HYBRID BATTERY SYSTEM TERMINALS OF ECU

A276420C21

*1

Battery Voltage Sensor

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Terminal No.

(Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

z12-1 (TC0) - z12-11 (GC0)

G - G

Intake air temperature sensor

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))

z12-2 (TB5) - z12-12 (GB5)

P - P

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))

z12-3 (TB4) - z12-13 (GB4)

GR - GR

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))

z12-4 (TB3) - z12-14 (GB3)

SB - SB

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))

z12-5 (TB2) - z12-15 (GB2)

L - L

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))

z12-6 (TB1) - z12-16 (GB1)

W - W

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))

z12-7 (TB0) - z12-17 (GB0)

R - R

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))

z12-9 (IB) - z12-20 (GIB)

Y - B

Current sensor

Power switch on (READY)

0.5 to 4.5 V

z12-10 (VIB) - z12-20 (GIB)

BR - B

Power source for battery current sensor

Power switch on (IG)

4.5 to 5.5 V

y2-1 (IGCT) - y2-5 (GND)

L - W-B

Control signal

Power switch on (READY)

11 to 14 V

y2-2 (BTH+) - y2-5 (GND)

R - W-B

Serial communication

Power switch on (IG)

Pulse generation

(waveform 1)

y2-3 (BTH-) - y2-5 (GND)

G - W-B

Serial communication

Power switch on (IG)

Pulse generation

(waveform 2)

y2-8 (FP0) - y2-5 (GND)

LG - W-B

Battery cooling blower No. 1 monitor signal

Cooling blower stopped

4.5 to 5.5 V

Cooling blower activated

Pulse generation

(waveform 3)

y2-7 (FP1) - y2-5 (GND)

BR - W-B

Battery cooling blower No. 2 monitor signal

Cooling blower stopped

4.5 to 5.5 V

Cooling blower activated

Pulse generation

(waveform 4)

y2-5 (GND) - Body ground

W-B

Ground

Always (continuity check)

Below 1 Ω

  1. Oscilloscope waveforms

    Tip:

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

    1. A284561N02

      Waveform 1

      Item

      Content

      Terminal

      y2-2 (BTH+) - y2-5 (GND)

      Equipment Setting

      2 V/DIV., 500 μs/DIV.

      Condition

      Power switch on (IG)
      Tip:

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

    2. A284562N02

      Waveform 2

      Item

      Content

      Terminal

      y2-3 (BTH-) - y2-5 (GND)

      Equipment Setting

      2 V/DIV., 500 μs/DIV.

      Condition

      Power switch on (IG)
      Tip:

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

    3. A366609N03

      Waveform 3

      Item

      Content

      Terminal

      y2-8 (FP0) - y2-5 (GND)

      Equipment Setting

      5 V/DIV., 1 ms/DIV.

      Condition

      Battery cooling blower assembly (No. 0) operating (Active Test of cooling fan being performed)
      Tip:

      The frequency of the waveform will vary with the operating speed of the battery cooling blower assembly (No. 0).

    4. A366609N03

      Waveform 4

      Item

      Content

      Terminal

      y2-7 (FP0) - y2-5 (GND)

      Equipment Setting

      5 V/DIV., 1 ms/DIV.

      Condition

      Battery cooling blower assembly (No. 1) operating (Active Test of cooling fan being performed)
      Tip:

      The frequency of the waveform will vary with the operating speed of the battery cooling blower assembly (No. 1).