to 11 V
    BRL (S1-44) - GND1 (S1-32), GND2 (S1-1) GR - W-L, W-B Brake warning light output IG switch ON, BRAKE warning light OFF Below 2.0 V
    R+ (S1-45) - GND1 (S1-32), GND2 (S1-1) Y - W-L, W-B Power supply for motor relay IG switch ON 10 to 14 V
    IG1 (S1-46) - GND1 (S1-32), GND2 (S1-1) P - W-L, W-B IG1 power supply IG switch ON 10 to 14 V
    (1) w/ Dynamic Laser Cruise Control
    (2) w/o Dynamic Laser Cruise Control
    (3) w/ Air Suspension System
    (4) w/o Air Suspension System