DYNAMIC RADAR CRUISE CONTROL SYSTEM(for 1AR-FE) TERMINALS OF ECU


  1. CHECK DRIVING SUPPORT ECU ASSEMBLY

    A0027Q3N47

    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
    F128-3 (BZ) - F128-28 (GND) L - W-B Skid control buzzer output Engine switch on (IG), buzzer not sounding 11 to 14 V
    Engine switch on (IG), buzzer sounding Below 1 V
    F128-7 (B) - F128-28 (GND) R - W-B Power source Engine switch on (IG) 11 to 14 V
    Engine switch off Below 1 V
    F128-8 (CA1P) - F128-28 (GND) B - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    F128-9 (CA1N) - F128-28 (GND) W - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    F128-10 (CA2H) - F128-28 (GND) G - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    F128-11 (CA2L) - F128-28 (GND) W - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    F128-23 (SPSW) - F128-28 (GND) V - W-B Steering pad switch assembly signal (distance control signal) Engine switch on (IG), steering pad switch assembly (vehicle-to-vehicle distance control switch) off 4.75 to 5.25 V
    Engine switch on (IG), steering pad switch assembly (vehicle-to-vehicle distance control switch) on Below 1 V
    F128-28 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    1. A002CBGE10

      Waveform 1


      1. CAN communication signal

        Item Content
        Tester Connection

        • Between F128-8 (CA1P) and F128-28 (GND)

        • Between F128-10 (CA2H) and F128-28 (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. A0028A6E07

      Waveform 2


      1. CAN communication signal

        Item Content
        Tester Connection

        • Between F128-9 (CA1N) and F128-28 (GND)

        • Between F128-11 (CA2L) and F128-28 (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

    A00274BN21

    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
    C1-67 (D) - C1-16 (E1) G - BR D shift position signal Engine switch on (IG), shift lever in D 11 to 14 V
    Engine switch on (IG), shift lever not in D Below 1 V
    A43-27 (S) - C1-16 (E1) LG - BR S shift position signal Engine switch on (IG), shift lever in S 11 to 14 V
    Engine switch on (IG), shift lever not in S Below 1 V
    A43-11 (STP) - C1-16 (E1) G - BR Stop light switch assembly signal Brake pedal depressed 11 to 14 V
    Brake pedal released Below 1 V
    A43-40 (CCS) - C1-16 (E1) R - BR Cruise control main switch circuit Cruise control main switch (ON-OFF button) not pushed 1 MΩ or higher
    Cruise control main switch (ON-OFF button) pushed 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
    A43-24 (ST1-) - C1-16 (E1) L - BR Stop light switch assembly signal Engine switch on (IG), brake pedal depressed Below 1 V
    Engine switch on (IG), brake pedal released 11 to 14 V
    A43-43 (SFTD) - C1-16 (E1) SB - BR Down-shift position switch signal Engine switch on (IG), shift lever in S 11 to 14 V
    Engine switch on (IG), shift lever in "-" Below 1 V
    A43-42 (SFTU) - C1-16 (E1) V - BR Up-shift position switch signal Engine switch on (IG), shift lever in S 11 to 14 V
    Engine switch on (IG), shift lever in "+" Below 1 V

  3. CHECK MILLIMETER WAVE RADAR SENSOR

    A00294GN33
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    A81-1 (SGND) - Body ground BR - Body ground Ground Always Below 1 Ω
    A81-2 (CA2L) - A81-1 (SGND) W - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    A81-3 (CA2H) - A81-1 (SGND) P - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    A81-5 (CA1P) - A81-1 (SGND) B - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    A81-6 (CA1N) - A81-1 (SGND) W - BR CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    A81-8 (IGB) - A81-1 (SGND) R - BR Power source Engine switch on (IG) 11 to 14 V

    1. A002CBGE10

      Waveform 1


      1. CAN communication signal

        Item Content
        Tester Connection

        • Between A81-3 (CA2H) and A81-1 (SGND)

        • Between A81-5 (CA1P) and A81-1 (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. A0028A6E07

      Waveform 2


      1. CAN communication signal

        Item Content
        Tester Connection

        • Between A81-2 (CA2L) and A81-1 (SGND)

        • Between A81-6 (CA1N) and A81-1 (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.