Terminals Of Ecu

Fig 1: Identifying Master Switch Assembly Connector Terminals

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1. Disconnect the I11 switch connector.
2. Measure the voltage and resistance according to the value(s) in the table below.

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

Fig 2: Identifying Main Body ECU Connectors

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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 DESCRIPTION SPECIFIED CONDITION CHART
   
   

   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	Engine switch on (ACC)	11 to 14 V
   2A-1 (ALTB) - Body ground	B - Body ground	Power supply	Engine switch off	11 to 14 V
   2D-62 (GND) - 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 DESCRIPTION SPECIFIED CONDITION CHART
   
   

   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  ewaveform 1 or  f2)
   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  gwaveform 3 or  h4)
   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  iwaveform 5 or  j6)
   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  kwaveform 7 or  l8)
   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  mwaveform 9 or  n10)
   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  owaveform 11 or  p12)
   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  qwaveform 13 or  r14)
   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  swaveform 15 or  t16)
   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  uwaveform 17 or  v18)
   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  wwaveform 19 or  x20)
   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  ywaveform 21 or  z22)
   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  aawaveform 23 or  ab24)

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

5. Using an oscilloscope, check waveform 1.

   Waveform 1 (Reference) 

   WAVEFORM 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

   Fig 3: Identifying Waveform 1

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6. Using an oscilloscope, check waveform 2.

   Waveform 2 (Reference) 

   WAVEFORM 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

   Fig 4: Identifying Waveform 2

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7. Using an oscilloscope, check waveform 3.

   Waveform 3 (Reference) 

   WAVEFORM 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

   Fig 5: Identifying Waveform 3

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
8. Using an oscilloscope, check waveform 4.

   Waveform 4 (Reference) 

   WAVEFORM 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

   Fig 6: Identifying Waveform 4

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
9. Using an oscilloscope, check waveform 5.

   Waveform 5 (Reference) 

   WAVEFORM 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

   Fig 7: Identifying Waveform 5

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
10. Using an oscilloscope, check waveform 6.

    Waveform 6 (Reference) 

    WAVEFORM 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

    Fig 8: Identifying Waveform 6

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11. Using an oscilloscope, check waveform 7.

    Waveform 7 (Reference) 

    WAVEFORM 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

    Fig 9: Identifying Waveform 7

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12. Using an oscilloscope, check waveform 8.

    Waveform 8 (Reference) 

    WAVEFORM 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

    Fig 10: Identifying Waveform 8

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13. Using an oscilloscope, check waveform 9.

    Waveform 9 (Reference) 

    WAVEFORM 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

    Fig 11: Identifying Waveform 9

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14. Using an oscilloscope, check waveform 10.

    Waveform 10 (Reference) 

    WAVEFORM 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

    Fig 12: Identifying Waveform 10

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15. Using an oscilloscope, check waveform 11.

    Waveform 11 (Reference) 

    WAVEFORM 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

    Fig 13: Identifying Waveform 11

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16. Using an oscilloscope, check waveform 12.

    Waveform 12 (Reference) 

    WAVEFORM 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

    Fig 14: Identifying Waveform 12

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17. Using an oscilloscope, check waveform 13.

    Waveform 13 (Reference) 

    WAVEFORM 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

    Fig 15: Identifying Waveform 13

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18. Using an oscilloscope, check waveform 14.

    Waveform 14 (Reference) 

    WAVEFORM 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

    Fig 16: Identifying Waveform 14

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19. Using an oscilloscope, check waveform 15.

    Waveform 15 (Reference) 

    WAVEFORM 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

    Fig 17: Identifying Waveform 15

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20. Using an oscilloscope, check waveform 16.

    Waveform 16 (Reference) 

    WAVEFORM 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

    Fig 18: Identifying Waveform 16

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21. Using an oscilloscope, check waveform 17.

    Waveform 17 (Reference) 

    WAVEFORM 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

    Fig 19: Identifying Waveform 17

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22. Using an oscilloscope, check waveform 18.

    Waveform 18 (Reference) 

    WAVEFORM 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

    Fig 20: Identifying Waveform 18

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23. Using an oscilloscope, check waveform 19.

    Waveform 19 (Reference) 

    WAVEFORM 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

    Fig 21: Identifying Waveform 19

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24. Using an oscilloscope, check waveform 20.

    Waveform 20 (Reference) 

    WAVEFORM 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

    Fig 22: Identifying Waveform 20

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25. Using an oscilloscope, check waveform 21.

    Waveform 21 (Reference) 

    WAVEFORM 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

    Fig 23: Identifying Waveform 21

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26. Using an oscilloscope, check waveform 22

    Waveform 22 (Reference) 

    WAVEFORM 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

    Fig 24: Identifying Waveform 22

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27. (aa) Using an oscilloscope, check waveform 23.

    Waveform 23 (Reference) 

    WAVEFORM 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

    Fig 25: Identifying Waveform 23

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28. (ab) Using an oscilloscope, check waveform 24.

    Waveform 24 (Reference) 

    WAVEFORM 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

Fig 26: Identifying Waveform 24

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