Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM1000000021HPX
Model Year Start: 2022 Model: RAV4 Prod Date Range: [12/2021 -           ]
Title: NETWORKING: LIN COMMUNICATION SYSTEM: B2786; No Response from Steering Lock ECU; 2022 - 2024 MY RAV4 RAV4 HV [12/2021 -        ]

DTC

B2786

No Response from Steering Lock ECU

DESCRIPTION

As this DTC is not normally output, it may be due to noise in the LIN communication system, etc.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B2786

No Response from Steering Lock ECU

Noise in the LIN communication system, etc.

ID code box (immobiliser code ECU)

CAUTION / NOTICE / HINT

NOTICE:

  • When using the Techstream with the ignition switch off to troubleshoot:

    Connect the Techstream to the vehicle, and turn a courtesy light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins.

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.
  • Before replacing the certification ECU (smart key ECU assembly) or steering lock actuator assembly, refer to the smart key system (for start function).

    for HV Model: Click here 2022 - 2024 MY RAV4 HV [12/2021 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION

    for Gasoline Model: Click here 2022 - 2024 MY RAV4 [12/2021 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION

HINT:

When the communication between the steering lock actuator or upper bracket assembly and certification ECU (smart key ECU assembly) stops, DTC B2785 is also stored.

PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTCs.

Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; NETWORKING: LIN COMMUNICATION SYSTEM: DTC CHECK / CLEAR

Body Electrical > Smart Key > Clear DTCs

(b) Recheck for DTCs.

Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; NETWORKING: LIN COMMUNICATION SYSTEM: DTC CHECK / CLEAR

Body Electrical > Smart Key > Trouble Codes

OK:

DTC B2786 is not output.

OK

USE SIMULATION METHOD TO CHECK

NG

REPLACE ID CODE BOX (IMMOBILIZER CODE ECU)