HYBRID BATTERY SYSTEM TERMINALS OF ECU


  1. CHECK BATTERY SMART UNIT

    A000XHUE03

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

      Symbols

      (Terminal No.)

      		 Wiring Color Terminal Description Condition Standard Value (Reference Value)
      z87-1 (TC0) - z87-11 (GC0) G - G Intake air temperature sensor Intake air temperature: -40 to 90°C (-40 to 194°F) 4.8 (-40°C [-40°F]) to 1.0 V(90°C [194°F])
      z87-2 (TB5) - z87-12 (GB5) W - W HV battery temperature sensor 5 HV battery temperature: -40 to 90°C (-40 to 194°F) 4.8 (-40°C [-40°F]) to 1.0 V(90°C [194°F])
      z87-3 (TB4) - z87-13 (GB4) R - R HV battery temperature sensor 4 HV battery temperature: -40 to 90°C (-40 to 194°F) 4.8 (-40°C [-40°F]) to 1.0 V(90°C [194°F])
      z87-4 (TB3) - z87-14 (GB3) L - L HV battery temperature sensor 3 HV battery temperature: -40 to 90°C (-40 to 194°F) 4.8 (-40°C [-40°F]) to 1.0 V(90°C [194°F])
      z87-5 (TB2) - z87-15 (GB2) R - R HV battery temperature sensor 2 HV battery temperature: -40 to 90°C (-40 to 194°F) 4.8 (-40°C [-40°F]) to 1.0 V(90°C [194°F])
      z87-6 (TB1) - z87-16 (GB1) W - W HV battery temperature sensor 1 HV battery temperature: -40 to 90°C (-40 to 194°F) 4.8 (-40°C [-40°F]) to 1.0 V(90°C [194°F])
      z87-7 (TB0) - z87-17 (GB0) B - B HV battery temperature sensor 0 HV battery temperature: -40 to 90°C (-40 to 194°F) 4.8 (-40°C [-40°F]) to 1.0 V(90°C [194°F])
      z87-9 (IB) - z87-20 (GIB) W - B Battery current sensor Power switch on (READY) 0.5 to 4.5 V
      z87-10 (VIB) - z87-20 (GIB) R - B Power source for battery current sensor Power switch on (IG) 4.5 to 5.5 V
      z36-1 (IGCT) - z36-5 (GND) L - W-B Control signal Power switch on (READY) 11 to 15.5 V
      z36-2 (BTH+) - z36-5 (GND) R - W-B Serial communication Power switch on (IG)

      Pulse generation

      (Waveform 1)
      z36-3 (BTH-) - z36-5 (GND) G - W-B Serial communication Power switch on (IG)

      Pulse generation

      (Waveform 2)
      z36-4 (IDH) - z36-5 (GND) P - W-B Hybrid vehicle converter cooling fan signal Power switch on (IG)

      Pulse generation

      (Waveform 3)
      z36-7 (VM1) - z36-5 (GND) BR - W-B Battery cooling blower assembly (for lower side) monitor signal Battery cooling blower assembly (for lower side) not activated 0 V
      z36-7 (VM1) - z36-5 (GND) BR - W-B Battery cooling blower assembly (for lower side) monitor signal Battery cooling blower assembly (for lower side) activated 0 to 5 V
      z36-8 (VM0) - z36-5 (GND) LG - W-B Battery cooling blower assembly (for upper side) monitor signal Battery cooling blower assembly (for upper side) not activated 0 V
      z36-8 (VM0) - z36-5 (GND) LG - W-B Battery cooling blower assembly (for upper side) monitor signal Battery cooling blower assembly (for upper side) activated 0 to 5 V
      z36-5 (GND) - Body ground W-B - Body ground Ground Always (continuity check) Below 6 Ω

      If the result is not as specified, the battery smart unit may have a malfunction.

    2. Oscilloscope waveforms

      Tech Tips

      Oscilloscope waveform samples are provided here for informational purposes. Noise and fluttering waveforms have been omitted.


      1. A000TZIE01

        Waveform 1

        Item Contents
        Terminal z36-2 (BTH+) - z36-5 (GND)
        Equipment Setting 2 V/DIV, 500 μs/DIV
        Condition Power switch on (IG)

        Tech Tips

        The waveform will vary depending on the content of the digital communication (digital signal).

      2. A000UROE01

        Waveform 2

        Item Contents
        Terminal z36-3 (BTH-) - z36-5 (GND)
        Equipment Setting 2 V/DIV, 500 μs/DIV
        Condition Power switch on (IG)

        Tech Tips

        The waveform will vary depending on the content of the digital communication (digital signal).

      3. A000ZNYE01
        *1 Operating Condition 1
        *2 Operating Condition 6

        Waveform 3

        Item Contents
        Terminal z36-4 (IDH) - z36-5 (GND)
        Equipment Setting 2 V/DIV, 2 ms/DIV
        Condition Power switch on (IG)

        Tech Tips

        The frequency of the waveform differs according to operation conditions of the cooling fan of the hybrid vehicle converter.