Description of On-Board Diagnostics
DESCRIPTIONa. Engine immobilizer system data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle's Data Link Connector 3 (DLC3). In some cases, a malfunction may occur in the immobilizer system even though the security indicator is not illuminated. When the system seems to be malfunctioning, use the hand-held tester to check for malfunctions and perform repairs.