Vehicle Theft Security System (VTSS)

The VTSS-related hard wired inputs to and outputs from the Body Control Module (BCM), the Driver Door Module (DDM), or the Passenger Door Module (PDM) may be diagnosed and tested using conventional diagnostic tools and procedures. Refer to the appropriate wiring information.

However, conventional diagnostic methods may not prove conclusive in the diagnosis of the BCM, the DDM, the PDM, or the Programmable Communications Interface (PCI) data bus network. In order to obtain conclusive testing of the VTSS, the BCM, the DDM, the PDM, and the PCI data bus network must also be checked. The most reliable, efficient, and accurate means to diagnose the VTSS requires the use of a DRB III scan tool and the appropriate diagnostic information.

WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.