Checking The Component

The immobilizer function is integrated in the central electronic module (CEM).

This diagnostic trouble code (DTC) can be caused by missing CAN communication. If there is a diagnostic trouble code (DTC) stored in the central electronic module (CEM) fault trace accordingly.

If no diagnostic trouble codes (DTCs) are stored in the central electronic module (CEM), try a new central electronic module (CEM).

Other information: 

• For -2004, see: CENTRAL ELECTRONIC MODULE (CEM), REPLACING
• For 2005-, see: CENTRAL ELECTRONIC MODULE (CEM), REPLACING .
• To access and replace the engine control module (ECM), see ENGINE CONTROL MODULE (ECM), REPLACING
• -2004: SIGNAL SPECIFICATION
• 2005-: SIGNAL SPECIFICATION
• For 5 cylinder turbocharged engines -2004, see SIGNAL DESCRIPTION
• For 5 cylinder turbocharged engines 2005-, see SIGNAL SPECIFICATION .
• For 6 cylinder engines -2004, see SIGNAL SPECIFICATION
• For 6 cylinder engines 2005-, see SIGNAL SPECIFICATION .

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  Refer to INFORMATION