Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM100000001T39U
Model Year Start: 2021 Model: Camry HV Prod Date Range: [10/2020 -           ]
Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY): TERMINALS OF ECU; 2021 - 2024 MY Camry HV [10/2020 -        ]

TERMINALS OF ECU

Terminal No.

(Symbol)

Wiring Color

Terminal Description

Input/Output

Condition

Specified Condition

A28-1 (+B2) - K69-6 (E1)

W - W-B

Power source

Input

Power switch on (IG)

11 to 14 V

A28-3 (IG2) - K69-6 (E1)

B - W-B

Power source

Input

Power switch on (IG)

11 to 14 V

A28-8 (VCP2) - A28-18 (EPA2)

SB - P

Accelerator pedal sensor assembly power source (for VPA2)

Output

Power switch on (IG)

4.5 to 5.5 V

A28-9 (VCPA) - A28-20 (EPA)

BE - L

Accelerator pedal sensor assembly power source (for VPA)

Output

Power switch on (IG)

4.5 to 5.5 V

A28-13 (IWP) - K69-6 (E1)

L - W-B

Inverter water pump with motor assembly signal

Output

Power switch on (READY)

Pulse generation

(Waveform 1)

A28-14 (NIWP) - K69-6 (E1)

W - W-B

Inverter water pump with motor assembly signal

Input

Power switch on (READY)

Pulse generation

(Waveform 1)

A28-15 (STP) - K69-6 (E1)

LA-G - W-B

Stop light switch

Input

Brake pedal depressed

11 to 14 V

Brake pedal released

0 to 1.5 V

A28-17 (LIN3) - K69-6 (E1)

L - W-B

LIN communication signal (A/C inverter, auxiliary battery state sensor)

Input/Output

Power switch on (READY)

Pulse generation

A28-21 (TTA) - A28-31 (ETTA)

GR - SB

Transmission fluid temperature sensor

Input

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

A28-22 (ACCI) - K69-6 (E1)

P - W-B

ACC relay

Input

Power switch on (ACC)

11 to 14 V

A28-24 (MMT) - A28-23 (MMTG)

G - R

Motor temperature sensor

Input

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

A28-26 (GMT) - A28-27 (GMTG)

P - V

Generator temperature sensor

Input

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

A28-28 (VPA2) - A28-18 (EPA2)

GR - P

Accelerator pedal sensor assembly (for accelerator pedal position detection)

Input

Power switch on (IG), accelerator pedal released

1.0 to 2.2 V

Power switch on (IG), engine stopped, shift lever in P, accelerator pedal fully depressed

3.4 to 5.3 V

A28-30 (VPA) - A28-20 (EPA)

G - L

Accelerator pedal sensor assembly (for accelerator pedal position detection)

Input

Power switch on (IG), accelerator pedal released

0.4 to 1.4 V

Power switch on (IG), engine stopped, shift lever in P, accelerator pedal fully depressed

2.6 to 4.5 V

A29-1 (PSFT) - K69-6 (E1)

L - W-B

Shift lever position sensor power source

Output

Power switch on (ACC)

6.0 to 14 V

A29-2 (BL) - K69-6 (E1)

BE - W-B

Back-up light

Output

Power switch on (IG), shift lever in R

11 to 14 V

A29-4 (+B1) - K69-6 (E1)

R - W-B

Power source

Input

Power switch on (IG)

11 to 14 V

A29-6 (MREL) - K69-6 (E1)

G - W-B

Main relay

Output

Power switch on (IG)

11 to 14 V

A29-7 (IGB) - K69-6 (E1)

B - W-B

Power source

Input

Power switch on (IG)

8.5 to 14 V

A29-12 (HSDN) - K69-6 (E1)

W - W-B

MG ECU shutdown signal

Output

Power switch on (READY)

0 to 1.5 V

A29-13 (ILK) - K69-6 (E1)

GR - W-B

Interlock switch

Input

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

A29-14 (DB2) - K69-6 (E1)

V - W-B

Shift lever position signal

Input

Power switch on (IG), shift lever in D or S

6.0 to 14 V

Power switch on (IG), shift lever not in D or S

0 to 1.5 V

A29-15 (R) - K69-6 (E1)

LG - W-B

Shift lever position signal

Input

Power switch on (IG), shift lever in R

6.0 to 14 V

Power switch on (IG), shift lever not in R

0 to 1.5 V

A29-17 (PR) - K69-6 (E1)

R - W-B

Shift lever position signal

Input

Power switch on (IG), shift lever in P or R

6.0 to 14 V

Power switch on (IG), shift lever not in P or R

0 to 1.5 V

A29-20 (N) - K69-6 (E1)

G - W-B

Shift lever position signal

Input

Power switch on (IG), shift lever in N

6.0 to 14 V

Power switch on (IG), shift lever not in N

0 to 1.5 V

A29-21 (P) - K69-6 (E1)

BE - W-B

Shift lever position signal

Input

Power switch on (IG), shift lever in P

6.0 to 14 V

Power switch on (IG), shift lever not in P

0 to 1.5 V

A29-26 (DB1) - K69-6 (E1)

W - W-B

Shift lever position signal

Input

Power switch on (IG), shift lever in D or S

6.0 to 14 V

Power switch on (IG), shift lever not in D or S

0 to 1.5 V

A29-28 (ST1-) - K69-6 (E1)

LG - W-B

Stop light switch signal

Input

Power switch on (IG), brake pedal depressed

0 to 1.5 V

Power switch on (IG), brake pedal released

11 to 14 V

A29-30 (HMCL) - K69-6 (E1)

W - W-B

MG ECU communication request signal

Input/Output

Power switch on (IG)

Pulse generation

(Waveform 2)

A29-31 (HMCH) - K69-6 (E1)

B - W-B

MG ECU communication request signal

Input/Output

Power switch on (IG)

Pulse generation

(Waveform 2)

A29-34 (PNB) - K69-6 (E1)

B - W-B

Shift lever position signal

Input

Power switch on (IG), shift lever in P or N

6.0 to 14 V

K69-1 (SMRG) - K69-5 (E01)

G - W-B

System main relay operation signal

Output

Power switch on (IG) → Power switch on (READY)

Pulse generation

(Waveform 3)

K69-3 (SMRP) - K69-5 (E01)

W - W-B

System main relay operation signal

Output

Power switch on (IG) → Power switch on (READY)

Pulse generation

(Waveform 3)

K69-4 (SMRB) - K69-5 (E01)

GR - W-B

System main relay operation signal

Output

Power switch on (IG) → Power switch on (READY)

Pulse generation

(Waveform 3)

K69-8 (INDR) - K69-6 (E1)

P - W-B

Shift position indicator signal

Input

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

K69-9 (ST2) - K69-6 (E1)

L - W-B

Starter signal

Input

Power switch on (IG)

0 to 1.5 V

K69-10 (NORM) ←→ K69-6(E1)

LG - W-B

Normal mode switch (electric parking brake switch assembly) signal

Input

Power switch on (IG), normal mode switch (electric parking brake switch assembly) not operated

11 to 14 V

Power switch on (IG), normal mode switch (electric parking brake switch assembly) operated

0 to 1.5 V

K69-34 (CA4H) ←→ K69-6 (E1)

GR - W-B

CAN communication signal

Input/Output

Power switch on (IG)

Pulse generation

(Waveform 4)

K69-35 (CA4L) ←→ K69-6 (E1)

W - W-B

CAN communication signal

Input/Output

Power switch on (IG)

Pulse generation

(Waveform 4)

K70-1 (M) - K69-6 (E1)

B - W-B

Transmission control

Input

Power switch on (IG), shift lever in S

11 to 14 V

Power switch on (IG), shift lever not in S

0 to 1.5 V

K70-3 (BATT) - K69-6 (E1)

B - W-B

Constant power source

Input

Power switch on (IG)

11 to 14 V

Power switch on (READY)

11 to 15.5 V

K70-6 (SPRT) - K69-6 (E1)

R - W-B

Sport mode switch (electric parking brake switch assembly) signal

Input

Power switch on (IG), sport mode switch (electric parking brake switch assembly) not operated

11 to 14 V

Power switch on (IG), sport mode switch (electric parking brake switch assembly) operated

0 to 1.5 V

K70-7 (PLKC) - K69-6 (E1)

L - W-B

Shift lock release request signal

Output

Power switch on (READY), brake pedal depressed

11 to 14 V

Power switch on (READY), brake pedal released

0 to 1.5 V

K70-8 (SFTD) - K69-6 (E1)

W - W-B*1

G - W-B*2

Transmission control

Input

Power switch on (IG), shift lever in S

11 to 14 V

Power switch on (IG), shift lever in (-) or shift paddle switch LH (-) operated

0 to 1.5 V

K70-9 (SFTU) - K69-6 (E1)

LG - W-B*1

L - W-B*2

Transmission control

Input

Power switch on (IG), shift lever in S

11 to 14 V

Power switch on (IG), shift lever in (+) or shift paddle switch RH (+) operated

0 to 1.5 V

K70-10 (INDM) - K69-6 (E1)

GR - W-B

Shift position indicator signal

Input

Power switch on (IG), shift lever in S

0 to 3.2 V

Power switch on (IG), shift lever not in S

11 to 14 V

K70-11 (INDD) - K69-6 (E1)

W - W-B

Shift position indicator signal

Input

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

K70-12 (INDN) - K69-6 (E1)

R - W-B

Shift position indicator signal

Input

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

K70-13 (INDP) - K69-6 (E1)

L - W-B

Shift position indicator signal

Input

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

K70-14 (ABFS) - K69-6 (E1)

B - W-B

Airbag activation signal

Input

Power switch on (READY)

Pulse generation

(Waveform 5)

K70-15 (EVSW) - K69-6 (E1)

G - W-B

EV drive mode switch (electric parking brake switch assembly) signal

Input

Power switch on (IG), EV drive mode switch (electric parking brake switch assembly) not operated

11 to 14 V

Power switch on (IG), EV drive mode switch (electric parking brake switch assembly) operated

0 to 1.5 V

K70-24 (CA1L) - K69-6 (E1)

W - W-B

CAN communication signal

Input/Output

Power switch on (IG)

Pulse generation

(Waveform 6)

K70-25 (CA1H) - K69-6 (E1)

L - W-B

CAN communication signal

Input/Output

Power switch on (IG)

Pulse generation

(Waveform 6)

K70-30 (CA3N) - K69-6 (E1)

W - W-B

CAN communication signal

Input/Output

Power switch on (IG)

Pulse generation

(Waveform 7)

K70-31 (CA3P) - K69-6 (E1)

V - W-B

CAN communication signal

Input/Output

Power switch on (IG)

Pulse generation

(Waveform 7)

HYBRID VEHICLE CONTROL ECU ASSEMBLY

*1: w/ Shift Paddle Switch

*2: w/o Shift Paddle Switch

(a) Oscilloscope waveforms

HINT:

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

(1) Waveform 1 (Inverter water pump assembly signal)

Item

Content

Terminal

CH1: A28-13 (IWP) - K69-6 (E1)

CH2: A28-14 (NIWP) - K69-6 (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.

(2) Waveform 2 (MG ECU communication request signal)

Item

Content

Terminal

CH1: A29-31 (HMCH) - K69-6 (E1)

CH2: A29-30 (HMCL) - K69-6 (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).

(3) Waveform 3 (System main relay operation signal)

Item

Content

Terminal

CH1: K69-3 (SMRP) - K69-5 (E01)

CH2: K69-4 (SMRB) - K69-5 (E01)

CH3: K69-1 (SMRG) - K69-5 (E01)

Equipment Setting

10 V/DIV., 200 ms./DIV.

Condition

Power switch on (IG) → Power switch on (READY)

(4) Waveform 4 (CAN communication signal)

Item

Content

Terminal

CH1: K69-34 (CA4H) - K69-6 (E1)

CH2: K69-35 (CA4L) - K69-6 (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 (Airbag activation signal)

Item

Content

Terminal

K70-14 (ABFS) - K69-6 (E1)

Equipment Setting

5 V/DIV., 150 ms./DIV.

Condition

Power switch on (READY)

(6) Waveform 6 (CAN communication signal)

Item

Content

Terminal

CH1: K70-25 (CA1H) - K69-6 (E1)

CH2: K70-24 (CA1L) - K69-6 (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).

(7) Waveform 7 (CAN communication signal)

Item

Content

Terminal

CH1: K70-31 (CA3P) - K69-6 (E1)

CH2: K70-30 (CA3N) - K69-6 (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).