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Terminals Of Ecu [11/2018 - 02/2019]

WARNING: This page is about a different variant/trim than selected.
  1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
    GTY939115Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the G54 certification ECU (smart key ECU assembly) connector.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      Tester Connection Wiring Color Input/Output Terminal Description Condition Specified Condition Related Data List Item
      G54-18 (E) - Body ground W-B - Body ground - Ground Always Below 1 Ω -
      G54-4 (+B) - G54-18 (E) P - W-B Input Power supply Power switch off 11 to 14 V -
      G54-15 (CUTB) - G54-18 (E) V - W-B Input Dark current cut pin* Power switch off 11 to 14 V -
      1. *: In order to prevent the vehicle auxiliary 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 installed in the circuit. If the fuse is removed, the circuit becomes open. If the fuse that is between the vehicle auxiliary 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 radio waves every 0.25 seconds, which form the detection area, stops).
    3. Reconnect the G54 certification ECU (smart key ECU assembly) connector.
    4. Measure the voltage and check for pulses according to the value(s) in the table below.
      Tester Connection Wiring Color Input/Output Terminal Description Condition Specified Condition Related Data List Item
      G54-17 (IG1D) - G54-18 (E) L - W-B Output IG power supply Power switch off → on (IG) 1 V or less → 9 V or higher Power Source Control 
      1. IG Relay Monitor (Outside)
      G54-16 (ACCD) - G54-18 (E) G - W-B Output ACC power supply Power switch off → on (ACC) 1 V or less → 8.5 V or higher Power Source Control 
      1. ACC Relay Monitor
      M7-17 (CLG1) - G54-18 (E) R - W-B Output 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. Power 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*)

      		 Pulse generation
      (See waveform 1)      		 -
      Procedure:
      1. Power 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*)

      		 Pulse generation
      (See waveform 2)
      M7-17 (CLG1) - G54-18 (E) R - W-B Input 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. Power 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. Driver door lock sensor touched
      		 Pulse generation
      (See waveform 3)      		 Smart Key 
      1. D-Door Trigger Switch
      M7-17 (CLG1) - G54-18 (E) R - W-B Input 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. Power 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 4)      		 Smart Key 
      1. D-Door Touch Sensor
      M7-16 (CG1B) - G54-18 (E) GR- W-B Output Output to driver door electrical key antenna (terminal on opposite side of component from CLG1 output terminal) Procedure:
      1. Power 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*)

      		 Pulse generation
      (See waveform 5)      		 -
      Procedure:
      1. Power 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*)

      		 Pulse generation
      (See waveform 6)
      M7-15 (CLG2) - G54-18 (E) R - W-B Output Output to front passenger 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. Power 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*)

      		 Pulse generation
      (See waveform 1)      		 -
      Procedure:
      1. Power 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*)

      		 Pulse generation
      (See waveform 2)
      M7-15 (CLG2) - G54-18 (E) R - W-B Input Input to front passenger door lock sensor
      (front door outside handle assembly RH lock sensor ON signal is sent to the certification ECU (smart key ECU assembly))      		 Procedure:
      1. Power 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. Front passenger door lock sensor touched
      		 Pulse generation
      (See waveform 3)      		 Smart Key 
      1. P-Door Touch Sensor
      M7-15 (CLG2) - G54-18 (E) R - W-B Input Input to front passenger 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. Power 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. Front passenger door unlock sensor touched
      		 Pulse generation
      (See waveform 4)      		 Smart Key 
      1. P-Door Touch Sensor
      M7-14 (CG2B) - G54-18 (E) W - W-B Output Output to front passenger door electrical key antenna (terminal on opposite side of component from CLG2 output terminal) Procedure:
      1. Power 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*)

      		 Pulse generation
      (See waveform 5)      		 -
      Procedure:
      1. Power 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*)

      		 Pulse generation
      (See waveform 6)
      M7-13 (CLG8) - G54-18 (E) R - W-B Output Output to electrical key antenna (outside luggage compartment) Procedure:
      1. Power switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. Back door opener switch assembly off → on
      		 Pulse generation
      (See waveform 7)      		 -
      M7-12 (CG8B) - G54-18 (E) L - W-B Output Output to electrical key antenna (outside luggage compartment) (terminal on opposite side of component from CLG8 output terminal) Procedure:
      1. Power switch off
      2. Electrical key transmitter sub-assembly brought outside vehicle
      3. All doors closed
      4. Back door opener switch assembly off → on
      		 Pulse generation
      (See waveform 7)      		 -
      M7-26 (TSW5) - G54-18 (E) B - W-B Input Back door opener switch assembly (unlock switch) signal input Back door opener switch assembly (unlock switch) off → on Pulse generation
      (See waveform 8)      		 Smart Key 
      1. Tr/B-Door Unlock SW
      M7-27 (TSW6) - G54-18 (E) R - W-B Input Back door opener switch assembly (lock switch) signal input Back door opener switch assembly (lock switch) off → on Pulse generation
      (See waveform 8)      		 Smart Key 
      1. Tr/B-Door Unlock SW
      M7-18 (RCO) - G54-18 (E) L - W-B Output 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. Power 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 9)      		 -
      M7-19 (RDAM) - G54-18 (E) G - W-B Input Door control receiver verifies data received from electrical key transmitter sub-assembly.
      Door control receiver sends data from electrical key transmitter sub-assembly to certification ECU (smart key ECU assembly) (Door control receiver intermittently grounds 12 V signal from certification ECU (smart key ECU assembly)).      		 Proceed:
      1. Power 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 10)      		 -
      M7-20 (CSEL) - G54-18 (E) BE - W-B Output Communication channel switching circuit Procedure:
      1. Power switch off
      2. All doors closed
      		 Pulse generation -
      1. *: For details about the entry function detection area, refer to Operation Check.

        Refer to OPERATION CHECK [11/2018 - 02/2019] 

    5. Using an oscilloscope, check the waveform of the ECU.
      NOTE:

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

      1. Waveform 1
        Item Content
        Tester Connection M7-17 (CLG1) - G54-18 (E)
        M7-15 (CLG2) - G54-18 (E)
        Tool Setting 5 V/DIV., 500 ms/DIV.
        Condition Procedure:
        1. Power 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*)
        Fig 1: Waveform 1
        GTY448796Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        1. *: For details about the entry function detection area, refer to Operation Check.

          Refer to OPERATION CHECK [11/2018 - 02/2019] 

      2. Waveform 2
        Item Content
        Tester Connection M7-17 (CLG1) - G54-18 (E)
        M7-15 (CLG2) - G54-18 (E)
        Tool Setting 5 V/DIV., 100 ms/DIV.
        Condition Procedure:
        1. Power 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*)
        Fig 2: Waveform 2
        GTY427636Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        1. *: For details about the entry function detection area, refer to Operation Check.

          Refer to OPERATION CHECK [11/2018 - 02/2019] 

      3. Waveform 3
        Fig 3: Waveform 3
        GTY430392Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Lock sensor not touched
        *b Lock sensor touched
        FRONT DOOR OUTSIDE HANDLE ASSEMBLY LH

        Item Content
        Tester Connection M7-17 (CLG1) - G54-18 (E)
        Tool Setting 5 V/DIV., 40 ms/DIV.
        Condition Procedure:
        1. Power 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. Driver door lock sensor touched
        FRONT DOOR OUTSIDE HANDLE ASSEMBLY RH

        Item Content
        Tester Connection M7-15 (CLG2) - G54-18 (E)
        Tool Setting 5 V/DIV., 40 ms/DIV.
        Condition Procedure:
        1. Power 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. Front passenger door lock sensor touched
        1. *: For details about the entry function detection area, refer to Operation Check.

          Refer to OPERATION CHECK [11/2018 - 02/2019] 

      4. Waveform 4
        FRONT DOOR OUTSIDE HANDLE ASSEMBLY LH

        Item Content
        Tester Connection M7-17 (CLG1) - G54-18 (E)
        Tool Setting 5 V/DIV., 50 ms/DIV.
        Condition Procedure:
        1. Power 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
        Fig 4: Waveform 4
        GTY438196Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Unlock sensor not touched
        *b Unlock sensor touched
        FRONT DOOR OUTSIDE HANDLE ASSEMBLY RH

        Item Content
        Tester Connection M7-15 (CLG2) - G54-18 (E)
        Tool Setting 5 V/DIV., 50 ms/DIV.
        Condition Procedure:
        1. Power 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. Front passenger door unlock sensor touched
      5. Waveform 5
        Item Content
        Tester Connection M7-16 (CG1B) - G54-18 (E)
        M7-14 (CG2B) - G54-18 (E)
        Tool Setting 5 V/DIV., 500 ms/DIV.
        Condition Procedure:
        1. Power 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*)
        Fig 5: Waveform 5
        GTY504760Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        1. *: For details about the entry function detection area, refer to Operation Check.

          Refer to OPERATION CHECK [11/2018 - 02/2019] 

      6. Waveform 6
        Item Content
        Tester Connection M7-16 (CG1B) - G54-18 (E)
        M7-14 (CG2B) - G54-18 (E)
        Tool Setting 5 V/DIV., 100 ms/DIV.
        Condition Procedure:
        1. Power 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*)
        Fig 6: Waveform 6
        GTY499393Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        1. *: For details about the entry function detection area, refer to Operation Check.

          Refer to OPERATION CHECK [11/2018 - 02/2019] 

      7. Waveform 7
        Item Content
        Tester Connection M7-13 (CLG8) - G54-18 (E)
        M7-12 (CG8B) - G54-18 (E)
        Tool Setting 2 V/DIV., 500 ms/DIV.
        Condition Procedure:
        1. Power switch off
        2. Electrical key transmitter sub-assembly brought outside vehicle
        3. All doors closed
        4. Back door opener switch assembly off → on
        Fig 7: Waveform 7
        GTY432845Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      8. Waveform 8
        Item Content
        Tester Connection M7-26 (TSW5) - G54-18 (E)
        Tool Setting 2 V/DIV., 500 ms/DIV.
        Condition Back door opener switch assembly (unlock switch) off → on
        Fig 8: Waveform 8
        GTY379040Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Checking for switch ON signal at short intervals
        Item Content
        Tester Connection M7-27 (TSW6) - G54-18 (E)
        Tool Setting 2 V/DIV., 500 ms/DIV.
        Condition Back door opener switch assembly (lock switch) off → on
      9. Waveform 9
        Item Content
        Tester Connection M7-18 (RCO) - G54-18 (E)
        Tool Setting 2 V/DIV., 500 ms/DIV.
        Condition Procedure:
        1. Power 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
        Fig 9: Waveform 9
        GTY376258Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *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
      10. Waveform 10
        Item Content
        Tester Connection M7-19 (RDAM) - G54-18 (E)
        Tool Setting 5 V/DIV., 500 ms/DIV.
        Condition Procedure:
        1. Power 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
        Fig 10: Waveform 10
        GTY367752Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *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
  2. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 
    GTY913443Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 Main body ECU (multiplex network body ECU) - -
    1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

      Refer to REMOVAL [11/2018 - 02/2019]

    2. Measure the voltage and resistance according to the value(s) in the table below.
      Tester Connection Wiring Color Input/Output Terminal Description Condition Specified Condition
      A-11 (GND1) - Body ground - - Ground Always Below 1 Ω
      A-31 (BECU) - Body ground - Input Auxiliary battery power supply Power switch off 11 to 14 V
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