AUTOMATIC TRANSAXLE SYSTEM TERMINALS OF ECM


  1. ECM

    A01EY56E43

    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 "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.

    Terminals No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
    E83-56 (D) - E83-104 (E1) 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
    E83-53 (R) - E83-104 (E1) B - 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
    A74-8 (SPD) - E83-104 (E1) L - BR Speed signal Vehicle speed 20 km/h (12mph)

    Pulse generation

    (See waveform 7)
    A74-36 (STP) - E83-104 (E1) BE - BR Stop light switch signal Brake pedal is depressed 7.5 to 14 V
    Brake pedal is released Below 1.5 V
    A74-51 (SFTD) - E83-104 (E1) V - 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
    A74-16 (SFTU) - E83-104 (E1) R - 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
    E83-74 (S) - E83-104 (E1) P - BR S shift position switch signal Ignition switch ON and shift lever S, "+" and "-" position 11 to 14 V
    Ignition switch ON and shift lever except S, "+" and "-" position Below 1 V
    E83-73 (P) - E83-104 (E1) GR - 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
    E83-54 (N) - E83-104 (E1) SB - 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
    E83-52 (NSW) - E83-104 (E1) LG - 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
    E83-79 (DSL) - E83-104 (E1) B - BR DSL solenoid signal Vehicle speed 65 km/h (40mph), lock-up (ON to OFF)

    Pulse generation

    (See waveform 2)
    E83-78 (S4) - E83-104 (E1) GR - BR S4 solenoid signal Ignition switch ON Below 1 V
    4th gear 11 to 14 V
    Except 4th gear Below 1 V
    E83-58 (SL2+) - E83-59 (SL2-) G - R SL2 solenoid signal Engine idle speed

    Pulse generation

    (See waveform 3)
    Ignition switch ON Below 1 V
    1st or 2nd gear 11 to 14 V
    3rd or O/D gear Below 1 V
    E83-57 (SL1+) - E83-77 (SL1-) L - LG SL1 solenoid signal Engine idle speed

    Pulse generation

    (See waveform 4)
    Ignition switch ON 11 to 14 V
    1st gear 11 to 14 V
    Except 1st gear Below 1 V
    E83-101 (NC+) - E83-102 (NC-) LG - P Speed sensor (NC) signal

    Vehicle speed 30 km/h (19mph): (3rd gear)

    Engine speed 1400 rpm

    Pulse generation

    (See waveform 5)
    E83-125 (NT+) - E83-124 (NT-) G - W Speed sensor (NT) signal Vehicle speed 20 km/h (12mph)

    Pulse generation

    (See waveform 6)
    E83-76 (SLT+) - E83-75 (SLT-) P - W SLT solenoid signal Engine idle speed

    Pulse generation

    (See waveform 1)
    E83-72 (THO1) - E83-95 (ETHO) Y - V ATF temperature sensor signal ATF temperature: 115°C (239°F) or more Below 1.5 V

    1. A01EW5WE05

      Waveform 1

      Reference:
      Terminal SLT+ - SLT-
      Tool setting 5 V/DIV., 1ms./DIV.
      Vehicle condition Engine idle speed
    2. A01EXDEE07

      Waveform 2

      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. A01EW5WE05

      Waveform 3

      Reference:
      Terminal SL2+ - SL2-
      Tool setting 5 V/DIV., 1ms./DIV.
      Vehicle condition Engine idle speed
    4. A01EW5WE05

      Waveform 4

      Reference:
      Terminal SL1+ - SL1-
      Tool setting 5 V/DIV., 1ms./DIV.
      Vehicle condition Engine idle speed
    5. A01EWVNE08

      Waveform 5

      Reference:
      Terminal NC+ - NC-
      Tool setting 1 V/DIV., 1ms./DIV.
      Vehicle condition

      Vehicle speed 30 km/h (19 mph): (3rd gear)

      Engine speed 1400 rpm
    6. A01EWZQE12

      Waveform 6

      Reference:
      Terminal NT+ - NT-
      Tool setting 5 V/DIV., 0.5ms./DIV.
      Vehicle condition Vehicle speed 20 km/h (12 mph)
    7. A01EUWEE08

      Waveform 7

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

      Tech Tips

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