CRUISE CONTROL SYSTEM(for Diesel) TERMINALS OF ECU


  1. CHECK DRIVING SUPPORT ECU ASSEMBLY

    A01VIOQE02
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    F121-30 (B) - F121-25 (GND) LG - W-B Battery Always 11 to 14 V
    F121-28 (ST1-) - F121-25 (GND) R - W-B Stop light switch signal Ignition switch ON, Brake pedal released 11 to 14 V
    F121-28 (ST1-) - F121-25 (GND) R - W-B Stop light switch signal Ignition switch ON, Brake pedal depressed Below 1 V
    F121-27 (STP-) - F121-25 (GND) G - W-B Stop light switch signal Brake pedal released Below 1 V
    F121-27 (STP-) - F121-25 (GND) G - W-B Stop light switch signal Brake pedal depressed 11 to 14 V
    F121-25 (GND) - Body ground W-B - Body ground Earth (ground) circuit of driving support ECU assembly Always Below 1 Ω
    F121-23 (CCS) - F121-25 (GND) G - W-B Cruise control switch circuit Ignition switch ON 1 MΩ or higher
    F121-23 (CCS) - F121-25 (GND) G - W-B Cruise control switch circuit Ignition switch ON, Cruise control switch on Below 2.5 Ω
    F121-23 (CCS) - F121-25 (GND) G - W-B Cruise control switch circuit Ignition switch ON, +RES switch on 235 to 245 Ω
    F121-23 (CCS) - F121-25 (GND) G - W-B Cruise control switch circuit Ignition switch ON, -SET switch on 617 to 643 Ω
    F121-23 (CCS) - F121-25 (GND) G - W-B Cruise control switch circuit Ignition switch ON, CANCEL switch on 1509 to 1571 Ω
    F121-17 (CA2L) - F121-25 (GND) W - W-B CAN communication line Ignition switch ON

    Pulse generation

    (see waveform 1)
    F121-39 (CA2H) - F121-25 (GND) R - W-B CAN communication line Ignition switch ON

    Pulse generation

    (see waveform 2)

    1. A01VI0TE01
      *a 1 V/DIV.
      *b 10 μs/DIV.

      WAVEFORM 1


      1. CAN communication signal

        Driving Support ECU Assembly Terminal Name CA2L and GND
        Tester Range 1 V/DIV., 10 μsec./DIV.
        Condition Ignition switch ON

        Tech Tips

        The waveform varies depending on the CAN communication signal.

    2. A01VJOCE01
      *a 1 V/DIV.
      *b 10 μs/DIV.

      WAVEFORM 2


      1. CAN communication signal

        Driving Support ECU Assembly Terminal Name CA2H and GND
        Tester Range 1 V/DIV., 10 μsec./DIV.
        Condition Ignition switch ON

        Tech Tips

        The waveform varies depending on the CAN communication signal.

  2. TERMINALS OF ECM

    A01VI8ZE02

    Tech Tips

    The standard normal voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated.

    The result of the checks should be compared with the standard normal voltage for that pair of terminals, which is displayed in the Specified Condition column.

    The illustration above can be used as a reference to identify the ECM terminal locations.

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    A59-1 (+B) - A59-2 (E1) B - W-B Power source of ECM Ignition switch ON 11 to 14 V
    A59-61 (+B2) - A59-2 (E1) B - W-B Power source of ECM Ignition switch ON 11 to 14 V
    A59-23 (BATT) - A59-2 (E1) V - W-B Battery (for measuring the battery voltage and for the ECM memory) Always 11 to 14 V
    A59-7 (IGSW) - A59-2 (E1) R - W-B Ignition switch Ignition switch ON 11 to 14 V
    A59-55 (VPA) - A59-57 (EPA) R - R Accelerator pedal sensor assembly (for engine control)

    Ignition switch ON

    Accelerator pedal fully released

    		 0.6 to 1.0 V

    Ignition switch ON

    Accelerator pedal fully depressed

    		 3.0 to 4.6 V
    A59-52 (VPA2) - A59-54 (EPA2) L - B Accelerator pedal sensor assembly (for sensor malfunction detection)

    Ignition switch ON

    Accelerator pedal fully released

    		 1.4 to 1.8 V

    Ignition switch ON

    Accelerator pedal fully depressed

    		 3.7 to 5.0 V
    A59-56 (VCPA) - A59-57 (EPA) B - R Power source of accelerator pedal sensor assembly (for VPA) Ignition switch ON 4.5 to 5.0 V
    A59-53 (VCP2) - A59-54 (EPA2) W - B Power source of accelerator pedal sensor assembly (for VPA2) Ignition switch ON 4.5 to 5.0 V
    B21-1 (IJ1+) - B21-21 (IJ1-) B - W Injector Idling Pulse generation
    B21-2 (IJ2+) - B21-30 (IJ2-) R - W Injector Idling Pulse generation
    B21-3 (IJ3+) - B21-31 (IJ3-) L - Y Injector Idling Pulse generation
    B21-20 (IJ4+) - B21-32 (IJ4-) G - B Injector Idling Pulse generation
    A59-3 (CANH) - A59-2 (E1) L - W-B CAN communication line Ignition switch ON

    Pulse generation

    (See waveform 1)
    A59-4 (CANL) - A59-2 (E1) W - W-B CAN communication line Ignition switch ON

    Pulse generation

    (See waveform 2)
    A59-17 (CANP) - A59-2 (E1) B - W-B CAN communication line Ignition switch ON

    Pulse generation

    (See waveform 1)
    A59-16 (CANN) - A59-2 (E1) W - W-B CAN communication line Ignition switch ON

    Pulse generation

    (See waveform 2)

    1. A01VJOCE01
      *a 1 V/DIV.
      *b 10 μs/DIV.

      WAVEFORM 1


      1. CAN communication signal

        ECM Terminal Name

        CANH and E1

        CANP and E1
        Tester Range 1 V/DIV., 10 μs/DIV.
        Condition Engine stopped, ignition switch ON

        Tech Tips

        The waveform varies depending on the CAN communication signal.

    2. A01VI0TE01
      *a 1 V/DIV.
      *b 10 μs/DIV.

      WAVEFORM 2


      1. CAN communication signal

        ECM Terminal Name

        CANL and E1

        CANN and E1
        Tester Range 1 V/DIV., 10 μs/DIV.
        Condition Engine stopped, ignition switch ON

        Tech Tips

        The waveform varies depending on the CAN communication signal.