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Terminals Of Ecu

  1. TCM 
    Fig 1: TCM Connector Terminal Identification
    G05847430Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    Each TCM 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 be inspected. The standard voltage between the terminals is shown under "Specified Condition".

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

    VOLTAGE SPECIFICATION

    Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
    E5-26 (P) - E5-7 (E1) W - BR Park position switch signal Engine switch on (IG) and shift lever on P 11 to 14 V
    E5-26 (P) - E5-7 (E1) W - BR Park position switch signal Engine switch on (IG) and shift lever not on P Below 1 V
    E5-34 (R) - E5-7 (E1) G - BR R shift position switch signal Engine switch on (IG) and shift lever on R 11 to 14 V
    E5-34 (R) - E5-7 (E1) G - BR R shift position switch signal Engine switch on (IG) and shift lever not on R Below 1 V
    E5-33 (N) - E5-7 (E1) G-R - BR N shift position switch signal Engine switch on (IG) and shift lever on N 11 to 14 V
    E5-33 (N) - E5-7 (E1) G-R - BR N shift position switch signal Engine switch on (IG) and shift lever not on N Below 1 V
    E5-25 (D) - E5-7 (E1) G-Y - BR D shift position switch signal Engine switch on (IG) and shift lever on D or S 11 to 14 V
    E5-25 (D) - E5-7 (E1) G-Y - BR D shift position switch signal Engine switch on (IG) and shift lever not on D or S Below 1 V
    A12-2 (STP) - E5-7 (E1) L - BR Stop light switch signal Brake pedal is depressed 7.5 to 14 V
    A12-2 (STP) - E5-7 (E1) L - BR Stop light switch signal Brake pedal is released Below 1 V
    E6-27 (THO1) - E6-35 (E2) G-Y - BR ATF temperature sensor signal ATF temperature 115°C (239°F) or more Below 1.5 V
    E6-6 (SL1+) - E6-5 (SL1-) Y - L Shift solenoid valve SL1 signal 1st, 2nd, 3rd, 4th or 5th gear Pulse generation (see  a)
    E6-4 (SL2+) - E6-3 (SL2-) BR - Y Shift solenoid valve SL2 signal 5th, 6th, 7th or 8th gear Pulse generation (see  b)
    E6-2 (SL3+) - E6-1 (SL3-) L - B Shift solenoid valve SL3 signal 3rd or 7th gear Pulse generation (see  c)
    E7-7 (SL4+) - E7-6 (SL4-) B - W Shift solenoid valve SL4 signal 4th or 6th gear Pulse generation (see  d)
    E7-5 (SL5+) - E7-4 (SL5-) L - BR Shift solenoid valve SL5 signal 2nd or 8th gear Pulse generation (see  e)
    E7-3 (SLT+) - E7-2 (SLT-) B - G Shift solenoid valve SLT signal Engine idling Pulse generation (see  f)
    E7-1 (SLU+) - E7-8 (SLU-) W - L-R Shift solenoid valve SLU signal 4th, 5th, 6th, 7th or 8th gear (Flex lock-up ON) Pulse generation (see  g)
    E6-7 (SL) - E5-7 (E1) L-R - BR Shift solenoid valve SL signal All gears 11 to 14 V
    E7-17 (SR) - E5-7 (E1) G - BR Shift solenoid valve SR signal All gears 11 to 14 V
    E7-31 (NTB) - E7-25 (NTO) G-W - BR Speed sensor NT signal Engine idling (shift lever on P or N) Pulse generation (see  h)
    E7-28 (NC3B) - E7-22 (NT3O) G - R Speed sensor NC3 signal Engine idling (shift lever on P or N) Pulse generation (see  i)
    E7-26 (SP2B) - E7-18 (SP2O) Y - L Speed sensor SP2 signal Vehicle speed 20 km/h (12 mph) Pulse generation (see  j)
    E6-25 (TPS1) - E5-7 (E1) L - BR Oil pressure switch signal 6th to 8th gear 11 to 14 V
    E6-25 (TPS1) - E5-7 (E1) L - BR Oil pressure switch signal 1st to 5th gear Below 1 V
    A12-3 (STA) - E5-7 (E1) Y - BR Starter signal Cranking (shift lever on P or N, engine switch start) 11 to 14 V
    A12-3 (STA) - E5-7 (E1) Y - BR Starter signal Engine switch on (IG) and shift lever not on P or N Below 2 V
    A12-4 (IG2) - E5-7 (E1) R - BR Engine switch Engine switch on (IG) 11 to 14 V
    A12-7 (BATT) - E5-7 (E1) LG - BR Battery (for measuring battery voltage and for TCM memory) Always 11 to 14 V
    A12-6 (+B) - E5-7 (E1) B-W - BR Power source of TCM Engine switch on (IG) 11 to 14 V
    A12-18 (CAN+) - E5-7 (E1) B - BR CAN communication line Engine switch on (IG) Pulse generation (see  k)
    A12-28 (CAN-) -E5-7 (E1) W - BR CAN communication line Engine switch on (IG) Pulse generation (see  l)
    1. Using an oscilloscope, check waveform 1.

      Reference (waveform 1): 

      ITEM REFERENCE

      Item Content
      Terminal No. (Symbols) E6-6 (SL1+) - E6-5 (SL1-)
      Tool setting 5 V/DIV., 1 msec./DIV.
      Condition 1st, 2nd, 3rd, 4th or 5th gear
      Fig 2: Identifying Waveform 1
      G04948278Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using an oscilloscope, check waveform 2.

      Reference (waveform 2): 

      ITEM REFERENCE

      Item Content
      Terminal No. (Symbols) E6-4 (SL2+) - E6-3 (SL2-)
      Tool setting 5 V/DIV., 1 msec./DIV.
      Condition 5th, 6th, 7th or 8th gear
      Fig 3: Identifying Waveform 2
      G04948278Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Using an oscilloscope, check waveform 3.

      Reference (waveform 3): 

      ITEM REFERENCE

      Item Content
      Terminal No. (Symbols) E6-2 (SL3+) - E6-1 (SL3-)
      Tool setting 5 V/DIV., 1 msec./DIV.
      Condition 3rd or 7th gear
      Fig 4: Identifying Waveform 3
      G05847433Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Using an oscilloscope, check waveform 4.

      Reference (waveform 4): 

      ITEM REFERENCE

      Item Content
      Terminal No. (Symbols) E7-7 (SL4+) - E7-6 (SL4-)
      Tool setting 5 V/DIV., 1 msec./DIV.
      Condition 6th gear
      Fig 5: Identifying Waveform 4
      G04948278Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Using an oscilloscope, check waveform 5.

      Reference (waveform 5): 

      ITEM REFERENCE

      Item Content
      Terminal No. (Symbols) E7-5 (SL5+) - E7-4 (SL5-)
      Tool setting 5 V/DIV., 1 msec./DIV.
      Condition 2nd or 8th gear
      Fig 6: Identifying Waveform 5
      G04948278Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Using an oscilloscope, check waveform 6.

      Reference (waveform 6): 

      ITEM REFERENCE

      Item Content
      Terminal No. (Symbols) E7-3 (SLT+) - E7-2 (SLT-)
      Tool setting 5 V/DIV., 1 msec./DIV.
      Condition Engine idling
      Fig 7: Identifying Waveform 6
      G04948278Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Using an oscilloscope, check waveform 7.

      Reference (waveform 7): 

      ITEM REFERENCE

      Item Content
      Terminal No. (Symbols) E7-1 (SLU+) - E7-8 (SLU-)
      Tool setting 5 V/DIV., 1 msec./DIV.
      Condition 4th, 5th, 6th, 7th or 8th gear (Flex lock-up ON)
      Fig 8: Identifying Waveform 7
      G04948284Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Using an oscilloscope, check waveform 8.

      Reference (waveform 8): 

      ITEM REFERENCE

      Item Content
      Terminal No. (Symbols) E7-31 (NTB) - E7-25 (NTO)
      Tool setting 5 V/DIV., 2 msec./DIV.
      Condition Engine idling (shift lever on P or N)
      Fig 9: Identifying Waveform 8
      G04948285Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    9. Using an oscilloscope, check waveform 9.

      Reference (waveform 9): 

      ITEM REFERENCE

      Item Content
      Terminal No. (Symbols) E7-28 (NC3B) - E7-22 (NC3O)
      Tool setting 5 V/DIV., 2 msec./DIV.
      Condition Engine idling (shift lever on P or N)
      Fig 10: Identifying Waveform 9
      G04948285Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    10. Using an oscilloscope, check waveform 10.

      Reference (waveform 10): 

      ITEM REFERENCE

      Item Content
      Terminal No. (Symbols) E7-26 (SP2B) - E7-18 (SP2O)
      Tool setting 5 V/DIV., 2 msec./DIV.
      Condition Engine idling (shift lever on P or N)
      Fig 11: Identifying Waveform 10
      G04948285Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    11. Using an oscilloscope, check waveform 11.

      Reference (waveform 11): 

      ITEM REFERENCE

      Item Content
      Terminal No. (Symbols) A12-18 (CAN+) - E5-7 (E1)
      Tool setting 1 V/DIV., 10 msec./DIV.
      Condition Engine is stopped, engine switch on (IG)
      Fig 12: Identifying Waveform 11
      G05847441Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    12. Using an oscilloscope, check waveform 12.

      Reference (waveform 12): 

      ITEM REFERENCE

      Item Content
      Terminal No. (Symbols) A12-28 (CAN-) - E5-7 (E1)
      Tool setting 1 V/DIV., 10 msec./DIV.
      Condition Engine is stopped, engine switch on (IG)
      Fig 13: Identifying Waveform 12
      G05847442Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. ECM 
    Fig 14: Identifying ECM Connector Terminals
    G05847443Courtesy 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 be inspected. The standard voltage between the terminals is shown under "Specified Condition".

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

    ECM TERMINAL - VOLTAGE SPECIFICATIONS

    Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
    A13-16 (S) - E3-1 (E1) G - W-B S shift position switch signal Engine switch on (IG) and shift lever on S 11 to 14 V
    A13-16 (S) - E3-1 (E1) G - W-B S shift position switch signal Engine switch on (IG) and shift lever not on S Below 1 V
    A13-8 (SFTU) - E3-1 (E1) Y - W-B Up-shift shift position switch signal Engine switch on (IG) and shift lever on S 11 to 14 V
    A13-8 (SFTU) - E3-1 (E1) Y - W-B Up-shift shift position switch signal Engine switch on (IG) and shift lever in "+" position (up-shift) Below 1 V
    A13-7 (SFTD) - E3-1 (E1) L - W-B Down-shift position switch signal Engine switch on (IG) and shift lever on S 11 to 14 V
    A13-7 (SFTD) - E3-1 (El) L - W-B Down-shift position switch signal Engine switch on (IG) and shift lever in "-" position (down-shift) Below 1 V
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