OK -- END (ECM WAS DEFECTIVE)
From 08/2009
THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM: B2799: Engine Immobiliser System Malfunction
B2799 - Engine Immobiliser System Malfunction
DESCRIPTION
This DTC is stored when one of the following occurs: 1) the ECM detects an error in its own communication with the ID code box (immobiliser
code ECU); 2) the ECM detects an error in the communication lines; or 3) the ECU communication ID between the ID code box (immobiliser code
ECU) and ECM is different and an engine start is attempted.
HINT
Before troubleshooting this DTC, make sure that no certification ECU (smart key ECU assembly) DTCs are present. If present,
troubleshoot the certification ECU (smart key ECU assembly) DTCs first.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
If the ID code box (immobiliser code ECU) is replaced, register the ECU code and ECU communication ID See: Accessories and
Optional Equipment/Antitheft and Alarm Systems/Testing and Inspection/Programming and Relearning/Engine Immobilizer
System.
PROCEDURE
1. CHECK DTC OUTPUT
(a) Clear the DTCs See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Testing and Inspection/Reading and
Clearing Diagnostic Trouble Codes/Engine Immobiliser System.
(b) Recheck for DTCs See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Testing and Inspection/Reading and
Clearing Diagnostic Trouble Codes/Engine Immobiliser System.
OK:
DTC B2799 is not output.
NG -- RE-REGISTER ECU COMMUNICATION ID
OK -- USE SIMULATION METHOD TO CHECK See: Accessories and Optional Equipment/Antitheft and Alarm
Systems/Diagrams/Diagnostic Aids/How To Troubleshoot ECU Controlled Systems/How To Proceed With Troubleshooting
2. RE-REGISTER ECU COMMUNICATION ID
(a) Re-register the ECU communication ID See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Testing and
Inspection/Programming and Relearning/Engine Immobilizer System.
NEXT -- Continue to next step.
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