Dtc B2799 Engine Immobiliser System
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK FOR DTC
CHECK WIRE HARNESS (IMMOBILISER CODE ECU - ECM)
CHECK OPERATION OF IMMOBILISER CODE ECU
DTC B2799 Engine Immobiliser System |
DESCRIPTION
This DTC is output when one of the following occurs: 1) the ECM detected errors in its own communications with the immobiliser code ECU; 2) the ECM detects errors in the communication lines; or 3) the ECU communication ID between the immobiliser code ECU and ECM is different and an engine start is attempted. Before troubleshooting for this DTC, make sure no certification ECU DTCs are present. If present, troubleshoot the certification ECU DTCs first.DTC No.
| DTC Detection Condition
| Trouble Area
|
B2799
| One of following conditions is met:
- Error in communication between ECM and immobiliser code ECU
- Error in communication lines
- Communication ID is different during communication with immobiliser code ECU
| - Wire harness
- Immobiliser code ECU
- ECM
|
WIRING DIAGRAM
INSPECTION PROCEDURE
Delete the DTC (Click here).
Recheck for DTC.
Result:Result
| Proceed to
|
B2799 output reoccurs
| A
|
B2799 output does not reoccur
| B
|
| 2.CHECK WIRE HARNESS (IMMOBILISER CODE ECU - ECM) |
Disconnect the L58 ECU connector.
Disconnect the A7 ECM connector.
Measure the resistance of the wire harness side connectors.
- Standard resistance:
Tester Connection
| Specified Condition
|
L58- 5 (EFII) - A7-7 (IMO)
| Below 1 Ω
|
L58-6 (EFIO) - A7-6 (IMI)
| Below 1 Ω
|
L58-5 (EFII) or A7-7 (IMO) - Body ground
| 10 kΩ or higher
|
L58-6 (EFIO) or A7-6 (IMI) - Body ground
| 10 kΩ or higher
|
| | REPAIR OR REPLACE HARNESS AND CONNECTOR |
|
|
| 3.CHECK OPERATION OF IMMOBILISER CODE ECU |
After replacing the immobiliser code ECU with a normal one, check that the engine starts.
- OK:
- Engine starts.
| OK |
|
|
|
| REPLACE IMMOBILISER CODE ECU |
|
