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Home >> Toyota >> 2019 >> Highlander LE Plus, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 189 (Smart Key System (Entry Function) - Diagnostics - Introduction - (Hybrid)) >> SMART KEY SYSTEM (for Entry Function) >> Terminals Of Ecu [02/2014 - 11/2016] >> Terminals Of Ecu [02/2014 - 11/2016]
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Terminals Of Ecu [02/2014 - 11/2016]

WARNING: This page is about a different variant/trim than selected.
  1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
    GTY447351Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the F11 certification ECU (smart key ECU assembly) connector.
    2. Measure the voltage and resistance 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
      F11-1 (E) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      F11-10 (+B) - F11-1 (E) Input GR - W-B Power supply Power switch off 11 to 14 V -
    3. Reconnect the F11 certification ECU (smart key ECU assembly) connector.
    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
      F11-4 (CLG1) - F11-1 (E) Output SB - 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. 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)      		 Overhead + Driver Side (key diagnostic mode)
      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)
      F11-4 (CLG1) - F11-1 (E) Input SB - W-B Input to driver door lock sensor
      (front door outside handle assembly (for driver door) 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 not touched → touched
      		 Pulse generation
      (See waveform 8)      		 D-Door Trigger Switch
      F11-4 (CLG1) - F11-1 (E) Input SB - 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. 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 not touched → touched
      		 Pulse generation
      (See waveform 9)      		 D-Door Touch Sensor
      F11-3 (CG1B) - F11-1 (E) Output R - W-B 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 1)      		 Overhead + Driver Side (key diagnostic mode)
      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)
      F11-12 (CLG2) - F11-1 (E) Output P - W-B 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)      		 Overhead + Passenger Side (key diagnostic mode)
      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)
      F11-12 (CLG2) - F11-1 (E) Input P - W-B Input to front passenger door lock sensor
      (front door outside handle assembly (for front passenger door) 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 not touched → touched
      		 Pulse generation
      (See waveform 8)      		 P-Door Trigger Switch
      F11-12 (CLG2) - F11-1 (E) Input P - W-B 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 not touched → touched
      		 Pulse generation
      (See waveform 9)      		 P-Door Touch Sensor
      F11-11 (CG2B) - F11-1 (E) Output L - W-B 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 1)      		 Overhead + Passenger Side (key diagnostic mode)
      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)
      F11-8 (CLG5) - F11-1 (E) Output SB - W-B Output to No. 1 indoor electrical key antenna assembly (front floor) Procedure:
      1. Power 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 3)      		 Overhead + Front Room (key diagnostic mode)
      F11-7 (CG5B) - F11-1 (E) Output GR - 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. Power 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 3)      		 Overhead + Front Room (key diagnostic mode)
      F11-5 (TSW5) - F11-1 (E) Input R - W-B Back door opener switch assembly (open switch) signal input Back door opener switch assembly (open switch) off → on Pulse generation
      (See waveform 5)      		 Tr/B-Door Unlock SW
      F11-6 (TSW6) - F11-1 (E) Input L - W-B Back door opener switch assembly (lock switch) signal input Back door opener switch assembly (lock switch) off → on Pulse generation
      (See waveform 5)      		 Tr/B-Door Lock SW
      F9-10 (CLG6) - F11-1 (E) Output W - W-B Output to No. 2 indoor electrical key antenna assembly (rear floor) Procedure:
      1. Power 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 3)      		 Overhead + Rear Room (key diagnostic mode)
      F9-9 (CG6B) - F11-1 (E) Output B - W-B Output to No. 2 indoor electrical key antenna assembly (rear floor) (terminal on opposite side of component from CLG6 output terminal) Procedure:
      1. Power 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 3)      		 Overhead + Rear Room (key diagnostic mode)
      F9-8 (CLG7) - F11-1 (E) Output R - W-B Output to No. 3 indoor electrical key antenna assembly (inside luggage compartment) Procedure:
      1. Power 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 3)      		 Luggage + Back Door (inside) (key diagnostic mode)
      F9-7 (CG7B) - F11-1 (E) Output Y - W-B Output to No. 3 indoor electrical key antenna assembly (inside luggage compartment) (terminal on opposite side of component from CLG7 output terminal) Procedure:
      1. Power 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 3)      		 Luggage + Back Door (inside) (key diagnostic mode)
      F9-1 (RCO) - F11-1 (E) Output G - W-B Output to electrical key and tire pressure monitoring system receiver assembly
      (Power supply for electrical key and tire pressure monitoring system receiver assembly. 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 6)      		 -
      F9-2 (CSEL) - F11-1 (E) Output GR - W-B Communication channel switching circuit Procedure:
      1. Power switch off
      2. All doors closed
      		 Below 1 V → pulse generation -
      F9-3 (RDAM) - F11-1 (E) Input P - W-B Electrical key and tire pressure monitoring system receiver assembly verifies data received from electrical key transmitter sub-assembly.
      Electrical key and tire pressure monitoring system receiver assembly sends data from electrical key transmitter sub-assembly to certification ECU (smart key ECU assembly) (Electrical key and tire pressure monitoring system receiver assembly 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 7)      		 -
      F9-6 (CLG8) - F11-1 (E) Output BE - W-B 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 4)      		 Overhead + Back Door (key diagnostic mode)
      F9-5 (CG8B) - F11-1 (E) Output G - W-B 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 4)      		 Overhead + Back Door (key diagnostic mode)
      • *: For details about the entry function detection area, refer to OPERATION CHECK .
    5. Using an oscilloscope, check waveform 1.
      NOTE:

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

      GTY448796Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 1 (REFERENCE)

      Item Content
      Tester Connection F11-4 (CLG1) - F11-1 (E)
      F11-3 (CG1B) - F11-1 (E)
      F11-12 (CLG2) - F11-1 (E)
      F11-11 (CG2B) - F11-1 (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*)
      • *: For details about the entry function detection area, refer to OPERATION CHECK .
    6. Using an oscilloscope, check waveform 2.
      NOTE:

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

      GTY427636Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 2 (REFERENCE)

      Item Content
      Tester Connection F11-4 (CLG1) - F11-1 (E)
      F11-3 (CG1B) - F11-1 (E)
      F11-12 (CLG2) - F11-1 (E)
      F11-11 (CG2B) - F11-1 (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 outside detection area*)
      • *: For details about the entry function detection area, refer to OPERATION CHECK .
    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.

      GTY426276Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *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
      WAVEFORM 3 (REFERENCE)

      Item Content
      Tester Connection F11-8 (CLG5) - F11-1 (E)
      F11-7 (CG5B) - F11-1 (E)
      F9-10 (CLG6) - F11-1 (E)
      F9-9 (CG6B) - F11-1 (E)
      F9-8 (CLG7) - F11-1 (E)
      F9-7 (CG7B) - F11-1 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV.
      Condition Procedure:
      1. Power switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. Within 30 seconds of closing any door using the door outside handle
    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.

      GTY432845Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 4 (REFERENCE)

      Item Content
      Tester Connection F9-6 (CLG8) - F11-1 (E)
      F9-5 (CG8B) - F11-1 (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
    9. Using an oscilloscope, check waveform 5.
      NOTE:

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

      GTY379040Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Checking for switch on signal at short intervals
      WAVEFORM 5 (REFERENCE)

      Item Content
      Tester Connection F11-5 (TSW5) - F11-1 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV.
      Condition Back door opener switch assembly (open switch) off → on
      WAVEFORM 5 (REFERENCE)

      Item Content
      Tester Connection F11-6 (TSW6) - F11-1 (E)
      Tool Setting 2 V/DIV., 500 ms/DIV.
      Condition Back door opener switch assembly (lock switch) off → on
    10. Using an oscilloscope, check waveform 6.
      NOTE:

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

      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
      WAVEFORM 6 (REFERENCE)

      Item Content
      Tester Connection F9-1 (RCO) - F11-1 (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
    11. Using an oscilloscope, check waveform 7.
      NOTE:

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

      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
      WAVEFORM 7 (REFERENCE)

      Item Content
      Tester Connection F9-3 (RDAM) - F11-1 (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
    12. Using an oscilloscope, check waveform 8.
      NOTE:

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

      GTY430392Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Lock sensor not touched
      *b Lock sensor touched
      WAVEFORM 8 (REFERENCE)

      Item Content
      Tester Connection F11-4 (CLG1) - F11-1 (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 not touched → touched
      WAVEFORM 8 (REFERENCE)

      Item Content
      Tester Connection F11-12 (CLG2) - F11-1 (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 not touched → touched
      • *: For details about the entry function detection area, refer to OPERATION CHECK .
    13. Using an oscilloscope, check waveform 9.
      NOTE:

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

      GTY438196Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Unlock sensor not touched
      *b Unlock sensor touched
      WAVEFORM 9 (REFERENCE)

      Item Content
      Tester Connection F11-4 (CLG1) - F11-1 (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 locked
      4. Electrical key transmitter sub-assembly not near the vehicle
      5. Driver door unlock sensor not touched → touched
      WAVEFORM 9 (REFERENCE)

      Item Content
      Tester Connection F11-12 (CLG2) - F11-1 (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 locked
      4. Electrical key transmitter sub-assembly not near the vehicle
      5. Front passenger door unlock sensor not touched → touched
  2. CHECK POWER MANAGEMENT CONTROL ECU 
    GTY455621Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the F15 and F16 connectors.
    2. Measure the voltage and resistance according to the value (s) in the table below.
      Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      F16-10 (STP) - Body ground Input G - Body ground Stop light switch signal Brake pedal depressed → Brake pedal released 9 V or higher → Below 1 V Stop Light Switch1
      F16-7 (AM21) - F15-6 (E1) Input V - W-B Power source Power switch off 11 to 14 V -
      F15-1 (AM22) - F15-6 (E1) Input V - W-B Power source Power switch off 11 to 14 V -
      F16-12 (SLP) - F15-6 (E1) Input LG - W-B Steering lock position signal Steering locked 10 kΩ or higher Steering Unlock Switch
      F16-14 (P2) - F15-6 (E1) Input V - W-B P position signal Shift lever in P → Shift lever not in P 30 kΩ or higher → Below 200 Ω Shift P Signal
      F15-5 (E01) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      F16-5 (E02) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      F15-6 (E1) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      F16-4 (E12) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      F15-16 (SPDI) - Body ground Input BE - Body ground Vehicle speed signal Always 30 kΩ or higher Vehicle Speed Signal
    3. Reconnect the F15 and F16 power management control ECU connectors.
    4. Measure the voltage and check for pulses according to the value (s) in the table below.
      Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      F16-10 (STP) - F15-6 (E1) Input G - W-B Stop light switch signal Brake pedal depressed → Brake pedal released 9 V or higher → 1 V or less Stop Light Switch1
      F16-12 (SLP) - F15-6 (E1) Input LG - W-B Steering lock position signal Steering locked → Steering unlocked 11 to 14 V → 1.5 V or less Steering Unlock Switch
      F16-14 (P2) - F15-6 (E1) Input V - W-B LG - BR Shift lever in P → Shift lever not in P 9 V or higher → 2.76 V or less Shift P Signal
      F15-16 (SPDI) - F15-6 (E1) Input BE - W-B Vehicle speed signal Vehicle being driven at approx. 5 km/h (3 mph) Pulse generation
      (See waveform 1)      		 Vehicle Speed Signal
    5. Using an oscilloscope, check the signal waveform of the ECU.
      1. Waveform 1
        GTY436829Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Tester Connection F15-16 (SPDI) - F15-6 (E1)
        Tool Setting 5 V/DIV., 10 ms./DIV.
        Vehicle Condition Vehicle being driven at approx. 5 km/h (3 mph)

        HINT: 

        The wavelength becomes shorter as the vehicle speed increases.

  3. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 
    GTY436033Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *A Main Body ECU (Multiplex Network Body ECU) with 2 Connectors - -
    *1 Main Body ECU (Multiplex Network Body ECU) - -
    *a 2 Connectors - -
    GTY425671Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *A Main Body ECU (Multiplex Network Body ECU) with 3 Connectors - -
    *1 Main Body ECU (Multiplex Network Body ECU) - -
    *a 3 Connectors - -
    1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

      Refer to REMOVAL [02/2014 - 11/2016]

    2. Reconnect the instrument panel junction block assembly connectors.
    3. 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.

      Terminal No. (Symbol) 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 - Auxiliary battery power supply (for CPU) Power switch off 11 to 14 V -
      F19-6 (FLCY) - Body ground Input GR - Body ground Front door LH courtesy light switch input Front door LH closed → open 10 kΩ or higher → Below 1 Ω FL Door Courtesy SW
      F19-27 (FRCY) - Body ground Input L - Body ground Front door RH courtesy light switch input Front door RH closed → open 10 kΩ or higher → Below 1 Ω FR Door Courtesy SW
      MB-13 (LCTY) - Body ground Input - Rear door LH courtesy light switch input Rear door LH closed → open 10 kΩ or higher → Below 1 Ω RL Door Courtesy SW
      MB-2 (RCTY) - Body ground Input - Rear door RH courtesy light switch input Rear door RH closed → open 10 kΩ or higher → Below 1 Ω RR Door Courtesy SW
      MB-4 (BCTY) - Body ground Input - Back door courtesy light switch input Back door closed → open 10 kΩ or higher → Below 1 Ω Back Door Courtesy SW
      F18-27 (GCTY) - Body ground Input R - Body ground Glass hatch courtesy light switch input Back door glass closed → open 10 kΩ or higher → Below 1 Ω Glass Hatch Courtesy Switch
    4. Install the main body ECU (multiplex network body ECU) to the instrument panel junction block assembly.

      Refer to REMOVAL [02/2014 - 11/2016]

    5. 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
      4D-10 (LSFL) - Body ground Input GR - Body ground Front door LH unlock detection switch input Front door LH locked → unlocked Pulse generation
      (See waveform 1)      		 FL Door Lock Pos
      4D-26 (LSFR) - Body ground Input Y - Body ground Front door RH unlock detection switch input Front door RH locked → unlocked Pulse generation
      (See waveform 1)      		 FR Door Lock Pos
      4H-34 (LSWL) - Body ground Input V - Body ground Rear door LH unlock detection switch input Rear door LH locked → unlocked Pulse generation
      (See waveform 1)      		 RL-Door Lock Pos SW
      F18-2 (LSWR) - Body ground Input LG - Body ground Rear door RH unlock detection switch input Rear door RH locked → unlocked Pulse generation
      (See waveform 1)      		 RR-Door Lock Pos SW
      F19-6 (FLCY) - Body ground Input GR - Body ground Front door LH courtesy light switch input Front door LH closed → open Pulse generation
      (See waveform 2)      		 FL Door Courtesy SW
      F19-27 (FRCY) - Body ground Input L - Body ground Front door RH courtesy light switch input Front door RH closed → open Pulse generation
      (See waveform 2)      		 FR Door Courtesy SW
      4H-36 (LCTY) - Body ground Input SB - Body ground Rear door LH courtesy light switch input Rear door LH closed → open Pulse generation
      (See waveform 2)      		 RL Door Courtesy SW
      4D-30 (RCTY) - Body ground Input LG - Body ground Rear door RH courtesy light switch input Rear door RH closed → open Pulse generation
      (See waveform 2)      		 RR Door Courtesy SW
      4H-33 (BCTY) - Body ground Input LA-Y - Body ground Back door courtesy light switch input Back door closed → opened Pulse generation
      (See waveform 2)      		 Back Door Courtesy SW
      F18-27 (GCTY) - Body ground Input R - Body ground Glass hatch courtesy light switch input Back door glass closed → open Pulse generation
      (See waveform 2)      		 Glass Hatch Courtesy Switch
      4F-30 (BZR) - Body ground Output B - Body ground Wireless buzzer signal output Procedure:
      1. Power switch off
      2. All doors closed
      3. Lock switch of electrical key transmitter sub-assembly not pressed → pressed
      		 Below 1 V → pulse generation -
    6. Using an oscilloscope, check waveform 1.
      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 4D-10 (LSFL) - Body ground
      4D-26 (LSFR) - Body ground
      4H-34 (LSWL) - Body ground
      F18-2 (LSWR) - Body ground
      Tool Setting 2 V/DIV., 200 ms/DIV.
      Condition Door locked → unlocked
      GTY443250Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Door locked
      *b Door unlocked
    7. Using an oscilloscope, check waveform 2.
      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 F19-6 (FLCY) - Body ground
      F19-27 (FRCY) - Body ground
      4H-36 (LCTY) - Body ground
      4D-30 (RCTY) - Body ground
      4H-33 (BCTY) - Body ground
      F18-27 (GCTY) - Body ground
      Tool Setting 2 V/DIV., 200 ms/DIV.
      Condition Door closed → opened
      GTY443251Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Door closed
      *b Door open
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