Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM1000000021J1R
Model Year Start: 2022 Model: RAV4 Prod Date Range: [12/2021 -           ]
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): B2788; IG2 Signal Malfunction; 2022 - 2024 MY RAV4 [12/2021 -        ]

DTC

B2788

IG2 Signal Malfunction

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

Note

B2788

IG2 Signal Malfunction

One of the following conditions is met (1-trip detection logic (Only output while a malfunction is present and the engine switch is on (IG).)):

  • Noise in the LIN communication system, etc.

ID code box (immobiliser code ECU)

DTC Output Confirmation Operation:

  • No confirmation operation is necessary (monitoring is continuous).

Vehicle Condition and Fail-safe Function when Malfunction Detected

Vehicle Condition when Malfunction Detected

Fail-safe Function when Malfunction Detected

Engine cannot be started.

-

Related Data List and Active Test Items

DTC No.

Data List and Active Test

B2788

-

CAUTION / NOTICE / HINT

NOTICE:

  • When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
  • The smart key system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly.

    Click here 2022 - 2023 MY RAV4 [12/2021 - 10/2023]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING 2024 MY RAV4 [10/2023 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • Before replacing the ID code box (immobiliser code ECU), refer to the Registration.

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

  • After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

PROCEDURE

1.

CHECK FOR DTC

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Smart Key / Trouble Codes.

(e) Check for DTCs.

Body Electrical > Smart Key > Trouble Codes

Result

Proceed to

DTC B2785 is not output.

A

DTC B2785 is output.

B

B

GO TO LIN COMMUNICATION SYSTEM (DTC B2785)

A

2.

CLEAR DTC

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

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

(e) Clear the DTCs.

Body Electrical > Smart Key > Clear DTCs

NEXT

3.

CHECK FOR DTC

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Smart Key / Trouble Codes.

(e) Check for DTCs.

Body Electrical > Smart Key > Trouble Codes

Result

Proceed to

DTC is output

A

DTC is not output

B

A

REPLACE ID CODE BOX (IMMOBILISER CODE ECU) 2022 MY RAV4 RAV4 HV [12/2021 - 10/2022]; THEFT DETERRENT / KEYLESS ENTRY: ID CODE BOX: REMOVAL 2023 MY RAV4 RAV4 HV [10/2022 - 10/2023]; THEFT DETERRENT / KEYLESS ENTRY: ID CODE BOX: REMOVAL 2024 MY RAV4 RAV4 HV [10/2023 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ID CODE BOX: REMOVAL

B

END