BLOCKING SYSTEM TERMINALS OF ECU


  1. CHECK TELEPHONE TRANSCEIVER ASSEMBLY

    A003W12E01

    1. Disconnect the H149 telephone transceiver 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
      H149-6 (IG2) - H149-9 (E) B - W-B Ignition power supply Power switch on (IG) 9 to 16 V
      H149-12 (+B) - H149-9 (E) LG - W-B +B power supply Power switch off 9 to 16 V
      H149-9 (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 H149 telephone transceiver assembly connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      H149-1 (BLK1) - H149-9 (E) G - W-B ID code box (immobiliser code ECU) communication input Power switch off 11 to 14 V
      H149-1 (BLK1) - H149-9 (E) G - W-B ID code box (immobiliser code ECU) communication input Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

      Pulse generation

      (See waveform 1)
      H149-2 (BLK4) - H149-9 (E) SB - W-B ID code box (immobiliser code ECU) communication output Power switch off Below 1 V
      H149-2 (BLK4) - H149-9 (E) SB - W-B ID code box (immobiliser code ECU) communication output Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

      Pulse generation

      (See waveform 2)
      H149-7 (BLK2) - H149-9 (E) L - W-B Power management control ECU communication output Power switch off Below 1 V
      H149-7 (BLK2) - H149-9 (E) L - W-B Power management control ECU communication output Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

      Pulse generation

      (See waveform 1)
      H149-8 (BLK3) - H149-9 (E) R - W-B Power management control ECU communication input Power switch off Below 1 V
      H149-8 (BLK3) - H149-9 (E) R - W-B Power management control ECU communication input Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

      Pulse generation

      (See waveform 2)

      • If the result is not as specified, the telephone transceiver assembly may have a malfunction.

    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)

        A003XI1E05
        Text in Illustration
        *a Approximately 160 ms *b Approximately 510 ms
        Measurement Condition
        Item Content
        Tester Connection

        • H149-1 (BLK1) - H149-9 (E)

        • H149-7 (BLK2) - H149-9 (E)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

      2. Waveform 2 (Reference)

        A003ZTPE04
        Text in Illustration
        *a Approximately 160 ms *b Approximately 510 ms
        Measurement Condition
        Item Content
        Tester Connection

        • H149-2 (BLK4) - H149-9 (E)

        • H149-8 (BLK3) - H149-9 (E)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

  2. CHECK ID CODE BOX (IMMOBILISER CODE ECU)


    1. Disconnect the H22 ID code box (immobiliser code ECU) connector.

      A003XYHE47

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      H22-1 (+B) - H22-8 (GND) L - W-B +B power supply Power switch off 11 to 14 V
      H22-8 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the H22 ID code box (immobiliser code ECU) connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      H22-5 (EFII) - H22-8 (GND) G - W-B Power management control ECU input signal Power switch off 11 to 14 V
      H22-5 (EFII) - H22-8 (GND) G - W-B Power management control ECU input signal Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after power switch first turned on (IG) after auxiliary battery disconnected and connected

      Pulse generation

      (See waveform 1)
      H22-6 (EFIO) - H22-8 (GND) SB - W-B Power management control ECU output signal Power switch off Below 1 V
      H22-6 (EFIO) - H22-8 (GND) SB - W-B Power management control ECU output signal Power switch on (IG)

      Pulse generation

      (See waveform 2)

      • If the result is not as specified, the ID code box (immobiliser code ECU) may have a malfunction.

    5. Inspect using an oscilloscope.


      1. Waveform 1 (Reference)

        A003XI1E05
        Text in Illustration
        *a Approximately 160 ms *b Approximately 510 ms
        Measurement Condition
        Item Content
        Tester Connection H22-5 (EFII) - H22-8 (GND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after power switch first turned on (IG) after auxiliary battery disconnected and connected

      2. Waveform 2 (Reference)

        A003ZTPE04
        Text in Illustration
        *a Approximately 160 ms *b Approximately 510 ms
        Measurement Condition
        Item Content
        Tester Connection H22-6 (EFIO) - H22-8 (GND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Power switch on (IG)

  3. CHECK POWER MANAGEMENT CONTROL ECU

    A003WH0E01

    Tech Tips

    The standard voltage between each pair of power management control ECU 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 or resistance for that pair of terminals, displayed in the "Specified Condition" column. The illustration above can be used as a reference to identify the power management control ECU terminal locations.

    Tester Connection Wiring Color Terminal Description Condition Specified Condition
    H3-6 (E1) - Body ground W-B - Body ground Ground Always Below 1 Ω
    H4-7 (AM21) - H3-6 (E1) W - W-B Constant power source Power switch off 11 to 14 V
    H3-1 (AM22) - H3-6 (E1) W - W-B Constant power source Power switch off 11 to 14 V
    A20-5 (+B1) - H3-6 (E1) L - W-B Power source Power switch on (IG) 11 to 14 V
    A19-2 (+B2) - H3-6 (E1) L - W-B Power source Power switch on (IG) 11 to 14 V
    H4-20 (IMO) - H3-6 (E1) L - W-B Certification ECU (smart key ECU assembly) communication input Power switch off Below 1 V
    H4-20 (IMO) - H3-6 (E1) L - W-B Certification ECU (smart key ECU assembly) communication input Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

    Pulse generation

    (See waveform 1)
    H4-21 (IMI) - H3-6 (E1) R - W-B Certification ECU (smart key ECU assembly) communication output Power switch off Below 1 V
    H4-21 (IMI) - H3-6 (E1) R - W-B Certification ECU (smart key ECU assembly) communication output Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

    Pulse generation

    (See waveform 2)

    1. 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)

        A003XI1E05
        Text in Illustration
        *a Approximately 160 ms *b Approximately 510 ms
        Measurement Condition
        Item Content
        Tester Connection H4-20 (IMO) - H3-6 (E1)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

      2. Waveform 2 (Reference)

        A003ZTPE04
        Text in Illustration
        *a Approximately 160 ms *b Approximately 510 ms
        Measurement Condition
        Item Content
        Tester Connection H4-21 (IMI) - H3-6 (E1)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected