SUB BATTERY SYSTEM TERMINALS OF ECM


  1. Figure 1. Sub-battery Module Assembly

    B004XMIC08
    *1 Sub-battery Module Assembly - -

    Terminal No.

    (Symbol)

    		 Wiring Color Input/Output Terminal Description Condition Specified Condition
    P13-1 (+BAT) - U2-1 (-BAT) B-W - B-Y IN/OUT Sub-battery voltage 5 seconds elapse after turning power switch on (IG) 11 to 14 V
    P6-1 (RO) - U2-1 (-BAT) B - B-Y OUT Sub-battery condition signal Power switch on (IG)

    Pulse generation

    (See waveform 1)
    P6-3 (CANH) - U2-1 (-BAT) LG - B-Y IN/OUT CAN communication line Power switch on (IG)

    Pulse generation

    (See waveform 2)
    P6-5 (BR) - U2-1 (-BAT) LG - B-Y IN Back-up request signal Power switch on (IG)

    Pulse generation

    (See waveform 3)
    P6-7 (B) - U2-1 (-BAT) R - B-Y IN Sub-battery ECU power supply Power switch off 11 to 14 V
    P6-8 (BUR) - U2-1 (-BAT) V - B-Y OUT Backup relay control signal Power switch on (IG)

    Pulse generation

    (See waveform 4)
    P6-10 (CANL) - U2-1 (-BAT) W - B-Y IN/OUT CAN communication line Power switch on (IG)

    Pulse generation

    (See waveform 2)
    P6-11 (RD2) - U2-1 (-BAT) SB - B-Y IN Backup relay signal Power switch on (IG)

    Pulse generation

    (See waveform 5)
    P6-12 (RD1) - U2-1 (-BAT) L - B-Y IN Backup relay signal Power switch on (IG)

    Pulse generation

    (See waveform 6)
    P6-14 (IG) - U2-1 (-BAT) P - B-Y IN IG power supply Power switch on (IG) 11 to 14 V

  2. Figure 2. Backup Relay

    B004TV7C04
    *1 Backup Relay - -

    Terminal No.

    (Symbol)

    		 Wiring Color Input/Output Terminal Description Condition Specified Condition
    6B-1 (B) - 6D-8 (GND) B-W - W-B IN Auxiliary battery voltage Power switch off 11 to 14 V
    6A-1 (BAT2) - 6D-8 (GND) B-W - W-B IN Sub-battery voltage 5 seconds elapse after turning power switch on (IG) 11 to 14 V
    6D-1 (RLY1) - 6D-8 (GND) V - W-B IN Backup relay control signal Power switch on (IG)

    Pulse generation

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

    Pulse generation

    (See waveform 5)
    6D-3 (RD11) - 6D-8 (GND) L - W-B OUT Backup relay condition signal Power 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. B004UMJN01

      Waveform 1

      Item Content
      Terminal P6-1 (RO) - U2-1 (-BAT)
      Equipment Setting 5 V/DIV, 10 ms/DIV
      Condition Power switch on (IG)

      Tech Tips

      The duty ratio changes according to the vehicle condition.

    2. B004TWYN02

      Waveform 2

      Item Content
      Terminal

      CH1: P6-3 (CANH) - U2-1 (-BAT)

      CH2: P6-10 (CANL) - U2-1 (-BAT)
      Equipment Setting 1 V/DIV, 10 μs/DIV
      Condition Power switch on (IG)
    3. B004UMJN01

      Waveform 3

      Item Content
      Terminal P6-5 (BR) - U2-1 (-BAT)
      Equipment Setting 5 V/DIV, 10 ms/DIV
      Condition Power switch on (IG)

      Tech Tips

      The duty ratio changes according to the vehicle condition.

    4. B004U2DN01

      Waveform 4

      Item Content
      Terminal

      • P6-8 (BUR) - U2-1 (-BAT)

      • 6D-1 (RLY1) - 6D-8 (GND)
      Equipment Setting 5 V/DIV, 20 ms/DIV
      Condition Power switch on (IG)

      Tech Tips

      The duty ratio changes according to the vehicle condition.

    5. B004VZ3N01

      Waveform 5

      Item Content
      Terminal

      • P6-11 (RD2) - U2-1 (-BAT)

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

      Tech Tips

      The duty ratio changes according to the vehicle condition.

    6. B004U2DN01

      Waveform 6

      Item Content
      Terminal

      • P6-12 (RD1) - U2-1 (-BAT)

      • 6D-3 (RD11) - 6D-8 (GND)
      Equipment Setting 5 V/DIV, 20 ms/DIV
      Condition Power switch on (IG)

      Tech Tips

      The duty ratio changes according to the vehicle condition.