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Terminals Of ECM

  1. ECM 
    Fig 1: Identifying Terminals Of ECM
    G04377323Courtesy 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 Fig 1 above as a reference for the ECM terminals.

    *1 : w/ Smart Key System

    *2 : w/o Smart Key System

    ECM TERMINALS VOLTAGE SPECIFIED CONDITION

    Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
    D (D41-21) - E1 (B47-1) W - BR D shift position switch signal Ignition switch on (IG) and shift lever D and S position 10 to 14 V
    Ignition switch on (IG) and shift lever except D and S position Below 1 V
    R (D41-11) - E1 (B47-1) P - BR R shift position switch signal Ignition switch on (IG) and shift lever R position 10 to 14 V
    Ignition switch on (IG) and shift lever except R position Below 1 V
    SPD (D41-8) - E1 (B47-1) GR - BR Speed signal Vehicle speed 20 km/h (12mph) Pulse generation (See   Waveform 8)
    STP (A24-15) - E1 (B47-1) W - BR Stop light switch signal Brake pedal is depressed 7.5 to 14 V
    Brake pedal is released Below 1.5 V
    SFTD (D41-5) - E1 (B47-1) W - BR Down shift switch signal Ignition switch on (IG) and shift lever S position 10 to 14 V
    Ignition switch on (IG) and shift lever "-" position (Down shift) Below 1 V
    SFTU (D41-6) - E1 (B47-1) R - BR Up shift switch signal Ignition switch on (IG) and shift lever S position 10 to 14 V
    Ignition switch on (IG) and shift lever "+" position (Up shift) Below 1 V
    S (D41-20) - E1 (B47-1) L - BR S shift position switch signal Ignition switch on (IG) and shift lever S position 10 to 14 V
    Ignition switch on (IG) and shift lever except S position Below 1 V
    P (D41-23) - E1 (B47-1) G-W - BR Park position switch signal Ignition switch on (IG) and shift lever P position 10 to 14 V
    Ignition switch on (IG) and shift lever except P position Below 1 V
    N (D41-22) - E1 (B47-1) O - BR Neutral position switch signal Ignition switch on (IG) and shift lever N position 10 to 14 V
    Ignition switch on (IG) and shift lever except N position Below 1 V
    STAR (B46-8) - E1 (B47-1) B-W*1 - BR
    W-R*2 - BR    		 Park neutral switch signal Ignition switch on (IG) and shift lever P and N position Below 1 V
    Ignition switch on (IG) and shift lever except P and N position 10 to 14 V
    DSL (B46-11) - E1 (B47-1) G-R - BR DSL solenoid signal Vehicle speed 65 km/h (40mph), lock-up (ON to OFF) Pulse generation (See   Waveform 2)
    SR (B46-9) - E1 (B47-1) L-B - BR SR solenoid signal Ignition switch on (IG) Below 1 V
    3rd, 4th or 5th gear 10 to 14 V
    1st or 2nd gear Below 1 V
    S4 (B46-10) - E1 (B47-1) W-L - BR S4 solenoid signal Ignition switch on (IG) Below 1 V
    5th gear 10 to 14 V
    Except 5th gear Below 1 V
    SL3+ (B46-17) - SL3- (B46-16) W - B-W SL3 solenoid signal Engine idle speed Pulse generation (See   Waveform 3)
    SL2+ (B46-15) - SL2- (B46-14) Y - L SL2 solenoid signal Engine idle speed Pulse generation (See   Waveform 4)
    SL1+ (B46-19) - SL1- (B46-18) G - P SL1 solenoid signal Engine idle speed Pulse generation (See   Waveform 5)
    NC+ (B46-34) - NC- (B46-26) L-B - G-R Speed sensor (NC) signal Vehicle speed 30 km/h (19mph): (3rd gear)
    Engine speed 1,400 rpm    		 Pulse generation (See   Waveform 6)
    NT+ (B46-35) - NT- (B46-27) W-L - L Speed sensor (NT) signal Vehicle speed 20 km/h (12mph) Pulse generation (See   Waveform 7)
    SLT+ (B46-13) - SLT- (B46-12) R - G SLT solenoid signal Engine idle speed Pulse generation (See   Waveform 1)
    THO1 (B46-24) - E2 (B45-28) W-R - W ATF temperature sensor signal ATF temperature: 115°C (239°F) or more Below 1.5 V
    1. Waveform 1
      Fig 2: Identifying Voltage Waveform Pattern
      G04089028Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Reference: 

      WAVEFORM REFERENCE

      Terminal SLT+ - SLT-
      Tool setting 5 V/DIV, 1ms/DIV
      Vehicle condition Engine idle speed
    2. Waveform 2
      Fig 3: Displaying Waveform 2
      G04377325Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Reference: 

      WAVEFORM REFERENCE

      Terminal DSL - E1
      Tool setting 10 V/DIV, 100ms/DIV
      Vehicle condition Vehicle speed 65 km/h (40 mph), lock-up (ON to OFF)
    3. Waveform 3
      Fig 4: Identifying Voltage Waveform Pattern
      G04089028Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Reference: 

      WAVEFORM REFERENCE

      Terminal SL3+ - SL3-
      Tool setting 5 V/DIV, 1ms/DIV
      Vehicle condition Engine idle speed
    4. Waveform 4
      Fig 5: Identifying Voltage Waveform Pattern
      G04089028Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Reference: 

      WAVEFORM REFERENCE

      Terminal SL2+ - SL2-
      Tool setting 5 V/DIV, 1ms/DIV
      Vehicle condition Engine idle speed
    5. Waveform 5
      Fig 6: Displaying Waveform 5
      G04377328Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Reference: 

      WAVEFORM REFERENCE

      Terminal SL1+ - SL1-
      Tool setting 5 V/DIV, 1ms/DIV
      Vehicle condition Engine idle speed
    6. Waveform 6
      Fig 7: Identifying Waveform
      G04431304Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Reference: 

      WAVEFORM REFERENCE

      Terminal NC+ - NC-
      Tool setting 1 V/DIV, 1ms/DIV
      Vehicle condition Vehicle speed 30 km/h (19 mph): (3rd gear)
      Engine speed 1.400 rpm
    7. Waveform 7
      Fig 8: Identifying Waveform
      G04431281Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Reference: 

      WAVEFORM REFERENCE

      Terminal NT+ - NT-
      Tool setting 5 V/DIV, 0.5ms/DIV
      Vehicle condition Vehicle speed 20 km/h (12 mph)
    8. Waveform 8
      Fig 9: Displaying Waveform 8
      G04377331Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Reference: 

      WAVEFORM REFERENCE

      Terminal SPD - E1
      Tool setting 5 V/DIV, 20ms/DIV
      Vehicle condition Vehicle speed 20 km/h (12 mph)

      HINT:

      Depending on the vehicle, the output waveform voltage, influenced by optionally installed systems, may become 5V.

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