Terminals Of Ecu [08/2020 - ]
WARNING: This page is about a different car, the 2022 Toyota Avalon and 2021 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
| *1 | Battery ECU assembly | - | - |
| Terminal No. (Symbols) |
Wiring Color | Input/Output | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|---|
| y15-1 (AM) - y15-27 (GND) | BR - W-G | IN | Constant power source | Always | 11 to 14 V |
| y15-27 (GND) - Body ground | W-G | Ground | Ground | Always | Below 1 Ω |
| y15-3 (GND1) - Body ground | GR | Ground | Ground | Always | Below 1 Ω |
| y15-4 (ERTH) - Body ground | LG | Ground | Ground | Always | Below 1 Ω |
| y15-18 (TB0) - y15-17 (GB0) | P - P | IN | Battery temperature sensor 0 | Power switch on (IG) HV battery temperature: -40 to 90°C (-40 to 194°F) |
4.75 (-40°C) to 0.46 V (90°C) |
| y15-31 (TB1) - y15-30 (GB1) | Y - Y | IN | Battery temperature sensor 1 | Power switch on (IG) HV battery temperature: -40 to 90°C (-40 to 194°F) |
4.75 (-40°C) to 0.46 V (90°C) |
| y15-7 (TB2) - y15-6 (GB2) | L - L | IN | Battery temperature sensor 2 | Power switch on (IG) HV battery temperature: -40 to 90°C (-40 to 194°F) |
4.75 (-40°C) to 0.46 V (90°C) |
| y15-20 (TB3) - y15-19 (GB3) | LG - B | IN | Battery temperature sensor 3 | Power switch on (IG) HV battery temperature: -40 to 90°C (-40 to 194°F) |
4.75 (-40°C) to 0.46 V (90°C) |
| y15-33 (TB4) - y15-32 (GB4) | GR - W-G | IN | Battery temperature sensor 4 | Power switch on (IG) HV battery temperature: -40 to 90°C (-40 to 194°F) |
4.75 (-40°C) to 0.46 V (90°C) |
| y15-9 (TB5) - y15-8 (GB5) | R - W | IN | Battery temperature sensor 5 | Power switch on (IG) HV battery temperature: -40 to 90°C (-40 to 194°F) |
4.75 (-40°C) to 0.46 V (90°C) |
| y15-22 (TC0) - y15-21 (GC0) | P-B - V | IN | Intake air temperature sensor | Power switch on (IG) HV battery intake air temperature: -40 to 90°C (-40 to 194°F) |
4.75 (-40°C) to 0.46 V (90°C) |
| y15-12 (IB0) - y15-23 (GIB) | BR- B-W | IN | Battery current sensor 0 | Power switch on (IG) | Approximately 2.8 V |
| y15-24 (IB1) - y15-23 (GIB) | L-W - B-W | IN | Battery current sensor 1 | Power switch on (IG) | Approximately 2.2 V |
| y15-36 (VIB) - y15-23 (GIB) | G - B-W | OUT | Power source for battery current sensor | Power switch on (IG) | 4.5 to 5.5 V |
| y15-13 (IGCT) - y15-27 (GND) | L-W - W-G | IN | Power source | Power switch on (IG) | 11 to 15.5 V |
| y15-14 (SI0) - y15-27 (GND) | P-B - W-G | OUT | HV battery cooling blower operation signal | Cooling fans operating | Pulse generation (Waveform 1) |
| Cooling fans not operating | 4.5 to 5.5 V | ||||
| y15-15 (FP0) - y15-27 (GND) | V - W-G | IN | HV battery cooling blower monitor signal | Cooling fans operating | Pulse generation (Waveform 2) |
| Cooling fans not operating | 0 Hz | ||||
| y15-25 (CA1H) - y15-27 (GND) | B - W-G | IN/OUT | CAN communication line | Power switch on (IG) | Pulse generation (Waveform 3) |
| y15-26 (CA1L) - y15-27 (GND) | LG - W-G | IN/OUT | CAN communication line | Power switch on (IG) | Pulse generation (Waveform 3) |
| y15-28 (CA2L) - y15-27 (GND) | W - W-G | IN/OUT | CAN communication line | Power switch on (IG) | Pulse generation (Waveform 4) |
| y15-29 (CA2H) - y15-27 (GND) | R - W-G | IN/OUT | CAN communication line | Power switch on (IG) | Pulse generation (Waveform 4) |
| y14-1 (GA0) - y14-13 (VA1) | V - P | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-13 (VA1) - y14-25 (VA2) | P - L | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-25 (VA2) - y14-2 (VA3) | L - W | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-2 (VA3) - y14-14 (VA4) | W - BR | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-14 (VA4) - y14-26 (VA5) | BR - W-G | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-26 (VA5) - y14-3 (VA6) | W-G - B | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-3 (VA6) - y14-15 (VA7) | B - P-B | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-15 (VA7) - y14-27 (VA8) | P-B - L-W | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-27 (VA8) - y14-4 (VA9) | L-W - LG | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-4 (VA9) - y14-16 (VA10) | LG - B-W | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-16 (VA10) - y14-28 (VA11) | B-W - Y | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-28 (VA11) - y14-5 (VA12) | Y - G | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-5 (VA12) - y14-17 (VA13) | G - GR | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-17 (VA13) - y14-29 (VA14) | GR - V | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-29 (VA14) - y14-6 (VA15) | V - R | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-6 (VA15) - y14-18 (VA16) | R - L | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-18 (VA16) - y14-30 (VA17) | L - P | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-30 (VA17) - y14-7 (VA18) | P - BR | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-7 (VA18) - y14-19 (VA19) | BR - W | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-19 (VA19) - y14-31 (VA20) | W - B | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-31 (VA20) - y14-8 (VA21) | B - W-G | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-8 (VA21) - y14-20 (VA22) | W-G - L-W | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-20 (VA22) - y14-32 (VA23) | L-W - P-B | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-32 (VA23) - y14-9 (VA24) | P-B - B-W | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-9 (VA24) - y14-21 (VA25) | B-W - LG | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-21 (VA25) - y14-33 (VA26) | LG - G | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-33 (VA26) - y14-10 (VA27) | G - Y | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-10 (VA27) - y14-22 (VA28) | Y - V | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-22 (VA28) - y14-34 (VA29) | V - GR | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-34 (VA29) - y14-11 (VA30) | GR - L | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-11 (VA30) - y14-23 (VA31) | L - R | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-23 (VA31) - y14-35 (VA32) | R - BR | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-35 (VA32) - y14-12 (VA33) | BR - P | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-12 (VA33) - y14-24 (VA34) | P - B | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y14-24 (VA34) - y14-36 (VA35) | B - W | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-1 (VAD) - y11-13 (VA36) | W - B | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-13 (VA36) - y11-25 (VA37) | B - P | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-25 (VA37) - y11-2 (VA38) | P - BR | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-2 (VA38) - y11-14 (VA39) | BR - R | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-14 (VA39) - y11-26 (VA40) | R - L | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-26 (VA40) - y11-3 (VA41) | L - GR | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-3 (VA41) - y11-15 (VA42) | GR - V | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-15 (VA42) - y11-27 (VA43) | V - Y | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-27 (VA43) - y11-4 (VA44) | Y - G | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-4 (VA44) - y11-16 (VA45) | G - LG | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-16 (VA45) - y11-28 (VA46) | LG - B-W | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-28 (VA46) - y11-5 (VA47) | B-W - P-B | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-5 (VA47) - y11-17 (VA48) | P-B - L-W | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-17 (VA48) - y11-29 (VA49) | L-W - W-G | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-29 (VA49) - y11-6 (VA50) | W-G - B | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-6 (VA50) - y11-18 (VA51) | B - W | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-18 (VA51) - y11-30 (VA52) | W - BR | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-30 (VA52) - y11-7 (VA53) | BR - P | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-7 (VA53) - y11-19 (VA54) | P - L | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-19 (VA54) - y11-31 (VA55) | L - R | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-31 (VA55) - y11-8 (VA56) | R - V | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-8 (VA56) - y11-20 (VA57) | V - GR | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-20 (VA57) - y11-32 (VA58) | GR - G | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-32 (VA58) - y11-9 (VA59) | G - Y | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-9 (VA59) - y11-21 (VA60) | Y - B-W | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-21 (VA60) - y11-33 (VA61) | B-W - LG | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-33 (VA61) - y11-10 (VA62) | LG - L-W | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-10 (VA62) - y11-22 (VA63) | L-W - P-B | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-22 (VA63) - y11-34 (VA64) | P-B - B | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-34 (VA64) - y11-11 (VA65) | B - W-G | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-11 (VA65) - y11-23 (VA66) | W-G - BR | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-23 (VA66) - y11-35 (VA67) | BR - W | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-35 (VA67) - y11-12 (VA68) | W - L | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-12 (VA68) - y11-24 (VA69) | L - P | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
| y11-24 (VA69) - y11-36 (VA70) | P - V | IN | Hybrid Battery Cell Voltage | Always | 1.9 to 4.1 V |
- Oscilloscope waveforms
HINT:
Oscilloscope waveform samples are provided here for informational purposes. Noise and fluttering waveforms have been omitted.
- Waveform 1 (HV battery cooling blower operation signal)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Item Content Terminal y15-14 (SI0) - y15-27 (GND) Equipment Setting 10 V/DIV., 1 ms/DIV. Condition Cooling fans operating HINT:
The wavelength will vary with the operating speed of the battery cooling blower assembly.
- Waveform 2 (HV battery cooling blower monitor signal)
Item Content Terminal y15-15 (FP0) - y15-27 (GND) Equipment Setting 2 V/DIV., 2 ms/DIV. Condition Battery cooling blower assembly operating (Active Test of cooling fan being performed) HINT:
The wavelength will vary with the operating speed of the battery cooling blower assembly.
- Waveform 3 (CAN communication line)
Item Content Terminal CH1: y15-25 (CA1H) - y15-27 (GND)
CH2: y15-26 (CA1L) - y15-27 (GND)Equipment Setting 1 V/DIV., 50 μs/DIV. Condition Power switch on (IG) HINT:
The waveform will vary depending on the content of the digital communication (digital signal).
- Waveform 4 (CAN communication line)
Item Content Terminal CH1: y15-29 (CA2H) - y15-27 (GND)
CH2: y15-28 (CA2L) - y15-27 (GND)Equipment Setting 1 V/DIV., 50 μs/DIV. Condition Power switch on (IG) HINT:
The waveform will vary depending on the content of the digital communication (digital signal).
- Waveform 1 (HV battery cooling blower operation signal)