Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM10000000157BX
Model Year Start: 2018 Model: Camry HV Prod Date Range: [07/2017 - 09/2019]
Title: LIGHTING (EXT): LIGHTING SYSTEM (w/ AFS): TERMINALS OF ECU; 2018 - 2019 MY Camry HV [07/2017 - 09/2019]

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

LA - Body ground

Ground

Always

Below 1 Ω

3C-1 - Body ground

LG - Body ground

Auxiliary battery power supply

Power switch off

11 to 14 V

3F-1 - Body ground

W - Body ground

Auxiliary battery power supply

Power switch off

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

3C-19 - Body ground

BE - Body ground

BKUP LP relay drive output

Power switch off, shift lever not in R

Below 1 V

Power switch on (IG), shift lever in R

11 to 14 V

3C-31 - Body ground

V - Body ground

H-LP LH relay drive output

  • Power switch on (IG) or within 15 seconds after power switch turned off
  • Light control switch in tail or head position

Below 1 V

  • 15 seconds or more after power switch turned off
  • Light control switch off

11 to 14 V

3D-10 - Body ground

LG - Body ground

Back-up lights drive output

Power switch off, shift lever not in R

Below 1 V

Power switch on (IG), 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

Light control switch in tail or head position

11 to 14 V

Light control switch off

Below 1 V

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

Power switch on (IG), auto high beam switch on

Below 1 V

Power switch on (IG), auto high beam switch off

11 to 14 V

K52-12 (HRY2) - Body ground

BE - Body ground

H-LP RH relay drive output

  • Power switch on (IG) or within 15 seconds after power switch turned off
  • Light control switch in tail or head position

Below 1 V

  • 15 seconds or more after power switch turned off
  • Light control switch off

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

Power switch off

Below 1 V

Power switch on (IG)

11 to 14 V

K52-24 (CLTS) - Body ground

R - Body ground

Automatic light control sensor signal input

Power switch off

Below 1 V

Power switch on (IG)

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) Waveform 1

Item

Content

Tester Connection

K52-24 (CLTS) - Body ground

Tool setting

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

Condition

Power switch on (IG)

HINT:

The communication waveform changes according to the surrounding brightness.

CHECK HEADLIGHT ECU SUB-ASSEMBLY LH

(a) Disconnect the A10 headlight ECU sub-assembly LH connector.

(b) Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

A10-4 (IG) - Body ground

B - Body ground

Ignition power supply

Power switch off

Below 1 V

Power switch on (IG)

11 to 14 V

A10-12 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

A10-13 (ECUB) - Body ground

B - Body ground

Auxiliary battery power supply

  • 15 seconds or more after power switch turned off
  • Light control switch off

Below 1 V

  • Power switch on (IG) or within 15 seconds after power switch turned off
  • Light control switch in tail or head position

9.5 to 14 V

(c) Connect the A10 headlight ECU sub-assembly LH connector.

HINT:

  • Since the A10 headlight ECU sub-assembly LH connector is a waterproof type connector, the voltage and pulses cannot be checked directly. The values listed are for reference only.
  • Since the B and C headlight ECU sub-assembly LH connectors are connected inside the headlight assembly, the voltage and pulses cannot be checked directly. The values listed are for reference only.

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

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

A10-11 (TNS) - Body ground

LA-LG - Body ground

Front turn signal light signal input

Power switch on (IG), front turn signal light off

Below 1 V

Power switch on (IG), front turn signal light blinking

11 to 14 V ←→ Below 1 V

A10-16 (SBR) - A10-15 (SGR)

LG - G

Rear height control sensor sub-assembly LH power supply

Power switch on (IG)

4.75 to 5.25 V

A10-17 (SHRL) - A10-15 (SGR)

BE - G

Rear height control sensor sub-assembly LH signal input

Power switch on (IG), vehicle unloaded, vehicle stopped

Approximately 2.5 V

(value decreases as the front of the vehicle is raised)

A10-19 (LINS) - Body ground

P - Body ground

LIN communication line

Power switch off

Below 1 V

Power switch on (IG)

Pulse generation

A10-20 (LINL) - Body ground

L - Body ground

LIN communication line

Power switch off

Below 1 V

Power switch on (IG)

Pulse generation

A10-23 (CANL) - Body ground

W - Body ground

CAN communication line

Power switch off

Below 1 V

Power switch on (IG)

Pulse generation

A10-24 (CANH) - Body ground

P - Body ground

CAN communication line

Power switch off

Below 1 V

Power switch on (IG)

Pulse generation

B-2 (LOLED2) - B-3 (LOLED1)

-

Low beam headlights drive output

Low beam headlights off

Below 1 V

Low beam headlights on

10 to 19 V

B-4 (FANB) - B-14 (FANG)

-

Headlight fan power source

Low beam headlights off

Below 1 V

Low beam headlights on

4.75 to 5.25 V

B-9 (ACTBI) - B-17 (ACTGI)

-

Headlight swivel and leveling motor power source

Power switch off

Below 1 V

Power switch on (IG)

11 to 14 V

B-10 (DRL/CLL+) - B-1 (DRL/CLL-)

-

Parking lights/daytime running lights power source

Parking lights and daytime running lights off

Below 1 V

Parking lights and daytime running lights on

11 to 14 V

B-15 (FANP) - B-14 (FANG)

-

Headlight fan control signal input

Low beam headlights off

Below 1 V

Low beam headlights on

Pulse generation

B-16 (PWM1) - B-1 (DRL/CLL-)

-

Parking lights/daytime running lights control signal output

Parking lights and daytime running lights off

Below 1 V

Parking lights and daytime running lights on

Pulse generation

B-18 (FSML+) - B-12 (FSML-)

-

Front side marker light drive output

Front side marker light off

Below 1 V

Front side marker light on

11 to 14 V

B-19 (HI_SOL+) - B-11 (HI_SOL-)

-

High beam headlights drive output

High beam headlights off

Below 1 V

High beam headlights on

11 to 14 V

B-20 (TURN+) - B-13 (TURN-)

-

Front turn signal light signal output

Power switch on (IG), front turn signal light off

Below 1 V

Power switch on (IG), front turn signal light blinking

11 to 14 V ←→ Below 1 V

C-4 (LINSI) - Body ground

-

LIN communication line

Power switch off

Below 1 V

Power switch on (IG)

Pulse generation

C-13 (LINLI) - Body ground

-

LIN communication line

Power switch off

Below 1 V

Power switch on (IG)

Pulse generation

CHECK HEADLIGHT ECU SUB-ASSEMBLY RH

(a) Disconnect the A11 headlight ECU sub-assembly RH connector.

(b) Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

A11-4 (IG) - Body ground

B - Body ground

Ignition power supply

Power switch off

Below 1 V

Power switch on (IG)

11 to 14 V

A11-12 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

A11-13 (ECUB) - Body ground

BE - Body ground

Auxiliary battery power supply

  • 15 seconds or more after power switch turned off
  • Light control switch off

Below 1 V

  • Power switch on (IG) or within 15 seconds after power switch turned off
  • Light control switch in tail or head position

9.5 to 14 V

(c) Connect the A11 headlight ECU sub-assembly RH connector.

HINT:

  • Since the A11 headlight ECU sub-assembly RH connector is a waterproof type connector, the voltage and pulses cannot be checked directly. The values listed are for reference only.
  • Since the B and C headlight ECU sub-assembly RH connectors are connected inside the headlight assembly, the voltage and pulses cannot be checked directly. The values listed are for reference only.

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

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

A11-11 (TNS) - Body ground

LA-G - Body ground

Front turn signal light signal input

Power switch on (IG), front turn signal light off

Below 1 V

Power switch on (IG), front turn signal light blinking

11 to 14 V ←→ Below 1 V

A11-19 (LINS) - Body ground

P - Body ground

LIN communication line

Power switch off

Below 1 V

Power switch on (IG)

Pulse generation

A11-20 (LINL) - Body ground

L - Body ground

LIN communication line

Power switch off

Below 1 V

Power switch on (IG)

Pulse generation

A11-23 (CANL) - Body ground

W - Body ground

CAN communication line

Power switch off

Below 1 V

Power switch on (IG)

Pulse generation

A11-24 (CANH) - Body ground

L - Body ground

CAN communication line

Power switch off

Below 1 V

Power switch on (IG)

Pulse generation

B-2 (LOLED2) - B-3 (LOLED1)

-

Low beam headlights drive output

Low beam headlights off

Below 1 V

Low beam headlights on

10 to 19 V

B-4 (FANB) - B-14 (FANG)

-

Headlight fan power source

Low beam headlights off

Below 1 V

Low beam headlights on

4.75 to 5.25 V

B-9 (ACTBI) - B-17 (ACTGI)

-

Headlight swivel and leveling motor power source

Power switch off

Below 1 V

Power switch on (IG)

11 to 14 V

B-10 (DRL/CLL+) - B-1 (DRL/CLL-)

-

Parking lights/daytime running lights power source

Parking lights and daytime running lights off

Below 1 V

Parking lights and daytime running lights on

11 to 14 V

B-15 (FANP) - B-14 (FANG)

-

Headlight fan control signal input

Low beam headlights off

Below 1 V

Low beam headlights on

Pulse generation

B-16 (PWM1) - B-1 (DRL/CLL-)

-

Parking lights/daytime running lights control signal output

Parking lights and daytime running lights off

Below 1 V

Parking lights and daytime running lights on

Pulse generation

B-18 (FSML+) - B-12 (FSML-)

-

Front side marker light drive output

Front side marker light off

Below 1 V

Front side marker light on

11 to 14 V

B-19 (HI_SOL+) - B-11 (HI_SOL-)

-

High beam headlights drive output

High beam headlights off

Below 1 V

High beam headlights on

11 to 14 V

B-20 (TURN+) - B-13 (TURN-)

-

Front turn signal light signal output

Power switch on (IG), front turn signal light off

Below 1 V

Power switch on (IG), front turn signal light blinking

11 to 14 V ←→ Below 1 V

C-4 (LINSI) - Body ground

-

LIN communication line

Power switch off

Below 1 V

Power switch on (IG)

Pulse generation

C-13 (LINLI) - Body ground

-

LIN communication line

Power switch off

Below 1 V

Power switch on (IG)

Pulse generation

CHECK COMBINATION METER ASSEMBLY

Click here 2018 - 2019 MY Camry HV [07/2017 - 09/2019]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: TERMINALS OF ECU

CHECK FORWARD RECOGNITION CAMERA

Click here 2018 - 2020 MY Camry HV [07/2017 - 10/2020]; CRUISE CONTROL: FORWARD RECOGNITION CAMERA SYSTEM: TERMINALS OF ECU

CHECK STEERING SENSOR

Click here 2018 MY Camry HV [07/2017 - 09/2018]; NETWORKING: CAN COMMUNICATION SYSTEM: TERMINALS OF ECU 2019 MY Camry HV [09/2018 - 09/2019]; NETWORKING: CAN COMMUNICATION SYSTEM: TERMINALS OF ECU

CHECK HYBRID VEHICLE CONTROL ECU ASSEMBLY

for NICKEL METAL HYDRIDE BATTERY: Click here 2018 - 2019 MY Camry HV [07/2017 - 09/2019]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): TERMINALS OF ECU

for LITHIUM-ION BATTERY: Click here 2018 - 2019 MY Camry HV [07/2017 - 09/2019]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY): TERMINALS OF ECU