DYNAMIC RADAR CRUISE CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK ECM (for 2GR-FKS)

    A01RCL8N15

    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
    D2-139 (D) - D2-53 (E1) G - BR D shift position signal Engine switch on (IG), shift lever in D 11 to 14 V
    D2-139 (D) - D2-53 (E1) G - BR D shift position signal Engine switch on (IG), shift lever not in D Below 1 V
    A37-17 (S) - D2-53 (E1) BR - BR M shift position signal Engine switch on (IG), shift lever in M 11 to 14 V
    A37-17 (S) - D2-53 (E1) BR - BR M shift position signal Engine switch on (IG), shift lever not in M Below 1 V
    A37-27 (STP) - D2-53 (E1) B - BR Stop light switch assembly signal Brake pedal depressed 11 to 14 V
    A37-27 (STP) - D2-53 (E1) B - BR Stop light switch assembly signal Brake pedal released Below 1 V
    A37-37 (SFTD) - D2-53 (E1) GR - BR Down-shift position switch signal Engine switch on (IG), shift lever in M 11 to 14 V
    A37-37 (SFTD) - D2-53 (E1) GR - BR Down-shift position switch signal Engine switch on (IG), shift lever in "-" Below 1 V
    A37-38 (SFTU) - D2-53 (E1) P - BR Up-shift position switch signal Engine switch on (IG), shift lever in M 11 to 14 V
    A37-38 (SFTU) - D2-53 (E1) P - BR Up-shift position switch signal Engine switch on (IG), shift lever in "+" Below 1 V
    A37-41 (CCS) - D2-53 (E1) G - BR Cruise control main switch circuit Cruise control main switch (ON/OFF button) not pushed 1 MΩ or higher
    A37-41 (CCS) - D2-53 (E1) G - BR Cruise control main switch circuit Cruise control main switch (ON/OFF button) pushed Below 2.5 Ω
    A37-41 (CCS) - D2-53 (E1) G - BR Cruise control main switch circuit +RES switch ON 235 to 245 Ω
    A37-41 (CCS) - D2-53 (E1) G - BR Cruise control main switch circuit -SET switch ON 617 to 643 Ω
    A37-41 (CCS) - D2-53 (E1) G - BR Cruise control main switch circuit CANCEL switch ON 1509 to 1571 Ω
    A37-42 (ST1-) - D2-53 (E1) LG - BR Stop light switch assembly signal Engine switch on (IG), brake pedal depressed Below 1 V
    A37-42 (ST1-) - D2-53 (E1) LG - BR Stop light switch assembly signal Engine switch on (IG), brake pedal released 11 to 14 V

  2. CHECK ECM (for 8AR-FTS)

    A01RCL8N16

    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
    D1-34 (D) - D1-53 (E1) G - BR D shift position signal Engine switch on (IG), shift lever in D 11 to 14 V
    D1-34 (D) - D1-53 (E1) G - BR D shift position signal Engine switch on (IG), shift lever not in D Below 1 V
    A46-59 (S) - D1-53 (E1) BR - BR M shift position signal Engine switch on (IG), shift lever in M 11 to 14 V
    A46-59 (S) - D1-53 (E1) BR - BR M shift position signal Engine switch on (IG), shift lever not in M Below 1 V
    A46-9 (STP) - D1-53 (E1) B - BR Stop light switch assembly signal Brake pedal depressed 11 to 14 V
    A46-9 (STP) - D1-53 (E1) B - BR Stop light switch assembly signal Brake pedal released Below 1 V
    A46-43 (SFTD) - A46-41 (ECCS) GR - BR Down-shift position switch signal Engine switch on (IG), shift lever in M 11 to 14 V
    A46-43 (SFTD) - A46-41 (ECCS) GR - BR Down-shift position switch signal Engine switch on (IG), shift lever in "-" Below 1 V
    A46-42 (SFTU) - A46-41 (ECCS) P - BR Up-shift position switch signal Engine switch on (IG), shift lever in M 11 to 14 V
    A46-42 (SFTU) - A46-41 (ECCS) P - BR Up-shift position switch signal Engine switch on (IG), shift lever in "+" Below 1 V
    A46-55 (CCS) - A46-41 (ECCS) G - BR Cruise control main switch circuit Cruise control main switch (ON/OFF button) not pushed 1 MΩ or higher
    A46-55 (CCS) - A46-41 (ECCS) G - BR Cruise control main switch circuit Cruise control main switch (ON/OFF button) pushed Below 2.5 Ω
    A46-55 (CCS) - A46-41 (ECCS) G - BR Cruise control main switch circuit +RES switch ON 235 to 245 Ω
    A46-55 (CCS) - A46-41 (ECCS) G - BR Cruise control main switch circuit -SET switch ON 617 to 643 Ω
    A46-55 (CCS) - A46-41 (ECCS) G - BR Cruise control main switch circuit CANCEL switch ON 1509 to 1571 Ω
    A46-10 (ST1-) - D1-53 (E1) LG - BR Stop light switch assembly signal Engine switch on (IG), brake pedal depressed Below 1 V
    A46-10 (ST1-) - D1-53 (E1) LG - BR Stop light switch assembly signal Engine switch on (IG), brake pedal released 11 to 14 V

  3. CHECK DRIVING SUPPORT ECU ASSEMBLY

    A01R99PN16

    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
    A72-3 (BZ) - A72-28 (GND) P - W-B Skid control buzzer assembly output Engine switch on (IG), buzzer not sounding 11 to 14 V
    Engine switch on (IG), buzzer sounding Below 1 V
    A72-7 (B) - A72-28 (GND) Y - W-B Power source Engine switch on (IG) 11 to 14 V
    Engine switch off Below 1 V
    A72-8 (CA1P) - A72-28 (GND) P - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    A72-9 (CA1N) - A72-28 (GND) GR - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    A72-10 (CA2H) - A72-28 (GND) B - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    A72-11 (CA2L) - A72-28 (GND) LG - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    A72-23 (SPSW) - A72-28 (GND) P - W-B Steering pad switch assembly signal (distance control signal) Engine switch on (IG), steering pad switch assembly (distance control switch) off 4.75 to 5.25 V
    Engine switch on (IG), steering pad switch assembly (distance control switch) on Below 1 V
    A72-28 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    1. A01REVYE01

      Waveform 1


      1. CAN communication signal

        Item Content
        Tester Connection

        • Between A72-8 (CA1P) and A72-28 (GND)

        • Between A72-10 (CA2H) and A72-28 (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. A01REPCE01

      Waveform 2


      1. CAN communication signal

        Item Content
        Tester Connection

        • Between A72-9 (CA1N) and A72-28 (GND)

        • Between A72-11 (CA2L) and A72-28 (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.

  4. CHECK MILLIMETER WAVE RADAR SENSOR

    A01RFSMN14
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    A70-1 (SGND) - Body ground BR - Body ground Ground Always Below 1 Ω
    A70-2 (CA2L) - A70-1 (SGND) W - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    A70-3 (CA2H) - A70-1 (SGND) B - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    A70-5 (CA1P) - A70-1 (SGND) V - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    A70-6 (CA1N) - A70-1 (SGND) L - W-B CAN communication signal Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    A70-8 (IGB) - A70-1 (SGND) R - BR Power source Engine switch on (IG) 11 to 14 V

    1. A01REVYE01

      Waveform 1


      1. CAN communication signal

        Item Content
        Tester Connection

        • Between A70-3 (CA2H) and A70-1 (SGND)

        • Between A70-5 (CA1P) and A70-1 (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. A01REPCE01

      Waveform 2


      1. CAN communication signal

        Item Content
        Tester Connection

        • Between A70-2 (CA2L) and A70-1 (SGND)

        • Between A70-6 (CA1N) and A70-1 (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.