Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001HG5Z
Model Year Start: 2019 Model: RAV4 Prod Date Range: [02/2019 - 12/2021]
Title: LIGHTING (EXT): LIGHTING SYSTEM (w/ AFS): B2424,B2425; Headlight Beam Level Control Motor LH Lost Communication; 2019 - 2021 MY RAV4 RAV4 HV [02/2019 - 12/2021]

DTC

B2424

Headlight Beam Level Control Motor LH Lost Communication

DTC

B2425

Headlight Beam Level Control Motor RH Lost Communication

DESCRIPTION

Each headlight ECU sub-assembly and headlight swivel and leveling motor communicate via LIN communication.

The headlight swivel and leveling motor operates according to power supplied and automatic headlight beam level control signals from its respective headlight ECU sub-assembly and sends its operating state to the headlight ECU sub-assembly.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

B2424

Headlight Beam Level Control Motor LH Lost Communication

Detection condition:

  • The power switch is on (IG).

Malfunction status:

  • LIN communication error

Malfunction duration:

  • 10 seconds or more
  • Headlight unit assembly LH
  • Headlight unit assembly RH
  • Harness or connector
  • Headlight ECU sub-assembly LH
  • Headlight ECU sub-assembly RH

AFS

B2425

Headlight Beam Level Control Motor RH Lost Communication

Detection condition:

  • The power switch is on (IG).

Malfunction status:

  • LIN communication error

Malfunction duration:

  • 10 seconds or more
  • Headlight unit assembly RH
  • Headlight unit assembly LH
  • Harness or connector
  • Headlight ECU sub-assembly RH
  • Headlight ECU sub-assembly LH

AFS

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.

Click here 2019 - 2021 MY RAV4 RAV4 HV [02/2019 - 12/2021]; LIGHTING (EXT): LIGHTING SYSTEM (w/ AFS): INITIALIZATION

PROCEDURE

1.

CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / AFS / Clear DTCs.

(e) Clear the DTCs.

Body Electrical > AFS > Clear DTCs

NEXT

2.

CHECK FOR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Wait 10 seconds or more.

(d) Turn the Techstream on.

(e) Enter the following menus: Body Electrical / AFS / Trouble Codes.

(f) Check for DTCs.

Body Electrical > AFS > Trouble Codes

OK:

DTC B2424 and B2425 are not output.

Result

Proceed to

OK

A

NG (DTC B2424 is output)

B

NG (DTC B2425 is output)

C

NG (DTC B2424 and B2425 are output)

D

A

USE SIMULATION METHOD TO CHECK

C

GO TO STEP 4

D

GO TO STEP 7

B

3.

INSPECT HEADLIGHT ECU SUB-ASSEMBLY LH

*a

Component without harness connected

(Headlight ECU Sub-assembly LH)

-

-

(a) Remove the headlight ECU sub-assembly LH.

Click here 2019 - 2021 MY RAV4 RAV4 HV [02/2019 - 12/2021]; LIGHTING (EXT): HEADLIGHT ECU: REMOVAL

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A11-20 (LINL) - C-13 (LINLI)

Always

Below 1 Ω

OK

REPLACE HEADLIGHT UNIT ASSEMBLY LH

NG

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH

4.

CHECK HARNESS AND CONNECTOR (HEADLIGHT ECU SUB-ASSEMBLY LH - HEADLIGHT ECU SUB-ASSEMBLY RH)

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

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

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A11-20 (LINL) - A12-20 (LINL)

Always

Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

5.

CHECK HEADLIGHT ECU SUB-ASSEMBLY LH (LINL TERMINAL SIGNAL OUTPUT)

*a

Front view of wire harness connector

(to Headlight ECU Sub-assembly RH)

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

(b) Using the Techstream, check the waveform.

OK:

Tester Connection

Switch Condition

Specified Condition

A12-20 (LINL) - Body ground

Power switch on (IG)

Pulse generation

NG

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH

OK

6.

INSPECT HEADLIGHT ECU SUB-ASSEMBLY RH

*a

Component without harness connected

(Headlight ECU Sub-assembly RH)

-

-

(a) Remove the headlight ECU sub-assembly RH.

Click here 2019 - 2021 MY RAV4 RAV4 HV [02/2019 - 12/2021]; LIGHTING (EXT): HEADLIGHT ECU: REMOVAL

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A12-20 (LINL) - C-13 (LINLI)

Always

Below 1 Ω

OK

REPLACE HEADLIGHT UNIT ASSEMBLY RH

NG

REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH

7.

CHECK HARNESS AND CONNECTOR (HEADLIGHT ECU SUB-ASSEMBLY LH - HEADLIGHT ECU SUB-ASSEMBLY RH)

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

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

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A11-20 (LINL) or A12-20 (LINL) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

8.

CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / AFS / Clear DTCs.

(e) Clear the DTCs.

Body Electrical > AFS > Clear DTCs

NEXT

9.

CHECK FOR DTC

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

(b) Connect the Techstream to the DLC3.

(c) Turn the power switch on (IG).

(d) Wait 10 seconds or more.

(e) Turn the Techstream on.

(f) Enter the following menus: Body Electrical / AFS / Trouble Codes.

(g) Check for DTCs.

Body Electrical > AFS > Trouble Codes

Result

Proceed to

DTC B2425 is output

A

DTC B2424 and B2425 are output

B

B

GO TO STEP 12

A

10.

CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / AFS / Clear DTCs.

(e) Clear the DTCs.

Body Electrical > AFS > Clear DTCs

NEXT

11.

CHECK FOR DTC

(a) Remove the headlight ECU sub-assembly RH from headlight unit assembly RH.

Click here 2019 - 2021 MY RAV4 RAV4 HV [02/2019 - 12/2021]; LIGHTING (EXT): HEADLIGHT ECU: REMOVAL

(b) Reconnect the A12 headlight ECU sub-assembly RH connector.

(c) Connect the Techstream to the DLC3.

(d) Turn the power switch on (IG).

(e) Wait 10 seconds or more.

(f) Turn the Techstream on.

(g) Enter the following menus: Body Electrical / AFS / Trouble Codes.

(h) Check for DTCs.

Body Electrical > AFS > Trouble Codes

Result

Proceed to

DTC B2425 is output

A

DTC B2424 and B2425 are output

B

A

REPLACE HEADLIGHT UNIT ASSEMBLY RH

B

REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH

12.

CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / AFS / Clear DTCs.

(e) Clear the DTCs.

Body Electrical > AFS > Clear DTCs

NEXT

13.

CHECK FOR DTC

(a) Remove the headlight ECU sub-assembly LH from headlight unit assembly LH.

Click here 2019 - 2021 MY RAV4 RAV4 HV [02/2019 - 12/2021]; LIGHTING (EXT): HEADLIGHT ECU: REMOVAL

(b) Reconnect the A11 headlight ECU sub-assembly LH connector.

(c) Connect the Techstream to the DLC3.

(d) Turn the power switch on (IG).

(e) Wait 10 seconds or more.

(f) Turn the Techstream on.

(g) Enter the following menus: Body Electrical / AFS / Trouble Codes.

(h) Check for DTCs.

Body Electrical > AFS > Trouble Codes

Result

Proceed to

DTC B2424 is output

A

DTC B2424 and B2425 are output

B

A

REPLACE HEADLIGHT UNIT ASSEMBLY LH

B

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH