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Terminals Of Ecu

  1. CHECK MASTER SWITCH ASSEMBLY 
    Fig 1: Master Switch Assembly Connector Terminal Identification
    GTY117007Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the I11 switch connector.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I11-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      I11-11 (B) - I11-12 (GND) L - W-B Battery power supply Always 11 to 14 V

      If the result is not as specified, there may be a malfunction on the wire harness side.

  2. CHECK MAIN BODY ECU 
    Fig 2: Main Body ECU Connector Terminal Identification
    GTY109496Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the 2B, 2D, and E3 ECU connectors.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      2B-20 (BATB) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      2A-1 (ALTB) - Body ground B - Body ground Power supply Always 11 to 14 V
      2D-62 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      E3-1 (GND3) - Body ground BR - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the 2B, 2D and E3 ECU connectors.
    4. Measure the voltage according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      E1-24 (DCTY) - Body ground L - Body ground Driver side door courtesy light switch input Driver side door open Below 1 V
      Engine switch off and driver side door courtesy light switch off Pulse generation (see waveform 1 in step  e or waveform 2 in step  f)
      E2-21 (PCTY) - Body ground Y - Body ground Front passenger side door courtesy light switch input Front passenger side door open Below 1 V
      Engine switch off and passenger side door courtesy light switch off Pulse generation (see waveform 3 in step  g or waveform 4 in step  h)
      2C-2 (LCTY) - Body ground W - Body ground Rear door LH courtesy light switch input Rear door LH open Below 1 V
      Engine switch off and rear LH side door courtesy light switch off Pulse generation (see waveform 5 in step  i or waveform 6 in step  j)
      E2-7 (RCTY) - Body ground G - Body ground Rear door RH courtesy light switch input Rear door RH open Below 1 V
      Engine switch off and rear RH side door courtesy light switch off Pulse generation (see waveform 7 in step  k or waveform 8 in step l)
      E2-25 (BCTY) - Body ground W - Body ground Back door courtesy light switch input Back door open Below 1 V
      Engine switch off and back door closed Pulse generation (see waveform 9 in step  m or waveform 10 in step  n)
      2D-3 (ACT+) - Body ground L - Body ground Driver side door lock motor lock drive output Master switch (door control switch) or driver side door key neutral position Below 1 V
      Master switch (door control switch) or driver side door key cylinder lock 11 to 14 V
      E1-5 (ACTD) - Body ground B - Body ground Driver side door lock motor unlock drive output Master switch (door control switch) or driver side door key neutral position Below 1 V
      Master switch (door control switch) or driver side door key cylinder unlock 11 to 14 V
      2D-3 (ACT+) - Body ground L - Body ground Front passenger side door lock motor lock drive output Master switch (door control switch) or driver side door key neutral position Below 1 V
      Master switch (door control switch) or driver side door key cylinder lock 11 to 14 V
      2D-2 (ACT-) - Body ground B - Body ground Front passenger side door lock motor unlock drive output Master switch (door control switch) or driver side door key neutral position Below 1 V
      Master switch (door control switch) or driver side door key cylinder unlock 11 to 14 V
      2C-24 (ACT+) - Body ground L - Body ground Rear door LH lock motor lock drive output Master switch (door control switch) or driver side door key neutral position Below 1 V
      Master switch (door control switch) or driver side door key cylinder lock 11 to 14 V
      2C-23 (ACT-) - Body ground B - Body ground Rear door LH lock motor unlock drive output Master switch (door control switch) or driver side door key neutral position Below 1 V
      Master switch (door control switch) or driver side door key cylinder unlock 11 to 14 V
      2D-3 (ACT+) - Body ground L - Body ground Rear door RH lock motor lock drive output Master switch (door control switch) or driver side door key neutral position Below 1 V
      Master switch (door control switch) or driver side door key cylinder lock 11 to 14 V
      2D-2 (ACT-) - Body ground B - Body ground Rear door RH lock motor unlock drive output Master switch (door control switch) or driver side door key neutral position Below 1 V
      Master switch (door control switch) or driver side door key cylinder unlock 11 to 14 V
      E1-10 (UL3) - Body ground Y - Body ground Driver side door lock key switch input Driver side door key cylinder unlock Below 1 V
      Engine switch off, all doors closed and driver side door key neutral position Pulse generation (see waveform 11 in step  o or waveform 12 in step  p)
      2D-53 (L2) - Body ground LG - Body ground Driver side door lock key switch input Driver side door key cylinder lock Below 1 V
      Engine switch off, all doors closed and driver side door key neutral position Pulse generation (see waveform 13 in step  q or waveform 14 in step  r)
      E1-9 (LSWD) - Body ground BR - Body ground Driver side door lock position switch input Driver side door unlocked Below 1 V
      Engine switch off, all doors closed and driver side door locked Pulse generation (see waveform 15 in step  s or waveform 16 in step  t)
      E2-27 (LSWP) - Body ground Y - Body ground Passenger side door lock position switch input Passenger side door unlocked Below 1 V
      Engine switch off, all doors closed and passenger side door locked Pulse generation (see waveform 17 in step  u or waveform 18 in step  v)
      2C-1 (LSWL) - Body ground BR - Body ground Rear door LH lock position switch input Rear door LH unlocked Below 1 V
      Engine switch off, all doors closed and rear door LH locked Pulse generation (see waveform 19 in step  w or waveform 20 in step  x)
      E2-5 (LSWR) - Body ground BR - Body ground Rear door RH lock position switch input Rear door RH unlocked Below 1 V
      Engine switch off, all doors closed and rear door RH locked Pulse generation (see waveform 21 in step  y or waveform 22 in step  z)
      E1-26 (BDSU) - Body ground L - Body ground Back door opener switch input Back door lock opener switch off Below 1 V
      Engine switch off, all doors closed and back door lock opener switch on Pulse generation (see waveform 23 in step  aa or waveform 24 in step  ab)

      If the result is not as specified, the ECU may have a malfunction.

    5. Using an oscilloscope, check waveform 1.
      Fig 3: Identifying Waveform
      GTY119162Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 1 (REFERENCE)

      Item Content
      Terminal No. (Symbol) E1-24 (DCTY) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off and driver side door courtesy light switch off
    6. Using an oscilloscope, check waveform 2.
      Fig 4: Identifying Waveform
      GTY118723Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 2 (REFERENCE)

      Item Content
      Terminal No. (Symbol) E1-24 (DCTY) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off and driver side door courtesy light switch off
    7. Using an oscilloscope, check waveform 3.
      Fig 5: Identifying Waveform
      GTY141490Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 3 (REFERENCE)

      Item Content
      Terminal No. (Symbol) E2-21 (PCTY) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off and passenger side door courtesy light switch off
    8. Using an oscilloscope, check waveform 4.
      Fig 6: Identifying Waveform
      GTY132683Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 4 (REFERENCE)

      Item Content
      Terminal No. (Symbol) E2-21 (PCTY) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off and passenger side door courtesy light switch off
    9. Using an oscilloscope, check waveform 5.
      Fig 7: Identifying Waveform
      GTY119162Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 5 (REFERENCE)

      Item Content
      Terminal No. (Symbol) 2C-2 (LCTY) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off and rear LH side door courtesy light switch off
    10. Using an oscilloscope, check waveform 6.
      Fig 8: Identifying Waveform
      GTY118723Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 6 (REFERENCE)

      Item Content
      Terminal No. (Symbol) 2C-2 (LCTY) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off and rear LH side door courtesy light switch off
    11. Using an oscilloscope, check waveform 7.
      Fig 9: Identifying Waveform
      GTY119162Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 7 (REFERENCE)

      Item Content
      Terminal No. (Symbol) E2-7 (RCTY) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off and rear RH side door courtesy light switch off
    12. Using an oscilloscope, check waveform 8.
      Fig 10: Identifying Waveform
      GTY118723Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 8 (REFERENCE)

      Item Content
      Terminal No. (Symbol) E2-7 (RCTY) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off and rear RH side door courtesy light switch off
    13. Using an oscilloscope, check waveform 9.
      Fig 11: Identifying Waveform
      GTY119162Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 9 (REFERENCE)

      Item Content
      Terminal No. (Symbol) E2-25 (BCTY) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off and back door closed
    14. Using an oscilloscope, check waveform 10.
      Fig 12: Identifying Waveform
      GTY118723Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 10 (REFERENCE)

      Item Content
      Terminal No. (Symbol) E2-25 (BCTY) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off and back door closed
    15. Using an oscilloscope, check waveform 11.
      Fig 13: Identifying Waveform
      GTY141490Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 11 (REFERENCE)

      Item Content
      Terminal No. (Symbol) E1-10 (UL3) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and driver side door key neutral position
    16. Using an oscilloscope, check waveform 12.
      Fig 14: Identifying Waveform
      GTY132683Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 12 (REFERENCE)

      Item Content
      Terminal No. (Symbol) E1-10 (UL3) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and driver side door key neutral position
    17. Using an oscilloscope, check waveform 13.
      Fig 15: Identifying Waveform
      GTY119162Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 13 (REFERENCE)

      Item Content
      Terminal No. (Symbol) 2D-53 (L2) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and driver side door key neutral position
    18. Using an oscilloscope, check waveform 14.
      Fig 16: Identifying Waveform
      GTY118723Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 14 (REFERENCE)

      Item Content
      Terminal No. (Symbol) 2D-53 (L2) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and driver side door key neutral position
    19. Using an oscilloscope, check waveform 15.
      Fig 17: Identifying Waveform
      GTY119162Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 15 (REFERENCE)

      Item Content
      Terminal No. (Symbol) E1-9 (LSWD) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and driver side door locked
    20. Using an oscilloscope, check waveform 16.
      Fig 18: Identifying Waveform
      GTY118723Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 16 (REFERENCE)

      Item Content
      Terminal No. (Symbol) E1-9 (LSWD) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and driver side door locked
    21. Using an oscilloscope, check waveform 17.
      Fig 19: Identifying Waveform
      GTY119162Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 17 (REFERENCE)

      Item Content
      Terminal No. (Symbol) E2-27 (LSWP) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and passenger side door locked
    22. Using an oscilloscope, check waveform 18.
      Fig 20: Identifying Waveform
      GTY118723Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 18 (REFERENCE)

      Item Content
      Terminal No. (Symbol) E2-27 (LSWP) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and passenger side door locked
    23. Using an oscilloscope, check waveform 19.
      Fig 21: Identifying Waveform
      GTY141490Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 19 (REFERENCE)

      Item Content
      Terminal No. (Symbol) 2C-1 (LSWL) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and rear door LH locked
    24. Using an oscilloscope, check waveform 20.
      Fig 22: Identifying Waveform
      GTY132683Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 20 (REFERENCE)

      Item Content
      Terminal No. (Symbol) 2C-1 (LSWL) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and rear door LH locked
    25. Using an oscilloscope, check waveform 21.
      Fig 23: Identifying Waveform
      GTY119162Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 21 (REFERENCE)

      Item Content
      Terminal No. (Symbol) E2-5 (LSWR) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and rear door RH locked
    26. Using an oscilloscope, check waveform 22.
      Fig 24: Identifying Waveform
      GTY118723Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 22 (REFERENCE)

      Item Content
      Terminal No. (Symbol) E2-5 (LSWR) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and rear door RH locked
    27. Using an oscilloscope, check waveform 23.
      Fig 25: Identifying Waveform
      GTY141490Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 23 (REFERENCE)

      Item Content
      Terminal No. (Symbol) E1-26 (BDSU) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and back door lock opener switch on
    28. Using an oscilloscope, check waveform 24.
      Fig 26: Identifying Waveform
      GTY132683Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 24 (REFERENCE)

      Item Content
      Terminal No. (Symbol) E1-26 (BDSU) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Engine switch off, all doors closed and back door lock opener switch on
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