DESCRIPTION
- DTC B2793 is stored when a malfunction is found in the key during key code registration or a key code is not registered normally. Replace the key if key code registration cannot be performed normally and this DTC is output.
- DTC B2794 is stored when a key with an incomplete key code is inserted into the ignition key cylinder.
- DTC B2797 is stored when a key with a BCC malfunction is inserted into the ignition key cylinder.
- DTC B2798 is stored when a key is inserted into the ignition key cylinder but a communication error occurs between the key and transponder key ECU assembly.
|
DTC Code |
DTC Detection Condition |
Trouble Area |
DTC Output Confirmation Operation |
|---|---|---|---|
|
B2793 |
A transponder chip malfunction (1 trip detection logic*). |
|
Insert the key into the ignition key cylinder, turn the ignition switch from off to ON and wait at least 20 seconds. |
|
B2794 |
A key with an incomplete key ID code is used to turn the ignition switch to ON (1 trip detection logic*). |
||
|
B2797 |
A key with a BCC malfunction is used to turn the ignition switch to ON (1 trip detection logic*). |
||
|
B2798 |
Key ID code identification cannot be completed within the specified time (1 trip detection logic*). |
- *: Only output while a malfunction is present.
|
Vehicle Condition when Malfunction Detected |
Fail-safe Operation when Malfunction Detected |
|---|---|
|
Engine cannot be started |
- |
|
DTC No. |
Data List and Active Test |
|---|---|
|
B2793 |
- |
|
B2794 |
- |
|
B2797 |
- |
|
B2798 |
- |
CAUTION / NOTICE / HINT
NOTICE:
- If the transponder key ECU assembly or key is replaced, refer to Registration
(See page
.gif)
). - After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
PROCEDURE
|
1. |
CLEAR DTC |
(a) Clear the DTCs (See page ).
|
.gif)
|
2. |
CHECK DTC OUTPUT |
(a) Perform "DTC Output Confirmation Operation" procedure.
(b) Check for DTCs (See page ).
HINT:
If DTC B2793, B2794, B2797, or B2798 is stored, clear the DTCs before checking the next key.
OK:
DTC B2793, B2974, B2797 and B2798 are not output.
Result|
Result |
Proceed to |
|---|---|
|
DTCs are output for all of the keys |
A |
|
DTCs are output for any of the keys |
B |
|
DTCs are not output |
C |
| B | .gif) |
REPLACE KEY THAT DTC IS OUTPUT |
| C | |
USE SIMULATION METHOD TO CHECK |
|
|
3. |
CHECK CONNECTION OF CONNECTOR |
(a) Check that the connector is properly connected to the transponder key coil.
(b) Check that the engine starts with the key.
OK:
Engine starts normally.
| OK | |
END (CONNECTOR WAS NOT CONNECTED PROPERLY) |
|
|
4. |
REPLACE TRANSPONDER KEY COIL |
(a) Clear the DTCs (See page ).
(b) Replace the transponder key coil (See page
).
(c) Check that the engine starts with the key (See page
).
OK:
Engine starts normally.
| OK | |
END (TRANSPONDER KEY COIL WAS DEFECTIVE) |
| NG | |
REPLACE TRANSPONDER KEY ECU ASSEMBLY |
