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Home › Scion › 2006 › xA Standard › Repair and Diagnosis › Brakes › Traction Control › Brakes - Abs › Vehicle Stability Control System › Terminals Of Ecu

Terminals Of Ecu

  1. CHECK BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU ASSEMBLY WITH ACTUATOR) 
    Fig 1: Identifying Terminals Of ECU
    G04155094Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage and resistance of the wire harness side connector.
      TERMINAL SPECIFICATION CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      BM (S1-2) - GND1, 2 (S1-1, 32) W-L - W-B Motor relay test input Ignition switch ON, pump motor running 11 to 14 V
      FR+ (S1-3) - FR- (S1-17) G-W - G-O Front RH wheel speed signal input Ignition switch ON, slowly turn right front wheel AC generation
      FL+ (S1-18) - FL- (S1-4) R - G Front LH wheel speed signal input Ignition switch ON, slowly turn left front wheel AC generation
      RR+ (S1-5) - RR- (S1-19) LG-B - LG-R Rear RH wheel speed signal input Ignition switch ON, slowly turn right rear wheel AC generation
      RL+ (S1-20) - RL- (S1-6) Y-B - Y-B Rear LH wheel speed signal input Ignition switch ON, slowly turn left rear wheel AC generation
      NEO (S1-10) - GND1, 2 (S1-1, 32) V - W-B Engine rpm signal input Engine idling Pulse generation
      CANH (S1-11) - CANL (S1-25) B - W CAN communication line Ignition switch ON Pulse generation
      D/G (S1-13) - GND1, 2 (S1-1, 32) W - W-B Diagnostic communication line Ignition switch ON 11 to 14 V
      MRF (S1-14) - R+ (S1-45) GR - R-W Fail-safe motor relay output Ignition switch ON 11 to 14 V
      MR (S1-15) - R+ (S1-45) P - R-W Ignition switch ON, pump motor running Motor relay output 11 to 14 V
      +BS (S1-31) - GND1, 2 (S1-1, 32) B - W-B Solenoid relay power supply Always 11 to 14 V
      STP (S1-27) - GND1, 2 (S1-1, 32) G-W - W-B Stop light input signal Stop light switch ON (Brake pedal depressed) 8 to 14 V
      Stop light switch OFF (Brake pedal released) Below 1.5 V
      PKB (S1-28) - GND1, 2 (S1-1, 32) Y-B - W-B Parking brake switch input Ignition switch ON, parking brake switch ON Below 1.5 V
      Ignition switch ON, parking brake switch OFF 9 to 14 V
      WA (S1-29) - GND1, 2 (S1-1, 32) P - W-B ABS warning light output Ignition switch ON, ABS warning light ON 4 to 14 V
      Ignition switch ON, ABS warning light OFF Below 2.0 V
      Bz (S1-30) - GND1, 2 (S1-1, 32) R-W - W-B Buzzer output Ignition switch ON, VSC buzzer sounds Below 1.0 V
      Ignition switch ON, VSC buzzer does not sound 6 to 14 V
      IND (S1-34) - GND1, 2 (S1-1, 32) B-R - W-B SLIP input Ignition switch ON 11 to 14 V
      WT (S1-35) - GND1, 2 (S1-1, 32) R-L - W-B TRAC OFF input Ignition switch ON 11 to 14 V
      VSCW (S1-36) - GND1, 2 (S1-1, 32) BR-W - W-B VSC warning light output Ignition switch ON, VSC warning light ON Below 2.0 V
      Ignition switch ON, VSC warning light OFF 11 to 14 V
      WFSE (S1-42) - GND1, 2 (S1-1, 32) R - W-B WIFSE input Ignition switch ON 11 to 14 V
      CSW (S1-43) - GND1, 2 (S1-1, 32) W-L - W-B TRAC OFF switch input TRAC OFF switch OFF 11 to 14 V
      BRL (S1-44) - GND1, 2 (S1-1, 32) B-Y - W-B Brake warning line output Ignition switch ON, brake warning light ON 4 to 14 V
      Ignition switch ON, brake warning light OFF Below 1.0 V
      R+ (S1-45) - GND1, 2 (S1-1, 32) R-W - W-B Power supply for motor relay Ignition switch ON, ABS warning light OFF 11 to 14 V
      IG1 (S1-46) - GND1, 2 (S1-1, 32) B-L - W-B IG1 power supply Ignition switch ON 11 to 14 V

      If the result is not as specified, there may be a malfunction in the ECU.

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