Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM100000001XVKA
Model Year Start: 2022 Model: Camry Prod Date Range: [08/2021 -           ]
Title: LIGHTING (EXT): LIGHTING SYSTEM: TERMINALS OF ECU; 2022 - 2024 MY Camry [08/2021 -        ]

TERMINALS OF ECU

CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Disconnect the instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors.

(b) Measure the voltage and resistance according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

3B-3 - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

3C-1 - Body ground

LG - Body ground

Battery power supply

Always

11 to 14 V

3F-1 - Body ground

W - Body ground

Battery power supply

Always

11 to 14 V

(c) Connect the instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors.

(d) Measure the voltage and resistance, and check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

3A-40 - Body ground

LA-G - Body ground

BKUP LP relay drive output

Ignition switch off

Below 1 V

Ignition switch ACC

11 to 14 V

3C-18 - Body ground*1

SB - Body ground

Parking brake switch input

Parking brake switch on

Below 1 V

Parking brake switch off

11 to 14 V

3C-19 - Body ground

BE - Body ground

BKUP LP relay drive output

Ignition switch off, shift lever not in R

Below 1 V

Ignition switch ON, shift lever in R

11 to 14 V

3C-23 - Body ground

LA-P - Body ground

BKUP LP relay drive output

Ignition switch off

Below 1 V

Ignition switch ON

11 to 14 V

3C-28 - Body ground

LA-GR - Body ground*2

GR - Body ground*3

Daytime running light system drive output

Daytime running light system operating

Below 1 V

Daytime running light system not operating

11 to 14 V

3C-31 - Body ground

V - Body ground

H-LP LH relay drive output

Light control switch in head position

Below 1 V

Taillights off

11 to 14 V

3C-32 - Body ground

LA-B - Body ground

Parking lights and front side marker lights drive output

Taillights on

11 to 14 V

Taillights off

Below 1 V

3D-10 - Body ground

LG - Body ground

Back-up lights drive output

Ignition switch off, shift lever not in R

Below 1 V

Ignition switch ON, shift lever in R

11 to 14 V

3D-30 - Body ground

LA-B - Body ground

Taillights, rear side marker lights and license plate lights drive output

Taillights on

11 to 14 V

Taillights off

Below 1 V

K51-14 (LLEW) - Body ground

GR - Body ground

Light control LED ECU LH signal input

Ignition switch ON, taillights off

11 to 14 V

Ignition switch ON, light control switch in head position

Pulse generation

K51-15 (RLEW) - Body ground

R - Body ground

Light control LED ECU RH signal input

Ignition switch ON, taillights off

11 to 14 V

Ignition switch ON, light control switch in head position

Pulse generation

K51-19 (GND2) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

K51-23 (AHID) - Body ground

BE - Body ground

Auto high beam switch indicator drive output

Ignition switch ON, auto high beam switch on

Below 1 V

Ignition switch ON, auto high beam switch off

11 to 14 V

K52-12 (HRY2) - Body ground

BE - Body ground

H-LP RH relay drive output

Light control switch in head position

Below 1 V

Taillights off

11 to 14 V

K52-13 (DIM) - Body ground

G - Body ground

High beam headlight drive output

Light control switch in head position and dimmer switch in high or high flash position

Below 1 V

Dimmer switch not in high or high flash position

11 to 14 V

K52-16 (HEAD) - Body ground

LG - Body ground

Light control switch head position input

Light control switch in head position

Below 1 V

Light control switch not in head position

11 to 14 V

K52-23 (CLTB) - K52-25 (CLTE)

BE - GR

Automatic light control sensor power supply output

Ignition switch off

Below 1 V

Ignition switch ON

11 to 14 V

K52-24 (CLTS) - Body ground

R - Body ground

Automatic light control sensor signal input

Ignition switch off

Below 1 V

Ignition switch ON

Pulse generation

(See waveform 1)

K52-26 (AHBI) - Body ground

B - Body ground

Auto high beam switch signal input

Auto high beam switch on

Below 1 V

Auto high beam switch off

11 to 14 V

  • *1: w/o Electric Parking Brake
  • *2: for Bulb Type Turn Signal Light
  • *3: for LED Type Turn Signal Light

(1) Waveform 1

Item

Content

Tester Connection

K52-24 (CLTS) - Body ground

Tool setting

2 V/DIV., 10 ms./DIV.

Condition

Ignition switch ON

HINT:

The communication waveform changes according to the surrounding brightness.

CHECK COMBINATION METER ASSEMBLY

Click here 2021 - 2024 MY Camry [10/2020 -        ]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: TERMINALS OF ECU

CHECK FORWARD RECOGNITION CAMERA

Click here 2021 - 2024 MY Camry [10/2020 -        ]; CRUISE CONTROL: FRONT CAMERA SYSTEM: TERMINALS OF ECU

CHECK STEERING SENSOR

Click here 2021 - 2022 MY Camry [10/2020 - 08/2022]; NETWORKING: CAN COMMUNICATION SYSTEM: TERMINALS OF ECU 2023 - 2024 MY Camry [08/2022 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: TERMINALS OF ECU