ENTRY AND START SYSTEM(for Entry Function) TERMINALS OF ECU

  1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    B367011N07

    1. Disconnect the E49 and E50 certification ECU (smart key ECU assembly) connectors.

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

      Tip:

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

      Terminal No. (Symbol)

      Input/Output

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      Related Data List Item

      E49-10 (E) - Body ground

      -

      BR - Body ground

      Ground

      Always

      Below 1 Ω

      -

      E49-1 (+B) - E49-10 (E)

      Input

      B - BR

      +B power supply

      Always

      11 to 14 V

      -

      E50-33 (CUTB) - Body ground

      Input

      SB - Body ground

      Dark current cut pin*

      Always

      Below 1 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 installed 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.

    3. Reconnect the E49 and E50 certification ECU (smart key ECU assembly) connectors.

    4. Measure the voltage and check for pulses according to the value(s) in the table below.

      Terminal No. (Symbol)

      Input/Output

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      Related Data List Item

      E50-31 (CLG1) - E49-10 (E)

      Input/Output

      L - BR

      for LHD:

      • Output to No. 2 indoor electrical key antenna assembly (center pillar LH)

        (request signal (challenge) is sent to No. 2 indoor electrical key antenna assembly (center pillar LH) from certification ECU (smart key ECU assembly) to form detection area)

      for RHD:

      • Output to No. 2 indoor electrical key antenna assembly (center pillar RH)

        (request signal (challenge) is sent to No. 2 indoor electrical key antenna assembly (center pillar RH) from certification ECU (smart key ECU assembly) to form detection area)

      Procedure:

      1. Engine switch off

      2. All doors closed

      No pulse generation

      Overhead + Driver Side (key diagnostic mode)

      Procedure:

      1. Engine switch off

      2. All doors closed

      3. While carrying the electrical key transmitter sub-assembly, press the trigger switch on the front door outside handle assembly (for driver door)

      Pulse generation

      (See waveform 1)

      E50-30 (CG1B) - E49-10 (E)

      Input/Output

      P - BR

      for LHD:

      • Output to No. 2 indoor electrical key antenna assembly (center pillar LH) (terminal on opposite side of component from CLG1 output terminal)

      for RHD:

      • Output to No. 2 indoor electrical key antenna assembly (center pillar RH) (terminal on opposite side of component from CLG1 output terminal)

      Procedure:

      1. Engine switch off

      2. All doors closed

      No pulse generation

      Overhead + Driver Side (key diagnostic mode)

      Procedure:

      1. Engine switch off

      2. All doors closed

      3. While carrying the electrical key transmitter sub-assembly, press the trigger switch on the front door outside handle assembly (for driver door)

      Pulse generation

      (See waveform 1)

      E50-6 (CLG2) - E49-10 (E)

      Input/Output

      L - BR

      for LHD:

      • Output to No. 2 indoor electrical key antenna assembly (center pillar RH)

        (request signal (challenge) is sent to No. 2 indoor electrical key antenna assembly (center pillar RH) from certification ECU (smart key ECU assembly) to form detection area)

      for RHD:

      • Output to No. 2 indoor electrical key antenna assembly (center pillar LH)

        (request signal (challenge) is sent to No. 2 indoor electrical key antenna assembly (center pillar LH) from certification ECU (smart key ECU assembly) to form detection area)

      Procedure:

      1. Engine switch off

      2. All doors closed

      No pulse generation

      Overhead + Passenger Side (key diagnostic mode)

      Procedure:

      1. Engine switch off

      2. All doors closed

      3. While carrying the electrical key transmitter sub-assembly, press the trigger switch on the front door outside handle assembly (for front passenger door)

      Pulse generation

      (See waveform 2)

      E50-23 (CG2B) - E49-10 (E)

      Input/Output

      P - BR

      for LHD:

      • Output to No. 2 indoor electrical key antenna assembly (center pillar RH) (terminal on opposite side of component from CLG1 output terminal)

      for RHD:

      • Output to No. 2 indoor electrical key antenna assembly (center pillar LH) (terminal on opposite side of component from CLG1 output terminal)

      Procedure:

      1. Engine switch off

      2. All doors closed

      No pulse generation

      Overhead + Passenger Side (key diagnostic mode)

      Procedure:

      1. Engine switch off

      2. All doors closed

      3. While carrying the electrical key transmitter sub-assembly, press the trigger switch on the front door outside handle assembly (for front passenger door)

      Pulse generation

      (See waveform 2)

      E49-4 (TSW1) - E49-10 (E)

      Input

      LG - BR

      Driver door trigger switch signal input

      (Sends signal from trigger switch on front door outside handle assembly (for driver door) to certification ECU (smart key ECU assembly.) Certification ECU (smart key ECU assembly) sends 12 V pulse waveform every 20 ms. from terminal TSW. When trigger switch is pressed, pulse is grounded.)

      Procedure:

      1. Engine switch off

      2. All doors closed

      3. Driver door trigger switch not pressed → pressed

      9.5 to 16 V → Below 1.5 V

      D-Door Trigger Switch

      E49-12 (TSW2) - E49-10 (E)

      Input

      LG - BR

      Front passenger door trigger switch signal input

      (Sends signal from trigger switch on front door outside handle assembly (for front passenger door) to certification ECU (smart key ECU assembly.) Certification ECU (smart key ECU assembly) sends 12 V pulse waveform every 20 ms. from terminal TSW. When trigger switch is pressed, pulse is grounded.)

      Procedure:

      1. Engine switch off

      2. All doors closed

      3. Front passenger door trigger switch not pressed → pressed

      9.5 to 16 V → Below 1.5 V

      P-Door Trigger Switch

      E49-14 (TSW5) - E49-10 (E)

      Input

      G - BR

      Glass hatch opener switch assembly signal input

      Glass hatch opener switch assembly off → on

      4.5 V or higher → Below 1.5 V

      Tr/B-Door Unlock SW

      E49-23 (TSW6) - E49-10 (E)

      Input

      R - BR

      Glass hatch lock switch assembly signal input

      Glass hatch lock switch assembly off → on

      4.5 V or higher → Below 1.5 V

      Tr/B-Door Lock SW

      E50-8 (CLG8) - E49-10 (E)

      Input/Output

      BR - BR

      Output to No. 3 indoor electrical key antenna assembly (back door)

      Procedure:

      1. Engine switch off

      2. All doors closed

      3. Glass hatch opener switch assembly off → on

      Pulse generation

      (See waveform 3)

      Overhead + Back Door (key diagnostic mode)

      E50-24 (CG8B) - E49-10 (E)

      Input/Output

      V - BR

      Output to No. 3 indoor electrical key antenna assembly (back door) (terminal on opposite side of component from CLG8 output terminal)

      Procedure:

      1. Engine switch off

      2. All doors closed

      3. Glass hatch opener switch assembly off → on

      Pulse generation

      (See waveform 3)

      Overhead + Back Door (key diagnostic mode)

      E50-9 (CLG5) - E49-10 (E)

      Input/Output

      R - BR

      Output to No. 1 indoor electrical key antenna assembly (front floor)

      Procedure:

      1. Electrical key transmitter sub-assembly not inside vehicle

      2. Door is open → closed

      Pulse generation

      (See waveform 4)

      Overhead + Room2 (key diagnostic mode)

      E50-25 (CG5B) - E49-10 (E)

      Input/Output

      G - BR

      Output to Output to No. 1 indoor electrical key antenna assembly (front floor) (terminal on opposite side of component from CLG5 output terminal)

      Procedure:

      1. Electrical key transmitter sub-assembly not inside vehicle

      2. Door is open → closed

      Pulse generation

      (See waveform 4)

      Overhead + Room2 (key diagnostic mode)

      E50-27 (CG6B) - E49-10 (E)

      Input/Output

      W - BR

      Output to No. 1 indoor electrical key antenna assembly (rear floor)

      Procedure:

      1. Electrical key transmitter sub-assembly not inside vehicle

      2. Door is open → closed

      Pulse generation

      (See waveform 4)

      Overhead + Room (key diagnostic mode)

      E50-26 (CLG6) - E49-10 (E)

      Input/Output

      L - BR

      Output to No. 1 indoor electrical key antenna assembly (rear floor) (terminal on opposite side of component from CG6B output terminal)

      Procedure:

      1. Electrical key transmitter sub-assembly not inside vehicle

      2. Door is open → closed

      Pulse generation

      (See waveform 4)

      Overhead + Room (key diagnostic mode)

      E49-9 (LSWP) - E49-10 (E)

      Input

      LG - BR

      Except driver door unlock detection switch input

      Procedure:

      1. Engine switch off

      2. All doors closed

      3. All doors unlocked

      4. Lock button of electrical key transmitter sub-assembly not pressed

      Below 1 V

      -

      Procedure:

      1. Engine switch off

      2. All doors closed

      3. All doors unlocked

      4. Lock button of electrical key transmitter sub-assembly pressed

      8.5 V or higher

      -

      E50-13 (RDA3) - E49-10 (E)

      Output

      B - BR

      Signal output to body ECU

      Procedure:

      1. Engine switch off

      2. All doors closed

      3. 10 seconds elapsed after all doors locked

      4. Electrical key transmitter sub-assembly unlock switch not pressed

      11 to 14 V

      -

      Procedure:

      1. Engine switch off

      2. All doors closed

      3. 10 seconds elapsed after all doors locked

      4. Electrical key transmitter sub-assembly unlock switch pressed

      Pulse generation

      -

      E50-36 (PRG3) - E49-10 (E)

      Input

      L - BR

      Signal input from body ECU

      Procedure:

      1. Engine switch off

      2. All doors closed

      3. 10 seconds elapsed after all doors locked

      4. Electrical key transmitter sub-assembly unlock switch not pressed

      11 to 14 V

      -

      Procedure:

      1. Engine switch off

      2. All doors closed

      3. 10 seconds elapsed after all doors locked

      4. Electrical key transmitter sub-assembly unlock switch pressed

      Pulse generation

      -
    5. B265917C03

      *a

      Trigger switch ON

      Using an oscilloscope, check waveform 1.

      Tip:

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

      Table 1. Waveform 1 (Reference)

      Item

      Content

      Tester Connection

      E50-31 (CLG1) - E49-10 (E)

      E50-30 (CG1B) - E49-10 (E)

      Tool Setting

      2 V/DIV., 500 ms./DIV.

      Condition

      Procedure:

      1. Engine switch off

      2. All doors closed

      3. While carrying the electrical key transmitter sub-assembly, press the trigger switch on the front door outside handle assembly (for driver door)
    6. B265917C03

      *a

      Trigger switch ON

      Using an oscilloscope, check waveform 2.

      Tip:

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

      Table 2. Waveform 2 (Reference)

      Item

      Content

      Tester Connection

      E50-6 (CLG2) - E49-10 (E)

      E50-23 (CG2B) - E49-10 (E)

      Tool Setting

      2 V/DIV., 500 ms./DIV.

      Condition

      Procedure:

      1. Engine switch off

      2. All doors closed

      3. While carrying the electrical key transmitter sub-assembly, press the trigger switch on the front door outside handle assembly (for front passenger door)
    7. B265917C03

      *a

      Glass hatch opener switch assembly ON

      Using an oscilloscope, check waveform 3.

      Tip:

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

      Table 3. Waveform 3 (Reference)

      Item

      Content

      Tester Connection

      E50-8 (CLG8) - E49-10 (E)

      E50-24 (CG8B) - E49-10 (E)

      Tool Setting

      2 V/DIV., 500 ms./DIV.

      Condition

      Procedure:

      1. Engine switch off

      2. All doors closed

      3. Glass hatch opener switch assembly off → on
    8. B282012C17

      *a

      Door open

      *b

      Within approximately 30 seconds after the door is closed

      Using an oscilloscope, check waveform 4.

      Tip:

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

      Table 4. Waveform 4 (Reference)

      Item

      Content

      Tester Connection

      E50-9 (CLG5) - E49-10 (E)

      E50-25 (CG5B) - E49-10 (E)

      E50-27 (CG6B) - E49-10 (E)

      E50-26 (CLG6) - E49-10 (E)

      Tool Setting

      2 V/DIV., 500 ms./DIV.

      Condition

      Procedure:

      1. Electrical key transmitter sub-assembly not inside vehicle

      2. Door is open → closed

  2. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND BODY ECU

    B361594C01

    *1

    Driver Side Junction Block Assembly

    -

    -
    B343148C21

    *1

    Body ECU

    -

    -

    1. Remove the body ECU from the driver side junction block assembly.

      Click here

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

      Tip:

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

      Terminal No. (Symbol)

      Input/Output

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      Related Data List Item

      MB-1 (GND1) - Body ground

      -

      -

      Ground

      Always

      Below 1 Ω

      -

      MB-6 (BECU) - Body ground

      Input

      -

      Battery power supply (for CPU)

      Always

      11 to 14 V

      -

      MB-7 (IG) - Body ground

      Input

      -

      Engine switch power supply

      Engine switch on (IG)

      11 to 14 V

      -

    3. Install the body ECU to the driver side junction block assembly.

      Click here

    4. Measure the voltage and check for pulses according to the value(s) in the table below.

      Terminal No. (Symbol)

      Input/Output

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      Related Data List Item

      3L-2 (DCTY) - Body ground

      Input

      L - Body ground*1

      P - Body ground*2

      Driver door courtesy light switch input

      Driver door closed → open

      Pulse generation

      (See waveform 1)

      -

      3L-8 (PCTY) - Body ground

      Input

      P - Body ground*1

      L - Body ground*2

      Front passenger door courtesy light switch input

      Front passenger door closed → open

      Pulse generation

      (See waveform 1)

      -

      3L-6 (PCTY) - Body ground

      Input

      L- Body ground

      Except front door courtesy light switch input

      Except front door closed → open

      Pulse generation

      (See waveform 1)

      -

      E46-15 (LSWD) - Body ground

      Input

      BE - Body ground

      Driver door lock detection switch input

      Driver door locked → unlocked

      Pulse generation

      (See waveform 2)

      -

      3J-4 (ACT+) - Body ground

      Output

      R - Body ground

      Door lock motor lock drive output

      Driver door control switch not pushed and driver door key cylinder in neutral position

      Below 1 V

      -

      Lock side of driver door control switch pushed or driver door key cylinder turned to lock position

      11 to 14 V

      3M-1 (TR+) - Body ground

      Output

      B - Body ground

      Back door lock motor unlock drive output

      Back door closed

      Below 1 V

      -

      Back door door open

      11 to 14 V

      -

      3J-3 (ACT-) - Body ground

      Output

      G - Body ground

      Door lock motor unlock drive output

      Driver door control switch not pushed and driver door key cylinder in neutral position

      Below 1 V

      -

      Unlock side of driver door control switch pushed or driver door key cylinder turned to unlock position

      11 to 14 V

      E46-16 (RDA) - Body ground

      Input

      B - Body ground

      Signal input from certification ECU (smart key ECU assembly)

      Engine switch off, all doors closed, 10 seconds elapsed after all doors locked and electrical key transmitter sub-assembly unlock switch not pressed

      11 to 14 V

      -

      Engine switch off, all doors closed, 10 seconds elapsed after all doors locked and electrical key transmitter sub-assembly unlock switch pressed

      Pulse generation

      -

      E46-9 (PRG) - Body ground

      Output

      L - Body ground

      Signal output to certification ECU (smart key ECU assembly)

      Engine switch off, all doors closed, 10 seconds elapsed after all doors locked and electrical key transmitter sub-assembly unlock switch not pressed

      11 to 14 V

      -

      Engine switch off, all doors closed, 10 seconds elapsed after all doors locked and electrical key transmitter sub-assembly unlock switch pressed

      Pulse generation

      -

      E46-6 (HAZ) - Body ground

      Output

      G - Body ground

      Hazard warning light signal output

      Answer-back off (hazard warning light)

      11 to 14 V

      -

      Answer-back on (hazard warning light)

      Below 1 V

      -

      • *1: for RHD

      • *2: for LHD

    5. B341707C03

      *a

      Door closed

      *b

      Door open

      Using an oscilloscope, check waveform 1.

      Tip:

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

      • The oscilloscope waveform shown in the illustration is status that disconnected the combination meter connector.

      Table 5. Waveform 1 (Reference)

      Item

      Content

      Tester Connection

      3L-2 (DCTY) - Body ground

      Tool Setting

      2 V/DIV., 200 ms./DIV.

      Condition

      Driver door closed → open
      Table 6. waveform 1 (Reference)

      Item

      Content

      Tester Connection

      3L-8 (PCTY) - Body ground

      Tool Setting

      2 V/DIV., 200 ms./DIV.

      Condition

      Front passenger door closed → Front passenger door open
      Table 7. waveform 1 (Reference)

      Item

      Content

      Tester Connection

      3L-6 (PCTY) - Body ground

      Tool Setting

      2 V/DIV., 200 ms./DIV.

      Condition

      Except front door closed → Except front door open
    6. B341707C03

      *a

      Door locked

      *b

      Door unlocked

      Using an oscilloscope, check waveform 2.

      Tip:

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

      Table 8. waveform 2 (Reference)

      Item

      Content

      Tester Connection

      E46-15 (LSWD) - Body ground

      Tool Setting

      2 V/DIV., 200 ms./DIV.

      Condition

      Driver door locked → unlocked