Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001N31V
Model Year Start: 2021 Model: Corolla Prod Date Range: [04/2020 - 09/2022]
Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): TERMINALS OF ECU; 2021 - 2022 MY Corolla Corolla HV [04/2020 - 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)

I2-9 (CA4H) - I3-3 (E1)

V - W-B

IN/OUT

CAN communication signal

Power switch on (IG)

Pulse generation

(Waveform 5)

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 6)

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 6)

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 6)

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)

I2-22 (CA4L) - I3-3 (E1)

G - W-B

IN/OUT

CAN communication signal

Power switch on (IG)

Pulse generation

(Waveform 5)

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

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 7)

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 (CAN communication signal)

Item

Content

Terminal

CH1: I2-9 (CA4H) - I3-3 (E1)

CH2: I2-22 (CA4L) - 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).

(6) Waveform 6 (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)

(7) Waveform 7 (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)