DYNAMIC RADAR CRUISE CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK DRIVING SUPPORT ECU ASSEMBLY

    B005AFKE62

    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
    I159-3 (BZ) - I159-28 (GND) SB - 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
    I159-7 (B) - I159-28 (GND)

    LG*1 - W-B

    Y*2 - W-B

    		 Power source Engine switch on (IG)

    10.5 to 16 V*1

    11 to 14 V*2
    Engine switch off Below 1 V
    I159-8 (CA1P) - I159-28 (GND) L - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    I159-9 (CA1N) - I159-28 (GND) W - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    I159-10 (CA2H) - I159-28 (GND) V - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    I159-11 (CA2L) - I159-28 (GND) W - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    I159-23 (SPSW) - I159-28 (GND) P - W-B Steering pad switch assembly signal (distance control signal) Engine switch on (IG), vehicle-to-vehicle distance control switch (steering pad switch assembly) off 4.75 to 5.25 V
    Engine switch on (IG), vehicle-to-vehicle distance control switch (steering pad switch assembly) on Below 1 V
    I159-28 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    • *1: w/ Stop and Start System

    • *2: w/o Stop and Start System


    1. B005A92E17

      Waveform 1


      1. CAN communication signal

        Item Content
        Tester Connection

        • Between I159-8 (CA1P) and I159-28 (GND)

        • Between I159-10 (CA2H) and I159-28 (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. B0059KNE13

      Waveform 2


      1. CAN communication signal

        Item Content
        Tester Connection

        • Between I159-9 (CA1N) and I159-28 (GND)

        • Between I159-11 (CA2L) and I159-28 (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)

    B0058VYE04

    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
    A35-9 (STP) - C20-53 (E1) L - W-B Stop light switch assembly signal Brake pedal depressed 7.5 to 14 V
    Brake pedal released 0 to 1.5 V
    A35-10 (ST1-) - C20-53 (E1) G - W-B Stop light switch assembly signal Engine switch on (IG), brake pedal depressed 0 to 1.5 V
    Engine switch on (IG), brake pedal released 7.5 to 14 V
    A35-55 (CCS) - A35-41 (ECCS) V - L Cruise control main switch circuit Cruise control main switch (ON/OFF) not pushed 1 MΩ or higher
    Cruise control main switch (ON/OFF) 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
    C20-34 (D) - C20-53 (E1) B - W-B D shift position signal Engine switch on (IG) and shift lever in D, M, "+" or "-" 11 to 14 V
    Engine switch on (IG) and shift lever not in D, M, "+" or "-" Below 1 V

  3. CHECK ECM (for 3ZR-FAE)

    B0058VYE05

    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
    A35-9 (STP) - C65-59 (E1) L - BR Stop light switch assembly signal Brake pedal depressed 7.5 to 14 V
    Brake pedal released 0 to 1.5 V
    A35-10 (ST1-) - C65-59 (E1) G - BR Stop light switch assembly signal Engine switch on (IG), brake pedal depressed 0 to 1.5 V
    Engine switch on (IG), brake pedal released 7.5 to 14 V
    A35-36 (CCS) - A35-35 (ECCS) V - L Cruise control main switch circuit Cruise control main switch (ON/OFF) not pushed 1 MΩ or higher
    Cruise control main switch (ON/OFF) 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
    C65-65 (D) - C65-59 (E1) L - BR D shift position signal Engine switch on (IG) and shift lever in D, M, "+" or "-" 11 to 14 V
    Engine switch on (IG) and shift lever not in D, M, "+" or "-" Below 1 V

  4. CHECK MILLIMETER WAVE RADAR SENSOR

    B0057ZYE47
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    B13-1 (SGND) - Body ground W - Body ground Ground Always Below 1 Ω
    B13-2 (CA2L) - B13-1 (SGND) B - W CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    B13-3 (CA2H) - B13-1 (SGND) L - W CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    B13-5 (CA1P) - B13-1 (SGND) SB - W CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    B13-6 (CA1N) - B13-1 (SGND) W - W CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    B13-8 (IGB) - B13-1 (SGND) R - W Power source Engine switch on (IG) 10.5 to 16 V

    1. B005A92E01

      Waveform 1


      1. CAN communication signal

        Item Content
        Tester Connection

        • Between B13-3 (CA2H) and B13-1 (SGND)

        • Between B13-5 (CA1P) and B13-1 (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. B0059KNE01

      Waveform 2


      1. CAN communication signal

        Item Content
        Tester Connection

        • Between B13-2 (CA2L) and B13-1 (SGND)

        • Between B13-6 (CA1N) and B13-1 (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.