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Terminals Of ECM

  1. ECM 
    Fig 1: Identifying ECM Connector
    G04105431Courtesy 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.

    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    D (E3-9) - E1 (E3-7) G-Y - BR D shift position switch signal IG switch ON and shift lever D and S position 10 to 14 V
    IG switch ON and shift lever except D and S position Below 1 V
    R (E3-8) - E1 (E3-7) G - BR R shift position switch signal IG switch ON and shift lever R position 10 to 14 V
    IG switch ON and shift lever except R position Below 1 V
    STP (E5-4) - E1 (E3-7) G-R - BR Stop lamp switch signal Brake pedal is depressed 7.5 to 14 V
    Brake pedal is released Below 1.5 V
    SFTD (E5-19) - E1 (E3-7) Y-B - BR Down shift switch signal IG switch ON and shift lever S position 10 to 14 V
    IG switch ON and shift lever "-" position (Down shift) Below 1 V
    SFTU (E5-30) - E1 (E3-7) L-Y - BR Up shift switch signal IG switch ON and shift lever S position 10 to 14 V
    IG switch ON and shift lever "+" position (Up shift) Below 1 V
    S (E5-9) - E1 (E3-7) G-B - BR S shift position switch signal IG switch ON and shift lever S position 10 to 14 V
    IG switch ON and shift lever except S position Below 1 V
    P (E3-6) - E1 (E3-7) W - BR Park position switch signal IG switch ON and shift lever P position 10 to 14 V
    IG switch ON and shift lever except P position Below 1 V
    N (E3-32) - E1 (E3-7) G-R - BR Neutral position switch signal IG switch ON and shift lever N position 10 to 14 V
    IG switch ON and shift lever except N position Below 1 V
    NSW (E3-4) - E1 (E3-7) L-Y - BR Park neutral switch signal IG switch ON and shift lever P and N position Below 1 V
    IG switch ON and shift lever except P and N position 10 to 14 V
    SLU+ (E3-13) - SLU- (E3-12) L-Y - B-W SLU solenoid signal 5th (lock-up) or 6th (lock-up) gear Pulse generation (see Fig 3)
    SR (E3-2) - E1 (E3-7) G - BR SR solenoid signal 1st, 2nd, 3rd or 4th gear 10 to 14 V
    5th or 6th gear Below 1 V
    S4 (E3-16) - E1 (E3-7) W - BR S4 solenoid signal 5th or 6th gear 10 to 14 V
    1st, 2nd, 3rd or 4th gear Below 1 V
    S3 (E3-17) - E1 (E3-7) R - BR S3 solenoid signal 1st, 2nd or 3rd gear 10 to 14 V
    4th, 5th or 6th gear Below 1 V
    S2 (E3-18) - E1 (E3-7) L-R - BR S2 solenoid signal 1st, 2nd or 6th gear 10 to 14 V
    3rd, 4th or 5th gear Below 1 V
    S1 (E3-19) - E1 (E3-7) G-R - BR S1 solenoid signal 1st gear Below 1 V
    Except 1st gear 10 to 14 V
    SL2+ (E3-11) - SL2- (E3-10) Y-G - Y SL2 solenoid signal Engine idle speed Pulse generation (see Fig 4)
    SL1+ (E3-25) - SL1- (E3-24) R-W - L SL1 solenoid signal 5th or 6th gear Pulse generation (see Fig 5)
    SP2+ (E3-23) - SP2- (E3-22) G - R Speed sensor (SP2) signal Vehicle speed 20 km/h (12 mph) Pulse generation (see Fig 7)
    NT+ (E3-21) - NT- (E3-20) Y - L Speed sensor (NT) signal Engine idle speed (P or N position) Pulse generation (see Fig 6)
    SLT+ (E3-35) - SLT- (E3-34) B - G-B SLT solenoid signal Engine idle speed Pulse generation (see Fig 2)
    OIL (E3-27) - EOIL (E3-26) G-Y - BR ATF temperature sensor signal ATF temperature: 115 °C (239 °F) or more Below 1.5 V

    Waveform 1

    Reference: 

    WAVEFORM REFERENCE CHART

    Terminal SLT+ - SLT-
    Tool setting 5V/DIV, 1ms/DIV
    Vehicle condition Engine idle speed
    Fig 2: Identifying Voltage Pulse Pattern
    G03978534Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Waveform 2

    Reference: 

    WAVEFORM REFERENCE CHART

    Terminal SLU+ - SLU-
    Tool setting 5V/DIV, 1ms/DIV
    Vehicle condition 5th (lock-up) or 6th (lock-up) gear
    Fig 3: Identifying Waveform 2
    G04105433Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Waveform 3

    Reference: 

    WAVEFORM REFERENCE CHART

    Terminal SL2+ - SL2-
    Tool setting 5V/DIV, 1ms/DIV
    Vehicle condition Engine idle speed
    Fig 4: Identifying Voltage Pulse Pattern
    G03978534Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Waveform 4

    Reference: 

    WAVEFORM REFERENCE CHART

    Terminal SL1+ - SL1-
    Tool setting 5V/DIV, 1ms/DIV
    Vehicle condition 5th or 6th gear
    Fig 5: Identifying Voltage Pulse Pattern
    G03978534Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Waveform 5

    Reference: 

    WAVEFORM REFERENCE CHART

    Terminal NT+ - NT-
    Tool setting 1V/DIV, 2ms/DIV
    Vehicle condition Engine idle speed (P or N position)
    Fig 6: Identifying Waveform 5
    G04105436Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Waveform 6

    Reference: 

    WAVEFORM REFERENCE CHART

    Terminal SP2+ - SP2-
    Tool setting 2V/DIV, 20ms/DIV
    Vehicle condition Vehicle speed 20 km/h (12 mph)
    Fig 7: Identifying Waveform 6
    G04105437Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Passenger Side Junction Block ECU 
    Fig 8: Identifying Passenger Side Junction Block ECU
    G04105438Courtesy 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 "Specified Condition".

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

    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    PWR (P4-18) - Body ground GR-L PWR switch signal Ignition switch ON and Pattern select switch (PWR) ON 0 to 1.5 V
    PWR (P4-18) - Body ground GR-L PWR switch signal Ignition switch ON and Pattern select switch (PWR) OFF Pulse generation*
    SNOW* (P4-17) - Body ground L-R SNOW switch signal Ignition switch ON and Pattern select switch (SNOW) ON 0 to 1.5 V
    SNOW* (P4-17) - Body ground L-R SNOW switch signal Ignition switch ON and Pattern select switch (SNOW) OFF Pulse generation*
    HINT:
    *: 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 to1.5 V).
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