| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM1000000021J1C |
| Model Year Start: 2022 | Model: RAV4 | Prod Date Range: [12/2021 - ] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): B2781; Open / Short in Steering Lock ECU; 2022 - 2024 MY RAV4 [12/2021 - ] | ||
|
DTC |
B2781 |
Open / Short in 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 |
Note |
|---|---|---|---|---|
|
B2781 |
Open / Short in Steering Lock ECU |
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).)):
|
ID code box (immobiliser code ECU) |
DTC Output Confirmation Operation:
|
Vehicle Condition and Fail-safe Function when Malfunction Detected
|
Vehicle Condition when Malfunction Detected |
Fail-safe Function when Malfunction Detected |
|---|---|
|
Engine cannot be started. |
Prohibits the engine from being started. |
Related Data List and Active Test Items
|
DTC No. |
Data List and Active Test |
|---|---|
|
B2781 |
- |
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.
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![2022 - 2024 MY RAV4 [12/2021 - ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING](/t3Portal/stylegraphics/info.gif)
-
Before replacing the ID code box (immobiliser code ECU), refer to the Registration.
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- After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
HINT:
When all the ECUs that are connected via LIN communication cannot communicate with the certification ECU (smart key ECU assembly), DTC B2785 is stored.
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 |
|
|
|
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
|
|
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)
|
| B |
|
END |
|
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