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Terminals Of Ecu

  1. CHECK DISTANCE CONTROL ECU 
    Fig 1: Identifying Terminals Of ECU Connector
    G05750597Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    ECU CONNECTOR TERMINALS REFERENCE CHART

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    J17-1 (B) - J17-12 (GND) B - BR Battery Always 11 to 14 V
    J17-8 (CANH) - J17-12 (GND) GR - BR CAN communication signal CAN communication circuit Pulse generation
    J17-9 (CANL) - J17-12 (GND) W - BR CAN communication signal CAN communication circuit Pulse generation
    J17-10 (SGND) - Body ground BR - Body ground Ground Always Below 1 V
    J17-12 (GND) -Body ground BR - Body ground Ground Always Below 1 V
    J17-13 (IGB) - J17-12 (GND) P - BR Engine switch on signal Engine switch off Below 1 V
    J17-13 (IGB) - J17-12 (GND) P - BR Engine switch on signal Engine switch on (IG) 11 to 14 V
    J17-16 (MODE) - J17-12 (GND) R - BR Steering pad switch signal (Distance control switch signal) Engine switch on (IG), Steering pad switch signal ON 0 to 2 V
    J17-16 (MODE) - J17-12 (GND) R - BR Steering pad switch signal (Distance control switch signal) Engine switch on (IG), Steering pad switch signal OFF 11 to 14 V
    J17-22 (LRDD) - J17-10 (SGND) O - BR Millimeter wave radar sensor input signal Engine switch on (IG) Pulse generation (see  awaveform 1)
    J17-23 (LRRD) - J17-10 (SGND) L - BR Millimeter wave radar sensor output signal Engine switch on (IG) Pulse generation (see  bwaveform 2)
    1. Reference waveform 1

      HINT:

      • Terminal: J17-22 (LRDD) - J17-10 (SGND)
      • Gauge set: 2 V/DIV, 10 msec./DIV
      • Condition: Engine switch on (IG)
        Fig 2: Identifying Waveform 1
        G05252184Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Reference: waveform 2

      HINT

      • Terminal J17-23 (LRRD) - J17-10 (SGND)
      • Gauge set. 2 V/DIV, 5 msec./DIV.
      • Condition. Engine switch on (IG)
      Fig 3: Identifying Waveform 2
      G05252185Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. CHECK ECM (for 2UR-GSE) 
    Fig 4: Identifying Terminals Of ECU Connector
    G05750600Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    ECU CONNECTOR TERMINALS REFERENCE CHART

    Terminal No (Symbol) Wiring Color Terminal Description Condition Specified Condition
    A5-12 (ST1-) - E6-1 (E1) G-W - W-B Stop light signal Engine switch on (IG), Brake pedal depressed (Stop light switch on) Below 1 V
    A5-12 (ST1-) - E6-1 (E1) G-W - W-B Stop light signal Engine switch on (IG), Brake pedal released (Stop light switch off) 11 to 14 V
    A5-13 (STP) - E6-1 (E1) R-B - W-B Stop light signal Brake pedal released (Stop light switch off) Below 1 V
    A5-13 (STP) - E6-1 (E1) R-B - W-B Stop light signal Brake pedal depressed (Stop light switch on) 11 to 14 V
    A5-16 (LGND) - Body ground B - Body ground Ground Always Below 1 V
    A5-17 (CCHG) - E6-1 (E1) B-L - W-B Distance control switch signal Engine switch on (IG), Cruise control main switch on, MODE switch on Below 1 V
    A5-17 (CCHG) - E6-1 (E1) B-L - W-B Distance control switch signal Engine switch on (IG), Cruise control main switch on, MODE switch off 11 to 14 V
    A6-15 (CCS) - E6-1 (E1) L-B - W-B Cruise control main switch signal Engine switch on (IG) 11 to 14 V
    A6-15 (CCS) - E6-1 (E1) L-B - W-B Cruise control main switch signal CANCEL switch on 6 6 to 101V
    A6-15 (CCS) - E6-1 (E1) L-B - W-B Cruise control main switch signal - (COAST)/SET switch on 4 5 to 7 1 V
    A6-15 (CCS) - E6-1 (E1) L-B - W-B Cruise control main switch signal + (ACCEL)/RES (RESUME) switch on 2 3 to 4 0 V
    A6-15 (CCS) - E6-1 (E1) L-B - W-B Cruise control main switch signal Main switch on Below 1 V
    E6-1 (E1) - Body ground W-B - Body ground Ground Always Below 1 V

    If the value is not within the specified range, the ECM may have a malfunction.

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