SUB BATTERY SYSTEM TERMINALS OF ECM


  1. Figure 1. Sub-battery Module Assembly

    B000XW4C04
    *1 Sub-battery Module Assembly - -

    Terminal No.

    (Symbol)

    		 Wiring Color Input/Output Terminal Description Condition Specified Condition
    b7-1 (+BAT) - m1-1 (-BAT) B-W - B-DG IN/OUT Sub-battery voltage 5 seconds elapse after turning engine switch on (IG) 11 to 14 V
    b5-1 (RO) - m1-1 (-BAT) B - B-DG OUT Sub-battery condition signal Engine switch on (IG)

    Pulse generation

    (See waveform 1)
    b5-3 (CANH) - m1-1 (-BAT) GR - B-DG IN/OUT CAN communication line Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    b5-5 (BR) - m1-1 (-BAT) W - B-DG IN Back-up request signal Engine switch on (IG)

    Pulse generation

    (See waveform 3)
    b5-7 (B) - m1-1 (-BAT) R - B-DG IN Sub-battery ECU power supply Engine switch off 11 to 14 V
    b5-8 (BUR) - m1-1 (-BAT) V - B-DG OUT Backup relay control signal Engine switch on (IG)

    Pulse generation

    (See waveform 4)
    b5-10 (CANL) - m1-1 (-BAT) W - B-DG IN/OUT CAN communication line Engine switch on (IG)

    Pulse generation

    (See waveform 2)
    b5-11 (RD2) - m1-1 (-BAT) SB - B-DG IN Backup relay signal Engine switch on (IG)

    Pulse generation

    (See waveform 5)
    b5-12 (RD1) - m1-1 (-BAT) L - B-DG IN Backup relay signal Engine switch on (IG)

    Pulse generation

    (See waveform 6)
    b5-14 (IG) - m1-1 (-BAT) P - B-DG IN IG power supply Engine switch on (IG) 11 to 14 V

  2. Figure 2. Backup Relay

    B000WHUC02
    *1 Backup Relay - -

    Terminal No.

    (Symbol)

    		 Wiring Color Input/Output Terminal Description Condition Specified Condition
    5B-1 (BAT1) - 5D-8 (GND) B-W - W-B IN Battery voltage Engine switch off 11 to 14 V
    5A-1 (BAT2) - 5D-8 (GND) B-W - W-B IN Sub-battery voltage 5 seconds elapse after turning engine switch on (IG) 11 to 14 V
    5D-1 (RLY1) - 5D-8 (GND) V - W-B IN Backup relay control signal Engine switch on (IG)

    Pulse generation

    (See waveform 4)
    5D-6 (RD12) - 5D-8 (GND) SB - W-B OUT Backup relay condition signal Engine switch on (IG)

    Pulse generation

    (See waveform 5)
    5D-3 (RD11) - 5D-8 (GND) L - W-B OUT Backup relay condition signal Engine switch on (IG)

    Pulse generation

    (See waveform 6)

  3. Oscilloscope waveforms

    Tech Tips

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


    1. B000U6ON01

      Waveform 1

      Item Content
      Terminal b5-1 (RO) - m1-1 (-BAT)
      Equipment Setting 5 V/DIV, 10 ms/DIV
      Condition Engine switch on (IG)

      Tech Tips

      The duty ratio changes according to the vehicle condition.

    2. B000UMEN02

      Waveform 2

      Item Content
      Terminal

      CH1: b5-3 (CANH) - m1-1 (-BAT)

      CH2: b5-10 (CANL) - m1-1 (-BAT)
      Equipment Setting 1 V/DIV, 10 μs/DIV
      Condition Engine switch on (IG)
    3. B000U6ON01

      Waveform 3

      Item Content
      Terminal b5-5 (BR) - m1-1 (-BAT)
      Equipment Setting 5 V/DIV, 10 ms/DIV
      Condition Engine switch on (IG)

      Tech Tips

      The duty ratio changes according to the vehicle condition.

    4. B000XNFN01

      Waveform 4

      Item Content
      Terminal

      • b5-8 (BUR) - m1-1 (-BAT)

      • 5D-1 (RLY1) - 5D-8 (GND)
      Equipment Setting 5 V/DIV, 20 ms/DIV
      Condition Engine switch on (IG)

      Tech Tips

      The duty ratio changes according to the vehicle condition.

    5. B000Y5IN01

      Waveform 5

      Item Content
      Terminal

      • b5-11 (RD2) - m1-1 (-BAT)

      • 5D-6 (RD12) - 5D-8 (GND)
      Equipment Setting 5 V/DIV, 20 ms/DIV
      Condition Engine switch on (IG)

      Tech Tips

      The duty ratio changes according to the vehicle condition.

    6. B000XNFN01

      Waveform 6

      Item Content
      Terminal

      • b5-12 (RD1) - m1-1 (-BAT)

      • 5D-3 (RD11) - 5D-8 (GND)
      Equipment Setting 5 V/DIV, 20 ms/DIV
      Condition Engine switch on (IG)

      Tech Tips

      The duty ratio changes according to the vehicle condition.