DYNAMIC RADAR CRUISE CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK ECM (for 1GR-FE)

    B001CECE26

    Tech Tips

    Each ECM terminal's standard voltage is shown in the table below.

    In the table, first follow the information under "Condition". Look under "Terminal No. (Symbol)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specified Condition".

    Use the illustration above as a reference for the ECM terminals.

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    C36-12 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
    C34-22 (D) - C36-12 (E1) B - BR D shift position switch signal Ignition switch ON and shift lever in D, S, "+" or "-" 11 to 14 V
    Ignition switch ON and shift lever not in D, S, "+" or "-" Below 1 V
    G55-24 (BATT) - C36-12 (E1) L - BR Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V
    G56-9 (SFTD) - C36-12 (E1) LG - BR Down-shift position switch signal Ignition switch ON and shift lever in S 11 to 14 V
    Ignition switch ON and shift lever in "-" (down-shift) Below 1 V
    G56-15 (SFTU) - C36-12 (E1) GR - BR Up-shift position switch signal Ignition switch ON and shift lever in S 11 to 14 V
    Ignition switch ON and shift lever in "+" (up-shift) Below 1 V
    G56-22 (S) - C36-12 (E1) V - BR S shift position switch signal Ignition switch ON and shift lever in S, "+" or "-" 11 to 14 V
    Ignition switch ON and shift lever not in S, "+" or "-" Below 1 V
    G56-1 (CCS) - C36-12 (E1) B - BR Cruise control switch circuit Cruise control main switch off 1 MΩ or higher
    Cruise control main 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
    G56-34 (ST1-) - C36-12 (E1) B - BR Stop light switch assembly signal (opposite of voltage at STP terminal)

    Ignition switch ON,

    brake pedal depressed

    		 Below 1.5 V

    Ignition switch ON,

    brake pedal released

    		 7.5 to 14 V
    G56-35 (STP) - C36-12 (E1) V - BR Stop light switch assembly signal Brake pedal depressed 7.5 to 14 V
    Brake pedal released Below 1.5 V

  2. CHECK ECM (for 2TR-FE)

    B001I7OE19

    Tech Tips

    Each ECM terminal's standard voltage is shown in the table below.

    In the table, first follow the information under "Condition". Look under "Terminal No. (Symbol)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specified Condition".

    Use the illustration above as a reference for the ECM terminals.

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    C153-3 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
    C155-17 (SFTU) - C153-3 (E1) GR- BR Down-shift switch signal Ignition switch ON and shift lever in S 11 to 14 V
    Ignition switch ON and shift lever in "+" (up-shift) Below 1 V
    Ignition switch ON and "+" shift paddle operated (up-shift)
    C155-27 (SFTD) - C153-3 (E1) LG - BR Up-shift switch signal Ignition switch ON and shift lever in S 11 to 14 V
    Ignition switch ON and shift lever in "-" (down-shift) Below 1 V
    Ignition switch ON and "-" shift paddle operated (down-shift)
    C155-30 (S) - C153-3 (E1) V - BR S shift position switch signal Ignition switch ON and shift lever in S, "+" or "-" 11 to 14 V
    Ignition switch ON and shift lever not in S, "+" or "-" Below 1 V
    G181-18 (D) - C153-3 (E1) B - BR D shift position signal Ignition switch ON and shift lever in D, S, "+" or "-" 11 to 14 V
    Ignition switch ON and shift lever not in D, S, "+" or "-" Below 1 V
    G181-22 (CCS) - G181-21 (ECCS) B - BR Cruise control main 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
    G180-3 (BATT) - C153-3 (E1) L - BR Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V
    G180-10 (STP) - C153-3 (E1) V - BR Stop light switch assembly signal Brake pedal depressed 7.5 to 14 V
    Brake pedal released 0 to 1.5 V
    G180-11 (ST1-) - C153-3 (E1) B - BR Stop light switch assembly signal (opposite to voltage at STP terminal) Ignition switch ON, brake pedal depressed 0 to 1.5 V
    Ignition switch ON, brake pedal released 7.5 to 14 V

  3. CHECK ECM (for 1GD-FTV)

    B001G20E51

    Tech Tips

    Each ECM terminal's standard voltage is shown in the table below.

    In the table, first follow the information under "Condition". Look under "Terminal No. (Symbol)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specified Condition".

    Use the illustration above as a reference for the ECM terminals.

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    C149-14 (D) - C152-1 (E1) B - W-B D shift position signal Ignition switch ON and shift lever in D, S, "+" or "-" 11 to 14 V
    Ignition switch ON and shift lever not in D, S, "+" or "-" Below 1 V
    C152-1 (E1) - Body ground W-B - Body ground Ground Always Below 1 Ω
    G184-13 (S) - C152-1 (E1) V - W-B S shift position switch signal Ignition switch ON and shift lever in S, "+" or "-" 11 to 14 V
    Ignition switch ON and shift lever not in S, "+" or "-" Below 1 V
    G184-20 (SFTD) - C152-1 (E1) LG - W-B Down-shift switch signal Ignition switch ON and shift lever in S 11 to 14 V
    Ignition switch ON and shift lever in "-" (down-shift) Below 1 V
    G184-21 (SFTU) - C152-1 (E1) GR - W-B Up-shift switch signal Ignition switch ON and shift lever in S 11 to 14 V
    Ignition switch ON and shift lever in "+" (up-shift) Below 1 V
    G185-1 (BATT) - C152-1 (E1) L - W-B Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V
    G185-12 (ST1-) - C152-1 (E1) B - W-B

    Stop light switch assembly signal

    (opposite to voltage at STP terminal)

    Ignition switch ON,

    brake pedal depressed

    		 0 to 1.5 V

    Ignition switch ON,

    brake pedal released

    		 7.5 to 14 V
    G185-13 (STP) - C152-1 (E1) V - W-B Stop light switch assembly signal Brake pedal depressed 7.5 to 14 V
    Brake pedal released 0 to 1.5 V
    G185-26 (CCS) - C152-1 (E1) B - W-B Cruise control switch circuit Cruise control main switch off 1 MΩ or higher
    Cruise control main 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

  4. CHECK ECM (for 1KD-FTV)

    B001I80E01

    Tech Tips

    Each ECM terminal's standard voltage is shown in the table below.

    In the table, first follow the information under "Condition". Look under "Terminal No. (Symbol)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specified Condition".

    Use the illustration above as a reference for the ECM terminals.

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    C93-1 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
    G57-23 (BATT) - C93-1 (E1) L - BR Battery (for measuring the battery voltage and for the ECM memory) Always 11 to 14 V
    G57-9 (ST1-) - C93-1 (E1) B - BR

    Stop light switch assembly signal

    (opposite to voltage at STP terminal)

    Ignition switch ON,

    brake pedal depressed

    		 0 to 1.5 V

    Ignition switch ON,

    brake pedal released

    		 7.5 to 14 V
    G57-8 (STP) - C93-1 (E1) V - BR Stop light switch assembly signal Brake pedal depressed 7.5 to 14 V
    Brake pedal released 0 to 1.5 V
    G57-14 (CCS) - C93-1 (E1) B - BR Cruise control switch circuit Cruise control main switch off 1 MΩ or higher
    Cruise control main 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

  5. CHECK TCM (for 1KD-FTV)

    B001FBDE17

    Tech Tips

    Each TCM terminal's standard voltage is shown in the table below.

    In the table, first follow the information under "Condition". Look under "Terminal No. (Symbol)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specified Condition".

    Use the illustration above as a reference for the TCM terminals.

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    G71-8 (D) - G69-1 (E1) B - BR D shift position switch signal Ignition switch ON and shift lever in D, S, "+" or "-" 11 to 14 V
    Ignition switch ON and shift lever not in S, "+" or "-" Below 1 V
    G69-1 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
    G70-15 (S) - G69-1 (E1) V - BR S shift position switch signal Ignition switch ON and shift lever in S, "+" or "-" 11 to 14 V
    Ignition switch ON and shift lever not in S, "+" or "-" Below 1 V
    G70-22 (SFTU) - G69-1 (E1) GR - BR Up-shift position switch signal Ignition switch ON and shift lever in S 11 to 14 V
    Ignition switch ON and shift lever in "+" position (up-shift) Below 1 V
    G70-23 (SFTD) - G69-1 (E1) LG - BR Down-shift position switch signal Ignition switch ON and shift lever in S 11 to 14 V
    Ignition switch ON and shift lever in "-" (down-shift) Below 1 V

  6. CHECK DRIVING SUPPORT ECU ASSEMBLY

    B001F9QE59
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    G224-3 (BZ) - G224-28 (GND) SB - W-B Skid control buzzer output Ignition switch ON, buzzer not sounding 11 to 14 V
    G224-7 (B) - G224-28 (GND) G - W-B Power source Ignition switch ON 10.5 to 16 V
    G224-8 (CA1P) - G224-28 (GND) GR - W-B CAN communication signal Ignition switch ON

    Pulse generation

    (See waveform 1)
    G224-9 (CA1N) - G224-28 (GND) W - W-B CAN communication signal Ignition switch ON

    Pulse generation

    (See waveform 2)
    G224-10 (CA2H) - G224-28 (GND) G - W-B CAN communication signal Ignition switch ON

    Pulse generation

    (See waveform 1)
    G224-11 (CA2L) - G224-28 (GND) W - W-B CAN communication signal Ignition switch ON

    Pulse generation

    (See waveform 2)
    G224-23 (SPSW) - G224-28 (GND) V - W-B Steering pad switch signal (Vehicle-to-vehicle distance control switch signal) Ignition switch ON, vehicle-to-vehicle distance control switch on Below 1 Ω
    Ignition switch ON, vehicle-to-vehicle distance control switch off 4.75 to 5.25 V
    G224-28 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    1. B001E87E15
      *a 1 V/DIV.
      *b 10 μsec./DIV.

      Waveform 1


      1. CAN communication signal

        Item Content
        Terminal Name

        Between G224-8 (CA1P) and G224-28 (GND)

        Between G224-10 (CA2H) and G224-28 (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. B001DHAE18
      *a 1 V/DIV.
      *b 10 μsec./DIV.

      Waveform 2


      1. CAN communication signal

        Item Content
        Terminal Name

        Between G224-9 (CA1N) and G224-28 (GND)

        Between G224-11 (CA2L) and G224-28 (GND)
        Tester Range 1 V/DIV., 10 μsec./DIV.
        Condition Ignition switch ON

        Tech Tips

        The waveform varies depending on the CAN communication signal.

  7. CHECK MILLIMETER WAVE RADAR SENSOR

    B001DJKE45
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    A100-1 (SGND) - Body ground BR - Body ground Ground Always Below 1 Ω
    A100-2 (CA2L) - A100-1 (SGND) W - BR CAN communication signal Ignition switch ON

    Pulse generation

    (See waveform 2)
    A100-3 (CA2H) - A100-1 (SGND) V - BR CAN communication signal Ignition switch ON

    Pulse generation

    (See waveform 1)
    A100-5 (CA1P) - A100-1 (SGND) L - BR CAN communication signal Ignition switch ON

    Pulse generation

    (See waveform 1)
    A100-6 (CA1N) - A100-1 (SGND) W - BR CAN communication signal Ignition switch ON

    Pulse generation

    (See waveform 2)
    A100-8 (IGB) - A100-1 (SGND) GR-G - BR Power source Ignition switch ON 10.5 to 16 V

    1. B001E87E16
      *a 1 V/DIV.
      *b 10 μsec./DIV.

      Waveform 1


      1. CAN communication signal

        Item Content
        Terminal Name

        Between A100-3 (CA2H) and A100-1 (SGND)

        Between A100-5 (CA1P) and A100-1 (SGND)
        Tester Range 1 V/DIV., 10 μsec./DIV.
        Condition Ignition switch ON

        Tech Tips

        The waveform varies depending on the CAN communication signal.

    2. B001DHAE19
      *a 1 V/DIV.
      *b 10 μsec./DIV.

      Waveform 2


      1. CAN communication signal

        Item Content
        Terminal Name

        Between A100-2 (CA2L) and A100-1 (SGND)

        Between A100-6 (CA1N) and A100-1 (SGND)
        Tester Range 1 V/DIV., 10 μsec./DIV.
        Condition Ignition switch ON

        Tech Tips

        The waveform varies depending on the CAN communication signal.