Immobilizer System.
PROCEDURE
1. REPLACE ID CODE BOX (IMMOBILISER CODE ECU)
(a) Replace the ID code box (immobiliser code ECU) See: Accessories and Optional Equipment/Antenna/Keyless Start Antenna/Service
and Repair/Removal.
NEXT -- Continue to next step.
2. ECU CODE REGISTRATION
(a) Register the ECU code See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Testing and Inspection/Programming
and Relearning/Engine Immobilizer System.
NEXT -- Continue to next step.
3. ECU COMMUNICATION ID REGISTRATION
(a) 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.
4. 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 B2790 is not output.
NG -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) See: Accessories and Optional
Equipment/Antitheft and Alarm Systems/Alarm Module/Service and Repair/Removal
OK -- END (ID CODE BOX (IMMOBILISER CODE ECU) WAS DEFECTIVE)
Up to 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.
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