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Terminals Of ECM

  1. ECM 
    Fig 1: Identifying ECM Connector Terminals
    G05295191Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    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 inspected. The standard voltage between the terminals is shown under "Specific Condition".

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

    VOLTAGE SPECIFICATION

    Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
    D (E7-9) - E1 (E7-7) R-W - BR D shift position switch signal Engine switch on (IG) and shift lever D and S position 10 to 14 V
    ↑ ↑ ↑ Engine switch on (IG) and shift lever except D and S position Below 1 V
    R (E7-8) - E1 (E7-7) R - BR R shift position switch signal Engine switch on (IG) and shift lever R position 10 to 14 V
    ↑ ↑ ↑ Engine switch on (IG) and shift lever except R position Below 1 V
    STP (A7-4) - E1 (E7-7) R - B - BR Stop light switch signal Brake pedal is depressed 7.5 to 14 V
    ↑ ↑ ↑ Brake pedal is released Below 1.5 V
    SFTD (A7-19) - E1 (E7-7) O - BR Down shift switch signal Engine switch on (IG) and shift lever S position 10 to 14 V
    ↑ ↑ ↑ Engine switch on (IG) and shift lever "-" position (Down shift) Below 1 V
    SFTU (A7-30) - E1 (E7-7) Y-R - BR Up shift switch signal Engine switch on (IG) and shift lever S position 10 to 14 V
    ↑ ↑ ↑ Engine switch on (IG) and shift lever "+" position (Up shift) Below 1 V
    S (A7-9) - E1 (E7-7) W-G - BR S shift position switch signal Engine switch on (IG) and shift lever S position 10 to 14 V
    ↑ ↑ ↑ Engine switch on (IG) and shift lever except S position Below 1 V
    P (E7-6) - E1 (E7-7) W - BR Park position switch signal Engine switch on (IG) and shift lever P position 10 to 14 V
    ↑ ↑ ↑ Engine switch on (IG) and shift lever except P position Below 1 V
    N (E7-32) - E1 (E7-7) G-R - BR Neutral position switch signal Engine switch on (IG) and shift lever N position 10 to 14 V
    ↑ ↑ ↑ Engine switch on (IG) and shift lever except N position Below 1 V
    STAR (E7-4) - E1 (E7-7) L-Y - BR Park neutral switch signal Engine switch on (IG) and shift lever P and N position Below 1 V
    ↑ ↑ ↑ Engine switch on (IG) and shift lever except P and N position 10 to 14 V
    SLU+ (E7-13) - SLU- (E7-12) L-Y - L-R SLU solenoid signal 5th (lock up) or 6th (lockup) gear Pulse generation (see  bwaveform 2)
    SR (E7-2) - E1 (E7-7) G-W - BR SR solenoid signal 1st, 2nd, 3rd or 4th gear 10 to 14 V
    ↑ ↑ ↑ 5th or 6th gear Below 1 V
    S4 (E7-16) - E1 (E7-7) G-R - BR S4 solenoid signal 5th or 6th gear 10 to 14 V
    ↑ ↑ ↑ 1st, 2nd, 3rd or 4th gear Below 1 V
    S3 (E7-17) - E1 (E7-7) G - BR S3 solenoid signal 1st, 2nd or 3rd gear 10 to 14 V
    ↑ ↑ ↑ 4th, 5th or 6th gear Below 1 V
    S2 (E7-18) - E1 (E7-7) W - BR S2 solenoid signal 1st, 2nd or 6th gear 10 to 14 V
    ↑ ↑ ↑ 3rd, 4th or 5th gear Below 1 V
    S1 (E7-19) - E1 (E7-7) R - BR S1 solenoid signal 1st gear Below 1 V
    ↑ ↑ ↑ Except 1st gear 10 to 14 V
    SL2+ (E7-11) - SL2- (E7-10) L-W - B-W SL2 solenoid signal Engine idle speed Pulse generation (see  cwaveform 3)
    SL1+ (E7-25) - SL1- (E7-24) Y - L SL1 solenoid signal 5th or 6th gear Pulse generation (see  dwaveform 4)
    SP2+ (E7-23) - SP2- (E7-22) L - Y Speed sensor (SP2) signal Vehicle speed 20 km/h (12 mph) Pulse generation (see  fwaveform 6)
    NT+ (E7-21) - NT- (E7-20) R - G Speed sensor (NT) signal Engine idle speed Pulse generation (see  ewaveform 5)
    SLT+ (E7-35) - SLT- (E7-34) B - G-B SLT solenoid signal Engine idle speed Pulse generation (see  awaveform 1)
    OIL (E7-27) - EOIL (E7-26) G-Y - BR ATF temperature sensor signal ATF temperature: 115°C (239°F) or more Below 1.5 V
    1. Waveform 1

      Reference: 

      WAVEFORM REFERENCE (WAVEFORM 1)

      Terminal SLT+ - SLT-
      Tool setting 5V/DIV, 1ms/DIV
      Vehicle condition Engine idle speed
      Fig 2: Waveform Graph (Waveform 1)
      G04975834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Waveform 2

      Reference: 

      WAVEFORM REFERENCE (WAVEFORM 2)

      Terminal SLU+ - SLU-
      Tool setting 5V/DIV, 1ms/DIV
      Vehicle condition 5th (lock up) or 6th (lock up) gear
      Fig 3: Waveform Graph (Waveform 2)
      G04975834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Waveform 3

      Reference: 

      WAVEFORM REFERENCE (WAVEFORM 3)

      Terminal SL2+ - SL2-
      Tool setting 5V/DIV, 1ms/DIV
      Vehicle condition Engine idle speed
      Fig 4: Waveform Graph (Waveform 3)
      G04975834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Waveform 4

      Reference: 

      WAVEFORM REFERENCE (WAVEFORM 4)

      Terminal SL1+ - SL1-
      Tool setting 5V/DIV, 1ms/DIV
      Vehicle condition 5th or 6th gear
      Fig 5: Waveform Graph (Waveform 4)
      G04975834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Waveform 5

      Reference: 

      WAVEFORM REFERENCE (WAVEFORM 5)

      Terminal NT+ - NT-
      Tool setting 1 V/DIV, 2ms/DIV
      Vehicle condition Engine idle speed (P or N position)
      Fig 6: Waveform Graph (Waveform 5)
      G05288061Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Waveform 6

      Reference: 

      WAVEFORM REFERENCE (WAVEFORM 6)

      Terminal SP2+ - SP2-
      Tool setting 2 V/DIV, 20ms/DIV
      Vehicle condition Vehicle speed 20 km/h (12 mph)
      Fig 7: Waveform Graph (Waveform 6)
      G05288062Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. COWL SIDE J/B ECU (MULTIPLEX NETWORK BODY ECU) 
    Fig 8: Identifying Cowl Side J/B ECU Connector Terminals
    G05294628Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    Each ECU 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 inspected. The standard voltage between the terminals is shown under "Specific Condition".

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

    VOLTAGE SPECIFICATION

    Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
    PWR (K68-18) - Body ground P PWR switch signal Engine switch on (IG) and Pattern select switch (PWR) ON 0 to 1.5 V
    ↑ ↑ ↑ Engine switch on (IG) and Pattern select switch (PWR) OFF Pulse generation *1
    SNOW (K68-17) - Body ground L SNOW switch signal Engine switch on (IG) and Pattern select switch (SNOW) ON 0 to 1.5 V
    ↑ ↑ ↑ Engine switch on (IG) and Pattern select switch (SNOW) OFF Pulse generation *1
    HINT:
    *1 Voltage is input intermittently as this is an intermittent circuit. (Voltage varies between a peak of 7.5 to 14 V and a low of 0 to 1.5 V.)
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