Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM1000000026T6N
Model Year Start: 2021 Model: RAV4 Prod Date Range: [08/2020 - 12/2021]
Title: LIGHTING (EXT): LIGHTING SYSTEM (w/ Headlight ECU without AFS): TERMINALS OF ECU; 2021 MY RAV4 RAV4 HV [08/2020 - 12/2021]

TERMINALS OF ECU

*1

Main Body ECU (Multiplex Network Body ECU)

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

(a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

  • Click here 2021 MY RAV4 RAV4 HV [08/2020 - 12/2021]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

(b) Connect the instrument panel junction block assembly connectors.

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

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

A-32 (IG) - Body ground

None - Body ground

Ignition power supply

Ignition switch ON

11 to 14 V

Ignition switch off

Below 1 V

A-31 (BECU) - Body ground

None - Body ground

Auxiliary battery power supply

Ignition switch off

11 to 14 V

A-30 (ACC) - Body ground

None - Body ground

ACC power supply

Ignition switch ACC

11 to 14 V

Ignition switch off

Below 1 V

A-11 (GND1) - Body ground

None - Body ground

Ground

Always

Below 1 Ω

(d) Install the main body ECU (multiplex network body ECU).

  • Click here 2021 - 2024 MY RAV4 RAV4 HV [08/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: INSTALLATION

(e) 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

4A-52 (FFGO) - Body ground*1

G - Body ground

FOG FR relay drive output

Taillights on, fog light switch in Fr position

Below 1 V

Taillights on, fog light switch in off position

11 to 14 V

4F-19 - Body ground

LA-BE - Body ground*2

BE - Body ground*3

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

4F-31 (HRLY) - Body ground

V - Body ground

H-LP LH relay drive output

  • 15 seconds or more after ignition switch turned off
  • Taillights off

11 to 14 V

  • Ignition switch ON or within 15 seconds after ignition switch turned off
  • Taillights on

Below 1 V

4H-10 - Body ground

L - 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

4H-30 (TRLY) - Body ground

LA-R - Body ground

Taillights 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

G43-19 (GND2) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

G45-21 (AHID) - Body ground*4

R - 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

G44-12 (HRY2) - Body ground

BE - Body ground

H-LP RH relay drive output

  • 15 seconds or more after ignition switch turned off
  • Taillights off

11 to 14 V

  • Ignition switch ON or within 15 seconds after ignition switch turned off
  • Taillights on

Below 1 V

G44-16 (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

G44-23 (CLTB) - G44-25 (CLTE)

BE - GR

Automatic light control sensor power supply output

Ignition switch ON

11 to 14 V

G44-24 (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)

G44-26 (AHBI) - Body ground*4

G - 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/ Front Fog Light
  • *2: for HV Model
  • *3: for Gasoline Model
  • *4: w/ Automatic High Beam System

(1) Waveform 1

Item

Content

Tester Connection

G44-24 (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 HEADLIGHT ECU SUB-ASSEMBLY LH (for Triple Beam Headlight)

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

(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

A11-4 (IG) - Body ground

B - Body ground

Ignition power supply

Ignition switch off

Below 1 V

Ignition switch ON

11 to 14 V

A11-12 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

A11-13 (ECUB) - Body ground

B - Body ground

Auxiliary battery power supply

  • 15 seconds or more after ignition switch turned off
  • Taillights off

Below 1 V

  • Ignition switch ON or within 15 seconds after ignition switch turned off
  • Taillights on

11 to 14 V

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

HINT:

  • Since the A11 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 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

A11-11 (TNS) - Body ground

LA-LG - Body ground

Front turn signal light signal input

Ignition switch ON, front turn signal light off

Below 1 V

Ignition switch ON, front turn signal light blinking

11 to 14 V ←→ Below 1 V

A11-16 (SBR) - A11-15 (SGR)

LG - R

Rear height control sensor sub-assembly LH power supply

Ignition switch ON

4.75 to 5.25 V

A11-17 (SHRL) - A11-15 (SGR)

GR - R

Rear height control sensor sub-assembly LH signal input

Ignition switch ON, vehicle unloaded, vehicle stopped

Approximately 2.5 V

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

A11-23 (CANL) - Body ground

W - Body ground

CAN communication line

Ignition switch off

Below 1 V

Ignition switch ON

Pulse generation

A11-24 (CANH) - Body ground

P - Body ground

CAN communication line

Ignition switch off

Below 1 V

Ignition switch ON

Pulse generation

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

-

Daytime running lights control signal output

Daytime running lights off

Below 1 V

Daytime running lights on

11 to 14 V

B-2 (CLL-) - B-19 (CLL+)

-

Clearance lights control signal output

Clearance lights off

Below 1 V

Clearance lights on

11 to 14 V

B-4 (LOLED2) - B-3 (LOLED0)

-

Low beam headlights drive output

Low beam headlights off

Below 1 V

Low beam headlights on

11.3 to 15.8 V

B-7 (ACTBI) - B-17 (ACTGI)

-

Headlight leveling motor power source

Ignition switch off

Below 1 V

Ignition switch ON

11 to 14 V

B-8 (ACTSI) - B-17 (ACTGI)

-

Headlight leveling motor signal output

Ignition switch ON, low beam headlights on, vehicle height not changed

Below 1 V

Ignition switch ON, low beam headlights on, vehicle height changed and maintained for more than 3 seconds

1 to 14 V

B-9 (TURN+) - B-13 (TURN-)

-

Front turn signal light signal output

Ignition switch ON, front turn signal light off

Below 1 V

Ignition switch ON, front turn signal light blinking

11 to 14 V ←→ Below 1 V

B-15 (FANP) - B-3 (LOLED0)

-

Headlight malfunction signal input

Low beam headlights off

Below 1 V

Low beam headlights on

Pulse generation

B-20 (HI SOL+) - B-3 (LOLED0)

-

High beam headlights drive output

High beam headlights off

Below 1 V

High beam headlights on

11 to 14 V

CHECK HEADLIGHT ECU SUB-ASSEMBLY LH (for Single Beam Headlight)

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

(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

A11-4 (IG) - Body ground

B - Body ground

Ignition power supply

Ignition switch off

Below 1 V

Ignition switch ON

11 to 14 V

A11-12 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

A11-13 (ECUB) - Body ground

B - Body ground

Auxiliary battery power supply

  • 15 seconds or more after ignition switch turned off
  • Taillights off

Below 1 V

  • Ignition switch ON or within 15 seconds after ignition switch turned off
  • Taillights on

11 to 14 V

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

HINT:

  • Since the A11 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 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

A11-11 (TNS) - Body ground

LA-LG - Body ground

Front turn signal light signal input

Ignition switch ON, front turn signal light off

Below 1 V

Ignition switch ON, front turn signal light blinking

11 to 14 V ←→ Below 1 V

A11-16 (SBR) - A11-15 (SGR)

LG - R

Rear height control sensor sub-assembly LH power supply

Ignition switch ON

4.75 to 5.25 V

A11-17 (SHRL) - A11-15 (SGR)

GR - R

Rear height control sensor sub-assembly LH signal input

Ignition switch ON, vehicle unloaded, vehicle stopped

Approximately 2.5 V

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

A11-23 (CANL) - Body ground

W - Body ground

CAN communication line

Ignition switch off

Below 1 V

Ignition switch ON

Pulse generation

A11-24 (CANH) - Body ground

P - Body ground

CAN communication line

Ignition switch off

Below 1 V

Ignition switch ON

Pulse generation

B-4 (LOLED2) - B-3 (LOLED0)

-

Low beam headlights drive output

Low beam headlights off

Below 1 V

Low beam headlights on

10.6 to 14.7 V

B-6 (FANB) - B-14 (FANG)

-

Headlight fan power source

Low beam headlights off

Below 1 V

Low beam headlights on

4.5 to 5.5 V

B-7 (ACTBI) - B-17 (ACTGI)

-

Headlight leveling motor power source

Ignition switch off

Below 1 V

Ignition switch ON

11 to 14 V

B-8 (ACTSI) - B-17 (ACTGI)

-

Headlight leveling motor signal output

Ignition switch ON, low beam headlights on, vehicle height not changed

Below 1 V

Ignition switch ON, low beam headlights on, vehicle height changed and maintained for more than 3 seconds

1.0 to 14 V

B-9 (TURN+) - B-13 (TURN-)

-

Front turn signal light signal output

Ignition switch ON, front turn signal light off

Below 1 V

Ignition switch ON, front turn signal light blinking

11 to 14 V ←→ Below 1 V

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

-

Clearance lights/daytime running lights power source

Clearance lights and daytime running lights off

Below 1 V

Clearance 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-19 (CLL+) - B-1 (DRL/CLL-)

-

Clearance lights/daytime running lights control signal output

Clearance lights and daytime running lights off

Below 1 V

Clearance lights and daytime running lights on

Pulse generation

B-20 (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

CHECK HEADLIGHT ECU SUB-ASSEMBLY RH (for Triple Beam Headlight)

(a) Disconnect the A12 headlight ECU sub-assembly RH connector.

(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

A12-4 (IG) - Body ground

B - Body ground

Ignition power supply

Ignition switch off

Below 1 V

Ignition switch ON

11 to 14 V

A12-12 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

A12-13 (ECUB) - Body ground

BE - Body ground

Auxiliary battery power supply

  • 15 seconds or more after ignition switch turned off
  • Taillights off

Below 1 V

  • Ignition switch ON or within 15 seconds after ignition switch turned off
  • Taillights on

11 to 14 V

(c) Connect the A12 headlight ECU sub-assembly RH connector.

HINT:

  • Since the A12 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 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

A12-11 (TNS) - Body ground

LA-G - Body ground

Front turn signal light signal input

Ignition switch ON, front turn signal light off

Below 1 V

Ignition switch ON, front turn signal light blinking

11 to 14 V ←→ Below 1 V

A12-23 (CANL) - Body ground

W - Body ground

CAN communication line

Ignition switch off

Below 1 V

Ignition switch ON

Pulse generation

A12-24 (CANH) - Body ground

L - Body ground

CAN communication line

Ignition switch off

Below 1 V

Ignition switch ON

Pulse generation

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

-

Daytime running lights control signal output

Daytime running lights off

Below 1 V

Daytime running lights on

11 to 14 V

B-2 (CLL-) - B-19 (CLL+)

-

Clearance lights control signal output

Clearance lights off

Below 1 V

Clearance lights on

11 to 14 V

B-4 (LOLED2) - B-3 (LOLED0)

-

Low beam headlights drive output

Low beam headlights off

Below 1 V

Low beam headlights on

11.3 to 15.8 V

B-7 (ACTBI) - B-17 (ACTGI)

-

Headlight leveling motor power source

Ignition switch off

Below 1 V

Ignition switch ON

11 to 14 V

B-8 (ACTSI) - B-17 (ACTGI)

-

Headlight leveling motor signal output

Ignition switch ON, low beam headlights on, vehicle height not changed

Below 1 V

Ignition switch ON, low beam headlights on, vehicle height changed and maintained for more than 3 seconds

1 to 14 V

B-9 (TURN+) - B-13 (TURN-)

-

Front turn signal light signal output

Ignition switch ON, front turn signal light off

Below 1 V

Ignition switch ON, front turn signal light blinking

11 to 14 V ←→ Below 1 V

B-15 (FANP) - B-3 (LOLED0)

-

Headlight malfunction signal input

Low beam headlights off

Below 1 V

Low beam headlights on

Pulse generation

B-20 (HI SOL+) - B-3 (LOLED0)

-

High beam headlights drive output

High beam headlights off

Below 1 V

High beam headlights on

11 to 14 V

CHECK HEADLIGHT ECU SUB-ASSEMBLY RH (for Single Beam Headlight)

(a) Disconnect the A12 headlight ECU sub-assembly RH connector.

(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

A12-4 (IG) - Body ground

B - Body ground

Ignition power supply

Ignition switch off

Below 1 V

Ignition switch ON

11 to 14 V

A12-12 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

A12-13 (ECUB) - Body ground

BE - Body ground

Auxiliary battery power supply

  • 15 seconds or more after ignition switch turned off
  • Taillights off

Below 1 V

  • Ignition switch ON or within 15 seconds after ignition switch turned off
  • Taillights on

11 to 14 V

(c) Connect the A12 headlight ECU sub-assembly RH connector.

HINT:

  • Since the A12 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 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

A12-11 (TNS) - Body ground

LA-G - Body ground

Front turn signal light signal input

Ignition switch ON, front turn signal light off

Below 1 V

Ignition switch ON, front turn signal light blinking

11 to 14 V ←→ Below 1 V

A12-23 (CANL) - Body ground

W - Body ground

CAN communication line

Ignition switch off

Below 1 V

Ignition switch ON

Pulse generation

A12-24 (CANH) - Body ground

L - Body ground

CAN communication line

Ignition switch off

Below 1 V

Ignition switch ON

Pulse generation

B-4 (LOLED2) - B-3 (LOLED1)

-

Low beam headlights drive output

Low beam headlights off

Below 1 V

Low beam headlights on

10.6 to 14.7 V

B-6 (FANB) - B-14 (FANG)

-

Headlight fan power source

Low beam headlights off

Below 1 V

Low beam headlights on

4.5 to 5.5 V

B-7 (ACTBI) - B-17 (ACTGI)

-

Headlight leveling motor power source

Ignition switch off

Below 1 V

Ignition switch ON

11 to 14 V

B-8 (ACTSI) - B-17 (ACTGI)

-

Headlight leveling motor signal output

Ignition switch ON, low beam headlights on, vehicle height not changed

Below 1 V

Ignition switch ON, low beam headlights on, vehicle height changed and maintained for more than 3 seconds

1.0 to 14 V

B-9 (TURN+) - B-13 (TURN-)

-

Front turn signal light signal output

Ignition switch ON, front turn signal light off

Below 1 V

Ignition switch ON, front turn signal light blinking

11 to 14 V ←→ Below 1 V

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

-

Clearance lights/daytime running lights power source

Clearance lights and daytime running lights off

Below 1 V

Clearance 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-19 (CLL+) - B-1 (DRL/CLL-)

-

Clearance lights/daytime running lights control signal output

Clearance lights and daytime running lights off

Below 1 V

Clearance lights and daytime running lights on

Pulse generation

B-20 (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

CHECK COMBINATION METER ASSEMBLY

Click here 2021 - 2022 MY RAV4 RAV4 HV [08/2020 - 10/2022]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: TERMINALS OF ECU

CHECK FORWARD RECOGNITION CAMERA

Click here 2019 - 2021 MY RAV4 RAV4 HV [11/2018 - 12/2021]; CRUISE CONTROL: FRONT CAMERA SYSTEM: TERMINALS OF ECU

CHECK STEERING SENSOR

for HV Model:

Click here 2021 MY RAV4 HV [08/2020 - 12/2021]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): TERMINALS OF ECU

for Gasoline Model:

Click here 2021 MY RAV4 [08/2020 - 12/2021]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): TERMINALS OF ECU

CHECK HYBRID VEHICLE CONTROL ECU ASSEMBLY (for HV Model)

Click here 2020 - 2024 MY RAV4 HV [06/2020 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for AWD with NICKEL METAL HYDRIDE BATTERY): TERMINALS OF ECU