| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001G22R |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - ] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): B278D; Malfunction of ID-BOX Recognition; 2019 - 2024 MY RAV4 [11/2018 - ] | ||
|
DTC |
B278D |
Malfunction of ID-BOX Recognition |
DESCRIPTION
When the certification ECU (smart key ECU assembly) detects an input signal indicating that the vehicle is equipped with an ID code box even though the ID code box is not registered, the certification ECU (smart key ECU assembly) stores this DTC.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Note |
|---|---|---|---|---|
|
B278D |
Malfunction of ID-BOX Recognition |
One of the following conditions is met:
|
Misconnection of the ID code box |
DTC output confirmation operation:
|
Vehicle Condition and Fail-safe Operation when Malfunction Detected
|
Vehicle Condition when Malfunction Detected |
Fail-safe Operation when Malfunction Detected |
|---|---|
|
Key registration will be prohibited |
- |
Related Data List and Active Test
|
DTC No. |
Data List and Active Test |
|---|---|
|
B278D |
- |
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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![2019 - 2020 MY RAV4 [11/2018 - 08/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING](/t3Portal/stylegraphics/info.gif)
- Before performing following procedure, check that the ID code box (immobiliser code ECU) is not installed on the vehicle.
-
Before replacing the certification ECU (smart key ECU assembly), refer to the Registration.
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- After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
PROCEDURE
|
1. |
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 / Trouble Codes.
(e) Clear the DTCs.
Body Electrical > Smart Key > Clear DTCs
|
|
2. |
CHECK FOR DTC |
(a) Enter the following menus: Body Electrical / Smart Key / Trouble Codes.
(b) Check for DTCs.
Body Electrical > Smart Key > Trouble Codes
HINT:
Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure.
|
Result |
Proceed to |
|---|---|
|
DTC B278D is not output. |
A |
|
DTC B278D is output. |
B |
| A |
|
END |
| B |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
|
|