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Home >> Kia >> 2007 >> Magentis 2.7 4 >> Repair and Diagnosis >> External Pages >> Different car >> Section 54 (Cruise Control) >> Dynamic Radar Cruise Control System >> Terminals Of Ecu
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Terminals Of Ecu

WARNING: This page is about a different car, the 2006 Lexus IS 350 and 2006 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DISTANCE CONTROL ECU 
    Fig 1: Checking Distance Control ECU
    G04049234Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINAL SPECIFICATION CHART

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    J17-1 (B) - J17-12 (GND) B - BR Battery Always 10 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 1Ω
    J17-12 (GND) - Body ground BR - Body ground Ground Always Below 1Ω
    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) 10 to 16 V
    J17-22 (LRDD) - J17-10 (SGND) O - BR Millimeter wave radar sensor input signal Engine switch on (IG) Pulse generation (see waveform 1)
    J17-23 (LRRD) - J17-10 (SGND) L - BR Millimeter wave radar sensor output signal Engine switch on (IG) Pulse generation (see waveform 2)
    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 10 to 16 V
    1. Reference: waveform 1

      HINT:

      • Terminal: LRDD - SGND
      • Gauge set: 2 V/DIV., 10 msec./DIV.
      • Condition: Engine switch on (IG)
      Fig 2: Identifying Reference Voltage Waveform
      G04024034Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Reference: waveform 2

      HINT:

      • Terminal: LRRD - SGND
      • Gauge set: 2 V/DIV., 5 msec./DIV.
      • Condition: Engine switch on (IG)
  2. CHECK ECM SGND 
    Fig 3: Identifying Reference Voltage Waveform
    G04049263Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 4: Checking ECM Connector Terminals
    G04049237Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINAL SPECIFICATION CHART

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    A6-4 (STP) - E4-7 (E1) R-B - BR Stop light signal Brake pedal released (Stop light switch off) Below 1 V
    A6-4 (STP) - E4-7 (E1) R-B - BR Stop light signal Brake pedal depressed (Stop light switch on) 10 to 14 V
    A6-31 (CCS) - E4-7 (E1) L-B - BR Cruise control main switch signal Engine switch on (IG) 10 to 14 V
    A6-31 (CCS) - E4-7 (E1) L-B - BR Cruise control main switch signal CANCEL switch on 6.6 to 10.1 V
    A6-31 (CCS) - E4-7 (E1) L-B - BR Cruise control main switch signal - (COAST)/SET switch on 4.5 to 7.1 V
    A6-31 (CCS) - E4-7 (E1) L-B - BR Cruise control main switch signal + (ACCEL)/RES (RESUME) switch on 2.3 to 4.0 V
    A6-31 (CCS) - E4-7 (E1) L-B - BR Cruise control main switch signal Main switch on Below 1 V
    A5-8 (ST1-) - E4-7 (E1) G-W - BR Stop light signal Engine switch on (IG), Brake pedal depressed (Stop light switch on) Below 1 V
    A5-8 (ST1-) - E4-7 (E1) G-W - BR Stop light signal Engine switch on (IG), Brake pedal released (Stop light switch off) 10 to 14 V
    A5-20 (CCHG) - E4-7 (E1) R-L - BR Distance control switch signal Engine switch on (IG), Cruise control main switch on, MODE switch on Below 1 V
    A5-20 (CCHG) - E4-7 (E1) R-L - BR Distance control switch signal Engine switch on (IG), Cruise control main switch on, MODE switch off 10 to 14 V
    (1)1A5-9 (LGND) - Body ground
    (2)A5-29 (LGND) - Body ground    		 L-B - Body ground Ground Always Below 1Ω
    E4-7 (E1) - Body ground BR - Body ground Ground Always Below 1Ω
    HINT:

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

  3. CHECK MILLIMETER WAVE RADAR SENSOR 
    Fig 5: Checking Millimeter Wave Radar Sensor Connector Terminals
    G04049238Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINAL SPECIFICATION CHART

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    B9-1 (LGND) - Body ground B - Body ground Ground (Distance signal) Always Below 1Ω
    B9-2 (SGND) - Body ground BR - Body ground Ground Always Below 1Ω
    B9-3 (LRDD) - B9-2 (SGND) L-B - BR Millimeter wave radar sensor output signal Engine switch on (IG) Pulse generation (see waveform 1)
    B9-4 (LRRD) - B9-2 (SGND) LG - BR Millimeter wave radar sensor input signal Engine switch on (IG) Pulse generation (see waveform 2)
    B9-5 (IGB) - B9-2 (SGND) P - BR Power source Engine switch on (IG) 10 to 14 V
    1. Reference: waveform 1

      HINT:

      • Terminal: LRDD - SGND
      • Gauge set: 2 V/DIV., 10 msec./DIV.
      • Condition: Engine switch on (IG)
      Fig 6: Identifying Reference Voltage Waveform
      G04024034Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Reference: waveform 2

      HINT:

      • Terminal: LRRD - SGND
      • Gauge set: 2 V/DIV., 5 msec./DIV.
      • Condition: Engine switch on (IG)
Fig 7: Identifying Reference Voltage Waveform
G04049263Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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