DYNAMIC RADAR CRUISE CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK DRIVING SUPPORT ECU ASSEMBLY

    B003WF3N40

    Note

    Do not apply excessive force to the connector. If a force of 10 kg or more is applied, the connector may be broken.

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    M2-23 (SPSW) - M2-28 (GND) W - BR Steering pad switch assembly signal (distance control signal) Engine switch on (IG), Steering pad switch assembly (vehicle-to-vehicle distance control switch) off 9.8 to 13.2 V
    Engine switch on (IG), Steering pad switch assembly (vehicle-to-vehicle distance control switch) on Below 1 V
    M2-17 (CCS) - M2-28 (GND) B - BR Cruise control switch circuit Cruise control switch off 1 MΩ or higher
    Cruise control switch ON Below 2.5 Ω
    +RES switch ON 235 to 245 Ω
    -SET switch ON 617 to 643 Ω
    CANCEL switch ON 1509 to 1571 Ω
    M2-28 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω
    M2-15 (STP-) - M2-28 (GND) R - BR Stop light switch assembly signal Brake pedal released 0.5 to 1.5 V
    Brake pedal depressed 7.5 to 14 V
    M2-1 (ST1-) - M2-28 (GND) P - BR Stop light switch assembly signal (opposite to STP terminal) Engine switch on (IG), Brake pedal released 7.5 to 14 V
    Engine switch on (IG), Brake pedal depressed 0.5 to 1.5 V
    M2-7 (B) - M2-28 (GND) B - BR Power source Engine switch on (IG) 11 to 14 V
    Engine switch off Below 1 V
    M2-3 (BZ) - M2-28 (GND) SB - BR Skid control buzzer output Engine switch on (IG), buzzer not sounding 11 to 14 V
    Engine switch on (IG), buzzer sounding Below 1 V
    M2-8 (CA1P) - M2-28 (GND) G - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    M2-9 (CA1N) - M2-28 (GND) B - BR

    Pulse generation

    (See waveform 2)
    M2-10 (CA2H) - M2-28 (GND) G - BR

    Pulse generation

    (See waveform 1)
    M2-11 (CA2L) - M2-28 (GND) B - BR

    Pulse generation

    (See waveform 2)

    1. B003TCSE01

      Waveform 1


      1. CAN communication signal

        Item Content
        Tester Connection

        • Between M2-8 (CA1P) and M2-28 (GND)

        • Between M2-10 (CA2H) and M2-28 (GND)
        Tool Setting 1 V/DIV., 10 μsec./DIV.
        Condition Engine switch on (IG)

        Tech Tips

        The waveform varies depending on the CAN communication signal.

    2. B003UCJE01

      Waveform 2


      1. CAN communication signal

        Item Content
        Tester Connection

        • Between M2-9 (CA1N) and M2-28 (GND)

        • Between M2-11 (CA2L) and M2-28 (GND)
        Tool Setting 1 V/DIV., 10 μsec./DIV.
        Condition Engine switch on (IG)

        Tech Tips

        The waveform varies depending on the CAN communication signal.

  2. CHECK ECM (for 8AR-FTS)

    B003TADN03

    Tech Tips

    The standard voltage, resistance and waveform between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals is also indicated. The result of checks should be compared with the standard voltage, resistance and waveform for each pair of the terminals as 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
    A91-1 (BATT) - F78-53 (E1) L - W-B Constant power source Always 11 to 14 V
    A91-43 (SFTD) - F78-53 (E1) P - W-B Down shift switch signal Engine switch on (IG) and shift lever in M 11 to 14 V
    Engine switch on (IG) and shift lever in (-) Below 1 V
    A91-42 (SFTU) - F78-53 (E1) V - W-B Up shift switch signal Engine switch on (IG) and shift lever in M 11 to 14 V
    Engine switch on (IG) and shift lever in (+) Below 1 V
    F78-34 (D) - F78-53 (E1) W - W-B Shift position signal Engine switch on (IG) and shift lever in D or M 11 to 14 V
    Engine switch on (IG) and shift lever in other than D or M Below 1 V
    A91-59 (S) - F78-53 (E1) GR - W-B Shift position signal Engine switch on (IG) and shift lever in M 11 to 14 V
    Engine switch on (IG) and shift lever in other than M Below 1 V

  3. CHECK ECM (for 2GR-FKS)

    B003TADN23

    Tech Tips

    The standard voltage, resistance and waveform between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals is also indicated. The result of checks should be compared with the standard voltage, resistance and waveform for each pair of the terminals as displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.

    Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
    A108-1 (BATT) - F103-53 (E1) L - BR Constant power source Always 11 to 14 V
    A108-37 (SFTD) - F103-53 (E1) P - BR Down shift switch signal Engine switch on (IG) and shift lever in M 11 to 14 V
    Engine switch on (IG) and shift lever in (-) Below 1 V
    A108-38 (SFTU) - F103-53 (E1) V - BR Up shift switch signal Engine switch on (IG) and shift lever in M 11 to 14 V
    Engine switch on (IG) and shift lever in (+) Below 1 V
    F103-139 (D) - F103-53 (E1) W - BR Shift position signal Engine switch on (IG) and shift lever in D or M 11 to 14 V
    Engine switch on (IG) and shift lever in other than D or M Below 1 V
    A108-17 (S) - F103-53 (E1) GR - BR Shift position signal Engine switch on (IG) and shift lever in M 11 to 14 V
    Engine switch on (IG) and shift lever in other than M Below 1 V

  4. CHECK MILLIMETER WAVE RADAR SENSOR

    B003WRME24
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    B10-1 (SGND) - Body ground BR - Body ground Ground Always Below 1 Ω
    B10-2 (CA2L) - B10-1 (SGND) B - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    B10-3 (CA2H) - B10-1 (SGND) L - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    B10-5 (CA1P) - B10-1 (SGND) LG - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    B10-6 (CA1N) - B10-1 (SGND) B - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    B10-8 (IGB) - B10-1 (SGND) G - BR Power source Engine switch on (IG) 11 to 14 V

    1. B003TCSE10

      Waveform 1


      1. CAN communication signal

        Item Content
        Tester Connection

        • Between B10-3 (CA2H) and B10-1 (SGND)

        • Between B10-5 (CA1P) and B10-1 (SGND)
        Tool Setting 1 V/DIV., 10 μsec./DIV.
        Condition Engine switch on (IG)

        Tech Tips

        The waveform varies depending on the CAN communication signal.

    2. B003UCJE07

      Waveform 2


      1. CAN communication signal

        Item Content
        Tester Connection

        • Between B10-2 (CA2L) and B10-1 (SGND)

        • Between B10-6 (CA1N) and B10-1 (SGND)
        Tool Setting 1 V/DIV., 10 μsec./DIV.
        Condition Engine switch on (IG)

        Tech Tips

        The waveform varies depending on the CAN communication signal.