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Terminals Of Ecu [08/2015 - 09/2019]

  1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
    GTY716578Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the C27 and C29 certification ECU (smart key ECU assembly) connectors.
    2. Measure the voltage and resistance according to the value(s) in the table below.

      HINT: 

      Measure the values on the wire harness side with the connector disconnected.

      Tester Connection Input/ Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      C29-11 (E) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      C29-10 (+B) - C29- 11 (E) Input P - W-B +B power supply Always 11 to 14 V -
      C27-4 (CUTB) - C29-11 (E) Input GR - W-B Dark current cut pin* Always 11 to 14 V -

      *: In order to prevent the vehicle battery from being depleted when the vehicle is shipped long distances, a fuse that cuts unnecessary electrical load while the vehicle is being shipped is set in the circuit. If the fuse is removed, the circuit becomes open. If the fuse that is between the vehicle battery and terminal CUTB is removed and the circuit is open, the certification ECU (smart key ECU assembly) changes to a certain control mode (example: the transmission of electric waves every 0.25 seconds. That form the detection area stops).

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

    3. Reconnect the C27 and C29 certification ECU (smart key ECU assembly) connectors.
    4. Measure the voltage according to the value(s) in the table below.
      Tester Connection Input/ Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      C27-3 (IG1D) - C29-11 (E) Input B - W-B IG power supply Engine switch off → on (IG) Below 1 V → 11 to 14 V Engine Switch
      C29-4 (CLG1) - C29-11 (E) Output G - W-B Output to driver door electrical key antenna
      (request signal (challenge) is sent to door electrical key antenna from certification ECU (smart key ECU assembly) to form detection area)      		 Procedure:
      1. Engine switch off
      2. All doors closed
      3. Electrical key transmitter sub-assembly not inside vehicle
      4. All doors locked through wireless operation (electrical key transmitter sub-assembly brought inside detection area*2)
      		 Pulse generation
      (See waveform 1)      		 Overhead + Driver Side (key diagnostic mode)
      Procedure:
      1. Engine switch off
      2. All doors closed
      3. Electrical key transmitter sub-assembly not inside vehicle
      4. All doors locked through wireless operation (electrical key transmitter sub-assembly brought outside detection area*2)
      		 Pulse generation
      (See waveform 2)
      C29-4 (CLG1) - C29-11 (E) Input G - W-B Input to driver door lock sensor
      (front door outside handle assembly LH lock sensor on signal is sent to the certification ECU (smart key ECU assembly))      		 Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. All doors locked through wireless operation (electrical key transmitter sub-assembly brought outside detection area*2)
      5. Driver door lock sensor touched
      		 Pulse generation
      (See waveform 8)      		 D-Door Trigger Switch
      C29-4 (CLG1) - C29-11 (E) Input G - W-B Input to driver door unlock sensor
      (when system is in unlock standby mode and unlock sensor is touched, door electrical key antenna sends unlock sensor input signal (sensing) to certification ECU (smart key ECU assembly))      		 Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors locked
      4. Electrical key transmitter sub-assembly not near the vehicle
      5. Driver door unlock sensor touched
      		 Pulse generation
      (See waveform 9)      		 D-Door Touch Sensor
      C29-3 (CG1B) - C29-11 (E) Output SB - W-B Output to driver door electrical key antenna (terminal on opposite side of component from CLG1 output terminal) Procedure:
      1. Engine switch off
      2. All doors closed
      3. Electrical key transmitter sub-assembly not inside vehicle
      4. All doors locked through wireless operation (electrical key transmitter sub-assembly brought inside detection area*2)
      		 Pulse generation
      (See waveform 3)      		 Overhead + Driver Side (key diagnostic mode)
      Procedure:
      1. Engine switch off
      2. All doors closed
      3. Electrical key transmitter sub-assembly not inside vehicle
      4. All doors locked through wireless operation (electrical key transmitter sub-assembly brought outside detection area*2)
      		 Pulse generation
      (See waveform 4)
      C29-21 (CLG5) - C29-11 (E) Output LG - W-B Output to No. 1 indoor electrical key antenna assembly (front floor) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. Within 30 seconds of closing any door using the door outside handle
      		 Pulse generation
      (See waveform 5)      		 Overhead + Front Room (key diagnostic mode)
      C29-20 (CG5B) - C29-11 (E) Output P - W-B Output to No. 1 indoor electrical key antenna assembly (front floor) (terminal on opposite side of component from CLG5 output terminal) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. Within 30 seconds of closing any door using the door outside handle
      		 Pulse generation
      (See waveform 5)      		 Overhead + Front Room (key diagnostic mode)
      C28-15 (CLG6) - C29-11 (E) Output BE - W-B Output to No. 2 indoor electrical key antenna assembly (rear floor) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. Within 30 seconds of closing any door using the door outside handle
      		 Pulse generation
      (See waveform 5)      		 Overhead + Rear Room (key diagnostic mode)
      C28-14 (CG6B) - C29-11 (E) Output GR - W-B Output to No. 2 indoor electrical key antenna assembly (rear floor) (terminal on opposite side of component from CLG6 output terminal) Proceed:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. Within 30 seconds of closing any door using the door outside handle
      		 Pulse generation
      (See waveform 5)      		 Overhead + Rear Room (key diagnostic mode)
      C28-18 (RCO) - C29- 11 (E) Output L - W-B Output to door control and tire pressure monitoring system receiver assembly (Power supply for electrical key and TPMS receiver assembly. 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 detection area but kept inside wireless function operational area
      3. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
      		 Pulse generation
      (See waveform 6)      		 -
      C28-21 (ASEL) - C29-11 (E)*1 Output Y - W-B Wireless charging system stop signal output Proceed:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly inside vehicle
      3. Turn the engine switch on (ACC)
      		 Below 1 V → 4.5 to 6 V
      (within 1 second of engine switch turned on (ACC))      		 -
      C28-19 (CSEL) - C29-11 (E) Output SB - W-B Communication channel switching circuit Proceed:
      1. Engine switch off
      2. All doors closed
      		 Below 1 V → pulse generation -
      C28-20(RDAM) - C29-11 (E) Input G - W-B Electrical key and TPMS receiver assembly verifies data received from electrical key transmitter sub-assembly.
      Electrical key and TPMS receiver assembly sends data from electrical key transmitter sub-assembly to certification ECU (smart key ECU assembly) (Door control and tire pressure monitoring system receiver assembly intermittently grounds 12 V signal from certification ECU (smart key ECU assembly)).      		 Proceed:
      1. Engine switch off
      2. All doors locked
      3. Electrical key transmitter sub-assembly not inside vehicle
      4. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
      5. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
      		 Pulse generation
      (See waveform 7)      		 -
      1. *1: w/ Wireless Charging System
      2. *2: For details about the entry function detection area, refer to Operation Check (Refer to OPERATION CHECK [08/2015 - 09/2019] ).
    5. Using an oscilloscope, check waveform 1.
      GTY588663Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      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 C29-4 (CLG1) - C29-11 (E)
      Tool Setting 5 V/DIV., 500 ms./DIV.
      Condition Procedure:
      1. Engine switch off
      2. All doors closed
      3. Electrical key transmitter sub-assembly not inside vehicle
      4. All doors locked through wireless operation

        (electrical key transmitter sub-assembly brought inside detection area*)
      1. *: For details about the entry function detection area, refer to Operation Check (Refer to OPERATION CHECK [08/2015 - 09/2019] ).
    6. Using an oscilloscope, check waveform 2.
      GTY548567Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      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 C29-4 (CLG1) - C29-11 (E)
      Tool Setting 5 V/DIV., 100 ms./DIV.
      Condition Procedure:
      1. Engine switch off
      2. All doors closed
      3. Electrical key transmitter sub-assembly not inside vehicle
      4. All doors locked through wireless operation

        (electrical key transmitter sub-assembly brought outside detection area*)
      1. *: For details about the entry function detection area, refer to Operation Check (Refer to OPERATION CHECK [08/2015 - 09/2019] ).
    7. Using an oscilloscope, check waveform 3.
      NOTE:

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

      GTY713836Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 3 (REFERENCE)

      Item Content
      Tester Connection C29-3 (CG1B) - C29-11 (E)
      Tool Setting 5 V/DIV., 500 ms./DIV.
      Condition Procedure:
      1. Engine switch off
      2. All doors closed
      3. Electrical key transmitter sub-assembly not inside vehicle
      4. All doors locked through wireless operation

        (electrical key transmitter sub-assembly brought inside detection area*)
      1. *: For details about the entry function detection area, refer to Operation Check (Refer to OPERATION CHECK [08/2015 - 09/2019] ).
    8. Using an oscilloscope, check waveform 4.
      NOTE:

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

      GTY715901Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 4 (REFERENCE)

      Item Content
      Tester Connection C29-3 (CG1B) - C29-11 (E)
      Tool Setting 5 V/DIV., 100 ms./DIV.
      Condition Procedure:
      1. Engine switch off
      2. All doors closed
      3. Electrical key transmitter sub-assembly not inside vehicle
      4. All doors locked through wireless operation

        (electrical key transmitter sub-assembly brought outside detection area*)
      1. *: For details about the entry function detection area, refer to Operation Check (Refer to OPERATION CHECK [08/2015 - 09/2019] ).
    9. Using an oscilloscope, check waveform 5.
      GTY691151Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

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

      WAVEFORM 5 (REFERENCE)

      Item Content
      Tester Connection C29-21 (CLG5) - C29-11 (E)
      C29-20 (CG5B) - C29-11 (E)
      Tool Setting 2 V/DIV., 500 ms./DIV.
      Condition Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. Within 30 seconds of closing any door using the door outside handle
      TEXT IN ILLUSTRATION

      *a For 30 seconds after closing any door using the door outside handle
      *b 30 seconds or more have elapsed after closing any door using the door outside handle
    10. Using an oscilloscope, check waveform 6.
      GTY278665Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

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

      WAVEFORM 6 (REFERENCE)

      Item Content
      Tester Connection C28-18 (RCO) - C29-11 (E)
      Tool Setting 2 V/DIV., 500 ms./DIV.
      Condition Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
      3. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
      TEXT IN ILLUSTRATION

      *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
    11. Using an oscilloscope, check waveform 7.
      GTY277201Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

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

      WAVEFORM 7 (REFERENCE)

      Item Content
      Tester Connection C28-20 (RDAM) - C29-11 (E)
      Tool Setting 5 V/DIV., 500 ms./DIV.
      Condition Proceed:
      1. Engine switch off
      2. All doors locked
      3. Electrical key transmitter sub-assembly not inside vehicle
      4. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
      5. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
      TEXT IN ILLUSTRATION

      *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
    12. Using an oscilloscope, check waveform 8.
      GTY733630Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

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

      WAVEFORM 8 (REFERENCE)

      Item Content
      Tester Connection C29-4 (CLG1) - C29-11 (E)
      Tool Setting 5 V/DIV., 40 ms./DIV.
      Condition Proceed:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. All doors locked through wireless operation (electrical key transmitter sub-assembly brought outside detection area*)
      5. Lock sensor not touched → touched
      1. *1: For details about the entry function detection area, refer to Operation Check (Refer to OPERATION CHECK [08/2015 - 09/2019] ).
      TEXT IN ILLUSTRATION

      *a Lock sensor not touched
      *b Lock sensor touched
    13. Using an oscilloscope, check waveform 9.
      GTY709480Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

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

      WAVEFORM 9 (REFERENCE)

      Item Content
      Tester Connection C29-4 (CLG1) - C29-11 (E)
      Tool Setting 5 V/DIV., 40 ms./DIV.
      Condition Proceed:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors locked
      4. Electrical key transmitter sub-assembly not near the vehicle
      5. Unlock sensor not touched → touched
      TEXT IN ILLUSTRATION

      *a Unlock sensor not touched
      *b Unlock sensor touched
  2. CHECK DRIVER SIDE JUNCTION BLOCK AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 
    GTY710410Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TEXT IN ILLUSTRATION

    *1 Main Body ECU (Multiplex Network Body ECU) - -
    1. Remove the main body ECU (multiplex network body ECU) from the driver side junction block (Refer to REMOVAL [08/2015 - ] ).
    2. Measure the voltage and resistance according to the value(s) in the table below.

      HINT: 

      Measure the values on the wire harness side with the connector disconnected.

      Tester Connection Input/ Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      MB-11 (GND1) - Body ground - - Ground Always Below 1 Ω -
      MB-31 (BECU) - Body ground Input - Battery power supply (for CPU) Always 11 to 14 V -
      MB-30 (ACC) - Body ground Input - ACC power supply Engine switch on (ACC) 11 to 14 V ACC SW
      MB-32 (IG) - Body ground Input - IG power supply Engine switch on (IG) 11 to 14 V IG SW

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

    3. Install the main body ECU (multiplex network body ECU) to the driver side junction block (Refer to INSTALLATION [08/2015 - ] ).
    4. Measure the voltage according to the value(s) in the table below.
      Tester Connection Input/ Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      M6-6 (FLCY) - Body ground Input Y - Body ground Front door courtesy light switch LH input Front door LH open Below 1 V FL Door Courtesy
      Front door LH closed Pulse generation
      (See waveform 2)
      M6-27 (FRCY) - Body ground Input LG - Body ground Front door courtesy light switch RH input Front door RH open Below 1 V FR Door Courtesy
      Front door RH closed Pulse generation
      (See waveform 2)
      1H-36 (LCTY) - Body ground Input P - Body ground Rear door courtesy light switch LH input*1
      Upper access panel lock assembly LH input*2
      Lower access panel lock assembly LH input*2      		 Rear door LH open Below 1 V RL Door Courtesy SW
      Rear door LH closed Pulse generation
      (See waveform 2)
      1D-30 (RCTY) - Body ground Input V - Body ground Rear door courtesy light switch RH input*1
      Upper access panel lock assembly RH input*2
      Lower access panel lock assembly RH input*2      		 Rear door RH open Below 1 V RR Door Courtesy SW
      Rear door RH closed Pulse generation
      (See waveform 2)
      M6-29 (L2) - Body ground Input SB - Body ground Driver door key-linked lock input Driver door key cylinder turned to neutral position → on (lock) Pulse generation → Below 1 V
      (See waveform 1)      		 Door key SW-Lock
      M6-2 (UL3) - Body ground Input G - Body ground Driver door key-linked unlock input Driver door key cylinder turned to neutral position → on (unlock) Pulse generation → Below 1 V
      (See waveform 1)      		 D Door key SW-UL
      1D-1 (ACT+) - Body ground Output R - Body ground Door lock motor unlock drive output (except driver door) Door control switch or driver door key cylinder off Below 1 V -
      Door control switch or driver door key cylinder unlocked 11 to 14 V
      1H-12 (ACT+) - Body ground Output LA-R - Body ground Door lock motor unlock drive output (except driver door) Door control switch or driver door key cylinder off Below 1 V -
      Door control switch or driver door key cylinder unlocked 11 to 14 V
      1D-2 (ACTD) - Body ground Output B - Body ground Driver door lock motor unlock drive output Door control switch or driver door key cylinder off Below 1 V -
      Door control switch or driver door key cylinder unlocked 11 to 14 V
      1H-10 (ACT-) - Body ground Output LA-G - Body ground Door lock motor lock drive output (all doors) Door control switch or driver door key cylinder off Below 1 V -
      Door control switch or driver door key cylinder locked 11 to 14 V
      1D-3 (ACT-) - Body ground Output G - Body ground Door lock motor lock drive output (all doors) Door control switch or driver door key cylinder off Below 1 V -
      Door control switch or driver door key cylinder locked 11 to 14 V
      1D-11 (LSFL) - Body ground Input P - Body ground Front door LH unlock detection switch input Front door LH unlocked Below 1 V FL Door Lock Pos
      Engine switch off, all doors closed and front door LH locked Pulse generation
      (See waveform 1)
      1D-24 (LSFR) - Body ground Input GR - Body ground Front door RH unlock detection switch input Front door RH unlocked Below 1 V FR Door Lock Pos
      Engine switch off, all doors closed and front door RH locked Pulse generation
      (See waveform 1)
      1A-41 (LSR) - Body ground*1 Input Y - Body ground Rear door RH unlock detection switch input Rear door RH or LH unlocked Below 1 V RL-Door Lock Pos SW
      Engine switch off, all doors closed and rear door RH and LH locked Pulse generation
      (See waveform 1)
      1H-27 (LSR) - Body ground*1 Input L - Body ground Rear door LH unlock detection switch input Rear door LH or RH unlocked Below 1 V RR-Door Lock Pos SW
      Engine switch off, all doors closed and rear door LH and RH locked Pulse generation
      (See waveform 1)
      1F-29 (BZR) - Body ground Output Y - Body ground Wireless door lock buzzer signal Wireless door lock buzzer off Below 1 V  
      Wireless door lock buzzer on Pulse generation
      1. *1: for Double Cab
      2. *2: for Access Cab

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

    5. Using an oscilloscope, check waveform 1.
      GTY721626Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      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 1D-11 (LSFL) - Body ground
      1D-24 (LSFR) - Body ground
      1A-41 (LSR) - Body ground
      1H-27 (LSR) - Body ground
      M6-29 (L2) - Body ground
      M6-2 (UL3) - Body ground
      Tool Setting 2 V/DIV., 200 ms./DIV.
      Condition Door locked → unlocked
      TEXT IN ILLUSTRATION

      *a Door locked
      *b Door unlocked
    6. Using an oscilloscope, check waveform 2.
      GTY721625Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      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 M6-6 (FLCY) - Body ground
      M6-27 (FRCY) - Body ground
      1H-36 (LCTY) - Body ground
      1D-30 (RCTY) - Body ground
      Tool Setting 2 V/DIV., 200 ms./DIV.
      Condition Door closed → opened
      TEXT IN ILLUSTRATION

      *a Door closed
      *b Door open
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