CRUISE CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK ECM (for 1GR-FE)

    B003JIQE28

    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
    C83-12 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
    C85-22 (D) - C83-12 (E1) GR - 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
    G144-24 (BATT) - C83-12 (E1) Y - BR Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V
    G145-9 (SFTD) - C83-12 (E1) G - 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
    Ignition switch ON and "-" shift paddle operated (down-shift)
    G145-15 (SFTU) - C83-12 (E1) W - 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
    Ignition switch ON and "+" shift paddle operated (up-shift)
    G145-22 (S) - C83-12 (E1) L - 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
    G145-1 (CCS) - C83-12 (E1) G - 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
    G145-34 (ST1-) - C83-12 (E1) GR - 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
    G145-35 (STP) - C83-12 (E1) L - 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)

    B003PYOC13
    *A for Automatic Transmission *B for Manual Transmission

    Tech Tips

    The standard voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard voltage for that pair of terminals, 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
    C146-3 (E1) - Body ground W-B - Body ground Ground Always Below 1 Ω
    C148-17 (SFTU) - C146-3 (E1)*2 W - W-B 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
    Ignition switch ON and "+" shift paddle operated (up-shift)*3
    C148-27 (SFTD) - C146-3 (E1)*2 G - W-B 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
    Ignition switch ON and "-" shift paddle operated (down-shift)*3
    C148-30 (S) - C146-3 (E1)*2 L - 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
    G142-18 (D) - C146-3 (E1) P - W-B Clutch switch signal*1 Ignition switch ON, clutch pedal depressed Below 1 V
    Ignition switch ON, clutch pedal released 11 to 14 V
    D shift position signal*2 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
    G142-22 (CCS) - G142-21 (ECCS) G - 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
    G143-3 (BATT) - C146-3 (E1) Y - W-B Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V
    G143-10 (STP) - C146-3 (E1) L - W-B Stop light switch assembly signal Brake pedal depressed 7.5 to 14 V
    Brake pedal released Below 1.5 V
    G143-11 (ST1-) - C146-3 (E1) GR - W-B

    Stop light switch assembly signal

    (opposite to 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

    • *1: for Manual Transmission

    • *2: for Automatic Transmission

    • *3: w/ Transmission Shift Switch Assembly

  3. CHECK ECM (for 1GD-FTV, 2GD-FTV)

    B003Q1QE26

    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
    C38-14 (D) - C41-1 (E1) GR - W-B Clutch switch signal*1 Ignition switch ON, clutch pedal depressed Below 1 V
    Ignition switch ON, clutch pedal released 11 to 14 V
    D shift position signal*2 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
    C41-1 (E1) - Body ground W-B - Body ground Ground Always Below 1 Ω
    G49-13 (S) - C41-1 (E1)*2 L - 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
    G49-20 (SFTD) - C41-1 (E1)*2 G - 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
    Ignition switch ON and "-" shift paddle operated (down-shift)*3
    G49-21 (SFTU) - C41-1 (E1)*2 W - 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
    Ignition switch ON and "+" shift paddle operated (up-shift)*3
    G50-1 (BATT) - C41-1 (E1) Y - W-B Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V
    G50-12 (ST1-) - C41-1 (E1) GR - 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
    G50-13 (STP) - C41-1 (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
    G50-26 (CCS) - C41-1 (E1) G - 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

    • *1: for Manual Transmission

    • *2: for Automatic Transmission

    • *3: w/ Transmission Shift Switch Assembly