BLOCKING SYSTEM TERMINALS OF ECU


  1. CHECK TELEPHONE TRANSCEIVER ASSEMBLY


    1. A01CYEIE21

      Disconnect the G58 telephone transceiver assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G58-6 (IG2) - G58-9 (E) SB - W-B Ignition power supply Ignition switch off Below 1 V
      G58-6 (IG2) - G58-9 (E) SB - W-B Ignition power supply Ignition switch ON 9 to 16 V
      G58-12 (+B) - G58-9 (E) BR - W-B +B power supply Always 9 to 16 V
      G58-9 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the G58 telephone transceiver assembly connector.

    4. Measure the voltage according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G58-1 (BLK1) - G58-9 (E) LG - W-B Certification ECU (smart key ECU assembly)*1 or transponder key ECU assembly*2 communication input Ignition switch off 11 to 14 V
      G58-1 (BLK1) - G58-9 (E) LG - W-B Certification ECU (smart key ECU assembly)*1 or transponder key ECU assembly*2 communication input Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal

      Pulse generation

      (See waveform 1)
      G58-2 (BLK4) - G58-9 (E) P - W-B Certification ECU (smart key ECU assembly)*1 or transponder key ECU assembly*2 communication input Ignition switch off Below 1 V
      G58-2 (BLK4) - G58-9 (E) P - W-B Certification ECU (smart key ECU assembly)*1 or transponder key ECU assembly*2 communication input Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal

      Pulse generation

      (See waveform 2)
      G58-7 (BLK2) - G58-9 (E) LG - W-B ECM communication output Ignition switch off Below 1 V
      G58-7 (BLK2) - G58-9 (E) LG - W-B ECM communication output Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal

      Pulse generation

      (See waveform 1)
      G58-8 (BLK3) - G58-9 (E) P - W-B ECM communication input Ignition switch off Below 1 V
      G58-8 (BLK3) - G58-9 (E) P - W-B ECM communication input Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal

      Pulse generation

      (See waveform 2)

      *1: w/ Entry and Start System

      *2: w/o Entry and Start System

    5. Inspect using an oscilloscope.

      Note

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


      1. Waveform 1 (Reference)

        A01CYBSC04
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection

        • G58-1 (BLK1) - G58-9 (E)

        • G58-7 (BLK2) - G58-9 (E)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal

      2. Waveform 2 (Reference)

        A01CWYOC04
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection

        • G58-2 (BLK4) - G58-9 (E)

        • G58-8 (BLK3) - G58-9 (E)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal

  2. CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (w/ Entry and Start System)


    1. Disconnect the G82 certification ECU (smart key ECU assembly) connector.

      A01CX68N73

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G82-11 (E) - Body ground BR - Body ground Ground Always Below 1 Ω
      G82-2 (+B) - G82-11 (E) W - BR +B power supply Always 11 to 14 V

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

    3. Reconnect the G82 certification ECU (smart key ECU assembly) connector.

    4. Measure the waveform and voltage according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G82-14 (EFII) - G82-11 (E) LG - BR ECM input signal Engine switch off 11 to 14 V
      G82-14 (EFII) - G82-11 (E) LG - BR ECM input signal Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

      Pulse generation

      (See waveform 1)
      G82-13 (EFIO) - G82-11 (E) P - BR ECM output signal Engine switch off Below 1 V
      G82-13 (EFIO) - G82-11 (E) P - BR ECM output signal Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

      Pulse generation

      (See waveform 2)

    5. Inspect using an oscilloscope.


      1. Waveform 1 (Reference)

        A01CYBSC04
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection G82-14 (EFII) - G82-11 (E)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

      2. Waveform 2 (Reference)

        A01CWYOC04
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection G82-13 (EFIO) - G82-11 (E)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

  3. CHECK TRANSPONDER KEY ECU ASSEMBLY (w/o Entry and Start System)

    A01CXTHN04

    1. Disconnect the G88 transponder key ECU assembly connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      G88-1 (+B) - G88-5 (GND) BE - BR +B power supply Always 11 to 14 V
      G88-2 (IG) - G88-5 (GND) LG - BR Ignition power supply Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      G88-5 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the G88 transponder 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 Terminal Description Condition Specified Condition
      G88-12 (EFII) - G88-5 (GND) LG - BR ECM input signal Ignition switch off 11 to 14 V
      G88-12 (EFII) - G88-5 (GND) LG - BR ECM input signal Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal.

      Pulse generation

      (See waveform 1)
      G88-13 (EFIO) - G88-5 (GND) P - BR ECM output signal Ignition switch off Below 1 V
      G88-13 (EFIO) - G88-5 (GND) P - BR ECM output signal Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal.

      Pulse generation

      (See waveform 2)

    5. Using an oscilloscope, check the waveform.


      1. Waveform 1 (Reference)

        A01CYBSC02
        *a Approximately 160 ms *b Approximately 270 ms
        Tester Connection G88-12 (EFII) - G88-5 (GND)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal.

      2. Waveform 2 (Reference)

        A01CWYOC01
        *a Approximately 160 ms *b Approximately 270 ms
        Tester Connection G88-13 (EFIO) - G88-5 (GND)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal.

  4. CHECK ECM (3ZR-FE)

    A01CYAUN12

    Tech Tips

    The standard voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard voltage for that pair of terminals, displayed in the "Specified Condition" column. The illustration above can be used as a reference to identify the ECM terminal locations.


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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      B75-16 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
      B75-51 (E01) - Body ground W-B - Body ground Ground Always Below 1 Ω
      B75-21 (E02) - Body ground W-B - Body ground Ground Always Below 1 Ω
      B75-52 (E04) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A62-50 (EC) - Body ground W-B - Body ground Ground Always Below 1 Ω
      B75-59 (ME01) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A62-1 (BATT) - B75-16 (E1) W - BR Battery (for measuring battery voltage and for ECM memory) Always 9 to 14 V
      A62-2 (+B) - B75-16 (E1) R - BR Power source of ECM Ignition switch off Below 1 V
      Ignition switch ON 9 to 14 V
      A62-3 (+B2) - B75-16 (E1) P - BR Power source of ECM Ignition switch off Below 1 V
      Ignition switch ON 9 to 14 V
      A62-28 (IMI) - B75-16 (E1) P - BR Certification ECU (smart key ECU assembly)*1 or transponder key ECU assembly*2 input signal Ignition switch off Below 1 V
      A62-28 (IMI) - B75-16 (E1) P - BR Certification ECU (smart key ECU assembly)*1 or transponder key ECU assembly*2 input signal Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 1)
      A62-29 (IMO) - B75-16 (E1) LG - BR Certification ECU (smart key ECU assembly)*1 or transponder key ECU assembly*2 output signal Ignition switch off Below 1 V
      A62-29 (IMO) - B75-16 (E1) LG - BR Certification ECU (smart key ECU assembly)*1 or transponder key ECU assembly*2 output signal Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 2)

      *1: w/ Entry and Start System

      *2: w/o Entry and Start System

    2. Inspect using an oscilloscope.

      Note

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


      1. Waveform 1 (Reference)

        A01CYBSC04
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A62-29 (IMO) - B75-16 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal

      2. Waveform 2 (Reference)

        A01CWYOC04
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A62-28 (IMI) - B75-16 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal

  5. CHECK ECM (2AR-FE)

    A01CYAUN13

    Tech Tips

    The standard voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard voltage for that pair of terminals, displayed in the "Specified Condition" column. The illustration above can be used as a reference to identify the ECM terminal locations.


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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      B77-16 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
      B77-50 (E01) - Body ground W-B - Body ground Ground Always Below 1 Ω
      B77-49 (E02) - Body ground W-B - Body ground Ground Always Below 1 Ω
      B77-53 (E04) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A62-14 (EC) - Body ground W-B - Body ground Ground Always Below 1 Ω
      B77-58 (ME01) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A62-1 (BATT) - B77-16 (E1) W - BR Battery (for measuring battery voltage and for ECM memory) Always 9 to 14 V
      A62-2 (+B) - B77-16 (E1) R - BR Power source of ECM Ignition switch off Below 1 V
      Ignition switch ON 9 to 14 V
      A62-3 (+B2) - B77-16 (E1) P - BR Power source of ECM Ignition switch off Below 1 V
      Ignition switch ON 9 to 14 V
      A62-28 (IMI) - B77-16 (E1) P - BR Certification ECU (smart key ECU assembly)*1 or transponder key ECU assembly*2 input signal Ignition switch off Below 1 V
      A62-28 (IMI) - B77-16 (E1) P - BR Certification ECU (smart key ECU assembly)*1 or transponder key ECU assembly*2 input signal Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 1)
      A62-29 (IMO) - B77-16 (E1) LG - BR Certification ECU (smart key ECU assembly)*1 or transponder key ECU assembly*2 output signal Ignition switch off Below 1 V
      A62-29 (IMO) - B77-16 (E1) LG - BR Certification ECU (smart key ECU assembly)*1 or transponder key ECU assembly*2 output signal Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal Pulse generation (See waveform 2)

      *1: w/ Entry and Start System

      *2: w/o Entry and Start System

    2. Inspect using an oscilloscope.

      Note

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


      1. Waveform 1 (Reference)

        A01CYBSC04
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A62-29 (IMO) - B77-16 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal

      2. Waveform 2 (Reference)

        A01CWYOC04
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection A62-28 (IMI) - B77-16 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal