ELECTRONIC CONTROLLED AUTOMATIC TRANSMISSION SYSTEM TERMINALS OF ECU


  1. ECM

    A01BEK5E01

    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 "Symbols (Terminal No.)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specific Condition".

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

    Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
    NSW (B9-6) - E1 (D3-7) B-W - BR Park neutral switch signal IG switch ON and shift lever P and N position Below 2 V
    IG switch ON and shift lever except P and N position 11 to 14 V
    STP (B7-15) - E1 (D3-7) R-W - BR Stop lamp switch signal Brake pedal is depressed 7.5 to 14 V
    Brake pedal is released Below 1.5 V
    CAN+ (B7-22) - E1 (D3-7) L - BR CAN communication line IG switch ON

    Pulse generation

    (See waveform 5)
    CAN- (B7-21) - E1 (D3-7) W - BR CAN communication line IG switch ON

    Pulse generation

    (See waveform 6)
    TC (B9-11) - E1 (D3-7) P - BR Terminal TC of DLC3 IG switch ON 11 to 14 V

  2. TCM

    A01BG1WE01

    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 "Symbols (Terminal No.)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specific Condition".

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

    Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
    L (O2-10) - E1 (O1-1) R - BR L shift position switch signal IG switch ON and shift lever L position 11 to 14 V
    IG switch ON and shift lever except L position Below 1 V
    2 (O2-11) - E1 (O1-1) Y - BR 2 shift position switch signal IG switch ON and shift lever 2 and L position 11 to 14 V
    IG switch ON and shift lever except 2 and L position Below 1 V
    R (O2-9) - E1 (O1-1) L - BR R shift position switch signal IG switch ON and shift lever R position 11 to 14 V
    IG switch ON and shift lever except R position Below 1 V
    D*1 (O2-8) - E1 (O1-1) R-Y - BR D shift position switch signal IG switch ON and shift lever D and 3 position 11 to 14 V
    IG switch ON and shift lever except D and 3 position Below 1 V
    3 (O2-12) - E1 (O1-1) B - BR 3 shift position switch signal IG switch ON and shift lever 3 position 11 to 14 V
    IG switch ON and shift lever except 3 position Below 1 V
    STP (O3-14) - E1 (O1-1) R-W - BR Stop lamp switch signal Brake pedal is depressed 7.5 to 14 V
    Brake pedal is released Below 1.5 V
    S2 (O1-17) - E1 (O1-1) P-L - BR S2 solenoid signal 2nd or 3rd gear 11 to 14 V
    1st or 4th gear Below 1 V
    S1 (O1-18) - E1 (O1-1) LG - BR S1 solenoid signal 1st or 2nd gear 11 to 14 V
    3rd or 4th gear Below 1 V
    SLT+ (O1-20) - SLT- (O1-19) L-B - W-L SLT solenoid signal Engine idle speed

    Pulse generation

    (See waveform 1)
    SL (O1-16) - E1 (O1-1) GR - BR SL solenoid signal IG switch ON Below 1.5 V
    Vehicle driving under lock-up position 11 to 14 V
    THOC (O1-24) - E2 (O1-23) L - Y-B ATF temperature sensor signal No.1 ATF temperature: 115°C (239°F) or more Below 1.5 V
    SP2+ (O1-30) - SP2- (O1-29) R - G Speed sensor (SP2) signal Vehicle speed 20 km/h (12 mph)

    Pulse generation

    (See waveform 3)
    NCO+ (O1-3) - NCO- (O1-2) L - Y Speed sensor (NCO) signal Engine idle speed

    Pulse generation

    (See waveform 2)
    NSW (O1-12) - E1 (O1-1) B-W - BR Park neutral switch signal IG switch ON and shift lever P and N position Below 2 V
    IG switch ON and shift lever except P and N position 11 to 14 V
    STA (O1-11) - E1 (O1-1) R - BR Starter signal Cranking (shift lever position P or N position, ignition switch START) 6 V or more
    IG switch ON and shift lever except P and N position 11 to 14 V
    SPD1 (O3-25) - E1 (O1-1) P-L - BR Speed signal from combination meter Vehicle speed 20 km/h (12 mph)

    Pulse generation

    (See waveform 4)
    +B (O3-5) - E1 (O1-1) B-R - BR Battery (for measuring battery voltage and for TCM memory) Always 11 to 14 V
    IG2 (O3-6) - E1 (O1-1) B-R - BR Ignition switch Ignition switch ON 11 to 14 V
    CAN+ (O3-21) - E1 (O1-1) L - BR CAN communication line Ignition switch ON

    Pulse generation

    (See waveform 5)
    CAN- (O3-20) - E1 (O1-1) W - BR CAN communication line Ignition switch ON

    Pulse generation

    (See waveform 6)

    Tech Tips

    *1: 2KD-FTV only


    1. A01BAFDE05

      Waveform 1

      Reference:
      Terminal SLT+ - SLT-
      Tool setting 5 V/DIV, 1ms/DIV
      Vehicle condition Engine idle speed
    2. A01BEP7E03

      Waveform 2

      Reference:
      Terminal NCO+ - NCO-
      Tool setting 5 V/DIV, 0.5 ms/DIV
      Vehicle condition Engine idle speed (P or N position)
    3. A01BEVUE05

      Waveform 3

      Reference:
      Terminal SP2+ - SP2-
      Tool setting 2 V/DIV, 20 ms/DIV
      Vehicle condition Vehicle speed 20 km/h (12 mph)
    4. A01BFNHE02

      Waveform 4

      Reference:
      Terminal SPD1 - E1
      Tool setting 5 V/DIV, 20 ms/DIV
      Vehicle condition Vehicle speed 20 km/h (12 mph)
    5. A01BBOLE06

      Waveform 5

      Reference:
      Terminal CAN+ - E1
      Tool setting 1 V/DIV, 10 ms/DIV
      Vehicle condition Engine is stopped, ignition ON
    6. A01BGF1E05

      Waveform 6

      Reference:
      Terminal CAN- - E1
      Tool setting 1 V/DIV, 10 ms/DIV
      Vehicle condition Engine is stopped, ignition ON