ENGINE IMMOBILISER SYSTEM (w/o Smart Key System), Diagnostic DTC:B2793, B2794, B2795, B2796, B2797, B2798
| DTC Code | DTC Name |
|---|---|
| B2793 | Transponder Chip Malfunction |
| B2794 | Unmatched Encryption Code |
| B2795 | Unmatched Key Code |
| B2796 | No Communication in Immobiliser System |
| B2797 | Communication Malfunction No. 1 |
| B2798 | Communication Malfunction No. 2 |
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 B2795 is stored when a key with a key code that is not registered in the ECU is inserted into the ignition key cylinder.
-
DTC B2796 is stored when a key is inserted into the ignition key cylinder but no communication occurs between the key and transponder key ECU assembly.
-
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 |
|---|---|---|
| B2793 | A transponder chip malfunction. | Key |
| B2794 | A key with an incomplete key code is inserted into the ignition key cylinder. | |
| B2795 | A key with an unregistered key code is inserted into the ignition key cylinder. | |
| B2796 | The key code cannot be transmitted. | |
| B2797 | A key with a BCC malfunction is inserted into the ignition key cylinder. | |
| B2798 | Key code identification cannot be completed within the specified time. |
INSPECTION PROCEDURE
Note
If the transponder key ECU assembly or key is replaced, refer to Registration Click here.
PROCEDURE
-
CLEAR DTC
-
Clear the DTCs Click here.
NEXT 
-
-
CHECK DTC OUTPUT
-
Check for DTCs using all registered keys Click here.
Tech Tips
If a DTC is stored, check for DTCs with the next key after clearing the DTCs.
OK DTC B2793, B2974, B2795, B2796, B2797 and B2798 is not output. Result Result Proceed to OK A NG (all keys) B NG (any key) C
B 
REPLACE TRANSPONDER KEY ECU ASSEMBLY Click here
C
REPLACE KEY THAT STORED DTC
A 
USE SIMULATION METHOD TO CHECK Click here
-