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Terminals Of ECM

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  1. ECM 
    Fig 1: Identifying Terminals Of ECM
    G06043684Courtesy 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 "Terminal No. (Symbols)" for the terminals to inspected. The standard voltage between the terminals is shown under "Specified Condition".

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

    CONNECTOR TERMINAL WIRING COLOR REFERENCE

    Terminals No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
    B29-56 (D) - B29-104 (E1) P-G - BR D shift position switch signal Ignition switch ON and shift lever D and S position 11 to 14 V
    Ignition switch ON and shift lever except D and S position Below 1 V
    B29-53 (R) - B29-104 (E1) R - BR R shift position switch signal Ignition switch ON and shift lever R position 11 to 14 V
    Ignition switch ON and shift lever except R position Below 1 V
    A37-8 (SPD) - B29-104 (E1) V - BR Speed signal Vehicle speed 20 km/h (12 mph) Pulse generation (See  hwaveform 8)
    A37-36 (STP) - B29-104 (E1) L - BR Stop light switch signal Brake pedal is depressed 7.5 to 14 V
    Brake pedal is released Below 1.5 V
    A37-51 (SFTD) - B29-104 (E1) R - BR Down shift switch signal Ignition switch ON and shift lever S position 11 to 14 V
    Ignition switch ON and shift lever"-" position (Down shift) Below 1 V
    A37-16 (SFTU) - B29-104 (E1) W - BR Up shift switch signal Ignition switch ON and shift lever S position 11 to 14 V
    Ignition switch ON and shift lever "+" position (Up shift) Below 1 V
    B29-74 (S) - B29-104 (E1) L - BR S shift position switch signal Ignition switch ON and shift lever S position 11 to 14 V
    Ignition switch ON and shift lever except S position Below 1 V
    B29-73 (P) - B29-104 (E1) V - BR Park position switch signal Ignition switch ON and shift lever P position 11 to 14 V
    Ignition switch ON and shift lever except P position Below 1 V
    B29-54 (N) - B29-104 (E1) B - BR Neutral position switch signal Ignition switch ON and shift lever N position 11 to 14 V
    Ignition switch ON and shift lever except N position Below 1 V
    B29-52 (NSW) - B29-104 (E1) W - BR Park neutral switch signal Ignition switch ON and shift lever P and N position Below 2 V
    Ignition switch ON and shift lever except P and N position 11 to 14 V
    B29-79 (DSL) - B29-104 (E1) R - BR DSL solenoid signal Vehicle speed 65 km/h (40 mph), lock-up (ON to OFF) Pulse generation (See  bwaveform 2)
    B29-80 (SR) - B29-104 (E1) Y - BR SR solenoid signal Ignition switch ON Below 1 V
    3rd, 4th or 5th gear 11 to 14 V
    1st or 2nd gear Below 1 V
    B29-78 (S4) - B29-104 (E1) W - BR S4 solenoid signal Ignition switch ON Below 1 V
    5th gear 11 to 14 V
    Except 5th gear Below 1 V
    B29-60 (SL3+) - B29-61 (SL3-) V - B SL3 solenoid signal Engine idle speed Pulse generation (See  cwaveform 3)
    B29-58 (SL2+) - B29-59 (SL2-) GR - L SL2 solenoid signal Engine idle speed Pulse generation (See  dwaveform 4)
    B29-57 (SL1+) - B29-77 (SL1-) G - P-G SL1 solenoid signal Engine idle speed Pulse generation (See  ewaveform 5)
    B29-101 (NC+) - B29-102 (NC-) R - W Speed sensor (NC) signal Vehicle speed 30 km/h (19 mph): (3rd gear) Engine speed 1,400 rpm Pulse generation (See  fwaveform 6)
    B29-125 (NT+) - B29-124 (NT-) B - Y Speed sensor (NT) signal Vehicle speed 20 km/h (12 mph) Pulse generation (See  gwaveform 7)
    B29-76 (SLT+) - B29-75 (SLT-) LG - V SLT solenoid signal Engine idle speed Pulse generation (See  awaveform 1)
    B29-72 (THO1) - B29-95 (ETHO) Y - P ATF temperature sensor signal ATF temperature: 115°C (239°F) or more Below 1.5 V
    1. Waveform 1

      Reference: 

      WAVEFORM REFERENCE

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

      Reference: 

      WAVEFORM REFERENCE

      Terminal DSL - E1
      Tool setting 10 V/DIV, 100 ms/DIV
      Vehicle condition Vehicle speed 65 km/h (40 mph), lock-up (ON to OFF)
      Fig 3: Waveform Graph 2
      G04975833Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Waveform 3

      Reference: 

      WAVEFORM REFERENCE

      Terminal SL3+ - SL3-
      Tool setting 5 V/DIV, 1 ms/DIV
      Vehicle condition Engine idle speed
      Fig 4: Waveform Graph 3
      G04975834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Waveform 4

      Reference: 

      WAVEFORM REFERENCE

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

      Reference: 

      WAVEFORM REFERENCE

      Terminal SL1+ - SL1-
      Tool setting 5 V/DIV, 1 ms/DIV
      Vehicle condition Engine idle speed
      Fig 6: Waveform Graph 5
      G05136944Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Waveform 6

      Reference: 

      WAVEFORM REFERENCE

      Terminal NC+ - NC-
      Tool setting 1 V/DIV, 1 ms/DIV
      Vehicle condition Vehicle speed 30 km/h (19 mph): (3rd gear)
      Engine speed 1.400 rpm
      Fig 7: Waveform Graph 6
      G05000480Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Waveform 7

      Reference: 

      WAVEFORM REFERENCE

      Terminal NT+ - NT-
      Tool setting 5 V/DIV, 0.5 ms/DIV
      Vehicle condition Vehicle speed 20 km/h (12 mph)
      Fig 8: Waveform Graph 7
      G04975838Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Waveform 8

      Reference: 

      WAVEFORM REFERENCE

      Terminal SPD - E1
      Tool setting 5 V/DIV, 20 ms/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.

      Fig 9: Waveform Graph 8
      G04975839Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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