Terminals Of Ecu

Fig 1: Identifying Master Switch Assembly Connector Terminal

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1. Disconnect the 111 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 Connector Terminal

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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.
   VOLTAGE AND RESISTANCE SPECIFICATION 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
   2D-8 (ACC) - Body ground	GR - Body ground	ACC power supply	Engine switch on (ACC)	11 to 14 V
   2D-8 (ACC) - Body ground	GR - Body ground	ACC power supply	Engine switch off	Below 1 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 in the wire harness.

3. Reconnect the 2B, 2D, and E3 ECU connectors.
4. Measure the voltage of the connectors.
   CONNECTOR TERMINAL REFERENCE CHART
   
   

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   E1-24 (DCTY) - Body ground	L - Body ground	Driver side door courtesy switch input	Driver side door open	Below 1 V
   			Engine switch off, and driver side door courtesy switch off	Pulse generation (see  ewaveform 1 or  f2)
   E2-21 (PCTY) - Body ground	Y - Body ground	Front passenger side door courtesy switch input	Front passenger side door open	Below 1 V
   			Engine switch off, and passenger side door courtesy 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 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 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 cylinder off	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 cylinder off	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 cylinder off	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 cylinder off	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 LH lock motor lock drive output	Master switch (door control switch) or driver side door key cylinder off	Below 1 V
   			Master switch (door control switch) or driver side door key cylinder lock	11 to 14 V
   2C-23 (ACT-) - Body ground	BR - Body ground	Rear door LH lock motor unlock drive output	Master switch (door control switch) or driver side door key cylinder off	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 cylinder off	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 cylinder off	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 cylinder 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 cylinder 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 unlock	Below 1 V
   			Engine switch off, all doors closed and driver side door lock	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 unlock	Below 1 V
   			Engine switch off, all doors closed and passenger side door lock	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 unlock	Below 1 V
   			Engine switch off, all doors closed and rear door LH lock	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 unlock	Below 1 V
   			Engine switch off, all doors closed and rear door RH lock	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 CHART
   
   

   Item	Content
   Terminal No. (Symbol)	E1-24 (DCTY) - Body ground
   Tool Setting	5V/DIV., 20 ms/DIV.
   Condition	Engine switch off, and driver side door courtesy switch off

   Fig 3: Identifying Waveform 1

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6. Using an oscilloscope, check waveform 2.

   Waveform 2 (Reference) 

   WAVEFORM REFERENCE CHART
   
   

   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 switch off

   Fig 4: Identifying Waveform 2

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7. Using an oscilloscope, check waveform 3.

   Waveform 3 (Reference) 

   WAVEFORM REFERENCE CHART
   
   

   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 switch off

   Fig 5: Identifying Waveform 3

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8. Using an oscilloscope, check waveform 4.

   Waveform 4 (Reference) 

   WAVEFORM REFERENCE CHART
   
   

   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 switch off

   Fig 6: Identifying Waveform 4

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9. Using an oscilloscope, check waveform 5.

   Waveform 5 (Reference) 

   WAVEFORM REFERENCE CHART
   
   

   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 switch off

   Fig 7: Identifying Waveform 5

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10. Using an oscilloscope, check waveform 6.

    Waveform 6 (Reference) 

    WAVEFORM REFERENCE CHART
    
    

    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 switch off

    Fig 8: Identifying Waveform 6

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11. Using an oscilloscope, check waveform 7.

    Waveform 7 (Reference) 

    WAVEFORM REFERENCE CHART
    
    

    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 switch off

    Fig 9: Identifying Waveform 7

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12. Using an oscilloscope, check waveform 8.

    Waveform 8 (Reference) 

    WAVEFORM REFERENCE CHART
    
    

    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 switch off

    Fig 10: Identifying Waveform 8

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13. Using an oscilloscope, check waveform 9.

    Waveform 9 (Reference) 

    WAVEFORM REFERENCE CHART
    
    

    Item	Content
    Terminal No. (Symbol)	E2-25 (BCTY) - Body ground
    Tool Setting	5V/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 CHART
    
    

    Item	Content
    Terminal No. (Symbol)	E2-25 (BCTY) - Body ground
    Tool Setting	5V/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 CHART
    
    

    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 cylinder neutral position

    Fig 13: Identifying Waveform 11

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16. Using an oscilloscope, check waveform 12.

    Waveform 12 (Reference) 

    WAVEFORM REFERENCE CHART
    
    

    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 cylinder neutral position

    Fig 14: Identifying Waveform 12

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17. Using an oscilloscope, check waveform 13.

    Waveform 13 (Reference) 

    WAVEFORM REFERENCE CHART
    
    

    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 cylinder neutral position

    Fig 15: Identifying Waveform 13

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18. Using an oscilloscope, check waveform 14.

    Waveform 14 (Reference) 

    WAVEFORM REFERENCE CHART
    
    

    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 cylinder neutral position

    Fig 16: Identifying Waveform 14

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19. Using an oscilloscope, check waveform 15.

    Waveform 15 (Reference) 

    WAVEFORM REFERENCE CHART
    
    

    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 lock

    Fig 17: Identifying Waveform 15

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20. Using an oscilloscope, check waveform 16.

    Waveform 16 (Reference) 

    WAVEFORM REFERENCE CHART
    
    

    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 lock

    Fig 18: Identifying Waveform 16

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21. Using an oscilloscope, check waveform 17.

    Waveform 17 (Reference) 

    WAVEFORM REFERENCE CHART
    
    

    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 lock

    Fig 19: Identifying Waveform 17

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22. Using an oscilloscope, check waveform 18.

    Waveform 18 (Reference) 

    WAVEFORM REFERENCE CHART
    
    

    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 lock

    Fig 20: Identifying Waveform 18

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23. Using an oscilloscope, check waveform 19.

    Waveform 19 (Reference) 

    WAVEFORM REFERENCE CHART
    
    

    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 lock

    Fig 21: Identifying Waveform 19

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24. Using an oscilloscope, check waveform 20.

    Waveform 20 (Reference) 

    WAVEFORM REFERENCE CHART
    
    

    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 lock

    Fig 22: Identifying Waveform 20

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25. Using an oscilloscope, check waveform 21.

    Waveform 21 (Reference) 

    WAVEFORM REFERENCE CHART
    
    

    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 lock

    Fig 23: Identifying Waveform 21

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26. Using an oscilloscope, check waveform 22.

    Waveform 22 (Reference) 

    WAVEFORM REFERENCE CHART
    
    

    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 lock

    Fig 24: Identifying Waveform 22

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27. Using an oscilloscope, check waveform 23.

    Waveform 23 (Reference) 

    WAVEFORM REFERENCE CHART
    
    

    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. Using an oscilloscope, check waveform 24.

    Waveform 24 (Reference) 

Fig 26: Identifying Waveform 24

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