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Terminals Of ECM

  1. ECM 
    Fig 1: Identifying ECM Connector Terminal
    G06043062Courtesy 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.

    VOLTAGE SPECIFICATION

    Terminals No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
    B29-56 (D) - B29-104 (E1) P - BR D shift position switch signal Ignition switch ON and shift lever D and 3 position 11 to 14 V
    Ignition switch ON and shift lever except D and 3 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  gwaveform 7)
    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
    A37-26 (3) - B29-104 (E1) O - BR 3 shift position switch signal Ignition switch ON and shift lever 3 position 11 to 14 V
    Ignition switch ON and shift lever except 3 position Below 1 V
    B29-55 (2) - B29-104 (E1) BR - BR 2 shift position switch signal Ignition switch ON and shift lever 2 position 11 to 14 V
    Ignition switch ON and shift lever except 2 position Below 1 V
    B29-74 (L) - B29-104 (E1) GR - BR L shift position switch signal Ignition switch ON and shift lever L position 11 to 14 V
    Ignition switch ON and shift lever except L position Below 1 V
    B29-73 (P) - B29-104 (E1) V - BR P shift 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 N shift 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)
    B29-78 (S4) - B29-104 (E1) W - BR S4 solenoid signal Ignition switch ON Below 1 V
    4th gear 11 to 14 V
    Except 4th gear Below 1 V
    B29-58 (SL2+) - B29-59 (SL2-) GR - L SL2 solenoid signal Engine idle speed Pulse generation (See  cwaveform 3)
    Ignition switch ON Below 1 V
    1st or 2nd gear 11 to 14 V
    3rd or O/D gear Below 1 V
    B29-57 (SL1+) - B29-77 (SL1-) G - P-G SL1 solenoid signal Engine idle speed Pulse generation (See  dwaveform 4)
    Ignition switch ON 11 to 14 V
    1st gear 11 to 14 V
    Except 1 st gear Below 1 V
    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  ewaveform 5)
    B29-125 (NT+) - B29-124 (NT-) B - Y Speed sensor (NT) signal Vehicle speed 20 km/h (12 mph) Pulse generation (See  fwaveform 6)
    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: Identifying Waveform 1
      G04963153Courtesy 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: Identifying Waveform 2
      G04975833Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Waveform 3

      Reference: 

      WAVEFORM REFERENCE

      Terminal SL2+ - SL2-
      Tool setting 5 V/DIV., 1 ms./DIV.
      Vehicle condition Engine idle speed
      Fig 4: Identifying Waveform 3
      G06043065Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Waveform 4

      Reference: 

      WAVEFORM REFERENCE

      Terminal SL1+ - SL1-
      Tool setting 5 V/DIV., 1 ms./DIV.
      Vehicle condition Engine idle speed
      Fig 5: Identifying Waveform 4
      G04963153Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Waveform 5

      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 6: Identifying Waveform 5
      G05000480Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Waveform 6

      Reference: 

      WAVEFORM REFERENCE

      Terminal NT+ - NT-
      Tool setting 5V/DIV., 0.5 ms./DIV.
      Vehicle condition Vehicle speed 20 km/h (12 mph)
      Fig 7: Identifying Waveform 6
      G04975838Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Waveform 7

      Reference: 

      WAVEFORM REFERENCE

      Terminal SPD - E1
      Tool setting 5V/DIV., 20 ms./DIV.
      Vehicle condition Vehicle speed 20 km/h (12 mph)
      Fig 8: Identifying Waveform 7
      G04975839Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

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

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