WIRELESS DOOR LOCK CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK COWL SIDE JUNCTION BLOCK LH AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    B002EKLC48
    *1 Main Body ECU (multiplex Network Body ECU) - -

    1. Remove the main body ECU (multiplex network body ECU) from the cowl side junction block LH.

      Click here

    2. Connect the cowl side junction block LH connectors.

    3. Measure the voltage and resistance according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      MB-11 (GND1) - Body ground - Ground Always Below 1 Ω
      MB-29 (ACC) - Body ground - ACC power supply Engine switch on (ACC) 11 to 14 V
      Engine switch off Below 1 V
      MB-30 (BECU) - Body ground - Battery power supply Always 11 to 14 V
      MB-31 (ALTB) - Body ground - Battery power supply Always 11 to 14 V
      MB-32 (IG) - Body ground - IG power supply Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V

    4. Install the main body ECU (multiplex network body ECU) to the cowl side junction block LH.

      Click here

    5. Measure the voltage according to the value(s) in the table below.

      for LHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      5A-11 (ACT-) - Body ground LG - Body ground Door lock motor unlock drive output signal (front passenger side door and rear door RH) Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off Below 1 V
      Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder unlocked 11 to 14 V
      5A-13 (ACT+) - Body ground G - Body ground Door lock motor lock drive output signal (front passenger side door and rear door RH) Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off Below 1 V
      Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder locked 11 to 14 V
      5A-33 (FRCY) - Body ground R - Body ground Front door courtesy light switch assembly RH input signal Front door RH open Below 1 V
      Front door RH closed Pulse generation
      5C-8 (ACT+) - Body ground W - Body ground Door lock motor lock drive output signal (rear door LH) Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off Below 1 V
      Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder locked 11 to 14 V
      5C-9 (ACT+) - Body ground G - Body ground Door lock motor lock drive output signal (driver door) Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off Below 1 V
      Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder locked 11 to 14 V
      5C-10 (ACTD) - Body ground L - Body ground Door lock motor unlock drive output signal (driver door) Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off Below 1 V
      Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder unlocked 11 to 14 V
      5C-12 (ACT-) - Body ground LG - Body ground Door lock motor unlock drive output signal (rear door LH) Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off Below 1 V
      Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder unlocked 11 to 14 V
      5C-30 (LSWL) - Body ground B - Body ground Rear door LH unlock detection switch input signal Rear door LH unlocked Below 1 V
      Engine switch off, all doors closed and rear door LH locked Pulse generation
      5C-44 (FLCY) - Body ground R - Body ground Front door courtesy light switch assembly LH input signal Front door LH open Below 1 V
      Front door LH closed 11 to 14 V
      5D-27 (BZR) - Body ground G - Body ground Wireless door lock buzzer output signal Engine switch off, all doors closed and electrical key transmitter sub-assembly off → on (answer-back) Below 1V → Pulse generation
      K10-3 (LCTY) - Body ground G - Body ground Rear door courtesy light switch assembly LH input signal Rear door LH open Below 1 V
      Rear door LH closed Pulse generation
      K11-6 (RCTY) - Body ground G - Body ground Rear door courtesy light switch assembly RH input signal Rear door RH open Below 1 V
      Rear door RH closed Pulse generation
      K11-7 (LSFL) - Body ground SB - Body ground Front door LH unlock detection switch input signal Front door LH unlocked Below 1 V
      Engine switch off, all doors closed and front door LH locked Pulse generation
      K11-18 (LSFR) - Body ground SB - Body ground Front door RH unlock detection switch input signal Front door RH unlocked Below 1 V
      Engine switch off, all doors closed and front door RH locked Pulse generation
      K12-2 (LSWR) - Body ground B - Body ground Rear door RH unlock detection switch input signal Rear door RH unlocked Below 1 V
      Engine switch off, all doors closed and rear door RH locked 11 to 14 V
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      5A-1 (ACTD) - Body ground L - Body ground Door lock motor unlock drive output signal (driver side) Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off Below 1 V
      Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder unlocked 11 to 14 V
      5A-11 (ACT-) - Body ground LG - Body ground Door lock motor unlock drive output signal (rear door RH) Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off Below 1 V
      Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder locked 11 to 14 V
      5A-13 (ACT+) - Body ground G - Body ground Door lock motor lock drive output signal (driver door and rear door RH) Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off Below 1 V
      Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder locked 11 to 14 V
      5A-33 (FRCY) - Body ground R - Body ground Front door courtesy light switch assembly RH input signal Front door RH open Below 1 V
      Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off Below 1 V
      Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder locked 11 to 14 V
      Front door RH closed Pulse generation
      5C-8 (ACT+) - Body ground W - Body ground Door lock motor lock drive output signal (rear door LH) Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off Below 1 V
      Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder locked 11 to 14 V
      5C-3 (ACT-) - Body ground LG - Body ground Door lock motor unlock drive output signal (front passenger door) Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off Below 1 V
      Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder unlocked 11 to 14 V
      5C-9 (ACT+) - Body ground G - Body ground Door lock motor lock drive output signal (front passenger door) Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off Below 1 V
      Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder unlocked 11 to 14 V
      5C-12 (ACT-) - Body ground LG - Body ground Door lock motor unlock drive output signal (rear door LH) Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off Below 1 V
      Power window regulator master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder unlocked 11 to 14 V
      5C-30 (LSWL) - Body ground B - Body ground Rear door LH unlock detection switch input signal Rear door LH unlocked Below 1 V
      Engine switch off, all doors closed and rear door LH locked Pulse generation
      5C-44 (FLCY) - Body ground R - Body ground Front door courtesy light switch assembly LH input signal Front door LH open Below 1 V
      Front door LH closed Pulse generation
      5D-27 (BZR) - Body ground G - Body ground Wireless door lock buzzer output signal Engine switch off, all doors closed and electrical key transmitter sub-assembly off → on (answer-back) Below 1V → Pulse generation
      K10-3 (LCTY) - Body ground G - Body ground Rear door courtesy light switch assembly LH input signal Rear door LH open Below 1 V
      Rear door LH closed Pulse generation
      K11-6 (RCTY) - Body ground G - Body ground Rear door courtesy light switch assembly RH input signal Rear door RH open Below 1 V
      Rear door RH closed Pulse generation
      K11-7 (LSFL) - Body ground SB - Body ground Front door LH unlock detection switch input signal Front door LH unlocked Below 1 V
      Engine switch off, all doors closed and front door LH locked Pulse generation
      K11-18 (LSFR) - Body ground SB - Body ground Front door RH unlock detection switch input signal Front door RH unlocked Below 1 V
      Engine switch off, all doors closed and front door RH locked Pulse generation
      K12-2 (LSWR) - Body ground B - Body ground Rear door RH unlock detection switch input signal Rear door RH unlocked Below 1 V
      Engine switch off, all doors closed and rear door RH locked 11 to 14 V

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Disconnect the A21 and K74 certification ECU (smart key ECU assembly) connectors.

    2. Measure the resistance and voltage according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A21-2 (+B) - Body ground W - Body ground Battery power supply Always 11 to 14 V
      K74-5 (IG) - Body ground B - Body ground Ignition power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      A21-10 (CUTB) - Body ground

      P*1 - Body ground

      B*2 - Body ground

      		 Dark current cut fuse pin input signal Always 11 to 14 V
      A21-11 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

      • *1: for LHD

      • *2: for RHD

    3. Reconnect the A21 and K74 certification ECU (smart key ECU assembly) connectors.

    4. Measure the voltage according to the value(s) in the table below.

      for LHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      T1-5 (RCO) - A21-11 (E) SB - W-B Output to door control receiver (Power supply for door control receiver. Certification ECU (smart key ECU assembly) outputs 5 V when receiver starts operating.)

      Procedure:


      1. Engine switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. Electrical key transmitter sub-assembly brought outside detection area*1 but kept inside wireless function operational area*2

      4. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

      Pulse generation

      (See waveform 1)
      T1-6 (CSEL) - A21-11 (E) P - W-B Communication channel switching circuit

      Procedure:


      1. Engine switch off

      2. All doors closed

      		 Below 1 V → 4.5 to 6 V → Below 1 V
      T1-7 (ASEL) - A21-11 (E) B - W-B Communication antenna switching circuit

      Procedure:


      1. Engine switch off

      2. All doors closed

      		 Below 1 V → 4.5 to 6 V → Below 1 V
      T1-17 (RDAM) - A21-11(E) LG - W-B Door control receiver verifies data received from electrical key transmitter sub-assembly. Door control receiver sends data to ECU and intermittently grounds 12 V signal from certification ECU (smart key ECU assembly).

      Procedure:


      1. Engine switch off

      2. All doors locked

      3. Electrical key transmitter sub-assembly brought outside detection area*1 but kept inside wireless function operational area*2

      4. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

      Pulse generation

      (See waveform 2)
      for RHD
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      U1-5 (RCO) - A21-11 (E) LG - W-B Output to door control receiver (Power supply for door control receiver. Certification ECU (smart key ECU assembly) outputs 5 V when receiver starts operating.)

      Procedure:


      1. Engine switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. Electrical key transmitter sub-assembly brought outside detection area*1 but kept inside wireless function operational area*2

      4. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

      Pulse generation

      (See waveform 1)
      U1-6 (CSEL) - A21-11 (E) P - W-B Communication channel switching circuit

      Procedure:


      1. Engine switch off

      2. All doors closed

      		 Below 1 V → 4.5 to 6 V → Below 1 V
      U1-7 (ASEL) - A21-11 (E) L - W-B Communication antenna switching circuit

      Procedure:


      1. Engine switch off

      2. All doors closed

      		 Below 1 V → 4.5 to 6 V → Below 1 V
      U1-17 (RDAM) - A21-11(E) R - W-B Door control receiver verifies data received from electrical key transmitter sub-assembly. Door control receiver sends data to ECU and intermittently grounds 12 V signal from certification ECU (smart key ECU assembly).

      Procedure:


      1. Engine switch off

      2. All doors locked

      3. Electrical key transmitter sub-assembly brought outside detection area*1 but kept inside wireless function operational area*2

      4. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

      Pulse generation

      (See waveform 2)

      • *1: For details about the areas that are outside the entry function detection area, refer to Operation Check.

        Click here

      • *2: For details about the areas that are inside the wireless function operational area, refer to Operation Check.

        Click here

    5. B002DUGC27
      *a Before lock or unlock switch of electrical key transmitter sub-assembly pressed
      *b After lock or unlock switch of electrical key transmitter sub-assembly pressed

      Using an oscilloscope, check waveform 1.

      Tech Tips

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Waveform 1 (Reference)
      Item Content
      Tester connection

      T1-5 (RCO) - A21-11 (E)*3

      U1-5 (RCO) - A21-11 (E)*4
      Tool setting 2 V/DIV., 500 ms/DIV.
      Condition

      Procedure:


      1. Engine switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. Electrical key transmitter sub-assembly brought outside detection area*1 but kept inside wireless function operational area*2

      4. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

      • *1: For details about the areas that are outside the entry function detection area, refer to Operation Check.

        Click here

      • *2: For details about the areas that are inside the wireless function operational area, refer to Operation Check.

        Click here

      • *3: for LHD

      • *4: for RHD

    6. B002DVSC30
      *a Before lock or unlock switch of electrical key transmitter sub-assembly pressed
      *b After lock or unlock switch of electrical key transmitter sub-assembly pressed

      Using an oscilloscope, check waveform 2.

      Tech Tips

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      Waveform 2 (Reference)
      Item Content
      Tester connection

      T1-17 (RDAM) - A21-11 (E)*3

      U1-17 (RDAM) - A21-11 (E)*4
      Tool setting 5 V/DIV., 500 ms/DIV.
      Condition

      Procedure:


      1. Engine switch off

      2. All doors locked

      3. Electrical key transmitter sub-assembly brought outside detection area*1 but kept inside wireless function operational area*2

      4. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

      • *1: For details about the areas that are outside the entry function detection area, refer to Operation Check.

        Click here

      • *2: For details about the areas that are inside the wireless function operational area, refer to Operation Check.

        Click here

      • *3: for LHD

      • *4: for RHD

  3. CHECK DOOR CONTROL RECEIVER (w/ Tire Pressure Warning System)

    B002DN8E03

    1. Disconnect the T27 door control receiver connector.

    2. Measure the resistance and voltage according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      T27-1 (IG) - Body ground P - Body ground Ignition power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      T27-7 (+B) - Body ground W - Body ground Battery power supply Always 11 to 14 V
      T27-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the T27 door control receiver connector.

    4. Measure the voltage according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      T27-6 (CSEL) - T27-12 (GND) P - W-B Communication channel switching circuit

      Procedure:


      1. Engine switch off

      2. All doors closed

      		 Below 1 V → 4.5 to 6 V → Below 1 V
      T27-9 (DATA) - T27-12 (GND) R - W-B Entry and start system recovery code output

      Procedure:


      1. Engine switch off

      2. All doors locked

      3. Electrical key transmitter sub-assembly brought outside detection area*1 but kept inside wireless function operational area*2

      4. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

      		 Pulse generation (See waveform 2)
      T27-10 (+5) - T27-12 (GND) SB - W-B Receive mode switching signal input

      Procedure:


      1. Engine switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. Electrical key transmitter sub-assembly brought outside detection area*1 but kept inside wireless function operational area*2

      4. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

      		 Pulse generation (See waveform 1)
      T27-11 (ASEL) - T27-12 (GND) B - W-B Communication antenna switching circuit

      Procedure:


      1. Engine switch off

      2. All doors closed

      		 Below 1 V → 4.5 to 6 V → Below 1 V

      • *1: For details about the areas that are outside the entry function detection area, refer to Operation Check.

        Click here

      • *2: For details about the areas that are inside the wireless function operational area, refer to Operation Check.

        Click here

  4. CHECK DOOR CONTROL RECEIVER (w/o Tire Pressure Warning System)

    B002E3KE02

    1. Disconnect the T26 door control receiver connector.

    2. Measure the resistance according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      T26-6 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the T26 door control receiver connector.

    4. Measure the voltage according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      T26-5 (CSEL) - T26-6 (GND) P - W-B Communication channel switching circuit

      Procedure:


      1. Engine switch off

      2. All doors closed

      		 Below 1 V → 4.5 to 6 V → Below 1 V
      T26-3 (DATA) - T26-6 (GND) R - W-B Entry and start system recovery code output

      Procedure:


      1. Engine switch off

      2. All doors locked

      3. Electrical key transmitter sub-assembly brought outside detection area*1 but kept inside wireless function operational area*2

      4. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

      		 Pulse generation (See waveform 2)
      T26-2 (+5) - T26-6 (GND) SB - W-B Receive mode switching signal input

      Procedure:


      1. Engine switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. Electrical key transmitter sub-assembly brought outside detection area*1 but kept inside wireless function operational area*2

      4. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

      		 Pulse generation (See waveform 1)
      T26-4 (ASEL) - T26-6 (GND) B - W-B Communication antenna switching circuit

      Procedure:


      1. Engine switch off

      2. All doors closed

      		 Below 1 V → 4.5 to 6 V → Below 1 V

      • *1: For details about the areas that are outside the entry function detection area, refer to Operation Check.

        Click here

      • *2: For details about the areas that are inside the wireless function operational area, refer to Operation Check.

        Click here