| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM100000001GCRA |
| Model Year Start: 2020 | Model: Corolla | Prod Date Range: [01/2019 - 09/2022] |
| Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): TERMINALS OF ECU; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022] | ||
TERMINALS OF ECU
HYBRID VEHICLE CONTROL ECU
|
Terminal No. (Symbol) |
Wiring Color |
Input/Output |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|---|
|
A57-2 (R) - I3-3 (E1) |
L - W-B |
IN |
Shift lever position signal |
Power switch on (IG), shift lever in R |
7.5 to 14 V |
|
Power switch on (IG), shift lever not in R |
0 to 1.5 V |
||||
|
A57-3 (DB1) - I3-3 (E1) |
W - W-B |
IN |
Shift lever position signal |
Power switch on (IG), shift lever in D or B |
7.5 to 14 V |
|
Power switch on (IG), shift lever not in D or B |
0 to 1.5 V |
||||
|
A57-4 (HMCH) - I3-3 (E1) |
B - W-B |
IN/OUT |
Communication signal |
Power switch on (IG) |
Pulse generation (Waveform 1) |
|
A57-5 (MREL) - I3-3 (E1) |
BE - W-B |
OUT |
Main relay |
Power switch on (IG) |
11 to 14 V |
|
A57-6 (HSDN) - I3-3 (E1) |
B - W-B |
OUT |
MG ECU shutdown signal |
Power switch on (READY) |
0 to 1.5 V |
|
A57-7 (STP) - I3-3 (E1) |
SB - W-B |
IN |
Stop light switch |
Brake pedal depressed |
11 to 14 V |
|
Brake pedal released |
0 to 1.5 V |
||||
|
A57-8 (LIN3) - I3-3 (E1) |
W - W-B |
IN/OUT |
LIN communication signal (A/C inverter, auxiliary battery state sensor) |
Power switch on (READY) |
Pulse generation |
|
A57-11 (+B1) - I3-3 (E1) |
L - W-B |
IN |
Power source |
Power switch on (IG) |
11 to 14 V |
|
A57-13 (DRN5) - Body ground |
L - Body ground |
- |
Shield ground |
Always |
Below 1 Ω |
|
A57-14 (HMCL) - I3-3 (E1) |
W - W-B |
IN/OUT |
Communication signal |
Power switch on (IG) |
Pulse generation (Waveform 1) |
|
A57-15 (DB2) - I3-3 (E1) |
G - W-B |
IN |
Shift lever position signal |
Power switch on (IG), shift lever in D or B |
7.5 to 14 V |
|
Power switch on (IG), shift lever not in D or B |
0 to 1.5 V |
||||
|
A57-16 (PR) - I3-3 (E1) |
V - W-B |
IN |
Shift lever position signal |
Power switch on (IG), shift lever in P or R |
7.5 to 14 V |
|
Power switch on (IG), shift lever not in P or R |
0 to 1.5 V |
||||
|
A57-18 (PSFT) - I3-3 (E1) |
R - W-B |
OUT |
Shift lever position sensor power source |
Power switch on (ACC) |
7.5 to 14 V |
|
A57-20 (BL) - I3-3 (E1) |
LG - W-B |
OUT |
Back-up light relay |
Power switch on (IG), shift lever in R |
11 to 14 V |
|
A57-24 (VCPA) - A57-37 (EPA) |
Y - L |
OUT |
Accelerator pedal sensor assembly power source (for VPA) |
Power switch on (IG) |
4.5 to 5.5 V |
|
A57-26 (VCP2) - A57-25 (EPA2) |
G - W |
OUT |
Accelerator pedal sensor assembly power source (for VPA2) |
Power switch on (IG) |
4.5 to 5.5 V |
|
A57-28 (P) - I3-3 (E1) |
Y - W-B |
IN |
Shift lever position signal |
Power switch on (IG), shift lever in P |
7.5 to 14 V |
|
Power switch on (IG), shift lever not in P |
0 to 1.5 V |
||||
|
A57-29 (N) - I3-3 (E1) |
SB - W-B |
IN |
Shift lever position signal |
Power switch on (IG), shift lever in N |
7.5 to 14 V |
|
Power switch on (IG), shift lever not in N |
0 to 1.5 V |
||||
|
A57-30 (PNB) - I3-3 (E1) |
P - W-B |
IN |
Shift lever position signal |
Power switch on (IG), shift lever in P or N |
7.5 to 14 V |
|
A57-33 (NIWP) - I3-3 (E1) |
SB - W-B |
IN |
Inverter water pump assembly signal |
Power switch on (READY) |
Pulse generation (Waveform 2) |
|
A57-34 (IWP) - I3-3 (E1) |
G - W-B |
OUT |
Inverter water pump assembly signal |
Power switch on (READY) |
Pulse generation (Waveform 2) |
|
A57-36 (VPA) - A57-37 (EPA) |
R - L |
IN |
Accelerator pedal sensor assembly (for accelerator pedal position detection) |
Power switch on (IG), accelerator pedal released |
0.4 to 1.4 V |
|
Power switch on (IG), engine stopped, shift position P, accelerator pedal fully depressed |
2.6 to 4.5 V |
||||
|
A57-38 (VPA2) - A57-25 (EPA2) |
B - W |
IN |
Accelerator pedal sensor assembly (for accelerator pedal sensor malfunction detection) |
Power switch on (IG), accelerator pedal released |
1.0 to 2.2 V |
|
Power switch on (IG), engine stopped, shift position P, accelerator pedal fully depressed |
3.4 to 5.3 V |
||||
|
A57-40 (TTA) - A57-39 (ETTA) |
P - R |
IN |
Transmission fluid temperature sensor |
Power switch on (IG), temperature 25°C (77°F) |
3.6 to 4.6 V |
|
Power switch on (IG), temperature 60°C (140°F) |
2.2 to 3.2 V |
||||
|
A57-46 (MMT) - A57-45 (MMTG) |
L - BR |
IN |
Motor temperature sensor |
Power switch on (IG), temperature 25°C (77°F) |
3.6 to 4.6 V |
|
Power switch on (IG), temperature 60°C (140°F) |
2.2 to 3.2 V |
||||
|
A57-48 (GMT) - A57-47 (GMTG) |
B - R |
IN |
Generator temperature sensor |
Power switch on (IG), temperature 25°C (77°F) |
3.6 to 4.6 V |
|
Power switch on (IG), temperature 60°C (140°F) |
2.2 to 3.2 V |
||||
|
I2-5 (ILK) - I3-3 (E1) |
V - W-B |
IN |
Interlock switch |
Power switch on (IG), service plug grip installed correctly |
0 to 1.5 V |
|
Power switch on (IG), service plug grip not installed |
11 to 14 V |
||||
|
I2-7 (CA3P) - I3-3 (E1) |
R - W-B |
IN/OUT |
CAN communication signal |
Power switch on (IG) |
Pulse generation (Waveform 3) |
|
I2-8 (CA1L) - I3-3 (E1) |
W - W-B |
IN/OUT |
CAN communication signal |
Power switch on (IG) |
Pulse generation (Waveform 4) |
|
I2-11 (E02) - Body ground |
W-B - Body ground |
- |
Ground |
Always |
Below 1 Ω |
|
I2-12 (E01) - Body ground |
W-B - Body ground |
- |
Ground |
Always |
Below 1 Ω |
|
I2-13 (SMRG) - I2-12 (E01) |
Y - W-B |
OUT |
System main relay operation signal |
Power switch on (IG)→Power switch on (READY) |
Pulse generation (Waveform 5) |
|
I2-15 (SMRP) - I2-12 (E01) |
W - W-B |
OUT |
System main relay operation signal |
Power switch on (IG)→Power switch on (READY) |
Pulse generation (Waveform 5) |
|
I2-16 (SMRB) - I2-12 (E01) |
SB - W-B |
OUT |
System main relay operation signal |
Power switch on (IG)→Power switch on (READY) |
Pulse generation (Waveform 5) |
|
I2-20 (CA3N) - I3-3 (E1) |
W - W-B |
IN/OUT |
CAN communication signal |
Power switch on (IG) |
Pulse generation (Waveform 3) |
|
I2-21 (CA1H) - I3-3 (E1) |
L - W-B |
IN/OUT |
CAN communication signal |
Power switch on (IG) |
Pulse generation (Waveform 4) |
|
I2-25 (PLKC) - I3-3 (E1) |
B - W-B |
OUT |
Shift lock release request signal |
Power switch on (READY), brake pedal depressed |
11 to 14 V |
|
Power switch on (READY), brake pedal released |
0 to 1.5 V |
||||
|
I2-28 (ST1-) - I3-3 (E1) |
LA-R - W-B |
IN |
Stop light switch signal |
Power switch on (IG), brake pedal depressed |
0 to 1.5 V |
|
Power switch on (IG), brake pedal released |
11 to 14 V |
||||
|
I2-29 (ACCI) - I3-3 (E1) |
B - W-B |
IN |
ACC relay |
Power switch on (ACC) |
11 to 14 V |
|
I2-34 (E12) - Body ground |
W-B - Body ground |
- |
Ground |
Always |
Below 1 Ω |
|
I2-35 (IG2) - I3-3 (E1) |
LG - W-B |
IN |
Power source |
Power switch on (IG) |
11 to 14 V |
|
I2-38 (SI0) - I3-3 (E1) |
Y - W-B |
OUT |
Battery cooling blower operation signal |
Battery cooling blower operating |
Pulse generation (Waveform 6) |
|
Battery cooling blower not operating |
4.5 to 5.5 V |
||||
|
I2-41 (BTH+) - I3-3 (E1) |
R - W-B |
IN |
Communication signal from battery voltage sensor to hybrid vehicle control ECU |
Power switch on (IG) |
Pulse generation (Waveform 7) |
|
I2-42 (BTH-) - I3-3 (E1) |
G - W-B |
IN |
Communication signal from battery voltage sensor to hybrid vehicle control ECU |
Power switch on (IG) |
Pulse generation (Waveform 7) |
|
I3-1 (+B2) - I3-3 (E1) |
L - W-B |
IN |
Power source |
Power switch on (IG) |
11 to 14 V |
|
I3-3 (E1) - Body ground |
W-B - Body ground |
- |
Ground |
Always |
Below 1 Ω |
|
I3-4 (ST2) - I3-3 (E1) |
V - W-B |
IN |
Starter signal |
Power switch on (IG) |
0 to 1.5 V |
|
I3-7 (INDR) - I3-3 (E1) |
LA-R - W-B |
IN |
Shift position indicator signal |
Power switch on (IG), shift lever in R |
0 to 3.2 V |
|
Power switch on (IG), shift lever not in R |
11 to 14 V |
||||
|
I3-8 (INDD) - I3-3 (E1) |
LA-W - W-B |
IN |
Shift position indicator signal |
Power switch on (IG), shift lever in D |
0 to 3.2 V |
|
Power switch on (IG), shift lever not in D |
11 to 14 V |
||||
|
I3-19 (INDP) - I3-3 (E1) |
LA-GR - W-B |
IN |
Shift position indicator signal |
Power switch on (IG), shift lever in P |
0 to 3.2 V |
|
Power switch on (IG), shift lever not in P |
11 to 14 V |
||||
|
I3-20 (INDB) - I3-3 (E1) |
LA-V - W-B |
IN |
Shift position indicator signal |
Power switch on (IG), shift lever in B |
0 to 3.2 V |
|
Power switch on (IG), shift lever not in B |
11 to 14 V |
||||
|
I3-21 (INDN) - I3-3 (E1) |
LA-SB - W-B |
IN |
Shift position indicator signal |
Power switch on (IG), shift lever in N |
0 to 3.2 V |
|
Power switch on (IG), shift lever not in N |
11 to 14 V |
||||
|
I3-27 (BATT) - I3-3 (E1) |
V - W-B |
IN |
Constant power source |
Always |
10 to 14 V |
|
I3-29 (ABFS) - I3-3 (E1) |
B - W-B |
IN |
Airbag activation signal |
Power switch on (READY) |
Pulse generation (Waveform 8) |
|
I3-33 (EVSW) - I3-3 (E1) |
SB - W-B |
IN |
EV drive mode switch (combination switch assembly) signal |
Power switch on (IG), EV drive mode switch not pushed |
11 to 14 V |
|
Power switch on (IG), EV drive mode switch pushed and held |
0 to 1.5 V |
||||
|
I3-37 (PDRV) - I3-3 (E1) |
R - W-B |
IN |
Drive mode select switch (combination switch assembly) signal |
Power switch on (IG), drive mode select switch not pushed |
11 to 14 V |
|
Power switch on (IG), drive mode select switch pushed and held |
0 to 1.5 V |
||||
|
I3-44 (IGB) - I3-3 (E1) |
Y - W-B |
IN |
Power source |
Power switch on (IG) |
11 to 14 V |
(a) Oscilloscope waveforms
HINT:
Oscilloscope waveform samples are provided here for informational purposes. Noise and fluttering waveforms have been omitted.
(1) Waveform 1 (Communication signal)
|
Item |
Content |
|---|---|
|
Terminal |
CH1: A57-4 (HMCH) - I3-3 (E1) CH2: A57-14 (HMCL) - I3-3 (E1) |
|
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).
(2) Waveform 2 (Inverter water pump assembly signal)
|
Item |
Content |
|---|---|
|
Terminal |
CH1: A57-34 (IWP) - I3-3 (E1) CH2: A57-33 (NIWP) - I3-3 (E1) |
|
Equipment Setting |
5 V/DIV., 20 ms./DIV. |
|
Condition |
Power switch on (READY) |
HINT:
The duty of the IWP signal and the frequency of the NIWP signal change according to the coolant (for inverter) temperature.
(3) Waveform 3 (CAN communication signal)
|
Item |
Content |
|---|---|
|
Terminal |
CH1: I2-7 (CA3P) - I3-3 (E1) CH2: I2-20 (CA3N) - I3-3 (E1) |
|
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).
(4) Waveform 4 (CAN communication signal)
|
Item |
Content |
|---|---|
|
Terminal |
CH1: I2-21 (CA1H) - I3-3 (E1) CH2: I2-8 (CA1L) - I3-3 (E1) |
|
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).
(5) Waveform 5 (System main relay operation signal)
|
Item |
Content |
|---|---|
|
Terminal |
CH1: I2-15 (SMRP) - I2-12 (E01) CH2: I2-16 (SMRB) - I2-12 (E01) CH3: I2-13 (SMRG) - I2-12 (E01) |
|
Equipment Setting |
10 V/DIV., 200 ms./DIV. |
|
Condition |
Power switch on (IG) → Power switch on (READY) |
(6) Waveform 6 (HV battery blower fan operation signal)
|
Item |
Content |
|---|---|
|
Terminal |
I2-38 (SI0) - I3-3 (E1) |
|
Equipment Setting |
10 V/DIV., 1 ms./DIV. |
|
Condition |
Cooling fans operating |
HINT:
The waveform will vary with the operating speed of the battery cooling blower assembly.
(7) Waveform 7 (Communication signal from battery voltage sensor to hybrid vehicle control ECU)
|
Item |
Content |
|---|---|
|
Terminal |
CH1: I2-41 (BTH+) - I3-3 (E1) CH2: I2-42 (BTH-) - I3-3 (E1) |
|
Equipment Setting |
2 V/DIV., 500 μs./DIV. |
|
Condition |
Power switch on (IG) |
HINT:
The waveform will vary depending on the content of the digital communication (digital signal).
(8) Waveform 8 (Airbag activation signal)
|
Item |
Content |
|---|---|
|
Terminal |
I3-29 (ABFS) - I3-3 (E1) |
|
Equipment Setting |
5 V/DIV., 125 ms./DIV. |
|
Condition |
Power switch on (READY) |
BATTERY VOLTAGE SENSOR
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Input/Output |
Condition |
Specified Condition |
|---|---|---|---|---|---|
|
z10-1 (TC0) - z10-7 (GC0) |
G - G |
Intake air temperature sensor |
Input |
Power switch on (IG), HV battery 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)) |
|
z10-2 (TB2) - z10-8 (GB2) |
R - R |
Battery temperature sensor 2 |
Input |
Power switch on (IG), 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)) |
|
z10-3 (TB1) - z10-9 (GB1) |
W - W |
Battery temperature sensor 1 |
Input |
Power switch on (IG), 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)) |
|
z10-4 (TB0) - z10-10 (GB0) |
L - L |
Battery temperature sensor 0 |
Input |
Power switch on (IG), 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)) |
|
z10-5 (IB0) - z10-12 (GIB) |
Y - B |
Battery current sensor |
Input |
Power switch on (READY) |
0.5 to 4.5 V |
|
z10-6 (VIB) - z10-12 (GIB) |
BR - B |
Power source for battery current sensor |
Output |
Power switch on (IG) |
4.5 to 5.5 V |
|
O33-1 (IGCT) - O33-5 (GND) |
BR - W-B |
Control signal |
Input |
Power switch on (READY) |
11 to 15.5 V |
|
O33-2 (BTH+) - O33-5 (GND) |
GR - W-B |
Serial communication |
Output |
Power switch on (IG) |
Pulse generation (waveform 1) |
|
O33-3 (BTH-) - O33-5 (GND) |
LG - W-B |
Serial communication |
Output |
Power switch on (IG) |
Pulse generation (waveform 2) |
|
O33-5 (GND) - Body ground |
W-B - Body ground |
Ground |
- |
Always (continuity check) |
Below 1 Ω |
|
O33-8 (FP0) - O33-5 (GND) |
B - W-B |
Battery cooling blower No. 0 monitor signal |
Input |
Battery cooling blower stopped |
0 Hz |
|
Battery cooling blower activated |
Pulse generation (waveform 3) |
(a) Oscilloscope waveforms
HINT:
Oscilloscope waveform samples are provided here for informational purposes. Noise and fluttering waveforms have been omitted.
(1) Waveform 1 (Serial communication)
|
Item |
Content |
|---|---|
|
Terminal |
O33-2 (BTH+) - O33-5 (GND) |
|
Equipment Setting |
2 V/DIV., 500 μs/DIV. |
|
Condition |
Power switch on (IG) |
HINT:
The waveform will vary depending on the content of the digital communication (digital signal).
(2) Waveform 2 (Serial communication)
|
Item |
Content |
|---|---|
|
Terminal |
O33-3 (BTH-) - O33-5 (GND) |
|
Equipment Setting |
2 V/DIV., 500 μs/DIV. |
|
Condition |
Power switch on (IG) |
HINT:
The waveform will vary depending on the content of the digital communication (digital signal).
(3) Waveform 3 (Battery cooling blower No. 0 monitor signal)
|
Item |
Content |
|---|---|
|
Terminal |
O33-8 (FP0) - O33-5 (GND) |
|
Equipment Setting |
2 V/DIV., 2 ms/DIV. |
|
Condition |
Battery cooling blower assembly (No. 0) operating (Active Test of cooling fan being performed) |
HINT:
The frequency of the waveform will vary with the operating speed of the battery cooling blower assembly (No. 0).
|
|