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Terminals Of Ecu [12/2021 - ]

WARNING: This page is about a different variant/trim than selected.
  1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
    GTY896936Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the G54 and M7 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 Wiring Color Input/Output Terminal Description Condition Specified Condition Related Data List Item
      M7-25 (STP1) - Body ground V - Body ground Input Stop light switch signal Brake pedal depressed → Brake pedal released 9 V or higher → 1 V or less Power Source Control
      1. Stop Light Switch1
      G54-4 (+B) - G54-18 (E) P - W-B Input Power source Power switch off 11 to 14 V -
      G54-15 (CUTB) - Body ground V - Body ground Input Dark current cut pin* Power switch off 11 to 14 V -
      G54-18 (E) - Body ground W-B - Body ground - Ground Always Below 1 Ω -
      G54-21 (SSW2) - Body ground L - Body ground Input SSW2 contact signal
      HINT: 
      Backup for SSW1. Behaves the same way as SSW1.      		 Power switch pushed → Power switch not pushed Below 15 Ω → 10 kΩ or higher Power Source Control
      1. Start Switch2
      G54-23 (SSW1) - Body ground GR - Body ground Input SSW1 contact signal Power switch pushed → Power switch not pushed Below 15 Ω → 10 kΩ or higher Power Source Control
      1. Start Switch1
      G54-19 (SPD) - Body ground R - Body ground Input Vehicle speed signal Always 30 kΩ or higher Power Source Control
      1. Vehicle Speed Signal
      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 and M7 certification ECU (smart key ECU assembly) connectors.
    4. Measure the voltage and resistance 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
      M7-25 (STP1) - G54-18 (E) V - W-B Input Stop light switch signal Brake pedal released → Brake pedal depressed 1 V or less → 9 V or higher Power Source Control
      1. Stop Light Switch1
      G54-14 (SLP) - G54-18 (E) G - W-B - Ground Always Below 1 Ω -
      G54-13 (LIN) - G54-18 (E) LG - W-B Input/Output LIN communication line Power switch on (IG) Pulse generation -
      G54-22 (P) - G54-18 (E) R - W-B Input P position signal Shift state park (P) → Shift state not park (P) 9 V or higher → 2.76 V or less Power Source Control
      1. Shift P Signal
      G54-21 (SSW2) - G54-18 (E) L - W-B Input SSW2 contact signal
      HINT: 
      Backup for SSW1. Behaves the same way as SSW1.      		 Power switch not pushed → Power switch pushed 9 V or higher → 1 V or less Power Source Control
      1. Start Switch2
      G54-23 (SSW1) - G54-18 (E) GR - W-B Input SSW1 contact signal Power switch not pushed → Power switch pushed 9 V or higher → 1 V or less Power Source Control
      1. Start Switch1
      G54-27 (ST2) - G54-18 (E) L - W-B Output Starter request signal With the brake pedal depressed, the power switch is pressed and held → After approximately 3 seconds has elapsed, the power switch is released 8.5 V or higher → 1 V or less -
      G54-16 (ACCD) - G54-18 (E) G- W-B Output ACC signal Power switch off → Power switch on (ACC) 1 V or less → 8.5 V or higher Power Source Control
      1. ACC Relay Monitor
      G54-17 (IG1D) - G54-18 (E) L - W-B Output IG1 signal Power switch on (ACC) → Power switch on (IG) 1 V or less → 9 V or higher Power Source Control
      1. IG Relay Monitor (Outside)
      G54-19 (SPD) - G54-18 (E) R - W-B Input Vehicle speed signal Vehicle being driven at approximately 5 km/h (3 mph) Pulse generation
      (See waveform 1)      		 Power Source Control
      1. Vehicle Speed Signal
      G54-8 (CLG5) - G54-18 (E) B - W-B Output 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
      		 Pulse generation
      (See waveform 2)      		 -
      G54-9 (CG5B) - G54-18 (E) LG - W-B Output 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
      		 Pulse generation
      (See waveform 2)      		 -
      M7-5 (CLG6) - G54-18 (E) B - W-B Output Output to No. 1 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
      		 Pulse generation
      (See waveform 2)      		 -
      M7-6 (CG6B) - G54-18 (E) R - W-B Output Output to No. 1 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
      		 Pulse generation
      (See waveform 2)      		 -
      M7-11 (CLG7) - G54-18 (E) R - W-B Output Output to No. 1 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
      		 Pulse generation
      (See waveform 2)      		 -
      M7-10 (CG7B) - G54-18 (E) G - W-B Output Output to No. 1 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
      		 Pulse generation
      (See waveform 2)      		 -
      G54-5 (TXCT) - G54-11 (AGND) GR - BE Output Signal output to transponder key amplifier Power switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V Smart Key
      • BCC Malfunction
      • Abnormal Status
      • Different Encrypt Code
      • Different Serial Number
      • Frame Error
      • Response
      G54-6 (CODE) - G54-11 (AGND) B - BE Input Signal input from transponder key amplifier Power switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V
      G54-7 (VC5) - G54-11 (AGND) BE - BE Output Transponder key amplifier power supply Power switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V
      G54-11 (AGND) - Body ground BE - Body ground - Transponder key amplifier ground Always Below 1 Ω
      G54-5 (TXCT) - G54-11 (AGND) GR - BE Output Signal output to transponder key amplifier
      (Code sent from certification ECU (smart key ECU assembly) to transponder key amplifier built into power switch, and then transmitted by transponder key amplifier antenna as radio waves)      		 Power switch off, key not in cabin, within 30 seconds after power switch pressed Pulse generation
      (See waveform 3)      		 Smart Key
      • BCC Malfunction
      • Abnormal Status
      • Different Encrypt Code
      • Different Serial Number
      • Frame Error
      • Response

      HINT: 
      If immobiliser key code verification communication is not performed correctly, the malfunction may be indicated by one or more of the Data List items listed above
      G54-6 (CODE) - G54-11 (AGND) B - BE Input Signal input from transponder key amplifier
      (Radio waves from transponder key amplifier built into power switch used to detect key information. Key information then sent to certification ECU (smart key ECU assembly))      		 Power switch off, power switch pressed with key held near power switch
      HINT: 
      Remove the transmitter battery before performing this inspection.      		 Pulse generation
      (See waveform 4)
      G54-7 (VC5) - G54-11 (AGND) BE - BE Output Transponder key amplifier power supply
      (Power supplied from certification ECU (smart key ECU assembly) when transponder key amplifier built into power switch activated)      		 Power switch off, key not in cabin, within 30 seconds after power switch pressed Pulse generation
      (See waveform 5)
      G54-20 (IND) - G54-18 (E) W - W-B Output Security indicator output Power switch off → on (IG) Pulse generation → Below 2 V -
    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
        Fig 1: Waveform 1
        GTY453239Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Item Content
        Tester Connection G54-19 (SPD) - G54-18(E)
        Tool Setting 5 V/DIV., 20 ms./DIV.
        Condition Vehicle being driven at approximately 5 km/h (3 mph)

        HINT: 

        The wavelength becomes shorter as the vehicle speed increases.

      2. Waveform 2
        Fig 2: Waveform 2
        GTY426276Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a For 30 seconds after any door closed
        *b After 30 seconds or more have elapsed since any door closed
        Item Content
        Tester Connection G54-8 (CLG5) - G54-18 (E)
        G54-9 (CG5B) - G54-18 (E)
        M7-5 (CLG6) - G54-18 (E)
        M7-6 (CG6B) - G54-18 (E)
        M7-11 (CLG7) - G54-18 (E)
        M7-10 (CG7B) - G54-18 (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
      3. Waveform 3
        Fig 3: Waveform 3
        GTY429542Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Item Content
        Tester Connection G54-5 (TXCT) - G54-11 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Power switch off, key not in cabin, within 30 seconds after power switch pressed
      4. Waveform 4
        Item Content
        Tester Connection G54-6 (CODE) - G54-11 (AGND)
        Tool Setting
        • Waveform:

          2 V/DIV., 20 ms./DIV.

        • Waveform (detail):

          2 V/DIV., 100 μs./DIV.
        Condition Power switch off, power switch pressed with key held near power switch
        HINT: 
        Remove the transmitter battery before performing this inspection.
        Fig 4: Waveform 4
        GTY510289Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Waveform
        *b Waveform (detail)
      5. Waveform 5
        Fig 5: Waveform 5
        GTY426469Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Item Content
        Tester Connection G54-7 (VC5) - G54-11 (AGND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Power switch off, key not in cabin, within 30 seconds after power switch pressed
  2. CHECK ID CODE BOX (IMMOBILISER CODE ECU) 
    Fig 6: Identifying G57 ID Code Box (Immobiliser Code ECU) Connector Terminal Identification
    GTY870843Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the G57 ID code box (immobiliser code ECU) connector.
    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 Wiring Color Input/Output Terminal Description Condition Specified Condition Related Data List Item
      G57-1 (+B) - Body ground LA-GR - Body ground Input Power source Power switch off 11 to 14 V -
      G57-5 (GND) - Body ground LA - Body ground - Ground Always Below 1 Ω
    3. Reconnect the G57 ID code box (immobiliser code ECU) 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
      G57-3 (EFII) - G57-5 (GND) LG - LA Input EFI communication input
      (Signal input from hybrid vehicle control ECU assembly to ID code box (immobiliser code ECU))      		 Power switch off 11 to 14 V Smart Key
      • EFI Code Receive
      • Hybrid Control System Start Request
      G57-3 (EFII) - G57-5 (GND) LG - LA Input EFI communication input
      (Signal input from hybrid vehicle control ECU assembly to ID code box (immobiliser code ECU))      		 Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after cable disconnected and reconnected to auxiliary battery Pulse generation
      (See waveform 1)
      G57-4 (EFIO) - G57-5 (GND) L - LA Output EFI communication output
      (Signal output from ID code box (immobiliser code ECU) to hybrid vehicle control ECU assembly)      		 Power switch off Below 1 V
      G57-4 (EFIO) - G57-5 (GND) L - LA Output EFI communication output
      (Signal output from ID code box (immobiliser code ECU) to hybrid vehicle control ECU assembly)      		 Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after cable disconnected and reconnected to auxiliary battery Pulse generation
      (See waveform 2)
      G57-2 (LIN1) - G57-5 (GND) GR - LA Input/Output LIN communication line Power switch on (IG) Pulse generation -
    5. Using an oscilloscope, check the waveform of the ECU.
      NOTE:

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

      1. Waveform 1
        Fig 7: Waveform 1
        GTY367336Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Approximately 160 ms *b Approximately 270 ms
        Item Content
        Tester Connection G57-3 (EFII) - G57-5 (GND)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after cable disconnected and reconnected to auxiliary battery
      2. Waveform 2
        Fig 8: Waveform 2
        GTY384373Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Approximately 160 ms *b Approximately 270 ms
        Item Content
        Tester Connection G57-4 (EFIO) - G57-5 (GND)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after cable disconnected and reconnected to auxiliary battery
  3. CHECK HYBRID VEHICLE CONTROL ECU ASSEMBLY 
    GTY932886Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage and resistance 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
      A31-35 (IG2) - A30-3 (E1) B - W-B Input Power source Power switch on (IG) 11 to 14 V -
      A30-3 (E1) - Body ground W-B - Body ground - Ground Always Below 1 Ω -
      A30-23 (IMO) - A30-3 (E1) LA-LG - W-B Output EFI communication output
      (Signal input from hybrid vehicle control ECU assembly to ID code box (immobiliser code ECU))      		 Power switch off 11 to 14 V Smart Key
      • EFI Code Receive
      • Engine Start Request
      A30-23 (IMO) - A30-3 (E1) LA-LG - W-B Output EFI communication output
      (Signal input from hybrid vehicle control ECU assembly to ID code box (immobiliser code ECU))      		 Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after cable disconnected and reconnected to auxiliary battery Pulse generation
      (See waveform 1)
      A30-10 (IMI) - A30-3 (E1) LA-L - W-B Input EFI communication input
      (Signal output from ID code box (immobiliser code ECU) to hybrid vehicle control ECU assembly)      		 Power switch off Below 1 V
      A30-10 (IMI) - A30-3 (E1) LA-L - W-B Input EFI communication input
      (Signal output from ID code box (immobiliser code ECU) to hybrid vehicle control ECU assembly)      		 Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after cable disconnected and reconnected to auxiliary battery Pulse generation
      (See waveform 2)
      A30-4 (ST2) - A30-3 (E1) L - W-B Output Starter request signal With the brake pedal depressed, the power switch is pressed and held → After approximately 3 seconds has elapsed, the power switch is released 8.5 V or higher → 1 V or less -
    2. Using an oscilloscope, check the waveform of the ECU.
      NOTE:

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

      1. Waveform 1
        Fig 9: Waveform 1
        GTY367336Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Approximately 160 ms *b Approximately 270 ms
        Item Content
        Tester Connection A30-23 (IMO) - A30-3 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after cable disconnected and reconnected to auxiliary battery
      2. Waveform 2
        Fig 10: Waveform 2
        GTY384373Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Approximately 160 ms *b Approximately 270 ms
        Item Content
        Tester Connection A30-10 (IMI) - A30-3 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after cable disconnected and reconnected to auxiliary battery
  4. CHECK POWER SWITCH 
    GTY944931Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage and resistance 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
      G55-6 (AGND) - Body ground BE - Body ground - Transponder key amplifier ground Always Below 1 Ω -
      G55-7 (TXCT) - G55-6 (AGND) GR - BE Input Immobiliser communication input Power switch off, brake pedal not depressed, 30 seconds or more after driver door opened and then closed Below 1 V -
      G55-7 (TXCT) - G55-6 (AGND) GR - BE Input Signal input from certification ECU (smart key ECU assembly)
      (Code sent from certification ECU (smart key ECU assembly) to transponder key amplifier built into power switch, and then transmitted by transponder key amplifier antenna as radio waves)      		 Power switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds after power switch pressed Pulse generation
      (See waveform 1)      		 Smart Key
      • BCC Malfunction
      • Abnormal Status
      • Different Encrypt Code
      • Different Serial Number
      • Frame Error
      • Response

      HINT: 
      If immobiliser key code verification communication is not performed correctly, the malfunction may be indicated by one or more of the Data List items listed above
      G55-8 (CODE) - G55-6 (AGND) B - BE Output Immobiliser communication output Power switch off, brake pedal not depressed, 30 seconds or more after driver door opened and then closed Below 1 V -
      G55-8 (CODE) - G55-6 (AGND) B - BE Output Signal output to certification ECU (smart key ECU assembly)
      (Radio waves from transponder key amplifier built into power switch used to detect key information. Key information then sent to certification ECU (smart key ECU assembly))      		 Power switch off, power switch pressed with electrical key transmitter sub-assembly held near power switch
      HINT: 
      Remove the transmitter battery before performing this inspection.      		 Pulse generation
      (See waveform 2)      		 Smart Key
      • BCC Malfunction
      • Abnormal Status
      • Different Encrypt Code
      • Different Serial Number
      • Frame Error
      • Response

      HINT: 
      If immobiliser key code verification communication is not performed correctly, the malfunction may be indicated by one or more of the Data List items listed above
      G55-10 (VC5) - G55-6 (AGND) BE - BE Input Transponder key amplifier power supply Power switch off, brake pedal not depressed, 30 seconds or more after driver door opened and then closed Below 1 V -
      G55-10 (VC5) - G55-6 (AGND) BE - BE Input Transponder key amplifier power supply
      (Power supplied from certification ECU (smart key ECU assembly) when transponder key amplifier built into power switch activated)      		 Power switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds after power switch pressed Pulse generation
      (See waveform 3)      		 Smart Key
      • BCC Malfunction
      • Abnormal Status
      • Different Encrypt Code
      • Different Serial Number
      • Frame Error
      • Response

      HINT: 
      If immobiliser key code verification communication is not performed correctly, the malfunction may be indicated by one or more of the Data List items listed above
      G55-1 (SS2) - G55-6 (AGND) L - BE Input SSW2 contact signal
      HINT: 
      Backup for SSW1. Behaves the same way as SSW1.      		 Power switch not pushed → Power switch pushed 9 V or higher → 1 V or less Power Source Control
      1. Start Switch2
      G55-5 (SS1) - G55-6 (AGND) GR - BE Input SSW1 contact signal Power switch not pushed → Power switch pushed 9 V or higher → 1 V or less Power Source Control
      1. Start Switch1
    2. Using an oscilloscope, check the waveform.
      NOTE:

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

      1. Waveform 1
        Fig 11: Waveform 1 (Reference)
        GTY429541Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Item Content
        Tester Connection G55-7 (TXCT) - G55-6 (AGND)
        Tool Setting 2 V/DIV., 20 ms./DIV.
        Condition Power switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds after power switch pressed
      2. Waveform 2
        Fig 12: Waveform 2 (Reference)
        GTY510289Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Waveform
        *b Waveform (detail)
        Item Content
        Tester Connection G55-8 (CODE) - G55-6 (AGND)
        Tool Setting Procedure:
        • Waveform

          2 V/DIV., 20 ms./DIV.

        • Waveform (detail)

          2 V/DIV., 100 μs./DIV.
        Condition Power switch off, power switch pressed with electrical key transmitter sub-assembly held near power switch
        HINT: 
        Remove the transmitter battery before performing this inspection.
      3. Waveform 3
        Fig 13: Waveform 3 (Reference)
        GTY426468Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Item Content
        Tester Connection G55-10 (VC5) - G55-6 (AGND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Power switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds after power switch pressed
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