Security Indicator Operation

The Instrument Panel Cluster (IPC) illuminates the SECURITY indicator in the message center as determined by the vehicle theft deterrent system. The IPC receives a class 2 message from the theft deterrent control module (VTD) requesting illumination. The VTD module can command the IPC to illuminate the SECURITY indicator only when the ignition key is in the ON position. The security indicator is a malfunction indicator and is not displayed during the display's test when the ignition is turned to ON. If the PCM loses communication with the VTD module, the instrument cluster will also detect the loss of communication and will illuminate the SECURITY indicator. The SECURITY indicator can indicate both malfunctions (Indicator on steady) and tamper (Indicator flashing indicating unauthorized operation). Under the following conditions the SECURITY indicator may be commanded to illuminate.