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: 

• To access or replace the central electronic module (CEM), see Central electronic module (CEM), replacing
• To access and replace the engine control module (ECM), see Engine control module (ECM), replacing
• For signal specifications for the central electronic module (CEM):
  • -2004: Signal specification
  • 2005-: Signal specification
• For information about signals on 5-cylinder engines, see Signal specification
• For information about signals on 6-cylinder engines:
  • For 6 cylinder engines -2001, see Signal specification
  • For 6 cylinder engines 2002-, see Signal specification
  • For 6 cylinder engines -2004, see Signal specification
  • For 6 cylinder engines 2005-, see Signal specification .

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